The recent introduction of flavored wine and malt beverages
|
|
- Harry Henderson
- 5 years ago
- Views:
Transcription
1 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, FOOD COMPOSITION AND ADDITIVES Solid-Phase Microextraction for the Enantiomeric Analysis of Flavors in Beverages SUSAN E. EBELER University of California, Davis, Department of Viticulture and Enology, One Shields Ave, Davis, CA GAY M. SUN Aerojet Fine Chemicals, Rancho Cordova, CA MEERA DATTA, PHIL STREMPLE, and ALLEN K. VICKERS J&W Scientific, Inc., Folsom, CA Solid-phase microextraction combined with gas chromatographic/mass spectrometric analysis and separation on a chiral cyclodextrin stationary phase was a rapid, reliable technique for profiling chiral aroma compounds in flavored alcoholic beverages. Several enantiomeric terpenes, esters, alcohols, norisoprenoids, and lactones were identified in berry-, peach-, strawberry-, and citrus-flavored wine and malt beverages (wine coolers). Using this technique, we were able to confirm the addition of synthetic flavoring to several beverages, consistent with label designations. The recent introduction of flavored wine and malt beverages has created a need for methods that can be used to rapidly profile and authenticate the volatile composition of these beverages. Constant and Collier (1) used gas chromatography with flame ionization detection (GC/FID) combined with solid-phase microextraction (SPME) to profile volatile components in fruit-flavored malt beverages, including lagers and ales. Over 40 volatiles were identified, and all of the products had distinguishable GC/FID profiles. Two raspberry-flavored products contained i-methyl- -ionone and n-methyl- -ionone, compounds that are not found in nature; however, their presence was consistent with label indications of flavor addition. In addition, propylene glycol, a flavor carrier, and benzyl benzoate, a flavor stabilizer and enhancer, were identified in several of the products, again indicating probable flavor addition to these products. Although measurements of characteristic flavor constituents and their quantity and distribution in aroma extracts can be precise and reproducible, they can give only limited information on the source and origins of the flavoring (2). However, as reviewed by Marchelli et al. (3), the enantiomeric composition of flavorings is often specific to the natural source or origin. For example, enantiomeric distribution of (E)- -ionone may be used as a marker for the authenticity of raspberry flavor because natural sources contain the Received March 13, Accepted by JL May 31, enantiopure (R)-form (4). Therefore, the enantiomeric ratio of key flavor compounds has been used as an important criterion for differentiating natural flavor compounds from their synthetic counterparts (2, 3, 5). Methods for analysis of chiral flavor compounds typically involve quantitative and qualitative measurements by gas chromatography (GC) with cyclodextrin-based stationary phases. However, routine analysis of volatile composition by GC is often limited by sample preparation techniques that are time consuming, require expensive equipment and solvents, and/or lack sensitivity and precision. Care must also be taken to avoid racemization during sample preparation steps. SPME offers a rapid, solvent-free alternative to traditional sample preparation techniques (e.g., liquid/liquid extractions and static and dynamic headspace sampling) for extracting flavors from food and beverages (6 12). A number of SPME fiber coatings are available to provide optimal sensitivity and selectivity for a wide range of analytes. In addition, SPME requires no modification of the GC procedure and is readily automated. The objective of this study was to demonstrate the application of SPME combined with enantioselective analysis by gas chromatography/mass spectrometry (GC/MS) to profile important chiral aroma compounds in flavored alcoholic beverages. Experimental Chemicals and Samples All chemicals were purchased commercially (Aldrich Chemical Co., Milwaukee, WI, or Fluka Chemical Corp., Milwaukee, WI) and were of the highest grade available. All beverage samples were purchased locally (Folsom, CA). Gas Chromatographic Conditions All analyses were performed by using a Hewlett-Packard, Willmington, DE 6890 gas chromatograph interfaced to a 5973 mass-selective detector and ChemStation, Hwelett-Packard, Willmington, DE software. The column was CycloSil-B (heptakis[2,3-di-o-methyl-6-o-t-butyldimethyl silyl]- -cyclodextrin), 30 m 0.25 mm 0.25 µm (J&W Scientific, Inc., Folsom, CA). Helium was used as the carrier gas at 37 cm/s (linear velocity measured at 40 C). The inlet of the
2 480 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, 2001 Figure 1. Chromatogram obtained by gas chromatography with mass-selective detection (GC/MSD) for a berry-flavored wine cooler with natural and artificial flavors. Figure 2. Chromatogram obtained by GC/MSD for a raspberry Merlot wine flavored with natural and artificial flavors.
3 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, Figure 3. flavors. Chromatogram obtained by GC/MSD for a raspberry-flavored grape wine with raspberry and other natural Figure 4. Chromatogram obtained by GC/MSD for a blackberry-flavored wine beverage with natural flavors.
4 482 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, 2001 Table 1. Peak areas and ratios for the 2 isomers of -ionone in berry-flavored beverages Sample Fragment ion Peak area of first-eluting isomer Fragment ion Peak area of second-eluting isomer Ratio a Berry-flavored wine cooler (natural and artificial flavoring) Raspberry wine (Merlot; natural and artificial flavors) Raspberry-flavored grape wine (raspberry & other natural flavors) m/z m/z m/z m/z m/z m/z Blackberry-flavored wine beverage (natural flavors) m/z m/z m/z m/z m/z m/z a Ratio: peak area of first-eluting isomer: peak area of second-eluting isomer. gas chromatograph and the transfer line of the mass-selective detector were maintained at 250 and 280 C, respectively. The oven temperature was programmed to increase at 2 C/min from an initial temperature of 40 C to a final temperature of 190 C. All injections were performed in the split mode with the split ratio set at 1:5. Headspace SPME Headspace SPME sampling was done manually by using a polyacrylate fiber (84 µm; Supelco, Inc., Bellefonte, PA). Samples (10 ml) were placed in 15 ml glass headspace vials fitted with Teflon crimp-seal closures. Sodium chloride (1 g/10 ml sample) was added before the vial was sealed and before sampling. After conditioning according to the manufacturer s directions, the SPME fiber was inserted into the headspace of the vial, allowed to equilibrate at room temperature (27 C) for 1 h without stirring, and then injected into the inlet of the gas chromatograph. Peak identifications were determined by comparison of retention times with those of authentic standards purchased Figure 5. Chromatogram obtained by GC/MSD for a peach-flavored wine cooler with natural flavors.
5 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, Figure 6. Chromatogram obtained by GC/MSD for a strawberry-flavored white Zinfandel with natural flavors. commercially. In addition, GC/MS spectra were obtained for both samples and standards and the spectra were compared for final confirmation of peak identity. Results and Discussion Headspace SPME Analysis Several studies have evaluated the variables that can influence the extraction sensitivity and selectivity of the SPME technique (6 9, 13 16). These variables can include the choice of SPME fiber, salt additions, sampling temperature, and sampling time. Our purpose for this study was to develop a general procedure that could be used to profile volatile compounds with a range of boiling points and polarities. A polyacrylate fiber and the addition of salt to the beverage before sampling were shown to give optimum results for this purpose. Sampling times of 60 min were used for all samples. Shorter analysis times (20 30 min) were also evaluated; however, the longer extraction times provided better overall sensitivity for the relatively low concentrations of flavor found for these products. The sampling time also coincided with the GC analysis time, so that the fiber was always in either the injector or the headspace of a vial to minimize analyte loss and contamination of the fiber by ambient air. Although manual sampling was used for this study, the method could be readily automated. Sample Profiles Raspberry-flavored malt beverage and wines. Four different berry-flavored wines and malt beverages were analyzed (Figures 1 4). Labels indicated that both natural and artificial flavors were used, depending on the product. GC aroma profiles varied among the samples; however, α-ionone, a key aroma component of raspberry flavor, was identified in all samples. Other positively identified chiral compounds included ethyl 2-methyl butanoate, limonene, linalool, α-terpineol, and 2-ethyl-1-hexanol. α-ionone is present as the enantiopure (R)-form in raspberries and other natural sources and can be used as a marker of the authenticity of natural products (4). However, a comparison of peak areas for the 2 isomers of α-ionone indicated that both isomers were present in approximately equal quantities in all samples (Table 1; the absolute configuration of each peak was not determined). An unidentified coeluting component interfered with analysis of the first-eluting isomer in 2 of the beverage samples. However, a comparison of ion ratios for the predominant fragment ions of α-ionone (m/z 93, 121, and 136) also indicated that similar amounts of both isomers were present in these products (Table 1). These results are consistent with the labeling for the use of artificial flavoring in 2 of the products. In the products labeled as containing only natural flavors, it is unclear whether the observed α-ionone composition is due to the addition of synthetic flavoring or to the addition of other natural flavorings with different isomer com-
6 484 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, 2001 Figure 7. Chromatogram obtained by GC/MSD for a citrus-flavored wine cooler with natural flavors (21; reprinted with permission from the American Chemical Society). positions, or whether α-ionone has undergone racemization by exposure to UV light during storage (17). The chiral ester, ethyl 2-methylbutanoate, was identified in 3 of the samples, with the 2 isomers present in approximately equal concentrations. The S(+)-form predominates in apples and pineapple (18). The enantiomeric composition in raspberries is not known. Peach-flavored malt beverage. Natural peach flavors are dominated by lactones, particularly -decalactone (4-decanolide; 19). Only one isomer of -decalactone was identified in the peach-flavored malt beverage (Figure 5), and it was tentatively identified as the (R)-configuration, which is known to predominate in natural peach flavors (3). Other chiral compounds positively identified in this sample were the 2 isomers of 2-ethyl-1-hexanol, present in approximately equal amounts. Strawberry-flavored malt beverage (wine cooler). (R)- -Decalactone (4-decanolide), an important odor-active compound in strawberries (20), was tentatively identified in the strawberry-flavored wine (Figure 6). Ethyl 2-methylbutanoate, was also identified. Consistent with reports by Takeoka et al. (18), the second-eluting isomer of this ester, tentatively identified as the S(+)-configuration, predominated. These results are consistent with the use of a natural strawberry flavor in this beverage. Other positively identified chiral compounds were (R)-limonene and 2-ethyl-1-hexanol. Citrus-flavored wine cooler. Terpenes predominate in the headspace of a naturally flavored citrus-flavored malt beverage (Figure 7). We previously showed that ratios of 4 enantiomeric terpenes, limonene, linalool, terpinen-4-ol, and α-terpineol, were comparable to those of a naturally flavored carbonated soda beverage (21). In particular, the R(+)-isomer of limonene predominanted in both the wine cooler and in the soda, in agreement with published data for natural citrus flavors (17). Care must be taken when information on enantiomeric ratios of acidic beverages is interpreted, however, because racemization of some compounds readily occurs (e.g., linalool and α-terpineol; 3, 22). Summary Information about enantiomeric composition is frequently used as a reliable parameter for determining the naturalness of flavorings (2, 3, 5). Our results show that headspace SPME combined with GC/MS analysis and separation on chiral stationary phases provides a simple and rapid method for profiling chiral lactones, norisoprenoids (α-ionone), esters, alcohols, and terpenes in flavored alcoholic beverages. The method is readily automated and the addition of an internal standard to the samples before analysis could be used to provide additional quantitative information about the flavor composition. Using this technique, we were able to confirm the addition of synthetic flavorings to several products, consistent with
7 EBELER ET AL.: JOURNAL OF AOAC INTERNATIONAL VOL. 84, NO. 2, designations on the labels. Enantiomer profiles of 2 products were inconsistent with label designations, which indicated the use of flavorings from natural sources only. However, additional analyses are required to unambiguously verify the source of flavorings for these samples. Acknowledgments Partial financial support for Susan E. Ebeler was provided by a Faculty Development Award from the University of California, Davis. Special thanks are given to Jeanee Tollefson for technical assistance. References (1) Constant, M., & Collier, J. (1997) J. Am. Soc. Brew. Chem. 55, (2) Mosandl, A. (1995) Food Rev. Int. 11, (3) Marchelli, R., Dossena, A., & Palla, G. (1996) Trends Food Sci. Technol. 7, (4) Lehman, D., Dietrich, A., Schmidt, S., Dietrich, H., & Mosandl, A. (1993) Z. Lebensm. Unters. Forsch. 196, (5) Mussinan, C.J., & Hoffman, P.G. (1999) Food Technol. 53, (6) Yang, X., & Peppard, J. (1994) J. Agric. Food Chem. 42, (7) Yang, X., & Peppard, J. (1995) LC GC 13, (8) De la Calle Garcia, D., Magnaghi, S., Reichenbacher, M., & Danzer, K. (1996) J. High Resolut. Chromatogr. 19, (9) De la Calle Garcia, D., Reichenbacher, M., & Danzer, K. (1998) J. High Reso. Chromatogr. Chromatogr. Commun. 21, (10) Evans, T.J., Butzke, C.E., & Ebeler, S.E. (1997) J. Chromatogr. A. 786, (11) Scarlata, C.S., & Ebeler, S.E. (1999) J. Agric. Food Chem. 47, (12) Hayasaka, E., & Bartowsky, E.J. (1999) J. Agric. Food Chem. 47, (13) Louch, D., Motlagh, S., & Pawliszyn, J. (1992) Anal. Chem. 64, (14) Bucholz, K.D., & Pawliszyn, J. (1994) Anal. Chem. 66, (15) Field, J.A., Nickerson, G., James, D.D., & Heider, C. (1996) J. Agric. Food Chem. 44, (16) Song, J., Gardner, B., Holland, J., & Beaudry, R. (1997) J. Agric. Food Chem. 45, (17) Bauer, K., Garbe, D., & Surburg, H. (1990) in Common Fragrance and Flavor Materials, VCH, Weinheim, Germany, 218 pp (18) Takeoka, G., Flath, R.A., Mon, T.R., Buttery, R.G., Teranishi, R., Güntert, M., Lautamo, R., & Szejtli, J. (1990) J. High Resol. Chromatogr. 13, (19) Berger, R.G. (1991) in Volatile Compounds in Foods and Beverages, H. Maarse (Ed.), Marcel Dekker, Inc., New York, NY, pp (20) Latrasse, A. (1991) in Volatile Compounds in Foods and Beverages, H. Maarse (Ed.), Marcel Dekker, Inc., New York, NY, pp (21) Ebeler, S.E., Sun, G.M., Vickers, A.K., & Stremple, P. (2000) in Aroma Active Compounds in Foods and Beverages G.R. Takeoka, M. Güntert, & K.-H. Engel (Eds), American Chemical Society, Washington, DC, in press (22) Rapp, A. (1988) in Wine Analysis, Modern Methods of Plant Analysis, H.F. Linskens & J.F. Jackson (Eds), Springer-Verlag, Berlin, Germany, pp 29 66
Table 1: Experimental conditions for the instrument acquisition method
PO-CON1702E The Comparison of HS-SPME and SPME Arrow Sampling Techniques Utilized to Characterize Volatiles in the Headspace of Wine over an Extended Period of Time Pittcon 2017 1430-11P Alan Owens, Michelle
More informationSomchai Rice 1, Jacek A. Koziel 1, Anne Fennell 2 1
Determination of aroma compounds in red wines made from early and late harvest Frontenac and Marquette grapes using aroma dilution analysis and simultaneous multidimensional gas chromatography mass spectrometry
More informationTyler Trent, SVOC Application Specialist; Teledyne Tekmar P a g e 1
Application Note Flavor and Aroma Profile of Hops Using FET-Headspace on the Teledyne Tekmar Versa with GC/MS Tyler Trent, SVOC Application Specialist; Teledyne Tekmar P a g e 1 Abstract To brewers and
More informationSomchai Rice 1, Jacek A. Koziel 1, Jennie Savits 2,3, Murlidhar Dharmadhikari 2,3 1 Agricultural and Biosystems Engineering, Iowa State University
Pre-fermentation skin contact temperatures and their impact on aroma compounds in white wines made from La Crescent grapes using aroma dilution analysis and simultaneous multidimensional gas chromatography
More informationSolid Phase Micro Extraction of Flavor Compounds in Beer
Solid Phase Micro Extraction of Flavor Compounds in Beer ANNE JUREK Low Level Detection of Trichloroanisole in Red Wine Application Note Food/Flavor Author Anne Jurek Applications Chemist EST Analytical
More informationAnalytical Report. Volatile Organic Compounds Profile by GC-MS in Clove E-liquid Flavor Concentrate. PO Box 2624 Woodinville, WA 98072
Millis Scientific, Inc 6400 Baltimore National Pike #201 Baltimore MD 21228 Telephone: 877-844-2635 Email: info@millisscientific.com Title Report No. Analytical Report Volatile Organic Compounds Profile
More informationAnalytical Report. Volatile Organic Compounds Profile by GC-MS in Cupcake Batter Flavor Concentrate
Millis Scientific, Inc 6400 Baltimore National Pike #201 Baltimore MD 21228 Telephone: 877-844-2635 Email: info@millisscientific.com Title Analytical Report Report No. 042216-001-6 Issue Date April 22,
More informationCHAPTER 8. Sample Laboratory Experiments
CHAPTER 8 Sample Laboratory Experiments 8.c SPME-GC-MS Analysis of Wine Headspace Bailey Arend For many consumers, the aroma of a wine is nearly as important as the flavor. The wine industry is obviously
More informationJournal of Chemical and Pharmaceutical Research, 2017, 9(9): Research Article
Available online www.jocpr.com Journal of Chemical and Pharmaceutical Research, 2017, 9(9):135-139 Research Article ISSN : 0975-7384 CODEN(USA) : JCPRC5 The Identification and Quantitation of Thymol and
More informationFast Analysis of Smoke Taint Compounds in Wine with an Agilent J&W DB-HeavyWax GC Column
Application Note Flavors and Fragrances Fast Analysis of Smoke Taint Compounds in Wine with an Agilent J&W DB-HeavyWax GC Column Author Vanessa Abercrombie Agilent Technologies, Inc. Abstract The analysis
More informationApplication Note: Analysis of Melamine in Milk (updated: 04/17/09) Product: DPX-CX (1 ml or 5 ml) Page 1 of 5 INTRODUCTION
Page 1 of 5 Application Note: Analysis of Melamine in Milk (updated: 04/17/09) Product: DPX-CX (1 ml or 5 ml) INTRODUCTION There has been great interest recently for detecting melamine in food samples
More informationAnalytical Report. Table 1: Target compound levels. Concentration units are ppm or N/D, not detected.
03/20/17 Report 032017-13 Page 1 of 4 Millis Scientific, Inc 6400 Baltimore National Pike #201 Baltimore MD 21228 Telephone: 877-844-2635 Email: info@millisscientific.com Analytical Report Title Vicinal
More informationOne class classification based authentication of peanut oils by fatty
Electronic Supplementary Material (ESI) for RSC Advances. This journal is The Royal Society of Chemistry 2015 One class classification based authentication of peanut oils by fatty acid profiles Liangxiao
More informationProfiling of Aroma Components in Wine Using a Novel Hybrid GC/MS/MS System
APPLICATION NOTE Gas Chromatography/ Mass Spectrometry Authors: Sharanya Reddy Thomas Dillon PerkinElmer, Inc. Shelton, CT Profiling of Aroma Components in Wine Using a Novel Hybrid GC/MS/MS System Introduction
More informationGAS-CHROMATOGRAPHIC ANALYSIS OF SOME VOLATILE CONGENERS IN DIFFERENT TYPES OF STRONG ALCOHOLIC FRUIT SPIRITS
GAS-CHROMATOGRAPHIC ANALYSIS OF SOME VOLATILE CONGENERS IN DIFFERENT TYPES OF STRONG ALCOHOLIC FRUIT SPIRITS Vesna Kostik 1*, Shaban Memeti 1, Biljana Bauer 2 1* Institute of Public Health of Republic
More informationIdentification of Adulteration or origins of whisky and alcohol with the Electronic Nose
Identification of Adulteration or origins of whisky and alcohol with the Electronic Nose Dr Vincent Schmitt, Alpha M.O.S AMERICA schmitt@alpha-mos.com www.alpha-mos.com Alpha M.O.S. Eastern Analytical
More informationCHAPTER 8. Sample Laboratory Experiments
CHAPTER 8 Sample Laboratory Experiments 8.a Analytical Experiments without an External Reference Standard; Conformational Identification without Quantification. Jake Ginsbach CAUTION: Do not repeat this
More informationEmerging Applications
Emerging Applications Headspace Analysis and Stripping of Volatile Compounds from Apple and Orange Juices Using SIFT-MS Introduction Differences in fruit varieties, fruit ripeness and processing techniques
More informationRESOLUTION OIV-OENO ANALYSIS OF VOLATILE COMPOUNDS IN WINES BY GAS CHROMATOGRAPHY
RESOLUTION OIV-OENO 553-2016 ANALYSIS OF VOLATILE COMPOUNDS IN WINES BY GAS CHROMATOGRAPHY THE GENERAL ASSEMBLY, In view of Article 2, paragraph 2 iv of the Agreement of 3 April 2001 establishing the International
More informationDetermination of Volatile Aroma Compounds of Blaufrankisch Wines Extracted by Solid-Phase Microextraction
Determination of Volatile Aroma Compounds of Blaufrankisch Wines Extracted by Solid-Phase Microextraction G. Vas 1, L Gál 1, J. Harangi 2, A. Dobo 3, and K. Vékey 3 1 Research Institute for Viticulture
More informationAgilent J&W DB-624 Ultra Inert Capillary Column Screens Distilled Spirits by GC/MS Static Headspace
Agilent J&W DB-6 Ultra Inert Capillary Column Screens Distilled Spirits by GC/MS Static Headspace Application Note Food Testing & Agriculture Author Ken Lynam Agilent Technologies, Inc. Abstract This work
More informationExperiment 6 Thin-Layer Chromatography (TLC)
Experiment 6 Thin-Layer Chromatography (TLC) OUTCOMES After completing this experiment, the student should be able to: explain basic principles of chromatography in general. describe important aspects
More informationComprehensive analysis of coffee bean extracts by GC GC TOF MS
Application Released: January 6 Application ote Comprehensive analysis of coffee bean extracts by GC GC TF MS Summary This Application ote shows that BenchTF time-of-flight mass spectrometers, in conjunction
More informationRapid Analysis of Soft Drinks Using the ACQUITY UPLC H-Class System with the Waters Beverage Analysis Kit
Rapid Analysis of Soft Drinks Using the ACQUITY UPLC H-Class System with the Waters Beverage Analysis Kit Mark E. Benvenuti, Raymond Giska, and Jennifer A. Burgess Waters Corporation, Milford, MA U.S.
More informationFLAVOR CHARACTERIZATION OF THREE MANDARIN CULTIVARS (SATSUMA, BODRUM, CLEMANTINE) BY USING GC/MS AND FLAVOR PROFILE ANALYSIS TECHNIQUES ABSTRACT
Blackwell Science, LtdOxford, UKJFQJournal of Food Quality046-9428Copyright 2005 by Food & Nutrition Press, Inc., Trumbull, Connecticut.2005286370Original ArticleFLAVOR CHARACTERIZATION OF MANDARIN CULTIVARS
More informationAnalysis of Volatile Compounds of Jasminum nitidum [Acc.JN.1] Flowers
International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 6 Number 11 (2017) pp. 5411-5418 Journal homepage: http://www.ijcmas.com Original Research Article https://doi.org/10.20546/ijcmas.2017.611.517
More informationAnalytical Method for Coumaphos (Targeted to agricultural, animal and fishery products)
Analytical Method for Coumaphos (Targeted to agricultural, animal and fishery products) The target compound to be determined is coumaphos. 1. Instruments Gas chromatograph-flame thermionic detector (GC-FTD)
More informationSolid Phase Micro Extraction of Flavor Compounds in Beer
Solid Phase Micro Extraction of Flavor Compounds in Beer ANNE JUREK Reducing Carryover in Environmental Water Samples Application Note Environmental Author Anne Jurek Applications Chemist EST Analytical
More informationGC/MS BATCH NUMBER: W10104
GC/MS BATCH NUMBER: W10104 ESSENTIAL OIL: WINTERGREEN BOTANICAL NAME: GAULTHERIA PROCUMBENS ORIGIN: CHINA KEY CONSTITUENTS PRESENT IN THIS BATCH OF WINTERGREEN OIL % METHYL SALICYLATE 99.4 Comments from
More informationADVANCED BEER AROMA ANALYSIS. Erich Leitner TU Graz, Institute of Analytical Chemistry and Food Chemistry, Graz, Austria
ADVANCED BEER AROMA ANALYSIS Erich Leitner TU Graz, Institute of Analytical Chemistry and Food Chemistry, Graz, Austria Beer Analysis - Overview Production of Beer Sample Preparation and Analysis Relevance
More informationExtraction of Acrylamide from Coffee Using ISOLUTE. SLE+ Prior to LC-MS/MS Analysis
Application Note AN796 Extraction of Acrylamide from Coffee using ISOLUTE SLE+ Page 1 Extraction of Acrylamide from Coffee Using ISOLUTE SLE+ Prior to LC-MS/MS Analysis This application note describes
More informationThe Benefits of GC/MS Coupled with a Headspace Trap to Monitor Volatile Organic Compounds in the Production of Beer
24 The Benefits of GC/MS Coupled with a Headspace Trap to Monitor Volatile Organic Compounds in the Production of Beer by Lee Marotta 1 and Robert Thomas 2 1 GC and GC MS Senior Application Scientist,
More informationDetermination of Pesticides in Coffee with QuEChERS Extraction and Silica Gel SPE Cleanup
Determination of Pesticides in Coffee with QuEChERS Extraction and Silica Gel SPE Cleanup UCT Part Numbers ECMSSC50CT-MP 50-mL centrifuge tube and Mylar pouch containing 4000 mg MgSO4 and 1000 mg NaCl
More informationComparison of Supercritical Fluid Extraction with Steam Distillation for the Extraction of Bay Oil from Bay (Pimenta Racemosa) Leaves
International Journal of Engineering Science Invention ISSN (Online): 2319 6734, ISSN (Print): 2319 6726 Volume 5 Issue 1 January 2016 PP.51-55 Comparison of Supercritical Fluid Extraction with Steam Distillation
More informationAppNote 4/2003. Fast Analysis of Beverages using a Mass Spectral Based Chemical Sensor KEYWORDS ABSTRACT
AppNote 4/2003 Fast Analysis of Beverages using a Mass Spectral Based Chemical Sensor Vanessa R. Kinton, Robert J. Collins Gerstel, Inc., Caton Research Center, 1510 Caton Center Drive, Suite H, Baltimore,
More informationVinmetrica s SC-50 MLF Analyzer: a Comparison of Methods for Measuring Malic Acid in Wines.
Vinmetrica s SC-50 MLF Analyzer: a Comparison of Methods for Measuring Malic Acid in Wines. J. Richard Sportsman and Rachel Swanson At Vinmetrica, our goal is to provide products for the accurate yet inexpensive
More informationThe Determination of Pesticides in Wine
Application Note Abstract According to the state institute for chemical and veterinary analysis of food, Conventionally grown wine grapes are one of the crops most extensively treated with pesticides (CVUA
More information, FAX
Detecting 2,4,6 TCA in Corks and Wine Using the znose Edward J. Staples, Ph.D. Electronic Sensor Technology, 1077 Business Center Circle, Newbury Park, California, Ph. 805-480-1994, FAX 805-480-1984, Email:
More information! " # # $% 004/2009. SpeedExtractor E-916
! "# # $% 004/2009 SpeedExtractor E-916! " # # $% The Genépi plant (Artemisia umbelliformis) grows in alpine areas. It is also cultivated and used to produce a herb liquor. Costunolide is a sesquiterpene
More informationDetermination of the concentration of caffeine, theobromine, and gallic acid in commercial tea samples
Determination of the concentration of caffeine, theobromine, and gallic acid in commercial tea samples Janna Erickson Department of Chemistry, Concordia College, 901 8 th St S, Moorhead, MN 56562 Abstract
More informationBromine Containing Fumigants Determined as Total Inorganic Bromide
Bromine Containing Fumigants Determined as Total Inorganic Bromide Introduction: Fumigants containing bromine, mainly methyl bromide, are used for soil disinfection as well as postharvest treatment of
More informationAnalysis of Volatile Compounds from the Concrete of Jasminum multiflorum Flowers
International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 6 Number 11 (2017) pp. 2229-2233 Journal homepage: http://www.ijcmas.com Original Research Article https://doi.org/10.20546/ijcmas.2017.611.264
More informationTHE BREWING VALUE OF HOPS HOP & BREW SCHOOL A UG 29 S EPT 1, 2017, Y AKIMA
THE BREWING VALUE OF HOPS HOP & BREW SCHOOL A UG 29 S EPT 1, 2017, Y AKIMA Introduction Hop research at De Proefbrouwerij The brewing value of hops Analysis Case studies Summary Take home messages 2 INTRODUCTION
More informationThe Importance of Dose Rate and Contact Time in the Use of Oak Alternatives
W H I T E PA P E R The Importance of Dose Rate and Contact Time in the Use of Oak Alternatives David Llodrá, Research & Development Director, Oak Solutions Group www.oaksolutionsgroup.com Copyright 216
More informationby trained human panelist. Details for each signal are given in Table 2.
Sensory profile analysis: Preliminary characterization of wine aroma profiles using solid phase microextraction and simultaneous chemical and sensory analyses Iowa State University and South Dakota State
More informationAnalysis of Dairy Products, Using SIFT-MS
WHITE PAPER Analysis of Dairy Products, Using SIFT-MS Analysis of Dairy Products, Using SIFT-MS The sensory appeal of dairy products is in part due to the very desirable aromas that they exhibit. These
More informationHigh-Resolution Sampling 2D-LC with the Agilent 1290 Infinity II 2D-LC Solution
High-Resolution Sampling D-LC with the Agilent 9 Infinity II D-LC Solution Reliable Quantification of Coeluting Substances Technical Overview Author Susanne Stephan Agilent Technologies, Inc. Waldbronn,
More informationProject Summary. Principal Investigator: C. R. Kerth Texas A&M University
Project Summary Determination of aromatic production from surface browning to improve flavor in steaks using differences in steak thickness and cook surface temperature Principal Investigator: C. R. Kerth
More informationThe Good and the Bad Influence of. Polyfunctional Thiols in Beer Hops. Grapefruit or a Cat Box? Application Scientist: Matthew Curtis
The Good and the Bad Influence of Polyfunctional Thiols in Beer Hops; Is it Grapefruit or a Cat Box? Application Scientist: Matthew Curtis 1 Polyfunctional Thiols in Beer Hops Quick History of Beer Hop
More informationMonitoring Ester Formation in Grape Juice Fermentations Using Solid Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry
J. Agric. Food Chem. 2001, 49, 589 595 589 Monitoring Ester Formation in Grape Juice Fermentations Using Solid Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry Elizabeth Vianna and
More informationApplication Note CL0311. Introduction
Automation of AOAC 970.16 Bitterness of Malt Beverages and AOAC 976.08 Color of Beer through Unique Software Control of Common Laboratory Instruments with Real-Time Decision Making and Analysis Application
More informationDetermination of Caffeine in Coffee Products According to DIN 20481
Deteration of Caffeine in Coffee Products According to DI 81 Application ote Food Testing & Agriculture Food Authenticity Author Edgar aegele Agilent Technologies, Inc. Waldbronn, Germany Abstract This
More informationNovel Closed System Extraction of Essential Oil: Impact on Yield and Physical Characterization
2014 4th International Conference on Biotechnology and Environment Management IPCBEE vol.75 (2014) (2014) IACSIT Press, Singapore DOI: 10.7763/IPCBEE. 2014. V75. 7 Novel Closed System Extraction of Essential
More informationInvestigating the factors influencing hop aroma in beer
Investigating the factors influencing hop aroma in beer Graham Eyres, Tobias Richter, Jamie Scrimgeour, Pat Silcock and Phil Bremer Department of Food Science University of Otago, Dunedin, New Zealand
More informationChemosystematic Study of Diterpenoids in Green Coffee Beans
Index Table of contents Chemosystematic Study of Diterpenoids in Green Coffee Beans G. GUERRERO 1, M. SUÁREZ 2, G. MORENO 3 1 Universidad Tecnológica de Pereira, A.A 97. Pereira, Risaralda, Colombia 2
More informationGC/MS BATCH NUMBER: TL0103
GC/MS BATCH NUMBER: TL0103 ESSENTIAL OIL: THYME LINALOOL BOTANICAL NAME: THYMUS VULGARIS ORIGIN: SPAIN KEY CONSTITUENTS PRESENT IN THIS BATCH OF THYME LINALOOL OIL % LINALOOL 72.9 TERPINEN-4-ol 5.5 γ-terpinene
More informationProtective Effect of Thiols on Wine Aroma Volatiles
98 The Open Food Science Journal, 2009, 3, 98-102 Protective Effect of Thiols on Wine Aroma Volatiles Ioannis G. Roussis*,1, Despina Papadopoulou 1 and Maria Sakarellos-Daitsiotis 2 Open Access 1 Laboratory
More informationSTUDIES ON THE ANALYTICAL CHARACTERISTICS OF WINES OBTAINED FROM VINE VARIETY WITH BIOLOGICAL RESISTANT
Abstract Scientific Bulletin. Series F. Biotechnologies, Vol. XIX, 2015 ISSN 2285-1364, CD-ROM ISSN 2285-5521, ISSN Online 2285-1372, ISSN-L 2285-1364 STUDIES ON THE ANALYTICAL CHARACTERISTICS OF WINES
More informationDetermination of Methylcafestol in Roasted Coffee Products According to DIN 10779
Deteration of Methylcafestol in Roasted Coffee Products According to DIN 1779 Application Note Food Testing & Agriculture Food Authenticity Author Edgar Naegele Agilent Technologies, Inc. Waldbronn, Germany
More informationExtraction of Essential Oil from Citrus junos Peel using Supercritical Carbon Dioxide
Extraction of Essential Oil from Citrus junos Peel using Supercritical Carbon Dioxide Munehiro Hoshino 1,2, Masahiro Tanaka 2, Mitsuru Sasaki 1, Motonobu Goto 1 1 Graduate School of Science and Technology,
More informationAutomation of AOAC for the Identification of FD&C Color Additives in Foods using Solid Phase Extraction
Automation of AOAC 988.13 for the Identification of FD&C Color Additives in Foods using Solid Phase Extraction Keywords Introduction Application Note FB0112 GX-274 ASPEC, AOAC, Spectrophotometer, Food
More informationTOOLS OF SENSORY ANALYSIS APPLIED TO APPLES
TOOLS OF SENSORY ANALYSIS APPLIED TO APPLES Anne Plotto and Mina McDaniel Department of Food Science and Technology Oregon State University Corvallis, OR 97331 plottoa@bcc.orst.edu The use of senses in
More informationTSKgel TECHNICAL INFORMATION SHEET No. 131
TSKgel TECNICAL INFORMATION SEET No. Analysis of Synthetic Sweeteners in Coffee by PLC Synthetic sweeteners are used in many foods because they have fewer calories than sugar. Acesulfame potassium (Acesulfame-K),
More informationAki Murakami, Etzer Chicoye, and Henry Goldstein, Miller Brewing Company, Technical Center, 3939 West Highland Boulevard, Milwaukee, WI53201
Hop Flavor Constituents in Beer by Headspace Analysis 1 Aki Murakami, Etzer Chicoye, and Henry Goldstein, Miller Brewing Company, Technical Center, 3939 West Highland Boulevard, Milwaukee, WI53201 ABSTRACT
More informationPECTINASE Product Code: P129
PECTINASE Product Code: P129 Enzyme for sample clarification prior to patulin analysis. For in vitro use only. P129/V1/02.06.16 www.r-biopharm.com Contents Page Test Principle... 3 Kit Components... 3
More informationDetermination of Melamine Residue in Milk Powder and Egg Using Agilent SampliQ Polymer SCX Solid Phase Extraction and the Agilent 1200 Series HPLC/UV
Determination of Melamine Residue in Milk Powder and Egg Using Agilent SampliQ Polymer SCX Solid Phase Extraction and the Agilent 1200 Series HPLC/UV Application Note Food Safety Authors Chen-Hao Zhai
More informationLife Science and Chemical Analysis Solutions. Key Words: GCxGC-TOFMS, SPME, Food and Flavors. LECO Corporation; Saint Joseph, Michigan USA
Analysis of Grape Volatiles by Solid Phase Microextraction and Comprehensive Two-Dimensional Gas Chromatography with Time-of-Flight Mass Spectrometry (GCxGC-TOFMS) LECO Corporation; Saint Joseph, Michigan
More informationCERTIFICATE OF ANALYSIS - GC PROFILING
Date : March 07, 2018 CERTIFICATE OF ANALYSIS - GC PROFILING SAMPLE IDENTIFICATION Internal code : 18B20-PLG30-1-CC Customer identification : Anise Star Type : Essential oil Source : Illicium verum Customer
More informationEffects of Capture and Return on Chardonnay (Vitis vinifera L.) Fermentation Volatiles. Emily Hodson
Effects of Capture and Return on Chardonnay (Vitis vinifera L.) Fermentation Volatiles. Emily Hodson Thesis submitted to the faculty of the Virginia Polytechnic Institute and State University in partial
More informationProfiling and Identification of Hop-Derived Bitter Compounds in Beer Using LC-MS/MS
Profiling and Identification of op-derived Bitter Compounds in Beer Using LC-MS/MS André Schreiber SCIEX, Canada Beer is one of the world's most widely consumed beverage (after tea and water) and probably
More informationHigh resolution mass approaches for wine and oenological products analysis
High resolution mass approaches for wine and oenological products analysis Barnaba C., Nardin T., Larcher R. IASMA Fondazione Edmund Mach, via E. Mach, 1, 38010 San Michele all Adige, Italy chiara.barnaba@fmach.it
More informationGC/MS BATCH NUMBER: SB5100
GC/MS BATCH NUMBER: SB5100 ESSENTIAL OIL: SEA FENNEL BOTANICAL NAME: CRITHMUM MARITIMUM ORIGIN: GREECE KEY CONSTITUENTS PRESENT IN THIS BATCH OF SEA FENNEL OIL % γ-terpinene 26.3 LIMONENE 20.3 SABINENE
More informationVINOLOK (VINOSEAL) closure evaluation Stage 1: Fundamental performance assessment
AWRI Report VINOLOK (VINOSEAL) closure evaluation Stage 1: Fundamental performance assessment Author: Neil Scrimgeour 14 March, 2014 Project Number: PCS13060 Commercial in confidence Page 1 of 6 1. Introduction
More informationEXTRACTION PROCEDURE
SPE Application Note for Multiresidue Exraction and Clean Up from Fruit and Vegetables This note outlines solid phase extraction (SPE) methodology for the multiresidue extraction and clean up of fruits
More informationDEVELOPMENT OF A RAPID METHOD FOR THE ASSESSMENT OF PHENOLIC MATURITY IN BURGUNDY PINOT NOIR
PINOT NOIR, PAGE 1 DEVELOPMENT OF A RAPID METHOD FOR THE ASSESSMENT OF PHENOLIC MATURITY IN BURGUNDY PINOT NOIR Eric GRANDJEAN, Centre Œnologique de Bourgogne (COEB)* Christine MONAMY, Bureau Interprofessionnel
More informationA novel approach to assess the quality and authenticity of Scotch Whisky based on gas chromatography coupled to high resolution mass spectrometry
Ensuring the Integrity of the European food chain A novel approach to assess the quality and authenticity of Scotch Whisky based on gas chromatography coupled to high resolution mass spectrometry Michal
More informationWe will start momentarily at 2pm ET. Download slides & presentation ONE WEEK after the webinar:
ACS Webinars We will start momentarily at 2pm ET Download slides & presentation ONE WEEK after the webinar: http://acswebinars.org/noble-grapes Contact ACS Webinars at acswebinars@acs.org Have Questions?
More informationGC/MS BATCH NUMBER: E10106
GC/MS BATCH NUMBER: E10106 ESSENTIAL OIL: EUCALYPTUS LEMON ORGANIC BOTANICAL NAME: EUCALYPTUS CITIODORA ORIGIN: MADAGASCAR KEY CONSTITUENTS PRESENT IN THIS BATCH OF EUCALYPTUS LEMON ORGANIC OIL % CITRONELLAL
More informationDetermination of Volatile Compounds in Romanian White Wines by Headspace Solid-phase Micro-extraction and Gas Chromatography Mass Spectrometry
Determination of Volatile Compounds in Romanian White Wines by Headspace Solid-phase Micro-extraction and Gas Chromatography Mass Spectrometry ANAMARIA HANGANU 1*, MARIA-CRISTINA TODASCA 2, FULVIA-ANCUTA
More informationDetermination of Ochratoxin A in Roasted Coffee According to DIN EN 14132
Deteration of Ochratoxin A in Roasted Coffee According to DIN EN 14132 Application Note Food Testing & Agriculture Pesticides, Mycotoxins & Other Contaants Author Edgar Naegele Agilent Technologies, Inc.
More informationAppNote 2/2003. Wine Discrimination using a Mass Spectral Based Chemical Sensor KEYWORDS ABSTRACT
AppNote 2/2003 Wine Discrimination using a Mass Spectral Based Chemical Sensor Vanessa R. Kinton, Edward A. Pfannkoch Gerstel, Inc., Caton Research Center, 1510 Caton Center Drive, Suite H, Baltimore,
More informationCERTIFICATE OF ANALYSIS - GC PROFILING
Date : March 29, 2018 CERTIFICATE OF ANALYSIS - GC PROFILING SAMPLE IDENTIFICATION Internal code : 18C20-ALZ3-1-CC Customer identification : Rosemary Type : Essential oil Source : Rosmarinus officinalis
More informationQuantitative Measurement of Sesquiterpenes in Various Ginger Samples by GC-MS/MS
Human Journals Research Article April 2015 Vol.:3, Issue:1 All rights are reserved by Sreeraj Gopi et al. Quantitative Measurement of Sesquiterpenes in Various Ginger Samples by GC-MS/MS Keywords: ginger,
More informationGC/MS BATCH NUMBER: CA0101
GC/MS BATCH NUMBER: CA0101 ESSENTIAL OIL: CINNAMON CASSIA BOTANICAL NAME: CINNAMOMUM CASSIA ORIGIN: CHINA KEY CONSTITUENTS PRESENT IN THIS BATCH OF CINNAMON OIL % (E)-CINNAMALDEHYDE 79.1 (E)-O-METHOXYCINNAMALDEHYDE
More informationSpeciated Arsenic Analysis in Wine Using HPLC-ICP-QQQ
Application Note Food Testing and Agriculture Speciated Arsenic Analysis in Wine Using HPLC-ICP-QQQ Validation of an extended FDA Elemental Analysis Manual method Authors C. K. Tanabe, 1 H. Hopfer, 1,2,3
More informationEnhancing the Flexibility of the NGC Chromatography System: Addition of a Refractive Index Detector for Wine Sample Analysis
Enhancing the Flexibility of the NGC Chromatography System: Addition of a Refractive Index Detector for Wine Sample Analysis Kiranjot Kaur, Tim Wehr, and Jeff Habel Bio-Rad Laboratories, Inc., 2 Alfred
More informationBag-In-Box Package Testing for Beverage Compatibility
Bag-In-Box Package Testing for Beverage Compatibility Based on Proven Plastic Bottle & Closure Test Methods Standard & Analytical Tests Sensory evaluation is subjective but it is the final word or approval.
More informationExtraction of Multiple Mycotoxins From Animal Feed Using ISOLUTE Myco SPE Columns prior to LC-MS/MS Analysis
Application Note AN804 Extraction of Multiple Mycotoxins From Animal Feed Using ISOLUTE Myco Page 1 Extraction of Multiple Mycotoxins From Animal Feed Using ISOLUTE Myco SPE Columns prior to LC-MS/MS Analysis
More information3. Aspirin Analysis. Prelaboratory Assignment. 3.1 Introduction
In this experiment, you will analyze the purity of your crude and recrystallized aspirin products using a method called thin layer chromatography (TLC). You will also determine the percent yield of your
More informationAnalysis of volatile compounds in beer of extruded rice as adjunct by headspace sampling-gas chromatography
IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS) e-issn: 2319-2380, p-issn: 2319-2372. Volume 10, Issue 10 Ver. II (October 2017), PP 13-17 www.iosrjournals.org Analysis of volatile compounds
More informationEFFECT OF TOMATO GENETIC VARIATION ON LYE PEELING EFFICACY TOMATO SOLUTIONS JIM AND ADAM DICK SUMMARY
EFFECT OF TOMATO GENETIC VARIATION ON LYE PEELING EFFICACY TOMATO SOLUTIONS JIM AND ADAM DICK 2013 SUMMARY Several breeding lines and hybrids were peeled in an 18% lye solution using an exposure time of
More informationCHAPTER 1 INTRODUCTION
CHAPTER 1 INTRODUCTION 1.1. Background Bread is one of the most widely-consumed food products in the world and breadmaking technology is probably one of the oldest technologies known. This technology has
More informationGC/MS BATCH NUMBER: EG0101
GC/MS BATCH NUMBER: EG0101 ESSENTIAL OIL: EUCALYPTUS DIVES BOTANICAL NAME: EUCALYPTUS DIVES ORIGIN: KEY CONSTITUENTS PRESENT IN THIS BATCH OF EUCALYPTUS DIVES OIL % PIPERITONE 51.0 α-phellandrene 19.9
More informationElemental Analysis of Yixing Tea Pots by Laser Excited Atomic. Fluorescence of Desorbed Plumes (PLEAF) Bruno Y. Cai * and N.H. Cheung Dec.
Elemental Analysis of Yixing Tea Pots by Laser Excited Atomic Fluorescence of Desorbed Plumes (PLEAF) Bruno Y. Cai * and N.H. Cheung 2012 Dec. 31 Summary Two Yixing tea pot samples were analyzed by PLEAF.
More informationCERTIFICATE OF ANALYSIS - GC PROFILING
Date : February 23, 2018 CERTIFICATE OF ANALYSIS - GC PROFILING SAMPLE IDENTIFICATION Internal code : 18B20-PLG4-1-CC Customer identification : Peppermint Type : Essential oil Source : Mentha x piperita
More informationFilbertone as a Marker for the Assessment of Hazelnut Spread Quality
Filbertone as a Marker for the Assessment of Hazelnut Spread Quality Helena Čížková, Aleš Rajchl, Jitka Šnebergrová and Michal Voldřich Department of Food Preservation, Faculty of Food and Biochemical
More informationSeparations. Objective. Background. Date Lab Time Name
Objective Separations Techniques of separating mixtures will be illustrated using chromatographic methods. The natural pigments found in spinach leaves, β-carotene and chlorophyll, will be separated using
More informationJournal of Chromatography A
Journal of Chromatography A, 1216 (2009) 3012 3022 Contents lists available at ScienceDirect Journal of Chromatography A journal homepage: www.elsevier.com/locate/chroma Headspace solid-phase microextraction
More informationHigh Sensitivity Quantitation Method of Dicyandiamide and Melamine in Milk Powders by Liquid Chromatography Tandem Mass Spectrometry
PO-CON1459E High Sensitivity Quantitation Method of Dicyandiamide and in Milk Powders by Liquid Chromatography ASMS 214 TP275 Zhi Wei Edwin Ting 1, Jing Cheng Ng 2*, Jie Xing 1 & Zhaoqi Zhan 1 1 Customer
More informationCERTIFICATE OF ANALYSIS - GC PROFILING
Date : April 24, 2018 CERTIFICATE OF ANALYSIS - GC PROFILING SAMPLE IDENTIFICATION Internal code : 18D17-HBN9-1-CC Customer identification : Peppermint Oil - India - 98182 Type : Essential oil Source :
More information