Effects of Leaf Removal and UV-B on Flavonoids, Amino Acids and Methoxypyrazines
|
|
- Kelley McLaughlin
- 5 years ago
- Views:
Transcription
1 Effects of Leaf Removal and UV-B on Flavonoids, Amino Acids and Methoxypyrazines Professor Brian Jordan Centre for Viticulture & Oenology, Lincoln University
2 What are the major factors to be considered that will influence the levels of these compounds? Is the effect on the fruit biochemical composition simply due to the removal of the leaf as the source? And or when you open up the leaf canopy: Is the increased UV-B directly bringing about a change in biochemical composition? What are the other factors that need to be considered-development, temperature, humidity, visible light, change in the grape microbiology- and more!
3 Experimental Design Vineyard treatments: Control: naturally grow LR: Leaf removal around the fruiting zone UV+: LR + Acrylic UV-: LR + Polycarb UVB-: LR + PETG 1 % Transmission UV-B UV-A Wavelength (nm) Acrylic PETG Polycarb
4 Effects of Leaf Removal and UV-B on Amino Acids Amino acids are a major source of nitrogen and precursors for other important compounds
5 Aromatic compounds Phenolics Flavonols Anthocyanins Tannins Phe Proline (non-yan) YAN Protein biosynthesis Methoxypyrazines Val Leu Ser Cys Glu Gly Thiols Thr Ser Glu Esters Thr Ser Phe Leu Lys Pro Thr Ser Glu Higher alcohols Acids
6 Source-sink relationship between leaves and berries. N assimilation NO3- Glutamine Glutamine export Glutamine Glutamate Other amino acids
7 Leaf removal treatments had no significant effect on berry soluble solids and berry weight through development Total Soluble Solids ( Brix) Total Soluble Solids ( Brix) CONTROL PRE POST 5 CONTROL PRE POST Berry Weight (g) Berry Weight (g) CONTROL PRE POST CONTROL PRE POST
8 Leaf removal treatments have a significant effect on total amino acid accumulation through development Total Amino Acids (μm) CONTROL PRE POST
9 Leaf removal treatments affect a qualitative change in individual amino acids in the grape CONTROL PRE POST Arginine (μm) Arginine (% of Total Amino Acids) CONTROL PRE POST CONTROL PRE POST Proline (μm) Proline (% of Total Amino Acids) CONTROL PRE POST
10 Leaf removal treatments have a significant effect on amino acids correlated to flavour and aroma in wine CONTROL PRE POST Phenylalanine (μm) Methionine (μm) Threonine (μm) Serine (μm)
11 Effects of canopy manipulation on juice amino acids levels Leaf removal at any stage will reduce total amino acid levels The non YAN amino acid proline will increase to highest level at harvest irrespective of canopy treatment The decreased levels of amino acids is not due to UV-B, but loss of import from leaves Does UV-B increase PR proteins, enhancing plant defence, but reducing quality-role of development? It is important to understand amino acid metabolism in leaves and berries- using molecular technology
12 Effects of Leaf Removal and UV-B on Flavonoids Flavonoids are major components of grape and contribute to a range of attributes from antioxidants to colour
13 Direct effect of UV-B on grapes Effects on microbiome and biochemistry
14 LR & UV have no effects on berry development Brix Control LR UV + UVB - Season 211 Total soluble solids accumulation during berry development Weeks post-veraison Control LR UV + UVB - Season 211 Fresh weight (g) Tissue weight at harvest Whole berry Skin Seed Pulp
15 UV-B increases total UV-absorbing compounds Total Flavonoids (Ab 352nm ) Total Flavonoids (Ab 352nm ) Control LR UV + UVB weeks after veraison Control LR UV + UVB - Pulp Seed Skin Juice Season 211 Total flavonoid accumulation in whole berry during berry development Season 211 Total flavonoid accumulation in different tissues at harvest
16 UV-B stimulates flavonoid biosynthesis 5 Flavonol (µg/g fresh skin) Retention time These changes take place in the grape skin; LC-MS identify quercetin-3-o-glucoside (RT 14.9), quercetin-3-o-glucuronide (RT 15.6), kaempferol-3-o-glucoside (RT 16.6).
17 Implications of UV-B/Light exposure for viticulture management UV-B exposure can have a positive effect to increase the levels of flavonoids Changes in berry skin characteristics, such as permeability, will be induced by UV-B exposure and could influence skin contact application Exposure of the grapes could reduce disease pressure by a direct effect of UV-B on pathogens or enhancing the plants own defence The impact of UV-B on nitrogenous compounds, such as PR proteins (major cause of haze in wine) remains uncertain The canopy management/uv-b balance will have an important effect on grape juice/wine properties (ageing, levels of proteins, antioxidant status, etc)
18 Effects of Leaf Removal and UV-B on Methoxypyrazines Methoxypyrazines are a major component of Sauvignon blanc wine aroma
19 Indirect effect canopy management Development, humidity, temperature and visible light
20 Methoxypyrazine levels between seasons and after leaf removal
21 Relative expression of O-methyltransferase (VvOMT) genes
22 Accumulated growing degree days (DD) difference from the long-term average (LTA) DD - difference from long-term average (LTA) 1 Veraison 5 LTA -5 Veraison Veraison -25 Jul Aug Sep Oct Nov Dec Jan Feb Mar Apr May Jun Month
23 Factors influencing methoxypyrazine juice levels Maximum levels are achieved pre-veraison and will determine levels at harvest The season s climate has a significant effect with cool temperatures giving higher levels Maintaining leaves, particularly pre-veraison and in a cool season, will increase levels; the biology is unclear The region (climate) will influence the levels
24 Conclusions Exposure to UV-B directly determines the levels of flavonoids (also other antioxidants and microflora) Amino acid levels are determined by leaf removal, but the final composition in the fruit is determined by metabolism within the berry Methoxypyrazine levels can be influenced by leaf removal, although seasonal conditions must be considered
25 Acknowledgements Scott Gregan Linlin Liu Stephen Stilwell, Jenny Zhao, Jason Breitmeyer and Dr Richard Sedcole Dr Chris Winefield Professor Brian Jordan (Programme Leader) Support From: Foundation for Research, Science & Technology (Sauvignon blanc programme) New Zealand Winegrowers Plant & Food Research Lincoln University Acknowledgement to the population of Christchurch and Lincoln University staff during the recent Earthquakes
26 Thank You
Phenolics of WA State Wines*
Phenolics of WA State Wines* Jim Harbertson Washington State University * And Grapes! Introduction Impacts of deficit irrigation on grape and wine phenolics Impacts of grape ripening on wine phenolic development
More informationGrape Berry Ripening: Environmental Drivers and Spoilers
Grape Berry Ripening: Environmental Drivers and Spoilers Bogs et al. (2007) Markus Keller A winemaker s dream Loose clusters Small berries Uniform composition Nature s reality Large spatial and temporal
More informationImpact of Vineyard Practices on Grape and Wine Composition
Impact of Vineyard Practices on Grape and Wine Composition James A. Kennedy UC Davis April 20, 2018 Davis, CA Outline Assumption: Managing wine composition in the vineyard is effective General thoughts
More informationInfluence of Viticultural Practices on Juice Yeast Assimilable Nitrogen
Influence of Viticultural Practices on Juice Yeast Assimilable Nitrogen James A. Kennedy, Clinton Nelson, Kaan Kurtural Department of Viticulture and Enology California State University, Fresno Sonoma
More informationNitrogen is a key factor that has a significant
WINEMAKING PRACTICAL WINERY & VINEYARD Nitrogen Plays Many Roles During Fermentation Uncovering the relationship between nitrogen and aroma development By Anne Ortiz-Julien, Ann Dumont, Edouard Lordat
More informationGrowing Grapes for White Wine Production: Do s and Don ts in the Vineyard
Washington Winegrowers Convention Kennewick, WA, February 6-8, 2018 Growing Grapes for White Wine Production: Do s and Don ts in the Vineyard Markus Keller Aroma, flavor: Volatiles for white wine Norisoprenoids
More informationSession Six Postharvest quality, outturn. New Zealand and Australia Avocado Grower s s Conference September 2005 Tauranga,, New Zealand
Session Six Postharvest quality, outturn New Zealand and Australia Avocado Grower s s Conference 05 20-22 22 September 2005 Tauranga,, New Zealand Is Ripening and Post Harvest Quality Affected by Fruit
More informationSession 4: Managing seasonal production challenges. Relationships between harvest time and wine composition in Cabernet Sauvignon.
Session 4: Managing seasonal production challenges Relationships between harvest time and wine composition in Cabernet Sauvignon Keren Bindon Cristian Varela, Helen Holt, Patricia Williamson, Leigh Francis,
More informationDo lower yields on the vine always make for better wine?
Grape and wine quality Increasing quality Do lower yields on the vine always make for better wine? Nick Dokoozlian Viticulture, & Enology E&J Gallo ry Do lower yields on the vine always make for better
More informationINVESTIGATIONS INTO THE RELATIONSHIPS OF STRESS AND LEAF HEALTH OF THE GRAPEVINE (VITIS VINIFERA L.) ON GRAPE AND WINE QUALITIES
INVESTIGATIONS INTO THE RELATIONSHIPS OF STRESS AND LEAF HEALTH OF THE GRAPEVINE (VITIS VINIFERA L.) ON GRAPE AND WINE QUALITIES by Reuben Wells BAgrSc (Hons) Submitted in fulfilment of the requirements
More informationLate season leaf health CORRELATION OF VINEYARD IMAGERY WITH PINOT NOIR YIELD AND VIGOUR AND FRUIT AND WINE COMPOSITION. 6/22/2010
// Not all vineyard blocks are uniform This is because of soil variation primarily, especially in factors which affect the supply of water This has a direct effect on vine vigour, which in turn has a direct
More informationMONTHLY COFFEE MARKET REPORT
E MONTHLY COFFEE MARKET REPORT May 2014 After five consecutive months of rising prices, the coffee market reversed lower in May. From a high of 179 cents/lb in April, the daily price of the ICO composite
More informationGrapes, the essential raw material determining wine volatile. composition. It s not just about varietal characters.
Grapes, the essential raw material determining wine volatile composition. It s not just about varietal characters. Paul Boss and Eric Dennis Food Futures Flagship and CSIR Plant Industry, P Box 350 Glen
More informationFlavonoids in grapes. Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey. 11 June 2014 PLANT INDUSTRY
Flavonoids in grapes Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey 11 June 2014 PLANT INDUSTRY Grapes to wine a 2 metabolic zoo Grapevines Hundreds of different metabolites determine Wine
More informationBerry sugar and water loading. Principles and a few observations
Berry sugar and water loading Principles and a few observations Prof Alain Deloire deloire@sun.ac.za Department of Viticulture and Oenology Stellenbosch University UC-Davis, 10 May 2012 Berry sugar and
More informationCoffee prices maintain downward trend as 2015/16 production estimates show slight recovery
Coffee prices maintain downward trend as 2015/16 production estimates show slight recovery The coffee market fell again in December 2015, reaching its second lowest monthly average of the year. This decrease
More informationFlavonoids in grapes. Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey. ASVO SEMINAR : MILDURA, 24 July 2014 AGRICULTURE FLAGSHIP
Flavonoids in grapes Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey ASVO SEMINAR : MILDURA, 24 July 2014 AGRICULTURE FLAGSHIP Flavonoids in grapes Grape Flavonoids Flavonoids are important
More informationWashington State Wine 101
Washington State Wine 101 Washington 2 nd Largest Producer in US Washington State produces: Premium wines of superior quality Range of varieties Distinctive character Unique balance of Old World and New
More informationSFR Condo Residential Lot Sales Inventory Sales Inventory Sales Inventory. Month YTD Month Month YTD Month Month YTD Month
Grand Strand Market Report 2016 Sales activity in the Grand Strand ended 2016 with a solid month of sales. SFR sales are up 2.0% for the month and up 4.1% for the year; setting a new market record for
More informationFresh Produce Report. P13: 12 w/e 3rd January Kantar Worldpanel
Fresh Produce Report P13: 12 w/e 3rd January 2016 1 HOW IS TOTAL PRODUCE PERFORMING? Total Produce is worth 2.1bn and is growing by 4.1% compared to the same period last year. Much of this is driven by
More informationTechnical note. How much do potential precursor compounds contribute to reductive aromas in wines post-bottling?
Technical note How much do potential precursor compounds contribute to reductive aromas in wines post-bottling? Introduction The formation of unpleasant reductive aromas in wines is an issue of concern
More informationChallenges and Opportunities in a Changing Climate. Christian E. Butzke 2 nd Vice President ASEV Enology Professor Purdue University
Challenges and Opportunities in a Changing Climate & Christian E. Butzke 2 nd Vice President ASEV Enology Professor Purdue University butzke@purdue.edu 1.765.494.6500 enology.butzke.com Outline Vintage-to-Vintage
More informationMike Trought Plant and Food Research Marlborough Research Centre Blenheim, New Zealand
Coping Strategies for a Warmer Climate: Irrigation and Canopy Management Mike Trought Plant and Food Research Marlborough Research Centre Blenheim, New Zealand Total producing area 2015 = 35,859 ha
More informationMeasured effects of elevated temperature on vine phenology, yield, berry and wine attributes
Measured effects of elevated temperature on vine phenology, yield, berry and wine attributes Victor Sadras, Martin Moran & Paul Petrie South Australian R&D Institute, Treasury Wine Estates Funded by Grape
More informationVWT 272 Class 14. Quiz 12. Number of quizzes taken 16 Min 3 Max 30 Mean 21.1 Median 21 Mode 23
VWT 272 Class 14 Quiz 12 Number of quizzes taken 16 Min 3 Max 30 Mean 21.1 Median 21 Mode 23 Lecture 14 Phenolics: The Dark Art of Winemaking Whether at Naishapur or Babylon, Whether the Cup with sweet
More informationSFR Condo Residential Lot Sales Inventory Sales Inventory Sales Inventory. Month YTD Month Month YTD Month Month YTD Month
Grand Strand Market Report 2017 SFR sales activity slides in as full year production flat to 2016. Tightening inventory contributing to SFR sales price growth. Condo sales volume and median sales prices
More informationThe impact of smoke exposure on different grape varieties. Renata Ristic and Kerry Wilkinson
The impact of smoke exposure on different grape varieties Renata Ristic and Kerry Wilkinson Flavours Colour Tannins TA ph Anthocyanins SMOKE TAINT MAGIC BOX OF KNOWLEDGE What Grape to do varieties in a
More informationOregon Wine Advisory Board Research Progress Report
Grape Research Reports, 1996-97: Fermentation Processing Effects on Anthocyanin and... Page 1 of 10 Oregon Wine Advisory Board Research Progress Report 1996-1997 Fermentation Processing Effects on Anthocyanin
More informationSmoke Taint Risk Management Tools
Smoke Taint Risk Management Tools Glynn Ward, Art Diggle, Michael Saam-Renton 2, and Michael Airey 2, Kristen Kennison, Diana Fisher, Drew Haswell 3, John Gillard 3 Department of Agriculture and Food WA
More informationCoffee prices rose slightly in January 2019
Coffee prices rose slightly in January 2019 In January 2019, the ICO composite indicator rose by 0.9% to 101.56 US cents/lb as prices for all group indicators increased. After starting at a low of 99.16
More informationMitigation, adaptation or innovation?
Mitigation, adaptation or innovation? Mardi Longbottom mardi.longbottom@awri.com.au @The_AWRI #newclimate The AWRI Mitigation, adaptation or innovation? Mitigation Adaptation Extension and outreach Why
More informationFruit maturity and quality. Azra Alikadić Web Valley 2016, San Lorenzo Dorsino
Fruit maturity and quality Azra Alikadić Web Valley 2016, San Lorenzo Dorsino Quality - Quality implies the degree of excellence of a product or its suitability for a particular use. - Which combines:
More informationSFR Condo Residential Lot Sales Inventory Sales Inventory Sales Inventory. Month YTD Month Month YTD Month Month YTD Month
Grand Strand Market Report 2018 was a strong month for sales activity in the Grand Strand with SFR and condo sales volume up 5.11% and 19.14%, respectively, for the month. Residential lot sales are also
More informationEffects of Plastic Covers on Canopy Microenvironment and Fruit Quality. Matthew Fidelibus Viticulture & Enology UC Davis
Effects of Plastic Covers on Canopy Microenvironment and Fruit Quality Matthew Fidelibus Viticulture & Enology UC Davis Justification and importance Table grapes are costly to produce Late-harvested fruit
More informationRecord Exports for Coffee Year 2016/17
Record Exports for Coffee Year 2016/17 Total exports in September 2017 reached 8.34 million bags, compared to 9.8 million in September 2016. While coffee year 2016/17 registered a decrease in its final
More informationCoffee market remains volatile but lacks direction
Coffee market remains volatile but lacks direction Prices fluctuated significantly during August, with the ICO composite indicator dropping by 10 cents before jumping back up another 12 cents by the end
More informationFlavor and Aroma Biology
Flavor and Aroma Biology limonene O OCH3 O H methylsalicylate phenylacetaldehyde O H OCH3 benzaldehyde eugenol O H phenylacetaldehyde O neral O geranial nerolidol limonene Florence Zakharov Department
More informationOptimising harvest date through use of an integrated grape compositional and sensory model
Optimising harvest date through use of an integrated grape compositional and sensory model Alain DELOIRE, Katja ŠUKLJE, Guillaume ANTALICK, Campbell MEEKS, John W. BLACKMAN & Leigh M. SCHMIDTKE National
More informationA Climate for Sauvignon Blanc: Lake County
A Climate for Sauvignon Blanc: Lake County Viala et al (1901) Traite General de Viticulture Gregory V. Jones Director: Center for Wine Education Professor: Wine Studies & Environmental Studies Lake County,
More informationThe influence of Cabernet Sauvignon grape maturity on the concentration and extraction of colour and phenolic compounds in wine
The influence of Cabernet Sauvignon grape maturity on the concentration and extraction of colour and phenolic compounds in wine Cynthia C. Yonker A thesis submitted for fulfillment of the degree of Doctor
More informationThe Changing Landscape of Dairy: A Regional Outlook. Mark Stephenson Director of Dairy Policy Analysis
The Changing Landscape of Dairy: A Regional Outlook Mark Stephenson Director of Dairy Policy Analysis Millions of Pounds Let s remember when 32,000 30,000 28,000 Wisconsin Annual Milk Production It s the
More informationWine is G x E x M, twice
Growing quality grapes in a warming climate Victor Sadras, Martin Moran, Marcos Bonada, Paul Petrie Wine is G x E x M, twice 7 th Australian Wine Industry Environment Conference, 5 Sep 1 The phenotype
More informationGrowing your blend Georgia Wine Producers Conference. January 24, Cain Hickey
Growing your blend 2018 Georgia Wine Producers Conference January 24, 2018 Cain Hickey Why blend? Single cultivar does not have the desired: Composition Therefore, sensory features and microbial stability
More informationAvocado sugars key to postharvest shelf life?
Proceedings VII World Avocado Congress 11 (Actas VII Congreso Mundial del Aguacate 11). Cairns, Australia. 5 9 September 11 Avocado sugars key to postharvest shelf life? I. Bertling and S. Z. Tesfay Horticultural
More informationProblem Set #3 Key. Forecasting
Problem Set #3 Key Sonoma State University Business 581E Dr. Cuellar The data set bus581e_ps3.dta is a Stata data set containing annual sales (cases) and revenue from December 18, 2004 to April 2 2011.
More informationSFR Condo Residential Lot Sales Inventory Sales Inventory Sales Inventory. Month YTD Month Month YTD Month Month YTD Month
Grand Strand Market Report 2017 Grand Strand market activity took a slight step back in after 3 months of steady growth. SFR sales volume dropped 5.7% for the month but is still up 7.2% year-to-date. The
More informationIMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION
IMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION A. Oberholster, R. Girardello, L. Lerno, S. Eridon, M. Cooper, R. Smith, C. Brenneman, H. Heymann, M. Sokolowsky, V. Rich, D. Plank, S. Kurtural
More informationCrop Load Management of Young Vines
Crop Load Management of Young Vines UC ANR Foothill Grape Day March 29, 2018 George Zhuang UC Cooperative Extension - Fresno County Thanks for Having Me Here! What is Crop Load? Crop load (Ravaz Index)
More informationRhonda Smith UC Cooperative Extension, Sonoma County
Berry Shrivel Research Update 2005 and 2006 investigations Rhonda Smith UC Cooperative Extension, Sonoma County Note: This update includes a summary of research conducted by Mark Krasow, Post Doctoral
More informationAn Introduction to StellarTan Premium Tannins. Gusmer June 6, 2018 Windsor, CA
An Introduction to StellarTan Premium Tannins Gusmer June 6, 2018 Windsor, CA Outline General information Berry composition, wine production, tannin extraction, wine composition Tannins Chemistry, perception,
More informationAssessments of Ripeness:
Assessments of Ripeness: Anita Oberholster in the Foothills: On- the- Road February 27, 2015 Photo s courtesy of Prof. P. Goussard IntroducBon Physiological changes during ripening Seeds, skins, pulp ComposiBonal
More informationPrices for all coffee groups increased in May
Prices for all coffee groups increased in May In May 2018, the ICO composite indicator increased by 0.7% to an average of 113.34 US cents/lb, following three months of declines. Prices for all coffee groups
More informationInfluence of climate and variety on the effectiveness of cold maceration. Richard Fennessy Research officer
Influence of climate and variety on the effectiveness of cold maceration Richard Fennessy Research officer What is pre-fermentative cold maceration ( cold soak ) and what are the benefits? Introduction
More informationEffects of feeding brown midrib dwarf. performance and enteric methane. pearl millet silage on lactational. emission in dairy cows
Effects of feeding brown midrib dwarf pearl millet silage on lactational performance and enteric methane emission in dairy cows M. Harper 1, A. Melgar 1, G. Roth 2, and A. N. Hristov 1 The Pennsylvania
More informationRecord exports in coffee year 2017/18
Record exports in coffee year 2017/18 Total coffee exports increased each year since 2010/11 with a new record reached in 2017/18 at 121.86 million bags, 2% higher than 2016/17. In the twelve months ending
More informationFlavor and Aroma Biology
Flavor and Aroma Biology limonene O OCH3 O H methylsalicylate phenylacetaldehyde O H OCH3 benzaldehyde eugenol O H phenylacetaldehyde O neral O geranial nerolidol limonene Florence Zakharov Department
More informationGrowing divergence between Arabica and Robusta exports
Growing divergence between Arabica and Robusta exports In April 218, the ICO composite indicator decreased by.4% to an average of 112.56, with the daily price ranging between 11.49 and 114.73. Prices for
More informationMONTHLY COFFEE MARKET REPORT
1 E MONTHLY COFFEE MARKET REPORT March 2014 Ongoing uncertainty over the Brazilian coffee crop has caused significant fluctuations in coffee prices during March, with monthly volatility of the International
More informationDeficit Irrigation Scheduling for Quality Winegrapes
Deficit Irrigation Scheduling for Quality Winegrapes Terry Prichard, Water Management Specialist Dept. LAWR, Hydrology UC Davis Improving Fruit Quality Improving Fruit Quality Crop Crop Load Management
More informationBerry = Sugar Sink. Source: Sink Relationships in the Grapevine. Source: Sink Relations. Leaf = Photosynthesis = Source
Source: Sink Relationships in the Grapevine S. Kaan Kurtural Department of Viticulture and Enology Source: Sink Relations Leaf = Photosynthesis = Source Berry = Sugar Sink 2 3/4/2018 1 Sink growing apex
More informationCoffee market ends 2016/17 coffee year in deficit for the third consecutive year
Coffee market ends 2016/17 coffee year in deficit for the third consecutive year The ICO composite indicator continued its downward trend that started at the end of August, averaging 124.46 US cents/lb.
More informationAN ENOLOGY EXTENSION SERVICE QUARTERLY PUBLICATION
The Effects of Pre-Fermentative Addition of Oenological Tannins on Wine Components and Sensorial Qualities of Red Wine FBZDF Wine. What Where Why How 2017 2. October, November, December What the authors
More informationCoffee Season 2013/14 Finishes in Balance but Deficit Expected Next Year
Coffee Season 2013/14 Finishes in Balance but Deficit Expected Next Year Coffee prices were volatile again over the course of September, mostly reacting to weather news from Brazil. Daily prices fell initially
More informationOak and Grape Tannins: The Trouble with Tannins. J. Harbertson Washington State University
Oak and Grape Tannins: The Trouble with Tannins J. Harbertson Washington State University Barrel Aging O 2 ph Heat Oak Tannins Grape Tannins The Aging Process Wines get Less Astringent as they age? The
More informationUse of natural bios/mulants to improve the quality of grapevine produc/on
Use of natural bios/mulants to improve the quality of grapevine produc/on Giovan Ba;sta Ma;i, Eleonora Cataldo, Linda Salvi, Sandro Secco SIPCAM and DiSPAA - Università degli Studi di Firenze To understand
More informationUnderstanding Nitrogen, Phosphorus, and Potassium in Grapes. R. Paul Schreiner USDA - ARS - HCRL Corvallis, OR
Understanding Nitrogen, Phosphorus, and Potassium in Grapes R. Paul Schreiner USDA - ARS - HCRL Corvallis, OR Research Profile Schreiner Lab Root Physiology in Grapes Defining & Characterizing AMF Diversity
More informationOUTLINE Plan of the talk. Introduction Vineyards are variable in space The efficient vineyard project. The field site in Sonoma Results
UCCE Sonoma County Grape Day February 8, 2017 Assessing variability in the vineyard through a spatially explicit selective-harvest approach A case study in Sonoma L. Brillante, A. Beebee, R. Yu, J. Martinez,
More informationInfluence of yeast strain choice on the success of Malolactic fermentation. Nichola Hall Ph.D. Wineries Unlimited, Richmond VA March 29 th 2012
Influence of yeast strain choice on the success of Malolactic fermentation Nichola Hall Ph.D. Wineries Unlimited, Richmond VA March 29 th 2012 INTRODUCTION Changing conditions dictate different microbial
More informationVolatility returns to the coffee market as prices stay low
Volatility returns to the coffee market as prices stay low Daily coffee prices hit their lowest level in 19 months during August, as commodity markets worldwide were negatively affected by currency movements
More informationPrice monitoring of key food items in Donetsk and Luhansk Oblasts
Market update Issue (October ) UKRAINE Price monitoring of key food items in Donetsk and Luhansk Oblasts Fighting hunger worldwide Highlight Cost of food basket remained higher at national level throughout
More informationCoffee market ends 2017/18 in surplus
Coffee market ends 217/18 in surplus World coffee production in coffee year 217/18 is estimated 5.7% higher at 164.81 million bags as output of Arabica increased by 2.2% to 11.82, and Robusta grew 11.7%
More informationAnalysis of Resveratrol in Wine by HPLC
Analysis of Resveratrol in Wine by HPLC Outline Introduction Resveratrol o o Discovery Biosynthesis HPLC separation Results Conclusion Introduction Composition of flavoring, coloring and other characteristic
More informationINCREASING PICK TO PACK TIMES INCREASES RIPE ROTS IN 'HASS' AVOCADOS.
: 43-50 INCREASING PICK TO PACK TIMES INCREASES RIPE ROTS IN 'HASS' AVOCADOS. J. Dixon, T.A. Elmlsy, D.B. Smith and H.A. Pak Avocado Industry Council Ltd, P.O. Box 13267, Tauranga 3110 Corresponding author:
More informationBotrytis Decision Support:
The New Zealand Institute for Plant & Food Research Limited Botrytis Decision Support: Predicting and managing botrytis bunch rot Robert Beresford and Gareth Hill Plant & Food Research, Auckland Managing
More informationQUARTERLY REVIEW OF THE PERFORMANCE OF THE DAIRY INDUSTRY 1
QUARTERLY REVIEW OF THE PERFORMANCE OF THE DAIRY INDUSTRY 1 The information in this document is from sources deemed to be correct. Milk SA, the MPO and SAMPRO are not responsible for the results of any
More informationCoffee market ends 2014 at ten month low
Coffee market ends 2014 at ten month low Coffee prices continued to slide downwards in December 2014, with the monthly average of the ICO composite indicator at its lowest level since February. Recent
More informationON GRAPE AND WINE COMPOSITION
IMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION AND QUALITY ANITA OBERHOLSTER UCCE Sonoma Grape Day February 18 th, 2015 Introduction Grapevine red blotch-associated virus (GRBaV) First described
More informationDR. RENEE THRELFALL RESEARCH SCIENTIST INSTITUTE OF FOOD SCIENCE & ENGINEERING UNIVERSITY OF ARKANSAS
Challenges in Muscadine Juice and Wine Production DR. RENEE THRELFALL RESEARCH SCIENTIST INSTITUTE OF FOOD SCIENCE & ENGINEERING UNIVERSITY OF ARKANSAS RTHRELF@UARK.EDU Muscadine juice and wine production
More informationTESTING WINE STABILITY fining, analysis and interpretation
TESTING WINE STABILITY fining, analysis and interpretation Carien Coetzee Stephanie Steyn FROM TANK TO BOTTLE Enartis Stabilisation School Testing wine stability Hazes/colour/precipitate Oxidation Microbial
More informationMONTHLY COFFEE MARKET REPORT
E MONTHLY COFFEE MARKET REPORT February 2014 February 2014 has seen significant developments in the coffee market, with prices shooting upwards at a startling rate. The ICO composite daily price has increased
More informationFor personal use only
SEPTEMBER 216 GLOBAL DAIRY UPDATE European milk production has decreased for the first time since early 215, with volumes in June down 2 compared to last year. Last week we announced our annual results,
More informationIMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION AND QUALITY
IMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION AND QUALITY ANITA OBERHOLSTER Foothills Grape Day 2016: Healthy Vines, Fine Wines Amador County Fairgrounds, Spur Emporium Building May 18 th,
More informationVITICISION. Vineyard Microclimates: What s your ripening curve? Get a Grape s-eye View
Vineyard Microclimates: What s your ripening curve? VITICISION Get a Grape s-eye View J. Lohr Vineyards & Wines Project Goals: To measure Cabernet Sauvignon microclimates. Find sunburn probability in different
More informationRelationship between Fruit Color (ripening) and Shelf Life of Cranberries: Physiological and Anatomical Explanation
Relationship between Fruit Color (ripening) and Shelf Life of Cranberries: Physiological and Anatomical Explanation 73 Mustafa Özgen, Beth Ann A. Workmaster and Jiwan P. Palta Department of Horticulture
More informationCitrus Canker? What went wrong last season? Pamela D Roberts Southwest Florida REC Immokalee April 10, 2012
Citrus Canker? What went wrong last season? Pamela D Roberts Southwest Florida REC Immokalee April 10, 2012 Disease Triangle ENVIRONMENT PATHOGEN HOST Disease Triangle ENVIRONMENT Xanthomonas citri subsp.
More informationRotting Grapes to Perfection: Winemaking. James Osborne PhD, Dept Food Science Oregon State University
Rotting Grapes to Perfection: Winemaking James Osborne PhD, Dept Food Science Oregon State University Who I am and how I got here Grew up in Auckland, New Zealand, on a Dairy farm How I got here Soil
More informationComposition and Value of Loin Primals
Composition and Value of Loin Primals Tom J. Baas, Ph.D. Iowa State University Pork producers today are interested in adding value over and above traditional commodity markets to the hogs they produce
More informationInfluence of foliar application of phenylalanine and urea at two doses to vineyards on grape volatile composition and amino acids content
Vitis 57, 137 141 (2018) DOI: 10.5073/vitis.2018.57.137-141 Influence of foliar application of phenylalanine and urea at two doses to vineyards on grape volatile composition and amino acids content T.
More informationCultivation Pattern:
Introduction: Cumin seed commonly know as Jeera (Cuminum cyminum) belongs to Apiacae family. Though Cumin is a native of Egypt, it now mostly produced in India. India is the largest producer and consumer
More informationFlavor and Aroma Biology
Flavor and Aroma Biology utline Introduction to our sensory system and the perception of flavor Relationships between fruit composition and flavor perception Fruit biology and development of flavor components
More information2013 Vintage Weather Summary for Two Blondes Vineyard
2013 Vintage Weather Summary for Two Blondes Vineyard Prepared by: Mark Greenspan, Ph.D. Joe Gallucci M.S. Soils, M.S.. Viticulture Advanced Viticulture, Inc. www.advancedvit.com Introduction This is a
More informationSugar scenario in CIS countries:
Sugar scenario in CIS countries: on the way to self-sufficiency Andrey Bodin Eurasian Sugar Association Commonwealth of Independent States (CIS) consists of 11 countries CIS Moldova Belarus Population
More informationVarietal Specific Barrel Profiles
RESEARCH Varietal Specific Barrel Profiles Beaulieu Vineyard and Sea Smoke Cellars 2006 Pinot Noir Domenica Totty, Beaulieu Vineyard Kris Curran, Sea Smoke Cellars Don Shroerder, Sea Smoke Cellars David
More informationPruning decisions for premium sparkling wine production. Dr Joanna Jones
Pruning decisions for premium sparkling wine production Dr Joanna Jones Background Cane pruning dominates Perceived basal bud infertility is the basis for pruning decision Cane pruning is considerably
More informationGrapevine Cold Hardiness And Injury: Dynamics and Management
Grapevine Cold Hardiness And Injury: Dynamics and Management Dr. Robert Wample California State University- Fresno Low Temperature Tolerance Vs Avoidance Tolerance Supercooling Avoidance (?)(Permanent
More information[ application note note ] ]
[ application note note ] ] AC QUIT Y U P L C FO R T H E R A P I D ANA LYSIS O F AM INO AC I DS IN W IN E Andrew Aubin, Matthew Hynes and John Shockcor Waters Corporation, Milford, MA, USA INT RODUCTION
More informationMichigan Grape & Wine Industry Council Annual Report 2012
Michigan Grape & Wine Industry Council Annual Report 2012 Title: Determining pigment co-factor content in commercial wine grapes and effect of micro-oxidation in Michigan Wines Principal Investigator:
More informationBell peppers (Capsicum annuum L.) grown under diffuse glass. Christien Sauviller Research Centre Hoogstraten Meerle, Belgium
Bell peppers (Capsicum annuum L.) grown under diffuse glass Christien Sauviller Research Centre Hoogstraten Meerle, Belgium Pepper production in Belgium Bell pepper: red, green, yellow, orange Heated greenhouse
More informationManagement and research of fruit rot diseases in vineyards
Management and research of fruit rot diseases in vineyards Bryan Hed, Henry Ngugi, and Noemi Halbrendt Department of Plant Pathology Penn State University Botrytis Bunch rot Late season condition, ripening.
More informationWorld coffee consumption increases but prices still low
World coffee consumption increases but prices still low The coffee market stabilised slightly in February, but prices remain at very low levels. A lack of news regarding fundamentals with expectations
More information