Flavonoids in grapes. Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey. 11 June 2014 PLANT INDUSTRY

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Flavonoids in grapes. Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey. 11 June 2014 PLANT INDUSTRY"

Transcription

1 Flavonoids in grapes Simon Robinson, Mandy Walker, Rachel Kilmister and Mark Downey 11 June 2014 PLANT INDUSTRY

2 Grapes to wine a 2 metabolic zoo Grapevines Hundreds of different metabolites determine Wine Quality Grape variety Soil, climate etc Vineyard management Seasonal influences Harvest timing Grapes Transport & storage Processing Fermentation Pressing Added tannin, oak etc Ageing Many of these compounds are synthesised in the grape berry Consumer Wine

3 Flavonoids in grapes Grape Flavonoids Flavonoids are important for the colour & taste of wine Tannins are the major flavonoid present in grapes and wine Tannins plus anthocyanins form pigmented polymers mg/kg Red Grapes Flavonols Tannins Anthocyanins

4 Flavonoids a diverse range of compounds Basic anthocyanin structure Complex metabolic pathway 1,000 s of different flavonoids Pathway can be manipulated Moon series carnations : on sale since 1996

5 Flavonoid biosynthetic pathway in grape Dihydroflavonols DFR Leucoanthocyanidin LDOX Anthocyanidin UFGT F3 5 H Anthocyanins Malvidin-3-glucoside Coumaroyl-CoA CHS Chalcones CHI Flavanones F3H F3 H Dihydroflavonols DFR Leucoanthocyanidin LDOX Anthocyanidin UFGT Anthocyanins FLS LAR ANR Good knowledge of this pathway in grapes FGT Catechin Epicatechin Flavonols? Tannins

6 Tannin synthesis and maturation Colour & tannin during development Anthocyanins are synthesised after veraison Tannins and flavonols are made between flowering & veraison Tannin maturation occurs from veraison to harvest

7 Regulatory Master Genes control the pathway Regulatory Genes Control the Pathway Regulatory Genes (bhlh & MYB) Structural Pathway Genes TANNINS Enzymes ANTHOCYANINS MYBA controls colour in grapes FLAVONOLS Red White grape seedlings Test for DNA marker Predicts fruit colour

8 MYBA controls anthocyanin synthesis Black Chardonnay gain of VvMYBA gene expression Chardonnay MYBA promoter 35S promoter Pink and White Shiraz reduction of VvMYBA gene expression Shiraz Pink White

9 Formation of tannin polymers Leucocyanidin LDOX Anthocyanidin LAR ANR Catechin Epicatechin? Tannins Leucocyanidin Catechin Epicatechin Flavan-3-ols

10 Tannin Synthesis - the First Steps Formation of tannin polymers Extension unit Extension units Monomers Dimer Terminal unit Trimer Terminal unit Tannin Polymer Leucocyanidin Catechin Epicatechin Flavan-3-ols N=3-200

11 Tannins ain t tannins! HO A 5 OH 4 O C OH 3' OH B 4' 5' R OR 2 OH OH n Extension Subunit HO O R 1 OH OR 2 OH OH HO O R 1 Interflavan Bond OH HO OR 2 O OH OH OH OR 2 Terminal Subunit Seed tannins mdp 5 units Skin tannins mdp 25 units Different polymer composition We need to know about tannin composition, as well as the total amount

12 Tannin composition Sunraysia Shiraz 2008 Epicatechin gallate Sunraysia Cabernet Sauvignon 2008 Epicatechin gallate Epicatechin Epigallotatechin Epicatechin Epigallotatechin Epicatechin gallate Catechin Sunraysia Shiraz 2009 Catechin Glenrowan Shiraz 2009 Epicatechin gallate Epigallotatechin Epigallotatechin Epicatechin Epicatechin Catechin Catechin

13 Role of ANR & LAR in tannin synthesis using transgenic grapevines Silence the genes for ANR & LAR to decrease their enzyme activity and determine the effect on tannin synthesis and grape tannin composition Silence the grape LAR gene Leucoanthocyanidin LDOX Anthocyanidin LAR ANR Catechin Epicatechin No obvious phenotype!? Tannins UFGT Anthocyanins Silence the grape ANR gene

14 Silencing tannin genes Anthocyanin Flavonol leaves roots berries leaves seeds skins VvANR Si More cyanidin normal More cyanidin More flavonols Lots of flavonols More flavonols Tannin skins Less tannin seeds Same tannin? Shiraz VvANR Si leaves Less tannin Less tannin in leaves & grape skins from ANR Si lines (10-30% Controls) Changes in composition extension units have less epicatechin, more catechin & epigallocatechin Seed tannin slightly lower (70-85% Controls) Impact on wine?

15 How do you manage colour in the vineyard? Where are you now? Where do you want to be? More grape colour? Better colour extraction & stability? Better anthocyanin composition? Season & site are the biggest drivers of variation Day and night temperatures Practices that effect colour include: Yield / vigour / vine balance Rootstocks Irrigation Canopy management / bunch exposure Vineyard variability Based on grape or wine observations?

16 How do you manage tannin in the vineyard? Where are you now? Where do you want to be? More tannin Less tannin Different tannin Better tannin Smooth tannin Soft tannin Persistent tannin Based on grape or wine observations?

17 Grape tannin versus wine tannin How much tannin is in the grapes? How much of that tannin is extracted into must? How stable is the tannin in the wine? Wine Tannin = Grape Tannin x Extractability x Stability If the tannin isn t extracted during winemaking, there s no point trying to get more into the grapes.

18 Tannin (mg/g FWT berry) Season effects 3.0 Sunraysia Shiraz- whole berries at harvest

19 Carignane (n=5) Barbera (n=18) Rubired (n=149) Zinfandel (n=68) Grenache (n=13) Carnelian (n=3) Durif (n=8) Shiraz (n=73) Ruby Cabernet (n=33) Cabernet Sauvignon (n=77) Merlot (n=154) Chardonnay (n=3) Total Tannin (mg/g fresh weight whole berry) Variation between varieties 5.0 ~600 grape samples 4.0 whole berry homogenate 3.0 Californian vineyards

20 Tannin mg/g fwt berry Varietal differences and site effects Sunraysia Yarra Valley Mornington SHIRAZ CABERNET SAUVIGNON PINOT NOIR SHIRAZ CABERNET SAUVIGNON PINOT NOIR SHIRAZ CABERNET SAUVIGNON Sunraysia Yarra Valley Mornington PINOT NOIR

21 Viticultural management Season is the biggest driver of variation Understanding other drivers creates management strategies Practices that effect tannins might include: Irrigation Canopy management Trellis design Nutrient status Pruning Harvest date Cover crop Mulching Rootstock

22 Total Anthocyanin (mg/g whole berry) Total Tannin (mg/g whole berry) Yield California Anthocyanin r 2 = Tannin r 2 = Yield (kg/m 2 ) Yield (kg/m 2 )

23 Total Tannin (mg/g berry) Total Tannin (mg/g berry) Sustained deficit irrigation Sunraysia Cabernet Sauvignon 43% 52% 70% 100% Shiraz 35% 45% 65% 100% Large seasonal variation Irrigation has no major effect on tannin synthesis It may effect vigour, berry size and tannin extractability

24 Tannin (mg/g fwt skin) Rootstocks Sunraysia Shiraz PAULSEN 140 RUGGERI DOGRIDGE FREEDOM MG5512 MG6262 MS1010 MS3769 RAMSEY

25 Vine vigour Sunraysia Shiraz Averaged Verasion to Harvest 2007 Canopy Assessments Tannins at Harvest 2007 Canopy Assessments (EAS) Tannins (mg/g berry CE) Meters

26 Phenolics (mg/g berry) Vine vigour Anthocyanin tannin PhenolicsFeReact r² = r² = r² = Canopy Assessment (EAS)

27 Vineyard variability Sunraysia Shiraz Sum of normalised Tannins Lowest Low Moderate High Highest Sum of normalised anthocyanins Lowest Low Moderate High Highest

28 Vineyard variability Tannins (mg/g berry CE) Meters Tannins at Harvest

29 Summary Tannin synthesis to veraison Tannin maturation post-veraison Measurement Tannin composition & extractability Season & site Yield / vigour / vine balance Irrigation Rootstocks Vineyard variability

30 Thank you Simon Robinson CSIRO Plant Industry Flavonoids in grapes t e w PLANT INDUSTRY

Flavonoids 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 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 information

Tannin Management in the Vineyard

Tannin Management in the Vineyard Fact Sheet MAY 2010 Tannin Management in the Vineyard Author: Dr Mark Downey Group Leader, Plant Production Sciences, Mildura Senior Research Scientist, Viticulture & Oenology ccwrdc GRAPE AND WINE RESEARCH

More information

Questions. Today 6/21/2010. Tamar Pilot Winery Research Group. Tamar Pilot Winery Research Group. Phenolic Compounds in Wine

Questions. Today 6/21/2010. Tamar Pilot Winery Research Group. Tamar Pilot Winery Research Group. Phenolic Compounds in Wine Questions Where in the grape berry do most of the important phenolic compounds in wine come from? How are skin tannins different from seed tannins Why are Pinot noir wines generally lighter in color than

More information

IMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION

IMPACT 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 information

Condensed tannin and cell wall composition in wine grapes: Influence on tannin extraction from grapes into wine

Condensed tannin and cell wall composition in wine grapes: Influence on tannin extraction from grapes into wine Condensed tannin and cell wall composition in wine grapes: Influence on tannin extraction from grapes into wine by Rachel L. Hanlin Thesis submitted for Doctor of Philosophy The University of Adelaide

More information

Production, Perfection, Perception

Production, Perfection, Perception MAY/JUNE 2007 1 Grape and Wine Tannins Production, Perfection, Perception BY James Kennedy, Department of Food Science & Technology Oregon State University, Corvallis, OR james.kennedy@oregonstate.edu

More information

EFFECTS OF GLOBAL WARMING ON BERRY COMPOSITION OF cv. SANGIOVESE: BIOCHEMICAL AND MOLECULAR ASPECTS AND AGRONOMICAL ADAPTATION APPROACHES

EFFECTS OF GLOBAL WARMING ON BERRY COMPOSITION OF cv. SANGIOVESE: BIOCHEMICAL AND MOLECULAR ASPECTS AND AGRONOMICAL ADAPTATION APPROACHES Alma Mater Studiorum Università di Bologna DOTTORATO DI RICERCA IN Colture Arboree ed Agrosistemi Forestali, Ornamentali e Paesaggistici Ciclo XXV Settore Concorsuale di afferenza: 07/B2 Settore Scientifico

More information

VWT 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 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 information

The influence of viticultural treatments on the accumulation of flavonoid compounds in grapes and their contribution to wine quality

The influence of viticultural treatments on the accumulation of flavonoid compounds in grapes and their contribution to wine quality The influence of viticultural treatments on the accumulation of flavonoid compounds in grapes and their contribution to wine quality Nicole Cordon B. Biotechnology (Hons), The Flinders University of South

More information

From the ASEV 2005 Phenolics Symposium Phenolics and Ripening in Grape Berries. Douglas O. Adams*

From the ASEV 2005 Phenolics Symposium Phenolics and Ripening in Grape Berries. Douglas O. Adams* Phenolics and Ripening in Grape Berries 249 From the ASEV 2005 Phenolics Symposium Phenolics and Ripening in Grape Berries Douglas O. Adams* Abstract: A key objective of this review is to describe the

More information

Growing Cabernet Sauvignon at Wynns Coonawarra Estate

Growing Cabernet Sauvignon at Wynns Coonawarra Estate Growing Cabernet Sauvignon at Wynns Coonawarra Estate The influence of vintage, clones and site Ben Harris Vineyard Manager Wynns Coonawarra Estate Coonawarra Red and White Winegrape Varieties Red (90%)

More information

Understanding the climatic, site, canopy and cultural factors affecting Pinot Noir expression in the vineyard

Understanding the climatic, site, canopy and cultural factors affecting Pinot Noir expression in the vineyard Understanding the climatic, site, canopy and cultural factors affecting Pinot Noir expression in the vineyard DR ANDREW PIRIE HONORARY RESEARCH ASSOCIATE TASMANANIAN INSTITUTE OF AGRICULTURE VITI FACTORS

More information

Effects of Leaf Removal and UV-B on Flavonoids, Amino Acids and Methoxypyrazines

Effects of Leaf Removal and UV-B on Flavonoids, Amino Acids and Methoxypyrazines Effects of Leaf Removal and UV-B on Flavonoids, Amino Acids and Methoxypyrazines Professor Brian Jordan Centre for Viticulture & Oenology, Lincoln University What are the major factors to be considered

More information

Tannin Strategies for Red Hybrid Wines. Anna Katharine Mansfield

Tannin Strategies for Red Hybrid Wines. Anna Katharine Mansfield BUILDING THE PERFECT BODY Tannin Strategies for Red Hybrid Wines Cornell Enology Extension Lab Associate Professor of Enology Anna Katharine Mansfield WHAT ARE TANNINS? Plant polyphenolics capable of cross-linking

More information

Do lower yields on the vine always make for better wine?

Do 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 information

Late season leaf health CORRELATION OF VINEYARD IMAGERY WITH PINOT NOIR YIELD AND VIGOUR AND FRUIT AND WINE COMPOSITION. 6/22/2010

Late 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 information

Berry = Sugar Sink. Source: Sink Relationships in the Grapevine. Source: Sink Relations. Leaf = Photosynthesis = Source

Berry = 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 information

EVOLUTION OF PHENOLIC COMPOUNDS DURING WINEMAKING AND MATURATION UNDER MODIFIED ATMOSPHERE

EVOLUTION OF PHENOLIC COMPOUNDS DURING WINEMAKING AND MATURATION UNDER MODIFIED ATMOSPHERE EVOLUTION OF PHENOLIC COMPOUNDS DURING WINEMAKING AND MATURATION UNDER MODIFIED ATMOSPHERE A. Bimpilas, D. Tsimogiannis, V. Oreopoulou Laboratory of Food Chemistry and Technology, School of Chemical Engineering,

More information

The wine industry. a model for climate change attribution and adaptation studies. Professor Snow Barlow, ATSE,FAIAST

The wine industry. a model for climate change attribution and adaptation studies. Professor Snow Barlow, ATSE,FAIAST The wine industry a model for climate change attribution and adaptation studies Professor Snow Barlow, ATSE,FAIAST Viticulture the canary in the coalmine Evolution of Vitis vinifera Vitis vinifera evolved

More information

INVESTIGATIONS 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 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 information

Effects of Abiotic Factors on Phenolic Compounds in the Grape Berry A Review

Effects of Abiotic Factors on Phenolic Compounds in the Grape Berry A Review Effects of Abiotic Factors on Phenolic Compounds in the Grape Berry A Review E. H. Blancquaert 1 *, A. berholster 2, J. M. Ricardo-da-Silva 3, A.J. Deloire 4 (1) Department of Viticulture and enology,

More information

Growing Grapes for White Wine Production: Do s and Don ts in the Vineyard

Growing 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 information

Grape Berry Ripening: Environmental Drivers and Spoilers

Grape 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 information

OUTLINE Plan of the talk. Introduction Vineyards are variable in space The efficient vineyard project. The field site in Sonoma Results

OUTLINE 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 information

Transcriptional regulation of anthocyanin biosynthesis in ripening fruits of grapevine under seasonal water deficit

Transcriptional regulation of anthocyanin biosynthesis in ripening fruits of grapevine under seasonal water deficit Plant, Cell and Environment (2007) 30, 1381 1399 doi: 10.1111/j.1365-3040.2007.01716.x Transcriptional regulation of anthocyanin biosynthesis in ripening fruits of grapevine under seasonal water deficit

More information

Berry Phenolics of Grapevine under Challenging Environments

Berry Phenolics of Grapevine under Challenging Environments Int. J. Mol. Sci. 2013, 14, 18711-18739; doi:10.3390/ijms140918711 Review OPEN ACCESS International Journal of Molecular Sciences ISSN 1422-0067 www.mdpi.com/journal/ijms Berry Phenolics of Grapevine under

More information

IMPACT OF RED BLOTCH DISEASE ON GRAPE AND WINE COMPOSITION AND QUALITY

IMPACT 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 information

Understanding Cap Extraction in Red Wine Fermentations

Understanding Cap Extraction in Red Wine Fermentations Understanding Cap Extraction in Red Wine Fermentations Max Reichwage, Larry Lerno, Doug Adams, Ravi Ponangi, Cyd Yonker, Leanne Hearne, Anita Oberholster, and David Block Driving innovation in grape growing

More information

Crop Load Management of Young Vines

Crop 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 information

GRAPE MATURITY. Section 1.

GRAPE MATURITY. Section 1. GRAPE MATURITY Learning Outcomes: After reviewing this chapter, the reader will understand the importance and complexity of grape maturity evaluations. The changes occurring in berry development, factors

More information

Optimising 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 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 information

World of Wine: From Grape to Glass

World of Wine: From Grape to Glass World of Wine: From Grape to Glass Course Details No Prerequisites Required Course Dates Start Date: th 18 August 2016 0:00 AM UTC End Date: st 31 December 2018 0:00 AM UTC Time Commitment Between 2 to

More information

The Influence of Cap Management and Fermentation Temperature. The Influence of Cap Management and Fermentation Temperature

The Influence of Cap Management and Fermentation Temperature. The Influence of Cap Management and Fermentation Temperature The Influence of Cap Management and Fermentation Temperature Larry Lerno, Cristina Medina Plaza, Jordan Beaver, Konrad Miller, Siriwan Panprivech, Ravi Ponangi, Leanne Hearne, Tom Blair, Anita Oberholster,

More information

Bunch Shading During Different Developmental Stages Affects the Phenolic Biosynthesis in Berry Skins of Cabernet Sauvignon Grapes

Bunch Shading During Different Developmental Stages Affects the Phenolic Biosynthesis in Berry Skins of Cabernet Sauvignon Grapes J. AMER. SOC. HORT. SCI. 133(6):743 753. 2008. Bunch Shading During Different Developmental Stages Affects the Phenolic Biosynthesis in Berry Skins of Cabernet Sauvignon Grapes Kazuya Koyama 1 and Nami

More information

REASONS FOR THE RISE IN ALCOHOL LEVELS IN NAOUSSA PDO WINES. Presented by Yiannis Karakasis MW

REASONS FOR THE RISE IN ALCOHOL LEVELS IN NAOUSSA PDO WINES. Presented by Yiannis Karakasis MW REASONS FOR THE RISE IN ALCOHOL LEVELS IN NAOUSSA PDO WINES Presented by Yiannis Karakasis MW THE FACTS Alsace +2% PA Napa Valley from 12.5% PA, grapes are currently being harvested above 14% COULD THIS

More information

Influence 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 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 information

IMPOSING WATER DEFICITS TO IMPROVE WINE QUALITY AND REDUCE COSTS

IMPOSING WATER DEFICITS TO IMPROVE WINE QUALITY AND REDUCE COSTS IMPOSING WATER DEFICITS TO IMPROVE WINE QUALITY AND REDUCE COSTS Terry L. Prichard, Water Management Specialist University of California Davis 420 S. Wilson Way, Stockton, CA 95205 (209) 468-2085; fax

More information

Addressing Research Issues Facing Midwest Wine Industry

Addressing Research Issues Facing Midwest Wine Industry Addressing Research Issues Facing Midwest Wine Industry 18th Annual Nebraska Winery and Grape Growers Forum and Trade Show at the Omaha Marriott March 7 th, 2015 Murli R Dharmadhikari Department of Food

More information

Kevin Sass Moderator Winemaker Halter Ranch Vineyards

Kevin Sass Moderator Winemaker Halter Ranch Vineyards Trials Talks Trials Talks Kevin Sass Moderator Winemaker Halter Ranch Vineyards Francois Cordesse Francis Ford Coppola Winery Keith Orlebeck South Cost Winery Cameron Parry Groth Winery and Vineyards Andrew

More information

Development of smoke taint risk management tools for vignerons and land managers

Development of smoke taint risk management tools for vignerons and land managers Development of smoke taint risk management tools for vignerons and land managers Glynn Ward, Kristen Brodison, Michael Airey, Art Diggle, Michael Saam-Renton, Andrew Taylor, Diana Fisher, Drew Haswell

More information

Strategies for reducing alcohol concentration in wine

Strategies for reducing alcohol concentration in wine Strategies for reducing alcohol concentration in wine Cristian Varela Senior Research Scientist Alcohol in Australian wine 2014 2005 Average 13.6% 14.5% Ethanol Godden et al. 2015 Why is alcohol increasing?

More information

World of Wine: From Grape to Glass Syllabus

World of Wine: From Grape to Glass Syllabus World of Wine: From Grape to Glass Syllabus COURSE OVERVIEW Have you always wanted to know more about how grapes are grown and wine is made? Perhaps you like a specific wine, but can t pinpoint the reason

More information

Condensed tannin and cell wall composition in wine grapes: Influence on tannin extraction from grapes into wine

Condensed tannin and cell wall composition in wine grapes: Influence on tannin extraction from grapes into wine Condensed tannin and cell wall composition in wine grapes: Influence on tannin extraction from grapes into wine by Rachel L. Hanlin Thesis submitted for Doctor of Philosophy The University of Adelaide

More information

Fruit maturity and quality. Azra Alikadić Web Valley 2016, San Lorenzo Dorsino

Fruit 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 information

Berry sugar and water loading. Principles and a few observations

Berry 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 information

Università degli Studi di Milano

Università degli Studi di Milano Università degli Studi di Milano CORSO DI DOTTORATO DI RICERCA IN BIOLOGIA VEGETALE E PRODUTTIVITÀ DELLA PIANTA COLTIVATA (65R) AGR07 THE EFFECT OF SHADING ON THE ON THE FLAVONOID PATHWAY DURING GRAPE

More information

Vineyard Water Management

Vineyard Water Management Vineyard Water Management Pierre Helwi Texas A&M AgriLife Extension Service Grape Camp November 7, 2016 Lady Bird Johnson Park Pioneer Pavilion, Fredericksburg, TX Terroir Concept Climate Human factor

More information

Growing high quality Shiraz in the Barossa

Growing high quality Shiraz in the Barossa Growing high quality Shiraz in the Barossa Chris Rogers St Hallett Wines The Barossa first vineyards planted around 1842 Barossa zone ~169,000 hectares 1 13,655 hectares total vineyard, 7140 hectares of

More information

Impacts of Regulated Deficit Irrigation on Cabernet Sauvignon Grapes and Wine

Impacts of Regulated Deficit Irrigation on Cabernet Sauvignon Grapes and Wine Impacts of Regulated Deficit Irrigation on Cabernet Sauvignon Grapes and Wine Jim Harbertson, Richard Larsen, Federico Casassa, Markus Keller Washington State University Viticulture & Enology Program RDI

More information

VITIS vinifera GRAPE COMPOSITION

VITIS vinifera GRAPE COMPOSITION VITIS vinifera GRAPE COMPOSITION Milena Lambri Enology Area - DiSTAS Department for Sustainable Food Process Università Cattolica del Sacro Cuore - Piacenza GRAPE (and WINE) COMPOSITION Chemical composition

More information

Measured 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 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 information

Understanding 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 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 information

INVESTIGATIONS OF WINE AND GRAPE SKIN TANNINS FROM THE OKANAGAN VALLEY. Dawn Michaela Visintainer. B.Sc., The University of British Columbia, 2010

INVESTIGATIONS OF WINE AND GRAPE SKIN TANNINS FROM THE OKANAGAN VALLEY. Dawn Michaela Visintainer. B.Sc., The University of British Columbia, 2010 INVESTIGATIONS OF WINE AND GRAPE SKIN TANNINS FROM THE OKANAGAN VALLEY by Dawn Michaela Visintainer B.Sc., The University of British Columbia, 2010 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS

More information

ARIMNet2 Young Researchers Seminar

ARIMNet2 Young Researchers Seminar ARIMNet2 Young Researchers Seminar How to better involve end-users throughout the research process to foster innovation-driven research for a sustainable Mediterranean agriculture at the farm and local

More information

The 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 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 information

Assessments of Ripeness:

Assessments 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 information

Acid Management in the Vineyard

Acid Management in the Vineyard Acid Management in the Vineyard Bruce Bordelon Purdue University Wine Grape Team 2008 Spring Workshop Factors affecting acidity Variety Temperature (esp. during ripening) Shade/exposure Crop level/balance

More information

The Implications of Climate Change for the Ontario Wine Industry

The Implications of Climate Change for the Ontario Wine Industry The Implications of Climate Change for the Ontario Wine Industry Tony B. Shaw Department of Geography and Cool Climate Oenology and Viticulture Institute Brock University Climate Change Most scientists

More information

AN ABSTRACT OF THE THESIS OF

AN ABSTRACT OF THE THESIS OF AN ABSTRACT OF THE THESIS OF Jose L. Pastor del Rio for the degree of Master of Science in Food Science and Technology presented on July 9, 2004. Title: Development of Anthocyanins and Proanthocyanidins

More information

An Introduction to StellarTan Premium Tannins. Gusmer June 6, 2018 Windsor, CA

An 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 information

Phenolics of WA State Wines*

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 information

Notes on acid adjustments:

Notes on acid adjustments: Notes on acid adjustments: In general, acidity levels in 2018 were lower than normal. Grape acidity is critical for the winemaking process, as well as the quality of the wine. There are 2 common ways to

More information

An Investigation of the Role of the Regulatory Gene VvMYBA1 in Colour, Flavour and Aroma Metabolism Using Transgenic Grapevines

An Investigation of the Role of the Regulatory Gene VvMYBA1 in Colour, Flavour and Aroma Metabolism Using Transgenic Grapevines An Investigation of the Role of the Regulatory Gene VvMYBA1 in Colour, Flavour and Aroma Metabolism Using Transgenic Grapevines By Amy Rinaldo The University of Adelaide School of Agriculture, Food and

More information

Research Note Low Expression of Flavonoid 3,5 -Hydroxylase (F3,5 H) Associated with Cyanidin-based Anthocyanins in Grape Leaf

Research Note Low Expression of Flavonoid 3,5 -Hydroxylase (F3,5 H) Associated with Cyanidin-based Anthocyanins in Grape Leaf Research Note Low Expression of Flavonoid 3,5 -Hydroxylase (F3,5 H) Associated with Cyanidin-based Anthocyanins in Grape Leaf Hironori Kobayashi, 1, 2 * Shunji Suzuki, 1 Fumiko Tanzawa, 2 and Tsutomu Takayanagi

More information

Oregon Wine Advisory Board Research Progress Report

Oregon 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 information

Session 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. 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 information

is pleased to introduce the 2017 Scholarship Recipients

is pleased to introduce the 2017 Scholarship Recipients is pleased to introduce the 2017 Scholarship Recipients Congratulations to Elizabeth Burzynski Katherine East Jaclyn Fiola Jerry Lin Sydney Morgan Maria Smith Jake Uretsky Elizabeth Burzynski Cornell University

More information

Impact of Vineyard Practices on Grape and Wine Composition

Impact 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 information

Harvest Series 2017: Wine Analysis. Jasha Karasek. Winemaking Specialist Enartis USA

Harvest Series 2017: Wine Analysis. Jasha Karasek. Winemaking Specialist Enartis USA Harvest Series 2017: Wine Analysis Jasha Karasek Winemaking Specialist Enartis USA WEBINAR INFO 100 Minute presentation + 20 minute Q&A Save Qs until end of presentation Use chat box for audio/connection

More information

PHENOLIC COMPOUNDS IN GRAPES

PHENOLIC COMPOUNDS IN GRAPES 78 Phenolic compounds PHENOLIC COMPOUNDS IN GRAPES S. Ursu, PhD student Technical University of Moldova INTRODUCTION Phenolic compounds play a major role in enology. They are responsible for all the differences

More information

Deficit Irrigation Scheduling for Quality Winegrapes

Deficit 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 information

Grapevine Mineral Nutrition

Grapevine Mineral Nutrition Grapevine Mineral Nutrition Peter Christensen Viticulture Specialist, Emeritus Department of Viticulture and Enology University of California, Davis UC Kearney Agricultural Center Parlier, CA Vineyard

More information

Mechanical Shoot & Leaf Removal Practices. Sean Dean

Mechanical Shoot & Leaf Removal Practices. Sean Dean Mechanical Shoot & Leaf Removal Practices Sean Dean Introduction Why look for mechanical solutions? Mechanical shoot thinning Murray Valley Mechanical Leaf removal King Valley Limitations Why mechanisation?

More information

Climate Change and its Impact on the Wine World. Outline

Climate Change and its Impact on the Wine World. Outline Climate Change and its Impact on the Wine World James A. Kennedy Department of Viticulture and Enology California State University, Fresno Insight Cruises December 2, 2013 Somewhere on the Rhone Outline

More information

Presented by Jørgen Stølsgård President Berrifine AS

Presented by Jørgen Stølsgård President Berrifine AS Temadag Teknologisk Institut 7. oktober 2008 Tørrede Bær og Frugt Udbud Efterspørgsel og Teknik Presented by Jørgen Stølsgård President Berrifine AS Specializes in Growing, Processing, and Marketing of

More information

Influence of Vine Vigor on Grape (Vitis vinifera L. Cv. Pinot Noir) and Wine Proanthocyanidins

Influence of Vine Vigor on Grape (Vitis vinifera L. Cv. Pinot Noir) and Wine Proanthocyanidins 5798 J. Agric. Food Chem. 2005, 53, 5798 5808 Influence of Vine Vigor on Grape (Vitis vinifera L. Cv. Pinot Noir) and Wine Proanthocyanidins JESSICA M. CORTELL, MICHAEL HALBLEIB, ANDREW V. GALLAGHER, TIMOTHY

More information

www.qudaotech.com www.qudao.com.cn 1 2 4 7 8 -2- Phen absorption properties Phen fluorescence properties UV or visible absorption ranges UV or visible excitation Use of the screening effect by epidermal

More information

Understanding Seasonal Nutritional Requirements

Understanding Seasonal Nutritional Requirements Understanding Seasonal Nutritional Requirements Tips & Tricks Tip 1: Sample Tissue at Critical Times A plant tissue sampling strategy should be implemented each year to monitor vine nutrient status. Follow

More information

Your headline here in Calibri.

Your headline here in Calibri. Pruning and Training Principles for Balanced Vines Your headline here in Calibri. Larry Bettiga Viticulture Advisor Monterey, Santa Cruz and San Benito Counties Simple text is best. Don t read from your

More information

Specific mediterranean characteristics. Mediterranean climate

Specific mediterranean characteristics. Mediterranean climate Effect of global warming in mediterranean conditions Climate change - Average temperatures increase and efficient rainfalls decrease Consequences for vines and grapes - Shortening of phenologic stages

More information

distinct category of "wines with controlled origin denomination" (DOC) was maintained and, in regard to the maturation degree of the grapes at

distinct category of wines with controlled origin denomination (DOC) was maintained and, in regard to the maturation degree of the grapes at ABSTARCT By knowing the fact that on an international level Romanian red wines enjoy a considerable attention, this study was initiated in order to know the possibilities of obtaining in Iaşi vineyard

More information

SA Winegrape Crush Survey Regional Summary Report Adelaide Hills Wine Region

SA Winegrape Crush Survey Regional Summary Report Adelaide Hills Wine Region SA Winegrape Crush Survey Regional Summary Report - 2013 Adelaide Hills Wine Region Adelaide Hills Vintage overview Vintage report Leading into September, the Adelaide Hills experienced near average winter

More information

Monitoring Ripening for Harvest and Winemaking Decisions

Monitoring Ripening for Harvest and Winemaking Decisions Joseph A. Fiola, Ph.D. Specialist in Viticulture and Small Fruit Western MD Research & Education Center 18330 Keedysville Road Keedysville, MD 21756-1104 301-432-2767 ext. 344; Fax 301-432-4089 jfiola@umd.edu

More information

Smoke Taint Update. Thomas Collins, PhD Washington State University

Smoke Taint Update. Thomas Collins, PhD Washington State University Smoke Taint Update Thomas Collins, PhD Washington State University Wildfires and Wine Overview of smoke taint & the 2017 vintage Review of smoke marker compounds Glycosides of smoke related phenols Risk

More information

Canopy Management. M of W 08/02/2012. Plumpton College

Canopy Management. M of W 08/02/2012. Plumpton College Canopy Management M of W 08/02/2012 Plumpton College You recently accepted the vineyard manager position of an established vineyard. Discuss the core issues that you will focus on that will affect wine

More information

Smoke Taint: Effect of wildfires on fruit and wine composition

Smoke Taint: Effect of wildfires on fruit and wine composition UCCE Sonoma County Grape Day February 7, 2019 Smoke Taint: Effect of wildfires on fruit and wine composition Thomas Collins, PhD Washington State University Smoke taint Wines made from vineyards exposed

More information

Coonawarra Wine Region. Regional summary report WINEGRAPE UTILISATION AND PRICING SURVEY 2007

Coonawarra Wine Region. Regional summary report WINEGRAPE UTILISATION AND PRICING SURVEY 2007 Coonawarra Wine Region Regional summary report 2007 WINEGRAPE UTILISATION AND PRICING SURVEY 2007 45 46 Coonawarra Vintage overview Vintage report A low yielding vintage, with warm ripening conditions,

More information

Tissue-specific Accumulation of Flavonoids in Grape Berries is Related to Transcriptional Expression of VvF3 H and VvF3 5 H

Tissue-specific Accumulation of Flavonoids in Grape Berries is Related to Transcriptional Expression of VvF3 H and VvF3 5 H Tissue-specific Accumulation of Flavonoids in Grape Berries is Related to Transcriptional Expression of VvF3 H and VvF3 5 H L. Mu, J.-J. He, Q.-H. Pan, F. He, C.-Q. Duan * Centre for Viticulture and Oenology,

More information

Mark O. Downey, 1 * Nick K. Dokoozlian, 2 and Mark P. Krstic 3

Mark O. Downey, 1 * Nick K. Dokoozlian, 2 and Mark P. Krstic 3 Flavonoid Composition of Grapes and Wine: A Review 257 From the ASEV 2005 Phenolics Symposium Cultural Practice and Environmental Impacts on the Flavonoid Composition of Grapes and Wine: A Review of Recent

More information

LAST PART: LITTLE ROOM FOR CORRECTIONS IN THE CELLAR

LAST PART: LITTLE ROOM FOR CORRECTIONS IN THE CELLAR ROUSSEAU, OCHRATOIN A in WINES LITTLE ROOM FOR CORRECTIONS IN THE CELLAR, PAGE 1 OCHRATOIN A IN WINES: CURRENT KNOWLEDGE LAST PART: LITTLE ROOM FOR CORRECTIONS IN THE CELLAR Jacques Rousseau ICV Viticultural

More information

Field identification, collection and evaluation of grapevine autochthonous cultivars

Field identification, collection and evaluation of grapevine autochthonous cultivars ERA 91/01 Preservation and establishment of true-to-type and virus free material of endangered grapevine cultivars in Croatia and Montenegro Field identification, collection and evaluation of grapevine

More information

Alternative Varieties Research in Western Australia. Kristen Kennison, Richard Fennessy & Glynn Ward Department of Agriculture and Food WA

Alternative Varieties Research in Western Australia. Kristen Kennison, Richard Fennessy & Glynn Ward Department of Agriculture and Food WA Alternative Varieties Research in Western Australia Kristen Kennison, Richard Fennessy & Glynn Ward Department of Agriculture and Food WA Why alternative varieties? Diversity and greater range of flavours

More information

Red Wine Mouthfeel Profile

Red Wine Mouthfeel Profile NORTON WINEMAKERS ROUNDTABLE Chrysalis Vineyards JULY 26, 2004 Features of the Norton grape: high TA low tartaric/malic ratio high concentration gallates and diglucoside pigments aggressive tannins small

More information

AN ENOLOGY EXTENSION SERVICE QUARTERLY PUBLICATION

AN 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 information

Wine is G x E x M, twice

Wine 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 information

The 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 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 information

Grapevine in a changing environment field-oriented research to optimize short-term adaptation measures

Grapevine in a changing environment field-oriented research to optimize short-term adaptation measures Grapevine in a changing environment field-oriented research to optimize short-term adaptation measures Breia R, Martins V, Noronha H, Conde A, Cunha A, Santos J, Moutinho J, Gerós H CITAB - Centro de Investigação

More information

Causes and Prevention of Thompson Seedless Berry Collapse

Causes and Prevention of Thompson Seedless Berry Collapse Causes and Prevention of Thompson Seedless Berry Collapse Davinder Singh, Michael Treeby, Kristen, Pitt and Peter Clingeleffer 7 th International Table Grape Symposium, November 2014 CSIRO AGRICULTURE

More information

Quality of Canadian oilseed-type soybeans 2017

Quality of Canadian oilseed-type soybeans 2017 ISSN 2560-7545 Quality of Canadian oilseed-type soybeans 2017 Bert Siemens Oilseeds Section Contact: Véronique J. Barthet Program Manager, Oilseeds Section Grain Research Laboratory Tel : 204 984-5174

More information

Colorado State University Viticulture and Enology. Grapevine Cold Hardiness

Colorado State University Viticulture and Enology. Grapevine Cold Hardiness Colorado State University Viticulture and Enology Grapevine Cold Hardiness Grapevine cold hardiness is dependent on multiple independent variables such as variety and clone, shoot vigor, previous season

More information