Climate Change Impacts on Vineyards in Warm and Dry Areas: Challenges and Opportunities: From the ASEV Climate Change Symposium Part 1–Viticulture

M Keller - American Journal of Enology and Viticulture, 2023 - Am Soc Enol Viticulture
Background and goals Climate change is challenging grape production everywhere, but
especially in regions with warm and dry climates. Rising temperatures are increasing the …

Machine learning for classifying and predicting grape maturity indices using absorbance and fluorescence spectra

CEJ Armstrong, AM Gilmore, PK Boss, V Pagay… - Food chemistry, 2023 - Elsevier
Absorbance-transmission and fluorescence excitation-emission matrix (A-TEEM)
spectroscopy was investigated as a rapid method for predicting maturity indices using …

Development of Tannins and Methoxypyrazines in Grape Skins, Seeds, and Stems of Two Pinot Noir Clones during Ripening

PM Wimalasiri, R Harrison, R Hider… - Journal of Agricultural …, 2023 - ACS Publications
Two Pinot noir clones (AM10/5 and UCD5) were analyzed for tannin and methoxypyrazines
(MPs) in different grape tissues during berry development using liquid chromatography and …

Methoxypyrazine concentrations in the grape bunch rachis of Vitis vinifera L. Cv Shiraz: Influence of rootstock, region and light

RD Sanders, PK Boss, DL Capone, CM Kidman… - Food Chemistry, 2023 - Elsevier
Vitis vinifera L. cv Shiraz appears unable to synthesise 3-alkyl-2-methoxypyrazines (MPs) in
the berry, but can still produce significant concentrations in rachis. MPs are readily extracted …

Distribution of 3‐Isobutyl‐2‐methoxypyrazine across Rachis Components of Vitis vinifera Shiraz and Cabernet Sauvignon

RD Sanders, PK Boss, DL Capone… - Australian Journal of …, 2023 - Wiley Online Library
Rootstock can significantly alter the concentration of methoxypyrazines (MPs) in the bunch
stem (rachis) of Vitis vinifera L. cv. Cabernet Sauvignon and Shiraz, which has implications …

Insights into the Uptake, Distribution, and Metabolism of 3-Isobutyl-2-hydroxypyrazine in Grapevine Using a Stable Isotope Tracer

RD Sanders, PK Boss, DL Capone… - Journal of Agricultural …, 2023 - ACS Publications
Methoxypyrazines (MPs) are potent aroma compounds that have been predominately
studied in grape berries but can also be detected in other vine tissues. The synthesis of MPs …

Abscisic acid reduced methoxypyrazines concentration and its derived unpleasant odors in Cabernet Sauvignon grapes and wines

X Cheng, F Liu, X Liu, X Yang - Journal of the Science of Food …, 2024 - Wiley Online Library
BACKGROUND The influences of abscisic acid (ABA) applications on precursors and gene
expression in 3‐alkyl‐2‐methoxypyrazines (MPs) biosynthetic pathway, MPs concentration …

Effect of non‐Saccharomyces yeast strains on 3‐isobutyl‐2‐methoxypyrazine concentration and aroma properties in Sauvignon Blanc wines during fermentation

JC Li, KL Wilkinson, CM Ford… - Australian Journal of …, 2022 - Wiley Online Library
Abstract Background and Aims 3‐Isobutyl‐2‐methoxypyrazine (IBMP) is a compound whose
aroma is reminiscent of green capsicum and is found in many winegrape cultivars, such as …

Grape Heterogeneity Index: Assessment of Overall Grape Heterogeneity Using an Aggregation of Multiple Indicators

CEJ Armstrong, P Previtali, PK Boss, V Pagay… - Plants, 2023 - mdpi.com
Uniform grape maturity can be sought by producers to minimise underripe and/or overripe
proportions of fruit and limit any undesirable effects on wine quality. Considering that grape …