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Food Chem

Title:		Free terpene evolution during the berry maturation of five Vitis vinifera L. cultivars
Author(s):		Luo J; Brotchie J; Pang M; Marriott PJ; Howell K; Zhang P;
Address:		"School of Agriculture and Food, Faculty of Veterinary & Agricultural Sciences, The University of Melbourne, Royal Parade, Parkville, Victoria 3010, Australia. School of Chemistry, Monash University Clayton, Victoria 3800, Australia. School of Agriculture and Food, Faculty of Veterinary & Agricultural Sciences, The University of Melbourne, Royal Parade, Parkville, Victoria 3010, Australia. Electronic address: pangzhen.zhang@unimelb.edu.au"
Journal Title:		Food Chem
Year:		2019
Volume:		20190629
Issue:
Page Number:		125101 -
DOI:		10.1016/j.foodchem.2019.125101
ISSN/ISBN:		1873-7072 (Electronic) 0308-8146 (Linking)
Abstract:		"Terpenes and their derivatives, terpenoids, are important biomarkers of grape quality as they contribute to flavor and aroma of grape and wine. The evolution of terpene and terpenoids throughout grapevine phenological development cycles is not well understood. The current study investigated the volatile profiles of free terpene and terpenoid of five widely grown Vitis vinifera L. cultivars (Shiraz, Cabernet Sauvignon, Riesling, Chardonnay and Pinot Gris), at different phenological stages from fruit-set to harvest. 17 Monoterpenoids, 3 norisoprenoid and 13 sesquiterpenoids were identified and quantified. Discriminant analysis revealed that for each grape cultivar, free terpene profiles at different E-L stages were distinctive. When integrating total sugar, total terpenes and the cumulated heat index, it could be found that flavor ripening was more consistent with sugar ripening in the warmer vintage 2016. Comparing the two red wine varieties, the overall development patterns of total monoterpenes, norisoprenoids and sesquiterpenes were similar"
Keywords:		Australia Fruit/growth & development/metabolism Norisoprenoids/analysis/metabolism Sesquiterpenes/analysis/metabolism Species Specificity Terpenes/analysis/*metabolism Vitis/*growth & development/*metabolism Volatile Organic Compounds/analysis Wine/analys;
Notes:		"MedlineLuo, Jiaqiang Brotchie, Jessica Pang, Meng Marriott, Philip John Howell, Kate Zhang, Pangzhen eng England 2019/07/20 Food Chem. 2019 Nov 30; 299:125101. doi: 10.1016/j.foodchem.2019.125101. Epub 2019 Jun 29"