| Title: | Glycosylation of Volatile Phenols in Grapes following Pre-Harvest (On-Vine) vs. Post-Harvest (Off-Vine) Exposure to Smoke |
| Author(s): | Culbert JA; Jiang W; Ristic R; Puglisi CJ; Nixon EC; Shi H; Wilkinson KL; |
| Address: | "The Australian Wine Research Institute, P.O. Box 197, Glen Osmond, SA 5064, Australia. Waite Research Institute, School of Agriculture, Food and Wine, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia. The Australian Research Council Training Centre for Innovative Wine Production, PMB 1, Glen Osmond, SA 5064, Australia. Shandong Academy of Grape, Jinan 250100, China" |
| DOI: | 10.3390/molecules26175277 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "Taint in grapes and wine following vineyard exposure to bushfire smoke continues to challenge the financial viability of grape and wine producers worldwide. In response, researchers are studying the chemical, sensory and physiological consequences of grapevine smoke exposure. However, studies involving winemaking trials are often limited by the availability of suitable quantities of smoke-affected grapes, either from vineyards exposed to smoke or from field trials involving the application of smoke to grapevines. This study compared the accumulation of volatile phenol glycosides (as compositional markers of smoke taint) in Viognier and Cabernet Sauvignon grapes exposed to smoke pre- vs. post-harvest, and found post-harvest smoke exposure of fruit gave similar levels of volatile phenol glycosides to fruit exposed to smoke pre-harvest. Furthermore, wines made from smoke-affected fruit contained similar levels of smoke-derived volatile phenols and their glycosides, irrespective of whether smoke exposure occurred pre- vs. post-harvest. Post-harvest smoke exposure therefore provides a valid approach to generating smoke-affected grapes in the quantities needed for winemaking trials and/or trials that employ both chemical and sensory analysis of wine" |
| Keywords: | Glycosylation/drug effects Phenols/*metabolism Smoke/*adverse effects Vitis/*drug effects/*metabolism Volatile Organic Compounds/*pharmacology acid hydrolysis guaiacol smoke taint syringol wine; |
| Notes: | "MedlineCulbert, Julie A Jiang, WenWen Ristic, Renata Puglisi, Carolyn J Nixon, Elizabeth C Shi, Hongmei Wilkinson, Kerry L eng Rural R&D for Profit grant/Australian Government, Department of Agriculture, Water and the Environment/ Wine Australia/Wine Australia/ Scholarship/Shandong Academy of Agricultural Sciences/ Switzerland 2021/09/11 Molecules. 2021 Aug 31; 26(17):5277. doi: 10.3390/molecules26175277" |
