| Title: | "Postharvest UV-B exposure drives changes in primary metabolism, phenolic concentration, and volatilome profile in berries of different grape (Vitis vinifera L.) varieties" |
| Author(s): | Narra F; Castagna A; Palai G; Havlik J; Bergo AM; D'Onofrio C; Ranieri A; Santin M; |
| Address: | "Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy. Interdepartmental Research Center 'Nutraceuticals and Food for Health', University of Pisa, Pisa, Italy. Department of Food Science, Czech University of Life Sciences Prague, Suchdol, Czech Republic" |
| ISSN/ISBN: | 1097-0010 (Electronic) 0022-5142 (Linking) |
| Abstract: | "BACKGROUND: The ultraviolet-B (UV-B) radiation can alter grape metabolism during berry development, but little is known on the effect of postharvest UV-B exposure. In this study, we evaluated the effect of postharvest UV-B exposure on berry primary and secondary metabolites in four grapevine varieties (Aleatico, Moscato bianco, Sangiovese, and Vermentino) in order to evaluate the possibility to increase the grape quality and its nutraceutical properties. RESULTS: The treatment did not significantly affect the berry primary metabolism in terms of organic acids, carbohydrates, and amino acids profile, regardless of the variety. UV-B exposure reduced the total anthocyanin content, particularly the tri-substituted and di-substituted forms in Aleatico and Sangiovese, respectively. An overall negative effect of UV-B irradiation on the flavonols profile of Aleatico, Moscato bianco, and Vermentino berries was found, whereas it enhanced the quercetin, myricetin and kaempferol concentration in Sangiovese. The free fraction of berry volatile organic compounds increased in UV-B-treated Aleatico and Moscato bianco berries, especially C(13) -norisoprenoids and volatile phenols, as well as key monoterpenes, such as the linalool derivatives. However, higher concentrations of glycosylated monoterpenes and C(13) -norisoprenoids were measured in Sangiovese and Vermentino berries treated with UV-B. CONCLUSION: This study provides new insights on the effect of postharvest UV-B radiation on berry secondary metabolism, highlighting a different modulation between varieties and suggesting the potential use of this technique to increase some nutraceutical and quality characteristics of grape berry. (c) 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry" |
| Keywords: | *Vitis/chemistry Fruit/chemistry Norisoprenoids/metabolism Phenols/chemistry Monoterpenes/analysis VOCs amino acids anthocyanins berry aroma flavonols phenolics; |
| Notes: | "MedlineNarra, Federica Castagna, Antonella Palai, Giacomo Havlik, Jaroslav Bergo, Anna Mascellani D'Onofrio, Claudio Ranieri, Annamaria Santin, Marco eng CZ.02.1.01/0.0/0.0/16_019/0000845/European Regional Development Fund/ METROFOOD-CZ/ LM2018100/METROFOOD-CZ research infrastructure project/ England 2023/05/17 J Sci Food Agric. 2023 Oct; 103(13):6340-6351. doi: 10.1002/jsfa.12708. Epub 2023 May 31" |
