التفاصيل البيبلوغرافية
| العنوان: |
Postharvest wine grape dehydration: ethanol dissipation from grape and biochemical changes. |
| المؤلفون: |
Bianchi, Alessandro, Pettinelli, Stefano, Santini, Gregorio, Taglieri, Isabella, Zinnai, Angela, Petriccione, Milena, Magri, Anna, Modesti, Margherita, Cerreta, Raffaele, Bellincontro, Andrea |
| المصدر: |
Journal of the Science of Food & Agriculture; Feb2024, Vol. 104 Issue 3, p1591-1598, 8p |
| مصطلحات موضوعية: |
ACETALDEHYDE, ALCOHOL dehydrogenase, ANAEROBIC metabolism, DEHYDRATION, ETHANOL, LACTATE dehydrogenase |
| الشركة/الكيان: |
SOCIETY of Chemical Industry (Great Britain) |
| مستخلص: |
BACKGROUND: During postharvest dehydration, grapes are subject to metabolic changes including ethanol anabolism and catabolism. These changes affect the quality of the final product and ethanol production is a key step. Ethanol dissipation has never been measured during postharvest wine grape dehydration. Thus, the present study aimed to: (i) monitor ethanol dissipation and (ii) investigate chemical–biochemical changes in berries during dehydration. RESULTS: Ethanol dissipation from Raboso grapes, under controlled postharvest dehydration, was found to comprise up to 36% of weight loss (w.l.). Moreover, the activity of enzymes involved in the anaerobic metabolism of grapes was investigated. Ethanol dissipation was highly correlated with grape weight loss (r2 = 0.989). Alcohol dehydrogenase activity, responsible for the reduction of ethanol to acetaldehyde, declined significantly with w.l. Similarly, pyruvate decarboxylase and lactate dehydrogenase reduced their activity. High lipoxygenase activity was measured at 27% w.l., whereas polyphenol oxidation was constant and declined in the last sampling. CONCLUSION: Ethanol dissipation during postharvest dehydration allows for reducing anaerobic metabolism and promotes oxidative metabolism. The sensor used can be a useful commercial tool for monitoring berry metabolism. © 2023 Society of Chemical Industry. [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of the Science of Food & Agriculture is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
