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Influence of Glutathione and Ascorbic Acid Treatments during Vinification of Feteasca Regala Variety and Their Antioxidant Effect on Volatile Profile

University of Agronomic Sciences and Veterinary Medicine of Bucharest, Faculty of Horticulture, Laboratory of Enology, 59 Marasti Ave., Sector 1, 011464 Bucharest, Romania
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Biosensors 2019, 9(4), 140; https://doi.org/10.3390/bios9040140
Received: 9 October 2019 / Revised: 23 November 2019 / Accepted: 2 December 2019 / Published: 5 December 2019
Volatile profiles were determined for white wines of Feteasca regala variety produced from musts in which the antioxidants glutathione and ascorbic acid were added in different proportions before inception of alcoholic fermentation. Treatments with these antioxidants affect some volatile compound evolution and positively influence the wine volatile profile. After one year of storage in bottles with and without carbon dioxide protection the volatile profiles of the wines were assessed by using a Fast GC Alpha MOS Heracles e-Nose by applying a DFA multivariate statistical method and AroChemBase database for compound identification. The analyses showed that some higher alcohols, such as 2-phenylethanol and 2-methyl-1-butanol were in lower concentrations in wines treated with reduced glutathione, while the main ethyl fatty acid esters, such as ethyl butanoate, ethyl hexanoate, ethyl octanoate, and ethyl decanoate were better preserved when higher concentrations of any of the antioxidants were added in must. On the other hand, it was observed that some other volatile compounds were not affected by these applied treatments. View Full-Text
Keywords: e-Nose; DFA; Feteasca regala; wine; volatile profile; glutathione; ascorbic acid; higher alcohols; fatty acid esters e-Nose; DFA; Feteasca regala; wine; volatile profile; glutathione; ascorbic acid; higher alcohols; fatty acid esters
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Cojocaru, G.A.; Antoce, A.O. Influence of Glutathione and Ascorbic Acid Treatments during Vinification of Feteasca Regala Variety and Their Antioxidant Effect on Volatile Profile. Biosensors 2019, 9, 140.

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