The role of polyphenols in oxygen consumption and in the accumulation of acetaldehyde and Strecker aldehydes during wine oxidation

Escudero, Ana (Universidad de Zaragoza) ; Bueno-Aventín, Elena ; Ontañón, Ignacio (Universidad de Zaragoza) ; Fernádez-Zurbano, Purificación ; Ferreira, Vicente (Universidad de Zaragoza)

Resumen: This study explores the role of polyphenols in preventing oxidative deterioration of wine aroma. Wine models containing polyphenols extracted from grapes were fortified with delphinidin-3G (DELF) or catechin (CAT), and oxidized. DELF increased oxygen consumption rates (OCRs) and reduced the Strecker aldehydes (SAs) formation, while CAT decreased OCRs and increased SAs. Further oxidation of models with individual polyphenols: coumaric acid (COU), caffeic acid (CAF), CAT, epigallocatechin (EPIG), malvidin-3G (MV), DELF, quercetin (QUER), and myricetin (MYR) revealed that most polyphenols, except anthocyanins, slowed initial OCRs. Anthocyanins and trihydroxylated polyphenols consumed all oxygen. DELF arises as the ideal sacrificial antioxidant, consuming O2 quickly and quantitatively, avoiding Fenton reaction and SAs accumulation. MV was similar but caused high SAs levels. EPIG and MYR prevented Fenton reaction but induced moderate SAs accumulation. COU hardly consumed O2, but prevented Fenton reaction and did not induce SAs. These findings could help enhance wine quality and stability.

Idioma: Inglés

DOI: 10.1016/j.foodchem.2024.142242

Año: 2024

Publicado en: Food Chemistry 466 (2024), 142242 [10 pp.]
ISSN: 0308-8146

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2021-126031OB-C21
Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2021-126031OB-C22
Financiación: info:eu-repo/grantAgreement/ES/DGA/T53
Financiación: info:eu-repo/grantAgreement/ES/MCIU/FPU17-03410
Financiación: info:eu-repo/grantAgreement/ES/MINECO/AGL2017-87373-C3

Tipo y forma: Article (Published version)

Área (Departamento): Área Química Analítica (Dpto. Química Analítica)