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IVES 9 IVES Conference Series 9 Macrowine 9 Macrowine 2010 9 Molecular effects of stress and vineyard management 9 Postharvest elicitors and metabolic changes in wine grape berries

Postharvest elicitors and metabolic changes in wine grape berries

Abstract

Wine grape berries respond to postharvest treatments with specific gaseous elicitors in terms of metabolic changes and composition. Short-term (3 days) high (30 KPa) CO2 treatment affects phenol compound concentration in skins of ‘Trebbiano toscano’ berries. In particular a transient increase of the (+)-catechin and (-)-epicatechin concentrations was observed in CO2-treated samples. Even though grape berries are classified as non-climacteric, postharvest treatment with gaseous ethylene (1,000 ppm for 36h) on ‘Sangiovese’ berries was effective in maintaining total phenol and anthocyanin concentration. Ethylene treatment also affected the concentration of the wine aroma compounds (C13, esters, phenols) by increasing the free/glycosylated aroma compound ratio in the wine obtained from treated berries.

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Publication date: July 3, 2024

Issue: Macrowine 2010

Type: Article

Authors

Lamia CHKAIBAN1, Elisa BECATTI2, Annamaria RANIERI2, Pietro TONUTTI1

1Scuola Superiore Sant’Anna, Pisa, I.

2Dipartimento di Biologia delle Piante Agrarie, Università di Pisa, I.

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Keywords

carbon dioxide, ethylene, polyphenols

Tags

IVES Conference Series | Macrowine | Macrowine 2010

Citation

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