italianoenglishfrançaisdeutschespañolportuguês
Language
Search
  • » Vineyard Management
  • » Canopy microclimate: the effect of exposure on the nutraceutic properties of vitis vinifera l cv. dolcetto grape berries.
  • The Future of Oenological Webinars
    Let's Create Together the Most Interesting Content for the Industry!
    We are excited to involve you in the process of creating our oenological content! Your feedback is essential to providing you with articles, webinars and trainings that are truly useful for you and...
    Published on: 01/31/2024

Canopy microclimate: the effect of exposure on the nutraceutic properties of vitis vinifera l cv. dolcetto grape berries.

Francesca CECCHINI, Barbara GIANNINI, M. Cecilia SERR, Simonetta MORETTI; Consiglio per la Ricerca e la Sperimentazione in Agricoltura (CRA)- Velletri

 In grapevine canopies, depending on canopy architecture, leaves and bunches can develop in conditions varying from heavily shaded to fully exposed. Studies on the effect of light exposure on specific phenolic compound and on the nutraceutical properties, evaluated  as  antioxidant activity, in seed and skin extract of Dolcetto grape cultivar are reported. Three levels of bunch exposure were carried out: fully exposed, middle shaded and heavily shaded. The grape was harvest at technological maturation during 2011 and 2012 vintage.

The response of total polyphenol, flavanol, anthocyanin contents and antioxidant activity to treatment conditions was variable an depend on the degree of bunch shading. Grapes that had developed on bunches receiving high levels of light ( fully exposed) for both years, showed a higher berry weigh and a higher  number of seed per berry.

The seed extract from grape fully exposed, in both years,  shows the lower phenolic content and the higher antioxidant activity. While the skin extract from heavily shaded, for both years, showed the higher phenolic content, but the antioxidant activity was higher only in 2011 year. The effects of light on  quali-quantitative berry phenolic content are discussed.  

Poster presented at Enoforum 2013, 7-9 May, Arezzo (Italy)

Published on 02/10/2014
Related sheets
© All Right Reserved
ISSN 1826-1590 VAT: IT01286830334
powered by Infonet Srl Piacenza
- A +
ExecTime : 2,09375