International Scientific Publications
© 2007-2024 Science Events Ltd
Terms of Use  ·  Privacy Policy
Choose language English French Bulgarian
Conference room
Agriculture & Food 2024, 12th International Conference
12-15 August, Burgas, Bulgaria
Call for Papers

Agriculture & Food, Volume 10, 2022

HYDROLYTIC ACTIVITY AND FIRMNESS OF BERRIES FROM SOFT AND FIRM TABLE GRAPE (VITIS VINIFERA) VARIETIES DURING RIPENING
Pilar Hellín, Scheherazade Fuentes, Ángela Manso, Virginia Hernández, José Fenoll, Pilar Flores
Pages: 181-191
Published: 4 Nov 2022
Views: 200
Downloads: 20
Abstract: Grape berries (Vitis vinifera L.) of “Muscat Hamburg” and “Sugraone Seedless”, soft and crisp variety, respectively, were harvested at seven developmental stages, from pre-veraison to ripening. During the first two stages and, in both varieties, a dramatic loss of firmness was observed, which was accompanied by a rapid increase in soluble sugar content and a decrease in acidity. Polygalacturonase, β- galactosidase, galactanase, pectin methylesterase, β-glucanase, α-galactosidase, β-glucosidase and xyloglucanase enzymatic activities in the berries of both varieties showed maximum activity during the pre-veraison and veraison stages, after which they decreased or remained more or less constant until the end of ripening. Throughout ripening, polygalacturonase and galactanase showed by far the highest activity of all the enzymes. During the first stages of ripening, polygalacturonase, galactanase, β- galactosidase and xyloglucanase activities were higher in the soft variety (“Muscat Hamburg"), while pectin methylesterase, β-glucanase and α-galactosidase were higher in the firm variety. The relationship between berry softening during ripening and the enzyme activities is discussed.
Keywords: table grape, fruit softening, crunchiness, cell wall-modifying enzymes
Cite this article: Pilar Hellín, Scheherazade Fuentes, Ángela Manso, Virginia Hernández, José Fenoll, Pilar Flores. HYDROLYTIC ACTIVITY AND FIRMNESS OF BERRIES FROM SOFT AND FIRM TABLE GRAPE (VITIS VINIFERA) VARIETIES DURING RIPENING. Journal of International Scientific Publications: Agriculture & Food 10, 181-191 (2022). https://www.scientific-publications.net/en/article/1002474/
Download full text

Back to the contents of the volume
By using this site you agree to our Privacy Policy and Terms of Use. We use cookies, including for analytics, personalisation, and ads.