Articles
Towards bioactive compound-rich grape vineyards
Article number
1390_24
Pages
197 – 204
Language
English
Abstract
The phenolic compounds of grapes are mainly found in their skin and seeds while only a low amount is observed in their pulp.
However, teinturier wine grapes, with coloured pulps and potential for intense colour, have high levels of polyphenols not only in their skin and seeds but also in their pulp.
The aim of this work is to study the total phenolic compounds (TPC) and total antioxidant capacity (TAC) of several grape cultivars found in their edible part in order to screen for new cultivars with improved bioactive compounds.
We compared grape samples from three teinturier grapevines, namely Morrastell Bouschet (MB), Petit Bouschet (PB) and Alicante Bouschet (AB) with grape samples coming from a cross between these cultivars and the Itumone and Sugraone table grapes.
Grape samples of Alicante Bouschet × Itumone (PF1008) showed higher values of TPC, with 12.0 g GAE (gallic acid equivalent) kg‑1 dw and TAC from 17.4 to 24.8 g TE (trolox equivalent) kg‑1 dw, which reported to be 41-82% higher in TPC and 38-113% in TAC than the teinturier cultivars.
Such high values of bioactive compounds open new ways to the development of non-alcoholic, vitivinicultural products for human consumption including musts and juices, table grapes and dried grapes.
However, teinturier wine grapes, with coloured pulps and potential for intense colour, have high levels of polyphenols not only in their skin and seeds but also in their pulp.
The aim of this work is to study the total phenolic compounds (TPC) and total antioxidant capacity (TAC) of several grape cultivars found in their edible part in order to screen for new cultivars with improved bioactive compounds.
We compared grape samples from three teinturier grapevines, namely Morrastell Bouschet (MB), Petit Bouschet (PB) and Alicante Bouschet (AB) with grape samples coming from a cross between these cultivars and the Itumone and Sugraone table grapes.
Grape samples of Alicante Bouschet × Itumone (PF1008) showed higher values of TPC, with 12.0 g GAE (gallic acid equivalent) kg‑1 dw and TAC from 17.4 to 24.8 g TE (trolox equivalent) kg‑1 dw, which reported to be 41-82% higher in TPC and 38-113% in TAC than the teinturier cultivars.
Such high values of bioactive compounds open new ways to the development of non-alcoholic, vitivinicultural products for human consumption including musts and juices, table grapes and dried grapes.
Authors
P. Crespo, L. Martínez-Zamora, F. Artés-Hernández, M. Tornel
Keywords
coloured pulp, teinturier grapes, phenolic profile, antioxidant activity, Vitis vinifera L
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