Effect of harvest time on physico-chemical properties and bioactive compounds of pulp and seeds of grape varieties

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Tarih

2017

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer India

Erişim Hakkı

info:eu-repo/semantics/openAccess

Özet

In this study, physicochemical properties and bioactive compounds of three grape varieties (Cardinal, MuAYkule and Razaki) harvested at the three different harvest times (on time, one and two weeks earlier) were investigated. The highest antioxidant activity, total phenolic and flavonoid contents were observed in Razaki pulp and these were 82.854%, 127.422 mg/100 g, 3.873 mg/g, respectively. The contents of bioactive compounds in grape seeds were found higher than those in pulps. Similarly, seed of Razaki had higher antioxidant activity (91.267%) and total phenolic content (477.500 mg/100 g) when compared to results of other varieties. The key phenolic compounds of all grape variety and seeds were gallic acid, 3,4-dihydroxybenzoic acid, (+)-catechin ve 1,2-dihydroxybenzene. The oil content of grape seeds ranged from 8.50% (Razaki harvested one week ago) to 19.024% (MuAYkule harvested one week ago). The main fatty acids of grapeseed oils were linoleic, oleic and palmitic acids. In addition, the oil of Razaki seeds was rich in tocopherols when compared to the other varieties.

Açıklama

Anahtar Kelimeler

Grape, Bioactive compounds, Antioxidant, Fatty acid composition, Harvest time, Vitis-Vinifera L., Phenolic Composition, Cabernet-Sauvignon, Wine Grapes, Oils

Kaynak

Journal of Food Science and Technology-Mysore

WoS Q Değeri

Q2

Scopus Q Değeri

Q1

Cilt

54

Sayı

8

Künye