期刊
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
卷 54, 期 8, 页码 2230-2240出版社
SPRINGER INDIA
DOI: 10.1007/s13197-017-2658-9
关键词
Grape; Bioactive compounds; Antioxidant; Fatty acid composition; Harvest time
资金
- International Scientific Partnership Program ISPP at King Saud University through ISPP [0015]
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.
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