The nutraceutical properties and antioxidant capacity analysis of Summer Black skins from the main four producing areas in Yunnan
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摘要: 以云南4个葡萄主产区的夏黑果皮为原料,对其营养成分及抗氧化活性进行了分析。以DPPH、ABTS+自由基清除能力和还原能力评价了四个地区果皮多酚提取物的抗氧化活性。结果发现:同一品种的四个样品,因其生长环境不同,营养成分及组成存在明显差异。葡萄皮中脂质的不饱和脂肪酸含量较高,单糖含量为葡萄糖>阿拉伯糖、半乳糖醛酸、半乳糖。葡萄皮中的原花青素、多酚含量存在显著性差异,酚酸组成中芦丁和儿茶素含量较高。果皮多酚提取物表现较好的抗氧化活性,其在三种抗氧化体系中的IC50值分别在13.3414.86μg/m L、9.1510.64μg/m L和32.6334.24μg/m L之间。Abstract: The skins of Summer Black from the main four producing grapes areas in Yunnan was used as the material,its nutraceutical properties and antioxidant activity were analyzed. The antioxidant activity of grape skin extracts were evaluated by DPPH,ABTS+ radical scavenging capacity and reducing power(FRAP). The basic ingredients and composition of the same species were variable,due to the impact of the environmental differences. Main lipids in the skin were unsaturated fatty acids,the main monosaccharide contents of descending order were glucose>arabinose,galacturonic acid,galactose. Proanthocyanidins and polyphenol content in grape skins were significant differences,rutin and catechin were main components of phenolics in grape skins. The peel polyphenols had high antioxidant activity with IC50 values were 13.34~14.86 μg/m L for DPPH,9.15~10.64 μg/m L for ABTS+and 32.63~34.24 μg/m L for FRAP.
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Keywords:
- grape skin /
- components /
- antioxidant activity
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