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乙醇萃取紫肉甘薯、紅肉甘薯及黃肉甘薯的抗氧化能力比較

In Vitro Antioxidant Capacity of Ethanol Extracts of Purple, Red and Yellow Sweet Potato

摘要


以乙醇萃取紫肉甘薯、紅肉甘薯及黃肉甘薯,比較體外抗氧化能力。結果顯示,紫肉甘薯的總多酚、還原力、清除DPPH自由基及超氧歧化酶的活性都優於黃肉甘薯及紅肉甘薯,且黃肉甘薯的抗氧化能力為最低。紫肉甘薯含有高量多酚類,是造成紫肉甘薯的抗氧化活性高於黃肉甘薯及紅肉甘薯的主要原因。

關鍵字

甘薯 抗氧化

並列摘要


Purple, red and yellow flesh sweet potatoes were evaluated to compare their in vitro antioxidant capacity. The results show that the total polyphenols, reducing power, scavenging DPPH radical activity and superoxide dismutase activity of purple flesh sweet potato is far superior to red and yellow flesh sweet potatoes. Purple flesh sweet potato is abundant of polyphenol, and showed the higher antioxidant activity than red and yellow flesh sweet potatoes.

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