摘要
将甘薯叶中的抗氧化活性物质采用甲醇粗提后,再用不同有机溶剂进行梯度提取,并部分纯化,对不同溶剂提取物和纯化物的抗氧化性进行了研究。结果表明:二氯甲烷、无水乙醇、乙酸乙酯、丙酮提取物及正丁醇的纯化物均具有抗氧化性,0.02%浓度的二氯甲烷、无水乙醇、正丁醇纯化物的抗氧化性优于0.02%BHT。正丁醇纯化物、乙酸乙酯组分B的抗氧化活性物质分别为黄酮和多酚类化合物。
The antioxidant components from sweet potato leaves were extracted with methanol,and then divided into a fewgroups with different organic solvents.The antioxdant activity of components from various extracts and partly purified ingredi-ents was investigated.It was found that the components from methylene chloride、ethanol、ethylacetate、acetone andpurified butanol components all possessed antioxidant activity.The antioxidant activities of components from methylenechloride、ethanol and purified butanol componts respectively were stronger than the antioxidant activity of 0.02%BHT.Thepurified butanol-component and thyl acetate-component B belonged flavonoid and polyphenol respectively.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2003年第10期49-51,共3页
Food Science