摘要
用70%乙醇提取元宝枫叶中的抗氧化物,用微生物纸片法及其分光光度法测其抗氧化活性,并研究了在不同条件下提取物的稳定性.结果表明,元宝枫叶提取物中的总黄酮部分具有较强的自由基清除能力,且耐热、耐光性好,在酸性介质及氯化钠溶液中可稳定存在.
Antioxidative substances of Acer truncatum leave were extracted with 70% ethanol.Their antioxidative activities were essayed by microbiological paper method and DPPH method.The effects of light,heat,pH and sodium chloride on the stabilities of these antioxidative substances were also studied.It was found that the total flavonoid of the extracts of Acer truncatum leave showed strong scavenging effects on DPPH radical and the 1O2 produced from microbiological paper system.The extracts were resistant to heat and light and the solution of could exist stably in acidic medium and sodium chloride.
出处
《云南大学学报（自然科学版）》
CAS
CSCD
2003年第5期442-445,448,共5页
Journal of Yunnan University(Natural Sciences Edition)
基金
云南省自然科学基金资助项目(2000B006M).
