期刊论文

中文

林产化学与工业

0253-2417

2008

28

2

82-86

10.3321/j.issn:0253-2417.2008.02.017

本校为第一机构

用二苯基苦基肼自由基（DPPH·）法测定了油茶叶乙醇提取物的抗氧化活性，并与芦丁、二丁基羟基甲苯（BHT）进行了比较，在波长517nm、反应时间40rain的条件下测定了DPPH·的清除率为50％时抗氧化剂的质量浓度（EC50）值。结果表明，油茶叶乙醇提取物对DPPH·具有明显的清除作用，且随着油茶叶乙醇提取物纯化程度的提高，其清除能力也相应增强。测得油茶叶粗提物、油荼叶精提物、芦丁和BHT清除DPPH·的EC50值分别为12．19、6．765、9．481和37．53mg／L，清除DPPH·能力的大小顺序依次为油茶叶精提物〉芦丁〉油茶叶粗提物〉〉BHT。

Antioxidant substances were extracted from Camellia oleifera Abel leaves with ethanol. Their antioxidant activities were determined and compared with rutin and BHT by using 2,2-diphenyl-1-picrylhydrazyl （DPPH） radical scavenging method. ECso values of DPPH radical scavenging were determined under wavelength of 517 nm and reaction time of 40 min. The results showed that ethanol extracts from C. oleifera leaves have significant effect on DPPH radical scavenging and the DPPH radical-scavenging efficiency increases with the purification degree of...