摘要
采用不同浓度的乙醇溶液提取油茶籽壳中的有效成分,通过自由基体系、双氧水体系和亚硝酸盐体系研究油茶籽壳粗提物的抗氧化性能。结果表明,提取物的抗氧化活性与乙醇浓度有关,以60%乙醇提取物的抗氧化活性最强,当浓度为15、2、4、10g/L时,粗提物对·OH、DPPH·、H2O2和亚硝酸盐的清除率最高分别为47.7%、76%、97.1%和99.0%,且粗提物用量与清除能力呈现明显的量效关系。
The effective components from Camellia seed shell was extracted by ethanol solvents with different concentrations.The antioxidant activities of the crude extracts were determined using free radical system,hydrogen dioxide system and nitrite system.The results showed that the antioxidant activities of Camellia seed shell were related to the concentration of ethanol solvents,and the 60 % ethanol extracts had the best free radical-scavenging activity,when the concentrations were 15,2,4,10 g/L,the scavenging rate of 60 % ethanol extracts to·OH、DPPH·、H2O2 and the nitrite were 47.7 %,76 %,97.1 %,99.0 %,and showed the obvious dose-effect relation after a certain concentration.
出处
《食品研究与开发》
CAS
北大核心
2010年第3期73-76,共4页
Food Research and Development
关键词
油茶籽壳
粗提物
抗氧化
自由基
camellia seed shell
crude Extract
antioxidant
free radical
