南方农业学报2012，Vol.43Issue(11)：1749-1753,5.DOI:10.3969/j:issn.2095-1191.2012.11.1749
小飞蓬多酚提取及其抗氧化性研究
Conyza canadensis L.Cronq.polyphenol extraction and its antioxidation activities
摘要
Abstract
This research determined the effects of Conyza canadensis polyphenol extraction process on the scavenging of hydroxyl radical (-OH) in order to improve the development of Conyza canadensis medical resources. [ Method ]The Conyza canadensis polyphenol extracted through the ethanol extraction method was tested under the single factor test and the orthogonal test to optimize the following extraction process parameters: ethanol concentration, extraction temperature, extraction time duration, and solid-to-solution ratio. These parameters were then analyzed to explore the effects of Conyza canadensis polyphenol extraction on -OH removal. [Result]The effect order of the Conyza canadensis polyphenol extraction factors were arranged as follows: ethanol concentration>solid-to-solution ratio>extraction time dura-tion>extraction temperature. The optimum extraction process parameters were 50% ethanol concentration, 70℃ extraction temperature, 60 min extraction duration, and 1:20 solid-to-solution ratio. When the Conyza canadensis polyphenol concentration reached 0.3 mg/mL, the -OH removal rate could increase up to 35%. [Conclusion]Under the optimum extracting conditions, the Conyza canadensis polyphenol extraction rate could reach 12.751 mg/g; also, under this extraction rate, the removal effects of Conyza canadensis polyphenol on -OH was excellent. Conyza canadensis L. Cronq.; polyphenol; extraction process; hydroxyl radical ("OH); oxidation re关键词
小飞蓬/多酚/提取工艺/羟基自由基/抗氧化性Key words
Conyza canadensis L. Cronq./ polyphenol/ extraction process/ hydroxyl radical ("OH)/ oxidation resistance分类
医药卫生引用本文复制引用
贤景春,赖金辉,刘玉明..小飞蓬多酚提取及其抗氧化性研究[J].南方农业学报,2012,43(11):1749-1753,5.基金项目
泉州市科技支撑计划项目(2007N4) （2007N4）
