摘要
目的优选红车轴草提取物中多环芳烃(PAHs)脱除工艺。方法以PAHs脱除率为指标,考察提取物粒度、脱除溶剂、脱除方法对PAHs脱除工艺的影响。结果最佳工艺为:红车轴草提取物超微粉碎至300目以上,用六号溶剂超声提取,对PAHs的脱除率达到98.0%以上,PAHs的残留量为10.0 ng/g以下。结论超微粉碎-六号溶剂-超声提取法脱除红车轴草提取物中PAHs脱除率高,工艺稳定、可行。
Objective To optimize the removal technique for extracting polycyclic aromatic hydrocarbons （PAHs） from Trifolium pratense. Methods The influence of various factors, including the size, solvent, extraction methods, and their effects on the removal efficiency, were investigated. Results The best process for extraction： the ground extract of PAHs was over 300 meshes by ultra-fine grinding firstly and then the removal rate of PAHs was above 98.0% and the total removal of PAHs was below 10.0 ng/ g by ultrasonic extraction with solvent No. 6. Conclusion The removal rate of PAHs in T. pretense extract by ultra-fine grinding-ultrasonic extraction with solvent No. 6 is much higher. The title process is stable and available.
出处
《中草药》
CAS
CSCD
北大核心
2009年第8期1235-1238,共4页
Chinese Traditional and Herbal Drugs
基金
湖南省科技厅重大专项(2007FJ1005)
湖南省科技计划重点项目(2008SK2009)
关键词
红车轴草
多环芳烃
超微粉碎
超声提取
Trifoliurn pratense L.
polycyclic aromatic hydrocarbons
ultramicro-pulverization
ultrasonic extraction
