Homogenate extraction technology of camptothecine and hydroxycamptothecin from Camptotheca acuminata leaves
Camptothecine (CPT) and hydroxycamptothecin (HCPT), two kinds of anti-cancer alkaloids, were extracted from Camptotheca acuminata leaves using homogenate extraction technology under different conditions such as the ratio of material to liquid, ethanol concentration, and homogenate time. The optimum technology parameters for homogenate extraction of CPT and HCPT from C. acuminata leaves were determined as homogenate time at 8 min, ethanol concentration at 55% and the ratio of material to liquid at 1:15 (g:mL). By using the optimized parameters, we obtained 0.639‰ extraction rate for CPT and 0.437‰ for HCPT. The extraction yields of CPT and HCPT extracted by homogenating technology were higher than those by other extractive methods, such as ultrasonic, reflux, shaking in water bath. It is concluded that the homogenate extraction technology was an efficient method for extracting CPT and HCPT from C. acuminata leaves, with characteristics of less extraction time and high yield.
作 者： SHI Wei-guo ZU Yuan-gang ZHAO Chun-jian YANG Lei 作者单位： Key Laboratory of Forest Plant Ecology of Ministry of Education, Northeast Forestry University, Harbin 150040, P.R. China 刊 名： 林业研究（英文版） 英文刊名： JOURNAL OF FORESTRY RESEARCH 年，卷(期)： 2009 20(2) 分类号： S7 关键词： homogenate Camptotheca acuminata leaves camptothecine hydroxycamptothecin