Ni Hong, Ma An-Ning, Zhang Yun, Geng Peng
School of Life Science, Hubei University, Wuhan, China.
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi. 2009 Aug;27(4):377-8, following 378.
The active components from Centipeda minima were extracted by water or ethanol, and identified by FTIR spectroscopy and UV-visible spectrophotometer. The molluscicidal effect of aqueous extract and ethanol extract from Centipeda minima against Oncomelania hupensis was determined as referring to the WHO guidelines for laboratory molluscicidal test. Treated with over 2.0 g/L aqueous extract and ethanol extract for five days, the mortality of O. hupensis was up to 100%, and their LC50, for snails was 0.50 g/L and 0.62 g/L, respectively. The molluscicidal activity of aqueous extract was higher than that of ethanol extract. The main components of aqueous extract and ethanol extract were sesquiterpenes lactones and sterols.
采用水或乙醇提取小蓟的活性成分，并通过傅里叶变换红外光谱仪和紫外可见分光光度计进行鉴定。参照世界卫生组织实验室杀螺试验指南，测定小蓟水提取物和乙醇提取物对钉螺的杀螺效果。用超过2.0 g/L的水提取物和乙醇提取物处理5天后，钉螺的死亡率高达100%，其对钉螺的半数致死浓度（LC50）分别为0.50 g/L和0.62 g/L。水提取物的杀螺活性高于乙醇提取物。水提取物和乙醇提取物的主要成分是倍半萜内酯和甾醇。
