对夜来香生物活性的研究

[目的]为研制和开发夜来香源绿色农药、夜来香多功能产品提供依据。[方法]采用超声波提取获得夜来香乙醇提取液,研究提取液对果蝇的熏蒸作用、驱避作用和触杀作用。[结果]果蝇在夜来香乙醇提取液和夜来香稀溶液中经过1 h的熏蒸,全部死去,说明夜来香乙醇提取液和夜来香稀溶液对果蝇有较好的驱避作用,30 min内驱避效果达100%。夜来香稀溶液和夜来香乙醇提取液对果蝇的触杀作用都很弱,触杀效果仅为10%。在受到夜来香乙醇提取液和夜来香稀溶液的熏蒸时,果蝇有局促不安的症状,并渐渐失去活力直至死亡,30 min内熏蒸效果达100%。[结论]夜来香对果蝇有较好的熏蒸作用和驱避作用,但触杀作用较弱。

Study on Biological Activity of Cestrum nocturnum Linn

[Objective] The study was to provide the basis for the development and exploitation of the green pesticides of Cestrum nocturnum Linn source and the multi-functional products of C.nocturnum.[Method] The ethanol-extracts of C.nocturnum.was obtained with ultrasonic wave extraction,and the effects of fumigation,repellent and contact toxicity of the extracts on drosophila were studied.[Result] After the drosophilas were fumigated by ethanol-extracts and dilute solution of C.nocturnum for 1 h,they were all dead,which indicated that the ethanol-extracts and dilute solution of C.nocturnum had better repellent effects on drosophila and the repellent effects reached 100% in 30 min.The contact action of dilute solution and ethanol-extracts of C.nocturnum on drosophila were all weak and the contact action only was 10%.When drosophilas were fumigated by ethanol-extracts and dilute solution of C.nocturnum,they had embarrassed.symptom and then gradually lost activity until died,and the fumigation effect reached 100% in 30 min.[Conclusion] The C.nocturnum had better fumigation and repellent effects on drosophila,but its contact action on drosophila was weak.