微波协助萃取技术应用于提取天然除虫菊素的工艺研究

Reasearch on the Use of Microwave-aid Technique for the Extraction of Pyrethrins

根据天然除虫菊花的生物化学特性,应用微波协助萃取技术来萃取天然植物除虫菊花中的菊素,在遵循不破坏除虫菊素中杀虫活性的前提下,选择适当的微波波长、萃取溶剂、溶剂用量、溶剂的pH值、微波计量、物料水分、温度、时间等因素控制得当,萃取效果十分明显;实践表明:采用此工艺,具有快速安全、简化工艺、节省能源、降低溶剂用量、降低成本、改善环境条件、提高产品纯度、减少装备投资等特点。

Application of microwave aid technique in the extraction of pyrethrins from the natural pyrethrum flower s was studied.The extraction effect was distinc t with the suitable selected fac - tores,such as microwavelength,extraction solvent,solvent dosage,pH value,microwave compu - tation,moiosture of materials,temperature,reaction time etc.The extraction proc e dure using this technique was quick and safe,simple and economic,and the impurities in the product was also dicreased.