以β-环糊精制备除虫菊酯微胶囊及应用
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

S482.1; X384

基金项目:

基金名(课题编号)(有基金资助课题析出的论文应列出,基金名不是课题名称)


Preparation of Pyrethrins Microcapsule by β-cyclodextrin and Application
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    采用微胶囊技术将天然除虫菊酯包埋在β环糊精的中空疏水区以解决其在自然条件下不稳定的问题.制备的微胶囊包埋率为92.15%,载药率为8.5%,粒径范围为1~17 μm.结果表明微胶囊相对原药具有较好的热稳定性和缓释性能,且缓释行为符合一级动力学模型.微胶囊在4℃冰箱中储存稳定性良好,5个月后载药率下降率在20%以内.自然条件下,微胶囊相比原药制剂可以延长1~1.5倍的作用时间.制备的微胶囊对淡色库蚊、白纹伊蚊以及二化螟、蚜虫和粘虫具有较高的灭蚊灭虫活性,可在防治害虫时单独使用.

    Abstract:

    Natural pyrethrins was encapsulated in hollow hydrophobic part of β-cyclodextrin to protect it against natural degradation. The encapsulation efficiency and drug content of the pyrethrins microcapsule prepared were 92.15% and 8.5%, respectively, and the particle size ranged from 1 to 17 μm. It was demonstrated that the pyrethrins microcapsule had better thermal stability and slow-release capability than liquid pyrethrins. Its slow-release kinetics could be described as the first-order model. The storage stability of pyrethrins was improved after encapsulation. Results showed that the drug content decreased within 20% after 5 months at 4℃. Under natural conditions, microcapsules could also prolong the storage duration of pyrethrins by 1~1.5 times. The pyrethrins microcapsule in this study had high insecticidal activity against Culex pipiens pallens, Aedes albopictus, Chilo suppressalis, aphids and Myxodes armyworm, indicating that it was a promising pesticide for the control of pests.

    参考文献
    相似文献
    引证文献
引用本文

徐冉,黄虹,袁建梅,刘海容,李风亭.以β-环糊精制备除虫菊酯微胶囊及应用[J].同济大学学报(自然科学版),2019,47(12):1772~1778

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-06-13
  • 最后修改日期:2019-10-15
  • 录用日期:2019-09-16
  • 在线发布日期: 2020-01-02
  • 出版日期: