Controlled release of dinotefuran with temperature/pH-responsive chitosan-gelatin microspheres to reduce leaching risk during application

文献类型： 外文期刊

第一作者： Zhang, Qizhen

作者： Zhang, Qizhen;Du, Yu;Yu, Manli;Ren, Lirui;Guo, Yongfei;Li, Qinghua;Yin, Mingming;Li, Xiaolong;Chen, Fuliang

作者机构：

关键词： Chitosan; Gelatin; Dinotefuran; Microsphere; Pesticide; Trialeurodes vaporariorum

期刊名称：CARBOHYDRATE POLYMERS （ 影响因子：10.723； 五年影响因子：9.964 ）

ISSN： 0144-8617

年卷期： 2022 年 277 卷

页码：

收录情况： SCI

摘要： Neonicotinoid-based pesticides are extensively used owing to their broad insecticidal spectrum and activity. We developed neonicotinoid dinotefuran (DIN)-loaded chitosan-gelatin microspheres using a spray-drying technology, resulting in a pH- and temperature-responsive controlled-release system. Upon introducing chitosan into the triple-helix structure of gelatin, the physically modified gelatin microspheres became smooth, round, and solid, improving their thermal storage stability. The spray-drying parameters were optimized using three-dimensional surface plots. When scaled up under optimal conditions, the corresponding loading content and encapsulation efficiency were 21.5% and 98.17%, respectively. Compared with commercial dinotefuran granules, our biodegradable composite carriers achieved the immobilization of dinotefuran to reduce pesticide leaching by 5.57-19.89% in soil, improved the soil half-life of DIN, and improved its cumulative absorption by plants. Therefore, the microspheres showed better efficacy against Trialeurodes vaporariorum. Our results confirm that this simple approach can improve the utilization efficiency of neonicotinoids, decrease leaching loss, and promote ecological safety.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序