title: Preparation and characterization of novel functionalized prochloraz microcapsules using silica-alginate-elements as controlled release carrier materials.
abstract: Controlled release formulation of pesticides is an effective approach to achieve the desirable purpose of increasing the utilization of pesticides and reducing the environmental residuals. In this work, a novel functionalized microcapsule using silica cross-linked with alginate, and some beneficial elements to crops, was prepared. The microcapsules were structurally characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and X-ray photoelectron spectroscopy. The results showed that the microcapsules had a high loading efficiency of prochloraz (about 30% w/w) and could effectively protect prochloraz against degradation under UV irradiation and alkaline conditions, showed sustainable release for at least 60 days, and also likely increased disease resistance due to the element on the surface. Given the advantages of the microcapsules, this delivery system may be extended to other photosensitive or pH-sensitive pesticides in the future.
authors: College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, People's Republic of China.
authors: Wenbing
authors: W
authors: Zhang
authors: Shun
authors: S
authors: He
authors: Yao
authors: Y
authors: Liu
authors: Qianqian
authors: Q
authors: Geng
authors: Guanglong
authors: G
authors: Ding
authors: Mingcheng
authors: M
authors: Guo
authors: Yufang
authors: Y
authors: Deng
authors: Juanli
authors: J
authors: Zhu
authors: Jianqiang
authors: J
authors: Li
authors: Yongsong
authors: Y
authors: Cao
mesh_terms: D000464:Alginates / Q000737:chemistry*; D002214:Capsules; D003692:Delayed-Action Preparations / Q000737:chemistry; D004337:Drug Carriers / Q000737:chemistry*; D005659:Fungicides, Industrial / Q000737:chemistry*; D020723:Glucuronic Acid / Q000737:chemistry; D006603:Hexuronic Acids / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D000464:Alginates; D002214:Capsules; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D005659:Fungicides, Industrial; D006603:Hexuronic Acids; D007093:Imidazoles; D012822:Silicon Dioxide; D020723:Glucuronic Acid; C045362:prochloraz