Fabrication of ultrafine sporopollenin particles and its application as pesticide carrier

文献类型： 外文期刊

第一作者： Fan, Teng-Fei

作者： Fan, Teng-Fei;Xiang, Sheng;Li, Lei;Xie, Xue-Wen;Chai, A-Li;Shi, Yan-Xia;Liu, Na;Abdukerim, Rizwangul;Ma, Jia-Yi;Shi, Jia;Luan, Yu-Yang;Hou, Cheng-Dong;Li, Bao-Ju

作者机构：

关键词： Pollen; Sporopollenin; Pesticide carrier; Copper; Control release formulation

期刊名称：APPLIED MATERIALS TODAY （ 影响因子：8.663； 五年影响因子：9.551 ）

ISSN： 2352-9407

年卷期： 2022 年 27 卷

页码：

收录情况： SCI

摘要： Control release formulation is of great interest to pesticide researchers due to its programmable release of active ingredients with low environmental risk. The carrier is a dominant factor affecting the performance of the preparation. In this work, a copper-based fungicide is developed using plant sporopollenin materials as a control release carrier. Although sporopollenin is regarded as the toughest natural material, sporopollenin was broken down into nano- and micro-particles along with the modified surface chemistry by a facile oxidation treatment. The surface chemistry of sporopollenin is characterized by Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectrometry (XPS) and Boehm titration. The resulting ultrafine sporopollenin particles (USPs) show a high copper(II) loading capacity of 435 mg/g, owing to the electrostatic effect. Furthermore, copper(II) can be released from copper(II)-sporopollenin complex (Cu-USPs) in a pH-dependent manner. As a proof of concept, Cu-USPs show very promising activity against a plant-specific pathogen-Pectobacterium carotovorum. Overall, this paper shed light on developing sporopollenin-derived functional materials for pesticide delivery. (C) 2022 Elsevier Ltd. All rights reserved.

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