international journal of biological macromolecules, 2023,https:// doi: 10.1016/j.ijbiomac.2023.125132
abstract
soil fumigant has been extensively used for excellent efficacy on soil-borne diseases. however, rapid emission and insufficient effective duration typically limit its application. in this study, hybrid silica/polysaccharide hydrogel was proposed (sil/cu/dmds) by emulsion-gelation method to encapsulate dimethyl disulfide (dmds). the orthogonal study was used to optimize the preparation parameters for lc and ee of sil/cu/dmds, which was 10.39 % and 71.05 %, respectively. compared with silica, the time for 90 % of the total emissions was extended by 4.36 times. the hydrogel possessed a longer persistent duration and the degradation half-life of dmds was 3.47 times greater than that of silica alone. moreover, the electrostatic interaction between abundant groups of polysaccharide hydrogel bestowed dmds with ph-triggered release behavior. additionally, sil/cu/dmds had excellent water holding and water retention capacity. the bioactivity of the hydrogel was 58.1 % higher than that of dmds tc due to the strong synergistic effect between dmds and the carriers (chitosan and cu2 ), and showed obvious biosafety to cucumber seeds. this study seeks to provide a potential approach to develop hybrid polysaccharide hydrogel to control soil fumigants release, reduce emission and enhance bioactivity in plant protection.
international journal of biological macromolecules,if=8.2
