Synthesis, characterization of chitosan/tripolyphosphate nanoparticles loaded with 4-chloro-2-methylphenoxyacetate sodium salt and its herbicidal activity against Bidens pilosa L.
文献类型： 外文期刊
作者： Jiang, Tianying 1 ; Wang, Yanhui 2 ; Yu, Zhiyu 1 ; Du, Liangwei 1 ;
作者机构： 1.Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Electrochem Energy Mat, Nanning 530004, Peoples R China
2.Guangxi Acad Agr Sci, Plant Protect Res Inst, Guangxi Key Lab Biol Crop Dis & Insect Pests, Nanning 530007, Peoples R China
期刊名称：SCIENTIFIC REPORTS （ 影响因子：3.9； 五年影响因子：4.3 ）
ISSN： 2045-2322
年卷期： 2024 年 14 卷 1 期
页码：
收录情况： SCI
摘要： Herbicides are widely used to control weeds in agriculture filed, however, the excessive use of the conventional formulation causes harmful side effects on the environment. To relieve this problem, natural polymer nanoparticles as herbicide carrier were rapidly developed and applied in recent years. In the present study, chitosan/tripolyphosphate (CS/TPP) nanoparticles were synthesized as nanocarrier to load herbicide 4-chloro-2-methylphenoxyacetate sodium salt (MCPA-Na). The encapsulation efficiency (EE) of 51.32% was obtained through measuring indirectly by high performance liquid chromatography (HPLC). The free and MCPA-Na-loaded CS/TPP nanoparticles were characterized by using dynamic light scattering (DLS), zeta potential, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The encapsulation of MCPA-Na in CS/TPP nanoparticles resulted in the change of MCPA-Na release profile in different pH media and displayed effective sustained-release under neutral condition. The evaluation of herbicidal activity against Bidens pilosa L. showed that the efficacy enhancement of MCPA-Na was realized after encapsulation in CS/TPP nanoparticles. The proposed herbicide nanoformulation presented a good potential as a sustainable alternative for weed control in agriculture.
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