Characterization of Acid-Responsive-Release Matrine/ZIF-8@Sodium Alginate Microcapsules Prepared by Electrostatic Spray and Their Application in the Control of Soybean Cyst Nematode

被引:0
|
作者
Liu, Longyu [1 ]
Liu, Xueqiu [1 ]
Lu, Xinyi [1 ]
Guo, Xinmiao [1 ]
Chen, Xi [1 ]
Li, Weiping [2 ]
Yu, Xiaobin [1 ]
Cheng, Zhiqiang [3 ]
机构
[1] Jilin Agr Univ, Coll Plant Protect, Changchun 130000, Peoples R China
[2] Jilin Agr Univ, Coll Informat Technol, Changchun 130000, Peoples R China
[3] Jilin Agr Univ, Coll Resources & Environm, Changchun 130000, Peoples R China
关键词
COMPOSITE MICROSPHERES; DELIVERY; ANTIBACTERIAL; ENCAPSULATION;
D O I
10.1021/acs.langmuir.4c02375
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Matrine (MT) is a kind of alkaloid extracted from Sophora and is a promising substitute for chemical nematicides and botanical pesticides. The present study utilized sodium alginate (SA), zeolite imidazole salt skeleton (ZIF), and MT as raw materials to prepare a pH-response-release nematicide through the electrostatic spray technique. Zinc metal-organic framework (ZIF-8) was initially synthesized, followed by the successful loading of MT. Subsequently, the electrostatic spray process was employed to encapsulate it in SA, resulting in the formation of MT/ZIF-8@SA microcapsules. The efficiency of encapsulation and drug loadings can reach 79.93 and 26.83%, respectively. Soybean cyst nematode (SCN) is one of the important pests that harm crops; acetic acid produced by plant roots and CO2 produced by root respiration causing a decrease in the pH of the surrounding environment, which is most attractive to the SCN when the pH is between 4.5 and 5.4. MT/ZIF-8@SA releases the loaded MT in response to acetic acid produced by roots and acidic oxides produced by root respiration. The rate of release was 37.67% higher at pH 5.25 compared with pH 8.60. The control efficiency can reach 89.08% under greenhouse conditions. The above results demonstrate that the prepared MT/ZIF-8@SA not only exhibited excellent efficacy but also demonstrated a pH-responsive release of the nematicide.
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页码:19689 / 19700
页数:12
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