Thermo-Responsive Behavior of Enzymatic Hydrolysis Lignin in the Ethanol/Water Mixed Solvent and Its Application in the Controlled Release of Pesticides,ACS Sustainable Chemistry & Engineering

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Thermo-Responsive Behavior of Enzymatic Hydrolysis Lignin in the Ethanol/Water Mixed Solvent and Its Application in the Controlled Release of Pesticides
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2021-11-09 , DOI: 10.1021/acssuschemeng.1c06061
Yongan Lin ₁ , Yuxia Pang ₁ , Zhiping Li ₁ , Mingsong Zhou ₁ , Hongming Lou _{1,

2} , Xueqing Qiu ₃

Affiliation

Enzymatic hydrolysis lignin (EHL) has special solubility in the ethanol/water mixed solvent. In this paper, it is found that the temperature affects the intramolecular and intermolecular forces of lignin as well as the interaction between lignin and solvent molecules, which makes them have an upper critical solution temperature behavior in ethanol/water. Furthermore, avermectin-loaded EHL microspheres (AVM@EHL MPs) with an average particle size of 800 nm and uniform distribution were prepared through the anti-solvent method. The simulated pesticide release experiment of AVM@EHL MPs in ethanol/water showed that the drug release amount was only 20% at 25 °C for 24 h, while at 50 °C, the drug release amount of 24 h was as high as 90%, indicating that the release of drug-loaded microspheres in ethanol/water was temperature-responsive.

中文翻译：

乙醇/水混合溶剂中酶水解木质素的热响应行为及其在农药控释中的应用

酶解木质素（EHL）在乙醇/水混合溶剂中具有特殊的溶解性。本文发现温度影响木质素的分子内和分子间作用力以及木质素与溶剂分子之间的相互作用，使其在乙醇/水中具有上临界溶解温度行为。此外，通过反溶剂法制备了平均粒径为 800 nm 且分布均匀的阿维菌素负载 EHL 微球（AVM@EHL MPs）。AVM@EHL MPs在乙醇/水中的模拟农药释放实验表明，25℃下24h的药物释放量仅为20%，而50℃下24h的药物释放量高达90%。 %，表明载药微球在乙醇/水中的释放是温度响应的。

更新日期：2021-11-22

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