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| Tannic Acid Modified Lignin Nanoparticles Stabilized Pickering Emulsions for Enhancing the Foliar Deposition and Agrochemical Utilization |
| Received:August 29, 2024 Revised:September 18, 2024 |
| DOI：10.11981/j.issn.1000-6842.2025.03.188 |
| Key Words:lignin nanoparticle;Pickering emulsion;metolachlor;deposition performance |
| Fund Project:大连市杰出青年科技人才支持计划项目（2023RJ002）；辽宁省教育厅基本科研项目（JYTZD2023025）；国家自然科学基金（22078036，22478048）；广西清洁制浆造纸与污染控制重点实验室基金项目（2023GXZZKF09）；广东省科技厅科技发展计划项目（2021QN02C793）；广东省科学院科技发展计划项目（2022GDASZH-2022010101）。 |
| Author Name | Affiliation | Postcode | | HAN Jiazhi | College of Light Industry and Chemical Engineering， Liaoning Province Key Lab of Paper and Pulp Engineering， Key Lab of High Value Utilization of Botanical Resources of China National Light Industry Council， The Dalian Key Lab of High Value Application and Development of Botanical Resources， Dalian Polytechnic University， Dalian， Liaoning Province， 116034
Key Lab of Agricultural Microbiomics and Precision Application （MARA）， Guangdong Provincial Key Lab of Microbial Culture Collection and Application， Key Lab of Agricultural Microbiome （MARA）， State Key Lab of Applied Microbiology Southern China， Institute of Microbiology， Guangdong Academy of Sciences， Guangzhou， Guangdong Province， 510070 | 510070 | | WANG Lina | College of Light Industry and Chemical Engineering， Liaoning Province Key Lab of Paper and Pulp Engineering， Key Lab of High Value Utilization of Botanical Resources of China National Light Industry Council， The Dalian Key Lab of High Value Application and Development of Botanical Resources， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 | | CHEN Mingjie* | College of Light Industry and Chemical Engineering， Liaoning Province Key Lab of Paper and Pulp Engineering， Key Lab of High Value Utilization of Botanical Resources of China National Light Industry Council， The Dalian Key Lab of High Value Application and Development of Botanical Resources， Dalian Polytechnic University， Dalian， Liaoning Province， 116034
Key Lab of Agricultural Microbiomics and Precision Application （MARA）， Guangdong Provincial Key Lab of Microbial Culture Collection and Application， Key Lab of Agricultural Microbiome （MARA）， State Key Lab of Applied Microbiology Southern China， Institute of Microbiology， Guangdong Academy of Sciences， Guangzhou， Guangdong Province， 510070 | 510070 | | GUO Yanzhu* | College of Light Industry and Chemical Engineering， Liaoning Province Key Lab of Paper and Pulp Engineering， Key Lab of High Value Utilization of Botanical Resources of China National Light Industry Council， The Dalian Key Lab of High Value Application and Development of Botanical Resources， Dalian Polytechnic University， Dalian， Liaoning Province， 116034 | 116034 |
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| Abstract: |
| Increasing the deposition and adhesion rate of pesticide droplets on leaves is an important means to improve the utilization efficiency of pesticides and meet the challenges of pesticide application. In this study， sulfate lignin was used as raw material to modify the structure of lignin by tannic acid. Tannic acid modified lignin nanoparticles （TA-LNPs） were obtained by anti-solvent method and used to stabilize the Pickering emulsion loaded with metolachlor. A simple and efficient agricultural chemical delivery system was constructed. The deposition performance of lignin-based Pickering emulsions （TA-PEs） on the leaf surface and the sustained release behavior and UV degradation behavior of metolachlor in the emulsion were investigated. The contact angle between TA-PEs and the leaf surface was 37.92°， showing good leaf wetting ability. After coating with TA-PEs， the deposition of metolachlor on the leaf surface could reach 81.53%. At the same time， TA-PEs also showed UV protection effect on metolachlor. After 24 h of UV irradiation， the retention rate of metolachlor was 77.46%. The leaf wettability of TA-PEs， the leaf deposition performance and the UV light stability of herbicides were better than those of commercial sodium dodecyl benzene sulfonate stabilized metolachlor emulsion. |
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