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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Electrospun Polymer Nanofibers as Seed Coatings for Crop Protection
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Electrospun Polymer Nanofibers as Seed Coatings for Crop Protection

机译：电纺聚合物纳米纤维作为作物保护的种子涂料

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摘要

Ineffective delivery of pesticides leads to multiple application cycles of active ingredients (AIs), resulting in increased cost while endangering the environment via soil, water, and air contamination. Herein, we present a facile approach for localized delivery of pesticides by coating seeds with electrospun cellulose diacetate (CDA) nanofibers containing abamectin or fluopyram as model AIs. CDA is used as the polymer of choice because of its good electrospinnability, low water solubility, and eventual biodegradability. Nanofibrous coatings are directly electrospun onto soybean seeds and show no deleterious effects on seed germination regardless of coating thickness and uniformity. Water dissolution studies show that nanofibers maintain their integrity for over 2 weeks, a necessary characteristic to make this approach effective. AI release studies display a slow and sustained release of both abamectin and fluopyram from the nanofibers, with abamectin exhibiting a slower release because of its more hydrophobic nature and possibly stronger interaction with CDA. Functional performance, tested using fluopyram-loaded nanofibers in an in vitro fungal assay against the plant pathogen Alternaria lineariae, consistently inhibits fungal growth. The sustained release profile taken together with moisture stability suggests that nanofibrous seed coatings have a strong potential as an alternative platform to control plant pathogens such as nematodes and fungi.
机译：杀虫剂的无效递送导致多种施用活性成分（AIS）的循环，导致通过土壤，水和空气污染危及环境的成本增加。这里，我们提出了一种通过涂覆含有含有Abamectin或Fluopyram的Electhum纤维素二乙酸盐（CDA）纳米纤维作为模型AIS来涂覆种子的涂覆农药局部递送农药的容易方法。 CDA用作选择的聚合物，因为其良好的电冬型能力，低水溶性和最终的生物降解性。纳米纤维涂层直接静电到大豆种子上，无论涂层厚度和均匀性如何，对种子萌发没有有害影响。水溶解研究表明，纳米纤维保持其完整性超过2周，使得这种方法有效的必要特征。 AI释放研究显示来自纳米纤维的Abamectin和Fluopyram的缓慢且持续释放，并且由于其更疏水性，并且可能更强烈地与CDA相互作用而表现出较慢的释放。功能性能，在体外真菌测定中使用氟翅流量纳米纤维进行测试，用于针对植物病原体alercariaeee，始终如一地抑制真菌生长。与水分稳定性一起持续的释放曲线表明，纳米纤维种子涂料具有强大的潜力作为控制植物病原体如线虫和真菌的替代平台。

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    Barbara V. Farias; Tahira Pirzada; Reny Mathew;

  • 作者单位

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Engineering Building 1 Box 7905 Raleigh North Carolina 27695-7905 United States;

    Department of Chemical and Biomolecular Engineering North Carolina State University 911 Partners Way Engineering Building 1 Box 7905 Raleigh North Carolina 27695-7905 United States;

    Department of Entomology and Plant Pathology North Carolina State University 840 Method Road Unit 4 Box 7903 Raleigh North Carolina 27695-7903 United States;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    electrospinning; seed coating; cellulose; fluopyram; abamectin; controlled release;

    机译：静电纺丝;种子涂层;纤维素;麦芽糖;Abamectin;控释;

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