Biodegradable polymers, when reinforced with nanostructures, are considered good sustainable coatings and viable alternatives to replace conventional coatings. In addition, biopesticides are also considered safe, biodegradable and environmentally friendly; therefore there is a growing interest in nanoemulsions based on phytochemical mixtures. In this context, the aim of this study is to aggregate Neem oil nanoemulsions and pectin matrices to produce nanocomposite films, as well as evaluate the nanoemulsions effect on the film properties for coating soybean seeds. Nanoemulsions were characterized assessing their average diameter and stability, while the nanocomposite antifungal, morphology, mechanical and barrier properties were analyzed. In general, the nanoemulsions had an average diameter close to 59 ± 0.61 nm, showed good stability and its addition improved film mechanical properties: reduced stiffness, resistance, and water vapor permeability, and increased extensibility. In addition, Neem oil provided antifungal properties against Aspergillus Flavus and Penicillium Citrinum. The seed coatings promoted a positive effect on the germination process of soybean seeds. Thus, antifungal nanocomposite films from renewable sources were successfully produced. The fungicidal inhibition of Neem oil as a nanoemulsion makes these new materials promising for the production of seed coatings.

中文翻译：

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果胶纳米复合材料/印em油纳米乳液用于种子包衣的物理力学和抗真菌性能

当用纳米结构增强时，可生物降解的聚合物被认为是良好的可持续性涂料，并且是替代常规涂料的可行替代品。此外，生物农药也被认为是安全的，可生物降解的和环境友好的；因此，对基于植物化学混合物的纳米乳液的兴趣日益增长。在这种情况下，本研究的目的是聚集印em油纳米乳剂和果胶基质以生产纳米复合膜，并评估纳米乳剂对包衣大豆种子的膜性能的影响。通过评估纳米乳液的平均直径和稳定性来表征纳米乳液，同时分析了纳米复合材料的抗真菌性，形态，机械性能和阻隔性能。通常，纳米乳液的平均直径接近59±0.61 nm，它显示出良好的稳定性，并且还改善了薄膜的机械性能：降低了刚度，抵抗力和水蒸气渗透性，并增加了延展性。此外，印em油还具有抗真菌作用黄曲霉和柠檬青霉。种衣剂对大豆种子的发芽过程具有积极作用。因此，成功地生产了可再生来源的抗真菌纳米复合薄膜。印Ne油作为纳米乳剂的杀菌作用使这些新材料有望用于种衣。