Abstract In this article, we examined a new environmentally friendly process of introducing a hardly soluble active additive into chitosan edible films using the example of rutin, which has antioxidant and nutraceutical effects. The process is based on the formation of submicron particles of rutin in the chitosan matrix, during the short-term (10 s) mechanical activation of mixed aqueous solutions in a metastable state using a rotor-stator device. It is shown that mechanical activation accelerates the nucleation of rutin and prevents aggregation of the resulting particles due to embedding them in the polymer structure. Chitosan samples differing in molecular weight and deacetylation degree were used to form the films. It was found that the rutin particles size decreases with an increase in its concentration in supersaturated solutions, as well as with an increase in the chitosan solution viscosity. Rutin particles had a needle-like shape with a diameter of 0.40–0.75 μm and showed a reinforcing effect, increasing the tensile strength of chitosan films by 25–40%. Chitosan films containing rutin were smooth, uniformly yellow colored, and had lower water vapor permeability compared to films made of chitosan alone.

中文翻译：

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原位机械活化沉淀法制备的含芦丁壳聚糖薄膜

摘要 在本文中，我们以具有抗氧化和营养作用的芦丁为例，研究了一种将难溶性活性添加剂引入壳聚糖可食用薄膜的新型环保工艺。该过程基于在使用转子-定子装置对处于亚稳态的混合水溶液进行短期（10 秒）机械活化期间，在壳聚糖基质中形成亚微米芦丁颗粒。结果表明，机械活化加速了芦丁的成核，并防止了由于将它们嵌入聚合物结构中而导致的颗粒聚集。使用不同分子量和脱乙酰度的壳聚糖样品形成薄膜。发现芦丁粒径随着其在过饱和溶液中浓度的增加而减小，以及壳聚糖溶液粘度的增加。芦丁颗粒呈针状，直径为 0.40-0.75 μm，具有增强作用，使壳聚糖薄膜的拉伸强度提高 25-40%。与单独由壳聚糖制成的薄膜相比，含有芦丁的壳聚糖薄膜光滑、呈均匀的黄色，并且具有较低的水蒸气渗透性。