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首页> 外文期刊>Journal of Biotechnology >Oxygen-scavenging coatings and films based on lignosulfonates and laccase.
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Oxygen-scavenging coatings and films based on lignosulfonates and laccase.

机译：基于木质素磺酸盐和漆酶的除氧涂料和薄膜。

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Laccase and lignosulfonates were included in coating colors and embedded in latex-based or starch-based films and coatings on foil or board. After 6 days at 23 degrees C and 100% relative humidity, the oxygen content in airtight chambers decreased from 1.0% (synthetic gas consisting of 99% N2 and 1% O2) to 0.3% in the presence of board coated with lignosulfonate and laccase, while the oxygen content remained unchanged in control experiments without enzyme. The water stability of lignosulfonate-containing latex-based coatings and starch-based films was improved after laccase-catalyzed oxidation of lignosulfonates, which indicates polymerization to products with lower solubility in water. Furthermore, the E' modulus of starch-based films increased with 30%, which indicates laccase-catalyzed polymerization of lignosulfonates resulting in increased stiffness of the film. The results suggest that laccases and lignosulfonates can be used as an oxygen-scavenging system in active packaging and that enzyme-catalyzed polymerization of lignosulfonates contributes to improved water stability and mechanical properties
机译：漆酶和木质素磺酸盐包括在涂料颜色中，并嵌入在基于乳胶或淀粉的薄膜和箔或板上的涂料中。在23摄氏度和100％相对湿度下放置6天后，密闭室中的氧气含量从1.0％下降（合成气由99％N 2 和1％O 2 0.3％，而在没有酶的对照实验中，氧含量保持不变。漆酶催化的木质素磺酸盐氧化后，含木质素磺酸盐的乳胶基涂料和淀粉基薄膜的水稳定性得到改善，这表明聚合成水溶性较低的产品。此外，淀粉基薄膜的 E 模量增加了30％，这表明漆酶催化的木质素磺酸盐聚合导致薄膜的刚度增加。结果表明，漆酶和木质素磺酸盐可用作活性包装中的除氧系统，并且木质素磺酸盐的酶催化聚合有助于改善水稳定性和机械性能

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