Straw mushrooms are prone to autolyze, leading to a high requirement of environmental humidity. In this work, thermoplastic starch/polylactic acid/poly (butylene adipate-co-terephthalate) (TPS/PLA/PBAT) film was produced by extrusion. The moisture permeability of the film was controlled by adjusting the content of TPS, which could be expected to further control humidity of the microenvironment in the package. Results revealed that the water vapor transmission rate of the film linearly increased from 612.31 g/m²·24 h to 1082.50 g/m²·24 h with the increase in the TPS concentration. The TPS/PLA/PBAT film with 30 wt% TPS showed the strongest inhibition on the autolysis of straw mushrooms compared with other groups, effectively delaying the increase in the free water, soluble solid content, rate of weight loss, and polyphenol oxidase of straw mushrooms and extending the shelf life of straw mushrooms from 24 h to 72 h.

草菇易自溶，对环境湿度要求高。在这项工作中，通过挤出生产热塑性淀粉/聚乳酸/聚（己二酸丁二醇酯-共对苯二甲酸酯）（TPS/PLA/PBAT）薄膜。通过调节TPS的含量来控制薄膜的透湿性，有望进一步控制包装内微环境的湿度。结果表明，薄膜的水蒸气透过率从612.31 g/m ² ·24 h线性增加到1082.50 g/m ²·24 h 随着TPS 浓度的增加。与其他组相比，含30 wt% TPS的TPS/PLA/PBAT薄膜对草菇自溶的抑制作用最强，有效延缓了草菇游离水、可溶性固形物含量、失重速度和多酚氧化酶的增加。将草菇的保质期从 24 小时延长至 72 小时。