中国农业科学院蜜蜂研究所李相昕、田文礼、彭文君研究员团队在Carbohydrate Polymers发表题目为“Propolis ethanol extract functionalized chitosan/Tenebrio molitor larvae protein film for sustainable active food packaging”研究论文（蜂胶乙醇提取物功能化壳聚糖/黄粉虫幼虫蛋白膜用于可持续活性食品包装）。摘要： 新型昆虫蛋白作为未来食品资源在食品领域的应用越来越受到人们的关注。本研究以黄粉虫幼虫蛋白（TMP）、壳聚糖（CS）和蜂胶乙醇提取物（PEE）为原料，开发了一种具有良好力学性能的可生物降解抗菌食品包装材料。PEE在薄膜基质中分散均匀，复合膜表现出良好的均质性和相容性。薄膜中CS、TMP、PEE之间存在较强的分子间氢键相互作用，表现出非晶态材料的结构特征；与CS/TMP薄膜相比，添加3%PEE使复合薄膜的断裂伸长率（34.23%）、水蒸气阻隔性（22.94%）、热稳定性（45.84%）、表面疏水性（20.25%）和生物降解性均有明显提高。复合膜具有较强的抗氧化和抗菌性能，且随着PEE含量的增加，抗氧化和抗菌性能增强，埋入土壤后可生物降解，是一种环保的废弃处理方式。复合膜可有效延缓草莓的腐烂，延长草莓的保质期。利用昆虫蛋白和壳聚糖开发的可生物降解活性包装膜可作为石油基包装材料的替代品，在水果保鲜领域具有广阔的应用前景。研究结果：3.1. 复合膜的表征3.1.1. 外观及形貌观察Fig. 1. (a) Appearance images of the films and (b) SEM images of the surface and cross-section of the CS/TMP films loaded with different propolis ethanol extract content.3.1.3. 复合薄膜的 FTIR 光谱3.1.4 复合薄膜的 XRDFig. 2. (a) FTIR spectra, (b) XRD spectra of CS, TMP and CS/TMP composite films, (c) thickness and (d) WVP of composite films.3.1.5 复合薄膜的厚度和力学性能Fig. 3. Mechanical properties of different CS/TMP films3.1.8. 热稳定性分析3.2 复合膜的抗氧化活性3.3 复合薄膜的抗菌活性Fig. 4. (a) TGA curve, (b) DTG curve, (c) antioxidant activities of composite films, (d) zone diameter of inhibition, and (e) inhibitory activity of forming solutions of different composite films against S. aureus and E. coli.3.4 复合膜的土壤生物降解性3.4.1. 水溶性试验Fig. 5. The recorded of dissolved state of CS/TMP composite film in (A) deionized water (DW), (B) tap water (TW), (C) deionized water mixed with detergent (DDW), and (D) tap water mixed with detergent of films (DTW) (a); determination of turbidity in aqueous solution of composite film dissolved in different solutions at different time (b).3.4.2. 降解评估Fig. 6. Biodegradation of composite films at different times of burial in soil (a); degradation rate of composite film at different burial time (b).3.5 CS/TMP/PEE 复合膜对草莓的保鲜效果Fig. 7. Changes in appearance of the strawberries covered with different composite films during different storage times.Fig. 8. Changes in (a) rotting rate, (b) weight loss, (c) pH, (d) TSS, (e) TA of the strawberries covered with different composite films during different storage times.原文链接：https://doi.org/10.1016/j.carbpol.2024.122445
