食品科学 ›› 2025, Vol. 46 ›› Issue (15): 324-305.doi: 10.7506/spkx1002-6630-20241227-235

• 包装贮运 • 上一篇    下一篇

可生物降解聚乳酸/乙基纤维素/玉米醇溶蛋白复合膜的制备及其对冷藏鲜肉保鲜的影响

周玲,喻亚,袁梦婷,吴东旭,陈亚,刘亚楠,苏菁菁,陈思涵,王菊花,盛布雷,薛秀恒   

  1. (1.安徽农业大学食品与营养学院,食品营养与健康联合研究中心,安徽 合肥 230036;2.安徽农业大学 工业新茶饮绿色制造安徽省联合共建学科重点实验室,安徽 合肥 230036)
  • 出版日期:2025-08-15 发布日期:2025-07-22
  • 基金资助:
    安徽省科技专项(202513b10050009);宿州市重大科技专项(SZKJXM2024201)

Preparation of Biodegradable Polylactic Acid/Ethyl Cellulose/Zein Composite Film and Its Effect on the Preservation of Chilled fresh Meat

ZHOU Ling, YU Ya, YUAN Mengting, WU Dongxu, CHEN Ya, LIU Yanan, SU Jingjing, CHEN Sihan, WANG Juhua, SHENG Bulei, XUE Xiuheng   

  1. (1. Joint Research Center for Food Nutrition and Health, School of Food and Nutrition, Anhui Agricultural University, Hefei 230036, China; 2. New-Style Industrial Tea Beverage Green Manufacturing Joint Laboratory of Anhui Province, Anhui Agricultural University, Hefei 230036, China)
  • Online:2025-08-15 Published:2025-07-22

摘要: 以聚乳酸(polylactic acid,PLA)、乙基纤维素(ethyl cellulose,EC)和玉米醇溶蛋白为原料,采用溶液浇铸法制备复合膜,研究不同膜的性能及其在冷鲜肉保鲜中的应用。结果表明,3 种材料在复合膜中具有较好的相容性。添加EC和玉米醇溶蛋白可以有效改善PLA膜的机械性能、热力学性能、表面亲水性、透氧系数和降解性能。当PLA和EC的比例为3∶7时,抗拉强度和断裂伸长率分别达到最大(16.6 MPa和30.5%)。此外,在不同条件下,复合膜也表现出比PLA膜更好的降解能力。当PLA和EC的比例为3∶7时制备的复合膜最佳,在84 d时的降解率为21.75%。在应用中,冷鲜肉使用复合膜包裹后,其抗氧化、抗菌性能和保水性能显著提高。

关键词: 可降解膜;聚乳酸;乙基纤维素;玉米醇溶蛋白;冷藏鲜肉;保鲜

Abstract: In this study, composite films consisting of polylactic acid (PLA), ethyl cellulose (EC), and zein were prepared by solution casting method, and their performance and application in chilled fresh meat preservation were investigated. The results showed that the three materials had satisfactory compatibility in the composite film. Addition of EC and zein effectively improved the mechanical properties, thermodynamic properties, surface hydrophilicity, oxygen permeability, and degradation properties of PLA films. When the ratio of PLA to EC was 3:7, the tensile strength and elongation at break reached maximum values of 16.6 MPa and 30.5%, respectively. Moreover, under different conditions, the composite film exhibited better degradability than the PLA film. The composite film with a 3:7 ratio of PLA to EC had the best performance, with a degradation rate of 21.75% after 84 days. Chilled fresh meat wrapped with the composite film showed significantly improved antioxidant, antibacterial, and water-holding properties.

Key words: biodegradable film; polylactic acid; ethyl cellulose; zein; chilled fresh meat; preservation

中图分类号: