In this study, two different species of lactic acid bacteria (LAB) (Lactobacillus plantarum and Pedocococcus pentosaceus) with high exopolysaccharide (EPS) yield were selected from a pickled water. Further, edible films based on cassava starch (CS) were developed containing LAB, and sodium carboxymethylcellulose (CMC). After addition of probiotics, the antioxidant activity of the composite film was significantly enhanced. Further, as the probiotic content increased, the antioxidant activity continuously increased. Moreover, L. plantarum showed uniform distribution in the CS/CMC matrix, forming a denser structure, which effectively blocked the penetration of water molecules and exhibited ultraviolet protection. Finally, due to the intermolecular interaction between probiotics and the CS/CMC matrix, the water vapor and light transmission rates were reduced, effectively blocking water and light to prevent lipid oxidation deterioration in food packaging. Banana shelf life has qualitatively improved with 2% LAB added composite film and its application in food packaging has been affirmed.

在这项研究中，从腌制水中选择了两种具有高胞外多糖（EPS）产量的乳酸菌（LAB）（植物乳杆菌和戊糖Pedocococcus pentosaceus）。此外，开发了基于木薯淀粉（CS）的可食用薄膜，其中含有LAB和羧甲基纤维素钠（CMC）。加入益生菌后，复合膜的抗氧化活性显着增强。此外，随着益生菌含量的增加，抗氧化剂活性持续增加。此外，植物乳杆菌在CS / CMC基质中显示出均匀的分布，形成更致密的结构，有效地阻止了水分子的渗透并显示出紫外线保护作用。最后，由于益生菌与CS / CMC基质之间的分子间相互作用，降低了水蒸气和透光率，有效阻隔了水分和光线，从而防止了食品包装中脂质氧化的恶化。通过添加2％LAB复合膜，香蕉的保质期得到了质的改善，并且其在食品包装中的应用得到了肯定。