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Carbohydrate Polymers 2020-Nov

Cassava starch/carboxymethylcellulose edible films embedded with lactic acid bacteria to extend the shelf life of banana

Samo registrirani uporabniki lahko prevajajo članke
Prijava / prijava
Povezava se shrani v odložišče
Siying Li
Yanlan
Tengteng Ji
Dur Sameen
Saeed Ahmed
Wen Qin
Jianwu Dai
Suqing Li
Yaowen Liu

Ključne besede

Povzetek

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.

Keywords: Antioxidant; Edible films; Exopolysaccharide; Probiotics.

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