Biocompuesto bicapa incorporado con nisina: caracterización y eficacia contra Escherichia coli.

The main objective of this research study was to develop a bilayer active biocomposite (BA) from cassava bran, fique, and glycerol with a coating of polylactic acid (PLA) and nisaplin® that would allow its implementation in high humidity food matrices. Mechanical and thermal properties, water absorption, and antimicrobial effect on Escherichia coli were evaluated. A one-factorial completely randomized experimental design was performed with four concentrations of nisin. The flexural test revealed that the addition of PLA and nisin had no significant effect on stress or flexural modulus. Thermal analysis by differential scanning calorimetry (DSC) resulted in two endothermic peaks, one exothermic peak, and one glass transition peak. The BA's water absorption test had a percentage of 35%. It is concluded that the BA had no inhibitory effect on E. coli, but showed promissory potential for its application in high humidity foods. [ABSTRACT FROM AUTHOR]