Assessment of Antioxidant and Antimicrobial Property of Polyphenol-Rich Chitosan-Pineapple Peel Film

This work aimed to evaluate the antioxidant and antimicrobial capacities of pineapple peel extract-incorporated chitosan films establish its utility as an active food packaging film. Total phenol total flavonoids in ethanolic extract (11.1 ± 0.82 mg GAE/g sample, 3.86 0.4 Quercetin/g sample) were determined be higher than those methanolic (7.98 0.55 2.37 0.13 quercetin/g activity was observed for (PEE). Similarly, PEE-enriched film also reported greater compared (PME)-incorporated The phenols, flavonoids, significant accounted due contents ferulic acids, quercetin, kaempferol both PEE PME quantified via triple quadrupole LC/MS/MS system. These alcoholic extracts exhibited inhibitory zones against Gram-positive (Bacillus cereus, Staphylococcus aureus) Gram-negative (Escherichia coli, Salmonella typhimurium) food-borne bacterial strains. lowest minimum concentration bactericidal (0.625 mg/ml) B. cereus. Pure at ≥7 log CFU/ml after 24 h showed lower reduction all organisms, whereas chitosan-PEE (at ≤5 logs CFU/ml) chitosan-PME ≤6 expressed four isolates. Thus, this led utilization waste well provided alternative nonbiodegradable films.