Development of cranberry extract films for the enhancement of food packaging antimicrobial properties

The purpose of this study was to investigate the potential cranberry extract as a valuable antibiofilm additive chitosan-based films intended for food packaging applications. Two types differing in plasticizers content (PEG alone or PEG and glycerol) were prepared by casting methodology. Cranberry-extracts proven be suitable presenting antioxidant (i.e. DPPH scavenging ability) antimicrobial activity (towards Escherichia coli ATCC 25922 Staphylococcus aureus 25923). Additionally, among phenolic compounds present, responsible those activities isorhamnetin-3-glucoside, hydroxybenzoic acid, phloridzin, pelargonidin, chlorogenic epicatechin A-type procyanidin that identified HPLC-MS/MS. Films incorporating extracts showed adequate preservation characteristics (light transmission, water oxygen permeability). Produced also able quench radical 92.2 ± 3.9 added) 89.7 0.7 % glycerol inhibit E. S. biofilm formation. Concerning coli, reduction 5 4 log units obtained with added PEG/glycerol, respectively. Remarkably, both chitosan-films completely prevented biofilm. results place cranberry-chitosan option properties value.