Effect of PVA-based films incorporated with postbiotics, flax seed mucilage and guar gum to enhance the postharvest quality of fig fruits.

Eco-friendly antimicrobial bio-composite films (BCF) were produced by using guar gum (GG), flax seed mucilage (FM) and polyvinyl alcohol (PVA), supplemented with cell-free supernatant (CFS) of Lactobacillus plantarum (L. p) and Lactobacillus delbrueckii (L. d) by the solvent casting technique. The BCF was categorized into: PVA, PVA + FM, PVA + GG, PVA + FM + GG, PVA + FM + CFS, PVA + GG + CFS, PVA + FM + GG + CFS. The film's mechanical, morphological, physical, and antimicrobial properties were characterised. The mechanical, and hydrophobic features of the BCF were increased with the incorporation of FM, GG, and these attributes were faintly decreased with the fusion of postbiotics in films. However, BCF with postbiotics exhibited antimicrobial activity and UV barrier and biodegradable traits, while BCF without postbiotics did not show any antimicrobial effect. According to the characterization study the fabricated PVA + FM + GG and PVA + FM + GG + CFS was employed as packaging material for fig fruit to prolong the shelf life. Overall, PVA + FM + GG + CFS-based packed fig fruits has prolonged shelf life of till 12 days.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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