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Creators/Authors contains: "Joshi, Ram Datt"

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  1. Abstract This research aims to develop chitosan-zein protein films supplemented withBergenia ciliata(Bc) extract, a traditionally important medical herb of Himalayan origin. The film’s physicochemical, mechanical, antioxidant, and antimicrobial properties were systematically explored. The opacity of chitosan film increased from 2.42 ± 0.97 to 10.32 ± 1.44 upon introducing zein (Z) protein in chitosan (Cs) in a 1:2 ratio (w/w); conferring enhanced UV-blocking attributes. IncorporatingB. ciliataextracts in the chitosan-zein film (Cs-Z-Bc) under optimized conditions further increased the opacity to 16.27 ± 1.03 without compromising the tensile strength. The α-diphenyl-β-picrylhydrazyl scavenging activity of the Cs-Z-Bc film was found to be 97.07 ± 1.09%. Additionally, these optimized films displayed significant antimicrobial efficacy, with zones of inhibition of 11.4 mm measured for gram-positive strains likeC. subtilisandS. aureusand 11.2 mm and 11.1 mm forE. coliandK. pneumoniae(gram-negative) bacterial strains. The film also showed excellent biodegradable properties. The shelf life study of Himalayan cheese was significantly increased when wrapped with the film. These findings suggested thatB. ciliataextract-fortified chitosan-zein films can be an excellent food packaging material. 
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    Free, publicly-accessible full text available August 12, 2026