title: Antibacterial, mechanical, and barrier properties of sago starch film incorporated with Betel leaves extract.
abstract: The antimicrobial, mechanical and barrier properties and light transmission of sago starch film incorporated with different percentage of Betel leaf extract (5%, 10%, 20%, and 30%) were evaluated. With regard to mechanical properties, tensile strength decreased when the percentage of extract increased. Elongation at break (%) and seal strength (N/m) increased with increasing percentage of extract from 5% to 20%, while decreased for films containing 30% extract due to heterogeneity of films in this percentage. With regard to barrier properties, water vapour and oxygen barrier properties decreased in all samples when percentage of the extract increased. Antimicrobial activity of all the films increased against both Gram positive and Gram negative bacteria as percentage of Betel leaf extract increased, except for Psuedomonas aeruginosa, which was not susceptible at any percentage of the extract.
authors.affiliation: Food Biopolymer Research Group, Food Science and Technology Department, Damghan Branch, Islamic Azad University, Damghan, Semnan, Iran.
authors.forename: Leila
authors.initials: L
authors.lastname: Nouri
authors.affiliation: Food Biopolymer Research Group, Food Science and Technology Department, Damghan Branch, Islamic Azad University, Damghan, Semnan, Iran. Electronic address: fstiau@damghaniau.ac.ir.
authors.forename: Abdorreza
authors.initials: A
authors.lastname: Mohammadi Nafchi
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D001114:Areca / Q000737:chemistry*; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D010539:Permeability; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D018515:Plant Leaves / Q000737:chemistry*; D012995:Solubility; D013213:Starch / Q000737:chemistry* / Q000494:pharmacology; D013227:Steam; D013718:Tensile Strength; D014867:Water / Q000737:chemistry
chemical_list: D000900:Anti-Bacterial Agents; D010936:Plant Extracts; D013227:Steam; D014867:Water; D013213:Starch
keywords: Antimicrobial activity; Barrier properties; Betel leaf; Mechanical properties; Sago starch film; UV protector