Effect of glycerol and zinc oxide addition on antibacterial activity of biodegradable bioplastics from chitosan-kepok banana peel starch

Innovation in Polymer Science and Technology 2016

材料科学;化学

Agustin, Y.E.^1 ; Padmawijaya, K.S.^1

Chemical Engineering Department, University of Surabaya, Surabaya, Indonesia^1

关键词: Anti-bacterial activity;    Anti-microbial activity;    Bacterial growth;    Biodegradability tests;    Commercial plastics;    Gram-negative bacteria;    Inhibition assays;    Optimum composition;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/223/1/012046/pdf
DOI  :  10.1088/1757-899X/223/1/012046

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Bioplastic is a biopolymer plastic that can be degraded easily by microorganisms so it can be used as alternative replaced commercial plastic. This research aims to study the effects of additive (glycerol and zinc oxide) addition in the characteristic of antimicrobial activity and biodegradability bioplastic from chitosan and Kepok banana peel starch. In this research, bioplastics were synthesized by chitosan as the backbone and antimicrobial, Kepok banana peel starch as filler, glycerol as plasticizer, also ZnO as an amplifier. Bioplastics were characterized their antimicrobial activity using agar diffusion method (zone inhibition assay) and biodegradability test using microbe (EM4). The result showed the optimum composition of bioplastic is kitosan 4 - 30% starch - 5 mL glycerol - 5% ZnO gives the good antimicrobial activity towards gram positive and gram negative bacteria, and this bioplastic will be degraded within an hour and 12 min. Thus, this bioplastics may have potential to be use for food packaging by having biodegradable properties and also inhibit bacterial growth.