Biodegradable films based on chitosan and defatted Chlorella biomass: functional and physical characterization

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Title
Biodegradable films based on chitosan and defatted Chlorella biomass: functional and physical characterization
Author(s)
A R Deshmukh; H Aloui; C Khomlaem; A Negi; Jin-Ho YunHee-Sik Kim; B S Kim
Bibliographic Citation
Food Chemistry, vol. 337, pp. 127777-127777
Publication Year
2021
Abstract
Biodegradable films based on chitosan, glycerol, and defatted Chlorella biomass (DCB) were prepared and characterized in terms of thermal stability, mechanical, water barrier, and optical properties. Increasing DCB content from 5 to 25 wt% increased tensile strength of chitosan films by 235%. The incorporation of DCB decreased both moisture content and swelling degree of chitosan/defatted Chlorella biomass (Cs/DCB) films. Furthermore, increasing the content of defatted algal biomass decreased light transmission and reduced water vapor permeability of composite films by more than 60%. As confirmed by scanning electron microscopy and Fourier transform infrared analysis, such improvement in functional and physical properties is mainly due to the homogeneous and uniform distribution of DCB into the polymeric matrix along with the establishment of strong hydrogen bond interactions between chitosan and algal biomass constituents. Moreover, Cs/DCB composite films showed more than 50% of degradation in 60 days soil burial test.
Keyword
ChitosanDefatted Chlorella biomassMechanical propertiesWater barrier propertiesSoil biodegradability
ISSN
0308-8146
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.foodchem.2020.127777
Type
Article
Appears in Collections:
Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
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