期刊
JOURNAL OF RENEWABLE MATERIALS
卷 7, 期 3, 页码 215-226出版社
TECH SCIENCE PRESS
DOI: 10.32604/jrm.2019.00002
关键词
Hylobius abietis; biowaste; chitin; chitosan; antioxidant
Hylobius abietis is a plant parasitic insect belonging to the order Coleoptera and which causes severe damages to coniferous forests in Northern and Eastern Europe. This current study is aimed to provide a new viewpoint into the waste of this insect by producing chitosan. Dry insect corpses consisted of 27.9% chitin and 86.2% of the chitin was converted into the chitosan. FT-IR spectra analyses confirmed the purity and the deacetylation degree of the produced chitosan (molecular weight of chitosan; 7.3 kDa). This chitosan exhibited antimicrobial activity against 18 bacterial strains. Further, biodegradable chitosan composite films with beta-carotene were produced. Antioxidant activity of chitosan films were found to be higher than chitosan gels; and beta-carotene incorporation further increased the antioxidative properties of the chitosan films. This study demonstrated that the waste of parasitic insect like H. abietis can be evaluated as a source for production of biodegradable and edible chitosan-based films for applications in food coating.
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