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Carbohydr Polym. 2017 May 1;163:162-169. doi: 10.1016/j.carbpol.2017.01.022. Epub 2017 Jan 10.

Biological, mechanical, optical and physicochemical properties of natural chitin films obtained from the dorsal pronotum and the wing of cockroach.

Author information

1
Department of Biotechnology and Molecular Biology, Aksaray University, 68100 Aksaray, Turkey. Electronic address: muratkaya3806@yahoo.com.
2
Department of Biotechnology and Molecular Biology, Aksaray University, 68100 Aksaray, Turkey.
3
Department of Biotechnology and Molecular Biology, Aksaray University, 68100 Aksaray, Turkey; Department of Biology, Vytautas Magnus University, LT-44404 Kaunas, Lithuania.
4
Department of Biology, Faculty of Science and Letters, Aksaray University, 68100, Aksaray, Turkey.
5
Biorefinery Processes Research Group, Department of Chemical and Environmental Engineering, University of the Basque Country (UPV/EHU), Plaza Europa 1, 20018 Donostia-San Sebastian, Spain.
6
Department of Biology, Vytautas Magnus University, LT-44404 Kaunas, Lithuania.

Abstract

In previous studies, chitin-based films were produced from chitin nanofibers in dust form and fully characterized. However, chitin films naturally present in many organisms have not been isolated and characterized. Herein, structurally intact chitin films were successfully extracted from the dorsal pronotum and the wing of cockroach. Despite using the same extraction procedure, important differences were observed. Especially, hydrophobicity, transparency, antifungal and antibacterial biofilm activities of wing chitin film were recorded notably higher than those of chitin film from the dorsal pronotum. However, better mechanical properties were observed for chitin film from the dorsal pronotum. Notably, among the tested bacteria, two common pathogens could not form biofilms on the surface of the films. This study clearly demonstrated natural chitin films obtained from an insect can provide a new perspective to chitin-based applications where chitin films with high thermal stability, transparency, resistance to bacterial biofilm formation and antifungal activity are needed.

KEYWORDS:

Antimicrobial; Biodegradable film; Blaberus giganteus; Hydrophobicity

PMID:
28267493
DOI:
10.1016/j.carbpol.2017.01.022
[Indexed for MEDLINE]

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