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

Author:
Kaya, Murat, Sargin, Idris, Sabeckis, Ignas, Noreikaite, Deimante, Erdonmez, Demet, Salaberria, Asier M., Labidi, Jalel, Baublys, Vykintas, TubelytÄ—, Vaida
Source:
Carbohydrate polymers 2017 v.163 pp. 162-169
ISSN:
0144-8617
Subject:
Blattodea, antifungal properties, bacteria, biofilm, chitin, dust, hydrophobicity, insects, mechanical properties, nanofibers, pathogens, thermal stability
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.
Agid:
5651065