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Mar. Drugs 2014, 12(12), 5979-5992; doi:10.3390/md12125979

Customizing Properties of β-Chitin in Squid Pen (Gladius) by Chemical Treatments

1
Department of Chemistry "Giacomo Ciamician", Alma Mater Studiorum, University of Bologna, via Selmi 2, 40126 Bologna, Italy
2
National Research Council (CNR), Institute for Nanostructured Materials (ISMN), Via P. Gobetti 101, 40129 Bologna, Italy
3
Centre for Regenerative Medicine "Stefano Ferrari", University of Modena and Reggio Emilia, Via G. Gottardi, 100, 41125 Modena, Italy
4
Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 183, 41125 Modena, Italy
*
Authors to whom correspondence should be addressed.
Received: 18 September 2014 / Revised: 3 December 2014 / Accepted: 4 December 2014 / Published: 15 December 2014
(This article belongs to the Special Issue Marine Biomaterials)
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Abstract

The squid pen (gladius) from the Loligo vulgaris was used for preparation of β-chitin materials characterized by different chemical, micro- and nano-structural properties that preserved, almost completely the macrostructural and the mechanical ones. The β-chitin materials obtained by alkaline treatment showed porosity, wettability and swelling that are a function of the duration of the treatment. Microscopic, spectroscopic and synchrotron X-ray diffraction techniques showed that the chemical environment of the N-acetyl groups of the β-chitin chains changes after the thermal alkaline treatment. As a consequence, the crystalline packing of the β-chitin is modified, due to the intercalation of water molecules between β-chitin sheets. Potential applications of these β-chitin materials range from the nanotechnology to the regenerative medicine. The use of gladii, which are waste products of the fishing industry, has also important environmental implications. View Full-Text
Keywords: β-chitin; hierarchical structure; squid pen; deacetylation; mechanical properties; wettability; porosity β-chitin; hierarchical structure; squid pen; deacetylation; mechanical properties; wettability; porosity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ianiro, A.; Giosia, M.D.; Fermani, S.; Samorì, C.; Barbalinardo, M.; Valle, F.; Pellegrini, G.; Biscarini, F.; Zerbetto, F.; Calvaresi, M.; Falini, G. Customizing Properties of β-Chitin in Squid Pen (Gladius) by Chemical Treatments. Mar. Drugs 2014, 12, 5979-5992.

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