Interrelation of Collagen Chemical Structure and Nanostructure with Firmness of three Body Regions of Jumbo Squid (Dosidicus gigas)

Héctor M. Sarabia-Sainz, Wilfrido Torres-Arreola, Enrique Márquez-Ríos, Hisila C. Santacruz-Ortega, Ofelia Rouzaud-Sández, Elisa M. Valenzuela-Soto, Alexel J. Burgara-Estrella, Josafat Marina Ezquerra-Brauer*

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

11 Citas (Scopus)

Resumen

The chemical structure, thermal denaturation and nanostructure of collagen, obtained from a cation-exchange separation of the mantle, fins and tentacles of jumbo squid (Dosidicus gigas), were comparatively studied. The main idea of this work, was to provide an in-depth understanding of the interdependence between pyridinoline (Pyr) content, helix chemical structure and nanostructure of squid collagen with squid tissue firmness. The tentacles required more shear force and its collagen presented the higher temperature and enthalpy of transition, than the mantle and fins. The tentacle firmness may be explained by the relatively higher imino amino acid content, proline and lysine hydroxylation degrees and Pyr content of its collagen. Moreover, among the regions studied, the collagen from the tentacles had a more intense β band chain. Also, the Fourier transform infrared analysis and Raman spectra, implied that the collagen in the tentacles, was more intermolecularly ordered than the mantle and fins. Consistent with these results, a comparative evaluation of the surface morphology of the three regions, with atomic force microscopy, suggested a more ordered collagen structure in the tentacles (lower roughness values). Based on the above, collagen from tentacles has a higher degree of molecular order that sustains a higher muscle firmness compared to that of other anatomical regions.

Idioma originalInglés
Páginas (desde-hasta)491-499
Número de páginas9
PublicaciónFood Biophysics
Volumen12
N.º4
DOI
EstadoPublicada - 1 dic. 2017

Nota bibliográfica

Publisher Copyright:
© 2017, Springer Science+Business Media, LLC, part of Springer Nature.

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