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Sarabia-Sainz, Hector M.,Ezquerra-Brauer, Josafat Marina,Santacruz-Ortega, Hisila C.,Rouzaud-Sandez, Ofelia,Valenzuela-Soto, Elisa M.,Acosta-Elias, Monica,Torres-Arreola, Wilfrido 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.1
Muscle from mantle, fins and arms of squid (Dosidicus gigas) were compared based on lysyl oxidase activity (LOX), chemical/structural and thermodynamic properties of highly cross-linked collagen. The arms collagen presented the highest temperature (Tp) and enthalpy of transition. The arms collagen thermic properties may be explained by the higher imino amino acid content, proline and lysine hydroxylation degrees. Moreover, among the regions, the collagen from the arms had a more intense ${\beta}$ band chain, hydroxymerodesmosine peak in the resonance magnetic nuclear spectra and pyridinoline peak in the Raman spectra. Fins showed the highest LOX activity. The LOX activity was associated with the Tp, proline and lysine hydroxylation degrees. These results implied that the collagen in the arms was more intermolecularly ordered than the mantle and fins, and may provide a theoretical basis for a better understanding of the thermal behaviour of squid tissues during management and processing.
He´ctor M. Sarabia-Sainz,Josafat Marina Ezquerra-Brauer,Hisila C. Santacruz-Ortega,Ofelia Rouzaud-Sa´ndez,Elisa M. Valenzuela-Soto,Monica Acosta-Elias,Wilfrido Torres-Arreola 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.1
Muscle from mantle, fins and arms of squid (Dosidicus gigas) were compared based on lysyl oxidase activity (LOX), chemical/structural and thermodynamic properties of highly cross-linked collagen. The arms collagen presented the highest temperature (Tp) and enthalpy of transition. The arms collagen thermic properties may be explained by the higher imino amino acid content, proline and lysine hydroxylation degrees. Moreover, among the regions, the collagen from the arms had a more intense b band chain, hydroxymerodesmosine peak in the resonance magnetic nuclear spectra and pyridinoline peak in the Raman spectra. Fins showed the highest LOX activity. The LOX activity was associated with the Tp, proline and lysine hydroxylation degrees. These results implied that the collagen in the arms was more intermolecularly ordered than the mantle and fins, and may provide a theoretical basis for a better understanding of the thermal behaviour of squid tissues during management and processing.