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. 2022 Nov 16;20(11):718. doi: 10.3390/md20110718

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Marine collagen isolated from codfish skins and its characterization. (A) Collagen extracted from fish skins. (B) SDS-PAGE gel electrophoresis of type I collagen wherein represents 1—PageRuler^® Plus Prestained protein ladder, 2—collagen standard from bovine skin (Sigma) and 3—collagen profile (1%) isolated from codfish. (C) FTIR spectrum and values of the amide peaks. (D) Amino acid composition of codfish collagen (expressed as residues/1000 residues). (E) Circular dichroism spectrum of the collagen.