http://orcid.org/0000-0001-8860-1350
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ABSTRACT
Acid soluble collagen (ASC) and pepsin soluble collagen (PSC) were isolated from rohu skin with the yield of 64.2 and 6.8% (dry weight basis), respectively. Both collagens had glycine as the major amino acid with imino acid content of 196–202 residues/1,000 residues and were characterized as type I collagen with molecular composition of (α1)2α2-heterotrimer. Fourier transform infrared spectra of both collagens were similar, with no shift in wavenumber of all amide bands. The Tmax value of ASC and PSC was 36.40 and 35.48°C, respectively. The zero surface net charge of ASC and PSC was found at pH 5.9 and 5.3, respectively.
Acknowledgments
We would like to thank the Faculty of Agro-industry, Prince of Songkla University for the permission to use facilities for this research.
Funding
This research was funded by King Mongkut’s University of Technology North Bangkok for contract no. KMUTNBGEN-58-40.