To make more effective use of fish–byproduct resources, acid-soluble collagen (ASC) was isolated
from the skin and bones of rainbow trout (Onchorhynchus mykiss) with yields of 9.448% and 1.122% on a wet
weight basis, respectively. Based on their electrophoretic pattern, both collagens were classified as type І with
slightly different amino acid compositions and low imino acid content. From the result, both collagens were
rich in inter- and intra-molecular cross-linked components, ß and γ components with bone collagen having
more band intensity. Similar changes in viscosity of collagens from the skin and bone of rainbow trout were
observed. Collagens from the skin and bones had minimum solubility at pH 9 and 7, respectively. No changes
in solubility were observed in the presence of NaCl up to 3% (w/v). However, a sharp decrease in solubility was
found above 3% NaCl.
کلید واژگان :
Collagen, acid-soluble collagen rainbow trout, Onchorhynchus mykiss, fish skins, fish bones
