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COLLAGEN IN THE TISSUES OF SQUID ILLEX ARGENTINUS AND LOLIGO PATAGONICA ‐ CONTENTS AND SOLUBILITY
Author(s) -
SADOWSKA MARIA,
SIKORSKI ZDZISLAW E.
Publication year - 1987
Publication title -
journal of food biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.507
H-Index - 47
eISSN - 1745-4514
pISSN - 0145-8884
DOI - 10.1111/j.1745-4514.1987.tb00116.x
Subject(s) - hydroxyproline , loligo , connective tissue , solubility , biology , squid , anatomy , chemistry , biochemistry , food science , fishery , organic chemistry , genetics
ABSTRACT Collagen was isolated from the skin, connective tissue sheets, and mantle muscle of squid Illex argentinus and Loligo patagonica, by extracting all soluble noncollagenous material. The tissues and the collagen isolates were characterized by determining the total nitrogen, hydroxyproline, and solubility. The contents of hydroxyproline in the collagen isolate of skin, membranes, and muscle of Illex were 5.3, 8.0, and 4.4% dry matter and of Loligo 6.1, 7.4, and 4.9%, respectively. The collagen contents in these tissues were in Illex 4.9, 7.8, and 1.0; in Loligo 3.4, 4.9, and 0.3%, respectively, in the wet material. Collagen preparations obtained from the skin, membranes, and mantle muscle of Loligo yielded, respectively, 9%, 4%, and 8% collagen soluble in citrate buffer. For Illex squid the solubilities were 41%, 6%, and 21%, respectively.