Abstract
The proximate composition of various tissues and the fatty acid composition of their lipids in Cyprinidae in Lake Biwa were determined in order to evaluate the nutritive value of fresh water fish. The fishes examined were gengoroubuna, nigorobuna, koi, hasu, oikawa, honmoroko and ugi. The results obtained were as follows. (1) The contents of moisture, crude ash, crude protein and crude lipid in edible portions were 67.8-81.7, 0.9-3.2, 14.5-20.6 and 1.2-12.5%, respectively. The whole body, dressed or semi-dressed portion and fillet of small-sized fishes such as hasu, oikawa and honmoroko were relatively rich in crude ash and crude lipid. (2) The lipids of the edible portions were rich in palmitic acid (C16:0), palmitoleic acid (C16:1ω9)and oleic acid (C18:1ω9). (3) The content of total polyunsaturated fatty acid was lower in lipids of muscles or whole bodies of Cyprinidae than in those of the muscles of marine fishes.
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