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KMID : 0613820080180060832
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Journal of Life Science
2008 Volume.18 No. 6 p.832 ~ p.838
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Recovery and Utilization of Proteins and Lipids from the Washing Wastewater in Marine Manufacture by Isoelectric Point Shifting Precipitation Method－4. Utilization of the Recovered Protein Fractions as the Alternative Feed of Fish Meal
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Kim Kwang-Woo
Kim Ga-Hyeon
Ueo Myung-Hee
Kim Ok-Seon
Cho Soon-Yeong
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Abstract
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Mackerel water-soluble protein fraction produced by washing the mackerel meat were concentrated by isoelectric point shifting precipitation process, and the concentrates were utilized as the alternative feed of fish meal. In the 1st aquaculture diet experiment for Israel common carp, the feed conversion ratio decreased in proportion to the rise in the percentage of the recovered protein containing a residual lipid, which was added to the fish meal. It was supposed that the low feed efficiency was because of lipid oxidation in the recovered protein fraction. In addition, 2nd aquaculture diet experiment for Israel common carp was conducted after removing the oxidized lipid in the recovered protein fish meal. When a portion of the fish meal was substituted by the recovered protein devoid of the residual lipid, the feed conversion ratio increased in proportion to the amount of the substitute being added to the fish meal. Therefore, the recovered protein fraction of the mackerel washing wastewater from mackerel processing factory could be used as the alternative feed of fish meal.
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KEYWORD
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Therecoveredproteinfraction, isoelectricpointshiftingprecipitation, Israelcommoncarp, lipidoxidation, feedefficiencyratio
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