水産動物肝臓粉末及びエキス中のビタミンB 群について
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概要
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For the purpose of utilizing B vitamins in the liver of aquatic animals as an animal nutrient, the liver meal and liver solubles were prepared from the livers of several kinds of fish, and analyzed for the amount of B vitamins by the microbiological method. The chopped liver was preliminarily extracted with hot water and the extractives were concentrated under reduced pressure (liver solubles). The residue was desiccated at 60-70°C under reduced pressure, and extracted with hexane to obtain vitamin oil (liver meal). The dehydration with acetone or methanol was also tried and the resulting meal was extracted with acetone or hexane (Table 1). As seen from the table, niacin content is lower in the meal treated with acetone than that in the others. In Table 3, in which the amount of B vitamins in the liver preparations obtained from various species of fish is given, it is seen that the liver meal from tuna contained an especially large amount of B vitamins. The liver meals shown in Table 4 were prepared without removing the extracts. The meal of fin whale showed higher values of vitamin B2, niacin and folic acid, and lower value of vitamin B12 than other meals tested. The meal of yellow fin tuna, on the other hand, contained a very notable amount of vitamin B12, but was poorest in vitamin B2 and niacin content. It may be considered that the amount of water soluble vitamin in the liver of aquatic animals does not vary so greatly as that of vitamin A, according to the species and other conditions.
- 公益社団法人 日本水産学会の論文