Abstract
We found out the following fact as the results of our study on Shiraki (Sapium Japonicum) oil from Niigata prefecture. (1) Shiraki fruit contains 66% drying oil. (Iodine value 162.4). (2) This oil is composed of about 5.9% solid fatty acids and about 90. 6% liquid fatty acids. (3) The solid fatty acids consist of about 66% palmitic acid, about 24% stearic acid and about 10% fatty acids higher than stearic acid. (4) As the result of oxidation and bromination tests, it is clear that the liquid fatty acids consist of about 21% oleic acid, 66% linoleic acid and 9% linolneic acid. (5) In short, the real yields of Shiraki oil components show that it consists of about 55% linoleic acid, about 19% oleic acid, about 8%linolenic acid, about 4% palmitic acid, about 1% stearic acid and small quantities of higher saturated fatty acids.
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