Investigation on main characteristic composition of Camellia oleiferaseed oil

The main characteristic compositions of self-made crude oil of 95 kinds of Camellia oleifera seeds and 87 kinds of commercial refined oil collected from the principal Camellia oleifera seed-producing regions in China were analyzed.The results showed that the pure kernel yield was 57.5%-71.8%,and the oil content(dry basis) was 39.6%-65.3%.The saponification value and iodine value of the self-made crude oil were 178.0-197.7 mgKOH/g and 79.3-97.3 gI/100 g,respectively;those of the commercial refined oil were 181.0-188.0 mgKOH/g and 82.0-86.0 gI/100 g,respectively.The main fatty acids' relative contents of self-made crude oil and commercial refined oil were almost equal.The fatty acids' relative contents of crude oil were 7.1%-9.6% for palmitic acid,1.6%-3.3% for stearic acid,77.2%-83.6% for oleic acid,and 5.4%-9.8% for linoleic acid;these fatty acids' relative contents of the commercial refined oil were 3.9%-9.1%,1.0%-4.6%,74.3%-83.6% and 7.0%-15.1%,respectively.Based on above data,the characteristic composition and individual limit values of Camellia oleifera seed oil for national standard could be determined.