Michigan State University
The samples of Genus Camellia consist of sixteen species of Subgenus Camellia, one species of Subgenus Thea, and ten species of Subgenus Metacamellia. The oil content of kernel of Subgenus Camellia is higher, so is the content of oleic acid and linoleic acid in the composition of fatty acid, and there are one or two species containing linolenic acid essential to human body. On the contrary, the oil content of kernel Subgenus Metacamellia is lower, so is the content of oleic acid and linoleic acid in the composition of fatty acid, and there is some content of 5.16-9.04 percent of sinapic acid in unsaturated fatty acid.It has been discovered that seed oil of Camellia contains linolenic acid and sinapic acid. In the 25 tested species, Camellia pitardii and four other species have been found containing linolenic acid, and six species, including Camellia cuspidata, containing sinapic acid.