Premium
Free primary alcohols in oils and waxes from germs, kernels and other components of nuts, seeds, fruits and cereals
Author(s) -
Kawanishi Kazuko,
Aoki Kumlko,
Hashimoto Yohei,
Matsunobu Akira
Publication year - 1991
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02660604
Subject(s) - wax , germ , glyceride , triacontanol , chemistry , fatty alcohol , chromatography , alcohol , organic chemistry , biology , fatty acid , microbiology and biotechnology
The composition of free primary alcohols in oils and waxes obtained from the germ, kernel, seed coat, shell and skin (peel) of various nuts, seeds, fruits and cereals and from the chrysalis of silkworm was examined. These alcohols are usually present in small amounts, along with large quantities of hydrocarbons, esters and glycerides in oils and waxes. Thus, it is necessary to remove hydrocarbons, esters and glycerides to analyze the alcohols. We found that preparative reverse‐phase thin‐layer chromatography (TLC) was the best way to isolate alcohols from oils and waxes. Gas liquid chromatography (GLC) then detected hexacosanol, octacosanol and triacontanol in the oils and waxes. Octacosanol usually was the predominant alcohol. Relationships between the organs from nuts, seeds, fruits and cereals and the contents of octacosanol are suggested. For example, degermed kernels contained two times more octacosanol than the germ, and the skin coat and shell contained one‐half and one‐fortieth the octacosanol of the germ, respectively.