ALCOHOLIC COMPONENTS OF HUMAN HAIR AND SCALP LIPIDS

[摘要] The sterol and alcohols of human hair and scalp lipids were concentrated by saponification and chromatography of the unsaponifiable portion over alumina; the alcoholic components (Fraction V) were eluted from the column by means of absolute methanol. For one large batch of lipids (CF-45E), Fraction V was filtered from solid and the resulting rectified oil dissolved in n-hexane, chromatographed over partially spent silica gel (activity: 20) and the column eluted with benzene, chloroform, 1-butanol and methanol. By this method, separation of high and low-molecular weight components and polar materials was afforded. The alcohols were converted to the acetates and analyzed by gas chromatography. The distribution of fatty alcohols in Fractions V from lipids collected according to sex, race and scalp condition was rather consistent from pool to pool and no unequivocal differences could be attributed to any particular category though a few discrepancies were apparent. Thus, an irregularity was noted in the C20 component from 2 pools and branched C14 and C16 alcohols could not be detected in yet another one.