PROPERTIES OF HAIR FAT FROM ADULT MALES ACCORDING TO RACE AND HAIR CONDITION

[摘要] Constants were determined for numerous sebum batches extracted from hair of adult negro and white full-headed and balding males. Analysis of variance revealed increased yields in scalp fat of the negro groups; the interaction of hair condition and race was near significance. The racial difference was also evident with the I numbers, the values ranging lower for the negro samples and possibly with the decreased free cholesterol content of negro full-headed scalp fat as compared to that of white full-headed products (significance at a 5% level). Only the comparison of acid numbers of sebum from negro full-headed and white balding males approached significance at the 5% level and was due to hair condition. No marked differences in yield and acid or I numbers were apparent with the fatty acid mixtures resulting from saponification of representative pooled sebum samples.