Journal of Lipid Research, Vol 26, 1438-1443, Copyright © 1985 by Lipid Research, Inc.
Composition of the hydrocarbon fraction of goats' milk
J Cerbulis, VP Flanagan and HM Farrell Jr
The hydrocarbon fraction of the neutral lipids of goats' milk was
chromatographically purified and analyzed by gas-liquid chromatography and
mass spectrometry. The goats' milk samples, which were collected during the
spring of the year, represent a cross-sectional analysis; the purified
hydrocarbon fraction displays a broad spectrum of compounds. The major
components of the hydrocarbon fraction identified for the first time in
goats' milk were 3,7,11,15-tetramethylhexadec-2- ene (phytene-2) (1.5%),
squalene (approximately 2.5%), and n-C29H60 (4.2%); in addition, a series
of odd and even carbon number n-alkanes (C15 to C33), a series of alkenes
(C16 to C23), and a series of branched chain hydrocarbons were found. The
goats' milk hydrocarbon fraction, in comparison to the known distribution
from cows' milk, contains a good deal less squalene and phytene, and is
more complex. One human milk hydrocarbon fraction isolated from a
longitudinal composite sample from one lactation displays a distribution
that appears to be more closely related to that of human skin lipids (1983.
J. Lipid Res. 24: 120-130) than to those of goats' and cows' milk.
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