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Studies of jasmine wax: I. Physical properties and chemical composition
Author(s) -
ElMagoli S. B.,
Hassanen N. Z.,
Morad M. M.,
ElWakeil F. A.
Publication year - 1982
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/bf02662264
Subject(s) - wax , fraction (chemistry) , chemistry , aldehyde , carbon number , chemical composition , hydrocarbon , organic chemistry , ketone , chromatography , gas chromatography , carbon chain , mass spectrometry , primary (astronomy) , fatty acid , carbon fibers , mass spectrum , catalysis , materials science , alkyl , physics , astronomy , composite number , composite material
Abstract Jasmine wax was fractionated using thin layer chromatography. Six fractions were isolated, purified and identified using combined gas liquid chromatography and mass spectrometry. Infrared spectra were adopted for the chemical structure confirmation of each fraction. The fractions were 49.44% hydrocarbons, 15.73% esters, 3.49% aldehydes and ketones, 7.91% primary fatty alcohols, 8.31% free fatty acids and 8.99% was considered origin. The hydrocarbon fraction was found to consist mainly of saturated chains with C 29 , C 31 and C 27 the most predominant. The aldehyde fraction was characterized by straight chains with even numbers of carbon atoms ranging between C 10 and C 28 , whereas the ketone fraction was found to contain a longer chain structure, i.e., C 36 . However, the C = O was found to be at the C 8 and C 11 positions. Free primary alcohols were found to occur in short chains, indicating their existence in the liquid phase, whereas the free fatty acids were found in long chains and were more likely in the solid phase.