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The composition of beeswax alkyl esters
Author(s) -
Holloway P. J.
Publication year - 1969
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/bf02632501
Subject(s) - wax , beeswax , chemistry , alkyl , fatty alcohol , hydrolysis , organic chemistry , alcohol , composition (language) , fatty acid , chromatography , wax ester , carbon chain , linguistics , philosophy
The alkyl esters of beeswax, after isolation from the unhydrolyzed wax by preparative layer chromatography (PLC), have been analyzed directly by high temperature GLC using 1.5% OV1 as liquid phase. In two commercial wax samples examined the ester homologues are predominantly even carbon numbered ranging from C 36 to C 54 . The principal alkyl esters are C 40 , C 42 , C 44 , C 46 and C 48 . The GLC analysis of the ester hydrolysis products revealed that the variations in ester chain length are produced by variations in the esterified primary alcohol chain lengths. The esterified fatty acid is chiefly hexadecanoic acid. The esterified fatty acids differ in composition from the free fatty acids which are also present in the wax.