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Factors affecting analytical values of beeswax and detection of adulteration
Author(s) -
Tulloch A. P.
Publication year - 1973
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/bf02641800
Subject(s) - beeswax , wax , carnauba wax , saponification , chromatography , hydrocarbon , chemistry , paraffin wax , gas chromatography , fraction (chemistry) , organic chemistry
Various factors that could affect analytical values for beeswax, and so also detection of adulteration, have been investigated. Ester value determination was checked using synthetic monoesters. Gas liquid chromatographic analysis of overheated wax confirmed that free acids decreased on heating and also showed loss of unsaturated hydrocarbons and of monoesters. The saponification cloud point detected as little as 1% of a paraffin mp 83 C (chain length C 20 –C 60 ) but only 6% or more of a paraffin mp 53 C (chain length C 20 –C 35 ). Gas liquid chromatographic analysis of the hydrocarbon fraction of waxes containing these paraffins detected 1% of either paraffin, but only the low melting paraffin was estimated accurately. The presence of 2.5% of carnauba wax in beeswax was detected and estimated by gas liquid chromatography.