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Composition of insect waxes. I. Waxes of exotic coccidae: Gascardia madagascariensis, Coccus ceriferus and Tachardia lacca
Author(s) -
FaurotBouchet E.,
Michel G.
Publication year - 1964
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/bf02654873
Subject(s) - wax , long chain , composition (language) , hydrocarbon , chemistry , organic chemistry , biology , botany , polymer science , philosophy , linguistics
Composition of several coccid waxes has been determined by means of alumina and gas‐liquid chromatography. Coccus ceriferus wax is a mixture of the esters of C 26 and C 28 alcohols with C 24 , C 26 and C 28 acids. Tachardia lacca wax has a high percentage of free alcohols (essentially C 28 alcohol); Gascardia madagascariensis wax contains a large proportion of free acids. In addition to C 26 , C 32 and C 34 normal chain acids, there are several C 30 , C 32 and C 34 hydroxy acids, in which the hydroxyl function is situated in the middle of the hydrocarbon chain. Small proportions of odd and even hydrocarbons are present in all of the waxes investigated.