Comparison of some commercial waxes by gas liquid chromatography
1973; Wiley; Volume: 50; Issue: 9 Linguagem: Inglês
10.1007/bf02640842
ISSN1558-9331
Autores Tópico(s)Postharvest Quality and Shelf Life Management
ResumoAbstract Volatile components (hydrocarbons, monoesters, free acids as methyl esters and free alcohols as acetates) of seven unhydrolyzed commercial waxes‐ouricury, carnauba, Chinese insect, lac, esparto, candelilla and Japan wax—have been analyzed and compared by gas liquid chromatography. Though appreciable portions of the waxes were nonvolatile, the results were sufficient to distinguish the seven waxes completely. Methanolysis products were analyzed directly by gas liquid chromatography, and the results agreed with those previously obtained for hydrolysis products of these waxes. Ouricury wax gave 18% C 24 −C 34 αω‐diols and 4% C 24 −C 32 ω‐hydroxy acids, in addition to 28% C 20 −C 32 aciods and 17% C 22 −C 34 alcohols, on methanolysis.
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