ISSN:
1468-2494
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
α-bisaboloi and d-panthenol are used in many cosmetic preparations, respectively, for their anti-inflammatory and regenerating properties. Their quantitative determination was an important element of their evaluation in these emulsions. Their concentration has been determined by gas chromatographic techniques, using a flame ionization detector. In both cases, the internal standards have been chosen for their compatibility with the analysis of extracted substances.Owing to the complexity of the cosmetic formulations, a preliminary extraction of α-bisabolol and d-panthenol was necessary. For the two substances the preparative separation was based on a liquid–liquid extraction. After dissolving the emulsion in methanol and diluting it with an aqueous buffer solution α-bisabolol was then extracted by ethyl acetate and d-panthenol by ethyl formate.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1467-2494.1991.tb00557.x
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