Using glucose/rac. 2-alkanols as carbon sources for the cultivation of Candida bombicola novel types of sophorose lipids were isolated as major products.Among all lipophilic constituents 2-alkanol was found as the major hydrophobic moiety (> 75%) involved in three new sophorose lipids differing only in the degree of acetylation of the sophorose. Additional monooxygenation of the alcohol leads to the incorporation of 2,(e-1)-alkandiol; glycolipids with up to four glucose units were obtained.

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This paper describes the repertoire of analytical methods which is currently available for the determination of Alkylpolyglucosides (APGs). The methods range from chromatographic techniques (hightemperature gas chromatography, high-performance liquid chromatography, thin-layer chromatography) to methods which allow a fast and easy (but unselective) determination of sum parameters. For the first time a derivatization method is described which converts APGs into anionic compounds that can be titrated potentiometrically. Analytische Methoden zur Bestlmmung von Alkyipolyglucosiden.Dieser Artikel beschreibt das analytisch-chemische Repertoire, das momentan zur Bestimmung von Alkylpolyglucosiden (APGs) zur Verfugung steht. Die Moglichkeiten erstrecken sich von chromatographischen Techniken (Hochtemperatur-Gaschromatographie, Hochleistungsflussigchromatographie und Dunnschichtchromatographie) bis hin zu Methoden zur schnellen, aber unspezifischen Bestimmung von Summenparametern. Erstmalig wird eine Derivatisierungsmethode beschrieben, die die APGs in ionische Derivate uberWhrt; diese sind durch potentiometrische Titration bestimmbar.

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