The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2002
Filed:
Jul. 03, 2000
Siegmund Lang, Braunschweig, DE;
Andreas Brakemeier, Braunschweig, DE;
Dieter Wullbrandt, Hofheim, DE;
Andreas Seiffert-Störicko, Hofheim, DE;
Abstract
The invention relates to sophoroselipids of formula (I) wherein R represents H, —CH CH , —CH CH CH , n is an integer number from 2 to 27, R and R represent, independently from each other, H or a group of formula (II), and R represents H or —OH. The invention also relates to a method for producing sophoroselipids of formula (I) wherein R , R , R and n have the aforementioned meanings and R represents —CH , —CH CH or —CH CH CH . According to this method, a yeast capable of secreting a sophoroselipid in the form of a lactone in the culture excess, is fermented in a culture medium containing a glycerin. a succinate, a mono-, di- and/or tri-saccharide and a lipid precursor, said sophoroslipid being then isolated from the culture solution. The inventive method is characterised in that the lipid precursor contains one or more 3-alkanols, 4-alkanols or an alkanone with a chain length from 6 to 30 carbon atoms or mixtures of said alkanoistalkanone. Furthermore, according to a variant of the aforementioned method for producing sophoroselipids of formula (I), wherein R , R , R and n have the meanings aforementioned and R represents —CH , —CH CH or —CH CH CH , the culture medium is maintained during fermentation under a reduced oxygen concentration. The new sophoroselipids may be used, e.g., as surfactants, cosmetics, disinfecting agents or pharmaceutical products.