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:
Mar. 09, 1999
Filed:
Oct. 17, 1997
Remy Marchal, Chatou, FR;
Michel Warzywoda, Rueil Malmaison, FR;
Bernard Chaussepied, La Celle Saint Cloud, FR;
Institut Francais du Petrole, , FR;
Abstract
A process for the production of sophorolipids by a stock of Candida bombicola or apicola in a medium that contains a source of nitrogen and a substrate is described. The process includes a first fermentation cycle that includes a stage of growth of the stock and a stage of production of a fermentation wort. The following stages are carried out at least once: a) a portion of the wort is drawn off; b) a mineral that contains nitrogen is added to the remaining portion to constitute a second medium; c) a new fermentation cycle is carried out from this second medium, and another wort is produced. Sophorolipids are recovered from these worts of stages (a) and (c). The duration of the first and new fermentation cycles is at least 30 hours.