Patent ID: 9629882
Date: 2017-04-25
CPC Classifications: A01N,A23K,A61K,A61P,C09D,C12N,C12P,C12R

Claim:
1. A method for preparing a biosurfactant, the method comprising: (a) growing (b) separating the bacterial cells from the culture to obtain a liquid supernatant that is free of the bacterial cells and that comprises extracellular products and inorganic salts; (c) lyophilizing the liquid supernatant at −80° C. and 10 militorr (1.33 Pa) to obtain a powder comprising the extracellular products and inorganic salts; (d) mechanically sieving said powder, with horizontal stirring, to obtain a sieved powder; and (e) drying the sieved powder at a temperature between 30 and 50° C. for 20 to 30 hours to obtain the biosurfactant as a dry powder having light yellow color and fatty acids having emulsifier and bioactive properties.