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Utilization of Restaurant Waste Oil as a Precursor for Sophorolipid Production
Author(s) -
Shah Vishal,
Jurjevic Mia,
Badia Daniel
Publication year - 2007
Publication title -
biotechnology progress
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.572
H-Index - 129
eISSN - 1520-6033
pISSN - 8756-7938
DOI - 10.1021/bp0602909
Subject(s) - erlenmeyer flask , fermentation , raw material , laboratory flask , yield (engineering) , pulp and paper industry , oleic acid , waste management , food science , chemistry , fatty acid , microbiology and biotechnology , biochemistry , biology , chromatography , organic chemistry , materials science , engineering , metallurgy
Approximately 100 billion liters of oil is generated per week as waste from restaurants around the country. Because of health, environmental, and economic factors, current methods of disposal are ineffective for disposal of the restaurant oil wastes. In this study we have investigated the ability of Candida bombicola to fermentatively transform the restaurant oil waste into glycolipids called sophorolipids. Batch and fed‐batch studies were carried out using oil waste as the lipid feedstock in Erlenmeyer flasks and in a fermentor. Batch fermentation in a fermentor gave the highest yield of sophorolipids of 34 g L −1 . Fermentation using oleic acid as control feedstock were also carried out. Batch fermentation in the fermentor using this pure fatty acid gave a highest yield of 42 g L −1 . The difference in the sophorolipid yield was attributed to the fatty acid composition of restaurant oil waste.