| Abstract: | Waste liquor from caprolactam manufacture contains many mono- and di-carboxylic acids. Of four yeasts tested, Yarrowia lipolytica DS-1 was the best at decreasing Chemical Oxygen Demand values, by up to 60% with 50 and 100 g waste liquor/after 48 h. Caproic, butyric and valeric acids were utilized most easily. Adipic acid was not decreased below 13% (w/v).The authors are with the Biotechnology Division, Research Centre, Gujarat State Fertilizers Co. Ltd, P.O. Fertilizernagar, Dist. Vadodara, 391 750, India |
