Continuous production of citric acid from sugarcane molasses using a combination of submerged immobilized and surface stabilized cultures of Aspergillus niger KCU 520 |
| |
Authors: | Sanjay Gupta Chandra B Sharma |
| |
Institution: | (1) Department of Biosciences and Biotechnology, University of Roorkee, 247 667 Roorkee, India |
| |
Abstract: | Summary A high performance fermentation process for the continuous production of citric acid from sugarcane molasses by using the combination of submerged calcium alginate-immobilized and surface-stabilized cultures of Aspergillus niger KCU 520 in a continuous flow horizontal bioreactor is described. The citric acid productivity was dependent on the dilution rate with an optimum value of 0.015/h. Presaturation of fermentation medium with sterile air, in addition to surface aeration, before feeding into the bioreactor enhanced the citric acid productivity. The highest productivity, citric acid product concentration and yield obtained were 1.7 kg M–3h–1, 110kg M–3 and 91% respectively. The cultures were continuously used for 30 days without any apparent loss in citric acid productivity. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|