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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Bioeng. Biotechnol. | doi: 10.3389/fbioe.2019.00223

Understanding the effect of impeller configurations on pullulan production by Aureobasidum pullulans RBF 4A3

  • 1Institute of Microbial Technology (CSIR), India

Mass transfer is one of the important factors in viscous fermentation processes, like production of pullulan. Impellers play a crucial role in maintaining homogeneity and better mass transfer conditions during the fermentation process.The present study attempted to evaluate the efficiency of impellers with diverse configurations during the pullulan fermentation. Initially, mass transfer coefficient of ten selected impellers were evaluated in aqueous system. Among these, three impellers namely Single Helical Ribbon, Rushton Turbine and Smith turbine impeller were found to be better and were further employed in pullulan fermentation process. The results suggested thatSingle Helical Ribbon impeller was able to provide 24% higher pullulan production as compared to Rushton Turbine and Smith turbine impellers. Single Helical Ribbon was able to maintain the critical demand of dissolved oxygen in fermentation broth. Therefore, it may be commented that Single Helical Ribbon impeller configuration is suitable for higher production of pullulan during the fermentation process.

Keywords: mass transfer, Pullulan, impeller, Aureobasidum pullulans, Exopolysaccaharide

Received: 26 Jun 2019; Accepted: 29 Aug 2019.

Copyright: © 2019 Kumar, Katoch, Prasad and Roy Choudhury. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Dr. Anirban Roy Choudhury, Institute of Microbial Technology (CSIR), Chandigarh, 160036, Punjab, India,