Acid tolerant multicomponent bacterial enzymes production enhancement under the influence of corn cob waste substrate

Neha Srivastava*, Rajeev Singh, Akbar Mohammad, Dan Bahadur Pal, Irfan Ahmad, Mohammad Mahtab Alam, P. K. Mishra, Vijai Kumar Gupta

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Cellulase enzymes have wide range of industrial application, but high production cost and relatively low efficiency are the main issues, which are needed to resolve. Substrate is known as the main contributor which can bring down the production cost of these enzymes at large scale. Therefore, in the present study, corn cob (Cc) waste has been employed as a potential substrate to produce efficient and good amount of cellulase using the bacterial strain Bacillus subtilis. Under the influence of optimal parameters while using the optimum concentration of Cc (7.0 g), maximum 12 IU/gds FP, 97 IU/gds BGL and 129 IU/gds EG have been recorded. Additionally, crude enzyme showed maximum FP activity of 14 IU/gds using 1.0 g/L peptone employed as the optimum organic nitrogen source. The bacterial cellulase exhibits temperature tolerance ability at 55 °C, and retains its half-life activity for 5 h and pH tolerance at pH 7.0 up to 55% of the relative activity. The results recorded in the present study may have potential for the large-scale and low-cost bacterial cellulase production using cellulose rich substrate e.g. Cc waste that can be vital for numerous industrial applications.

Original languageEnglish
Article number109698
JournalInternational Journal of Food Microbiology
Volume373
Early online date10 May 2022
DOIs
Publication statusFirst published - 10 May 2022

Bibliographical note

Funding Information:
Author N.S. and P.K.M. thankfully acknowledges Department of Chemical Engineering and Technology, IIT (BHU) Varanasi for providing the experimental facilities. The authors are grateful to Scientific Research Deanship at King Khalid University, Abha, Saudi Arabia for their financial support through Large Research Group Project under grant number (RGP.02-87-43). Credit is given to https://pixabay.com for free images to design graphical abstract. V.K.G. would like to acknowledge the institutional funding sources supported by the SRUC, UK for research and development.

Funding Information:
Author N.S. and P.K.M. thankfully acknowledges Department of Chemical Engineering and Technology, IIT (BHU) Varanasi for providing the experimental facilities. The authors are grateful to Scientific Research Deanship at King Khalid University , Abha, Saudi Arabia for their financial support through Large Research Group Project under grant number ( RGP.02-87-43 ). Credit is given to https://pixabay.com for free images to design graphical abstract. V.K.G. would like to acknowledge the institutional funding sources supported by the SRUC, UK for research and development.

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

  • bacteria
  • Cellulases
  • Cellulose
  • Corn cob
  • pH tolerance
  • Thermal stability

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