RSM based optimization of nutritional conditions for cellulase mediated Saccharification by Bacillus cereus View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2018-05-03

AUTHORS

Fouzia Tabssum, Muhammad Irfan, Hafiz Abdullah Shakir, Javed Iqbal Qazi

ABSTRACT

Background: Cellulases are enzyme which have potential applications in various industries. Researchers are looking for potential cellulolytic bacterial strains for industrial exploitation. In this investigation, cellulase production of Bacillus cereus was explored while attacking poplar twigs. The bacterium was isolated from the gut of freshwater fish, Labeo rohita and identified by 16S rRNA gene sequencing technology. Various nutritional conditions were screened and optimized through response surface methodology. Initially, Plackett-Burman design was used for screening purpose and optimization was conducted through Box-Bhenken design. Results: The maximum cellulase production occurred at 0.5% yeast extract, 0.09% MgSO4, 0.04% peptone, 2% poplar waste biomass, initial medium pH of 9.0, and inoculum size of 2% v/v at 37 °C with agitation speed of 120 rpm for 24 h of submerged fermentation. The proposed model for optimization of cellulase production was found highly significant. The indigenously produced cellulase enzyme was employed for saccharification purpose at 50 °C for various time periods. Maximum total sugars of 31.42 mg/ml were released after 6 h of incubation at 50 °C.The efficiency of this enzyme was compared with commercial cellulase enzyme revealing significant findings. Conclusion: These results suggested potential utilization of this strain in biofuel industry. More... »

PAGES

7

Identifiers

URI

http://scigraph.springernature.com/pub.10.1186/s13036-018-0097-4

DOI

http://dx.doi.org/10.1186/s13036-018-0097-4

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1103784853

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/29755582


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