Bacterial cellulase from the intestinal tract of the sugarcane borer.

Autor: Barbosa KL; Federal University of Alagoas, Institute of Chemistry and Biotechnology, Campus Maceió, 57072-900 Maceió, AL, Brazil. Electronic address: kledsonlopesb@gmail.com., Malta VRDS; Federal University of Alagoas, Institute of Chemistry and Biotechnology, Campus Maceió, 57072-900 Maceió, AL, Brazil., Machado SS; Federal University of Alagoas, Institute of Chemistry and Biotechnology, Campus Maceió, 57072-900 Maceió, AL, Brazil., Leal Junior GA; Federal University of Alagoas, Center of Agrarian Sciences, Campus Rio Largo, 57100-000 Rio Largo, AL, Brazil., da Silva APV; Federal University of Alagoas, Center for Technology, Campus Maceió, 57072-900 Maceió, AL, Brazil., Almeida RMRG; Federal University of Alagoas, Center for Technology, Campus Maceió, 57072-900 Maceió, AL, Brazil., da Luz JMR; Federal University of Alagoas, Institute of Pharmaceutical Science, Postgraduate Multicenter Program of Biochemistry and Molecular Biology, Campus Maceió, 57072-900 Maceió, AL, Brazil.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2020 Oct 15; Vol. 161, pp. 441-448. Date of Electronic Publication: 2020 Jun 08.
DOI: 10.1016/j.ijbiomac.2020.06.042
Abstrakt: Cellulolytic enzymes have wide use in several industrial segments (e.g. biofuels, pulp and paper, food, and cosmetics). However, one of the challenges is their large-scale production with high specific activity to eliminate the dependence of the purchase of enzymatic cocktails produced by commercial parties. The aims of this study were (1) isolation, selection, and partial characterization of bacterial cellulases present in the intestinal tract of the sugarcane borer and (2) to identify cellulase-producing bacteria by analyzing the 16S rDNA gene. Cellulase production and purification assays resulted in similar electrophoretic profiles between four bacterial strains. These strains were identified as Klebsiella pneumoniae, Klebsiella sp., and Bacillus sp. K. pneumoniae was the main cellulase-producing microorganism. Our results show the possibility of finding cellulolytic microorganisms that inhabit the gut of herbivorous animals, especially those that are predators of important crops of economic value. Furthermore, K. pneumoniae cellulase is of medical importance. In hospitals, health professionals, hospital technicians, patients and visitors wear clothes containing cellulose. Thus, K. pneumoniae within hospitals can contaminate these clothes and be spread to the environment. In that case, it would be important for the hospital's chemical sterilization products to have at least one cellulase inhibitor.
Competing Interests: Declaration of competing interest The authors declare that there is no conflict of interest.
(Copyright © 2020. Published by Elsevier B.V.)
Databáze: MEDLINE
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