Cellulase and xylanase productions by isolated Amazon Bacillus strains using soybean industrial residue based solid-state cultivation
By J. X. Heck, P. Hertz, M. Ayub. 2002
138 citations recorded by the source corpus.
In Brazil, a large amount of a fibrous residue is generated as result of soybean ( Glycine max) protein production. This material, which is rich in hemicellulose and cellulose, can be used in solid state cultivations for the production of valuable metabolites and enzymes. In this work, we studied the bioconversion of this residue by bacteria strains isolated from water and soil collected in the Amazon region. Five strains among 87 isolated bacteria selected for their ability to produce either celullases or xylanases were cultivated on the aforementioned residue. From strain BL62, identified as Bacillus subtilis, it was obtained a preparation showing the highest specific cellulase activity, 1.08 UI/mg protein within 24 hours of growth. Concerning xylanase, the isolate BL53, also identified as Bacillus subtilis, showed the highest specific activity for this enzyme, 5.19 UI/mg protein within 72 hours of cultivation. It has also been observed the production of proteases that were associated with the loss of cellulase and xylanase activities. These results indicated that the selected microorganisms, and the cultivation process, have great biotechnological potential.
Subfields: Biomedical Engineering, Biotechnology, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/eae3cb9a52d22bd9cc1047e19097f9bd88ab43f7
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Citations in the corpus
- Cellulase Production from Species of Fungi and Bacteria from Agricultural Wastes and Its Utilization in Industry: A Review (2016, background): “Many cellulase producing fungi including Trichoderma, penicillium, Botrytis neurospora [7] [23] genra Aspergilli [8] [24] Aspergillus niger and Aspergillus terreus, Rhizopus stolonifer [9] [25], Fusarium oxysporum [10] [26] are suitable for bioprocessing.”
- Optimization of fermentation conditions for cellulases production by Bacillus licheniformis MVS1 and Bacillus sp. MVS3 isolated from Indian hot spring (2012, background): “Cellulose, the most abundant organic source of feed, fuel and chemicals (Spano et al. 1975) consists of glucose units linked by β-1,4glycosidic bonds in a linear mode (Heck et al. 2002).”