Assessment of Keratinase and Other Hydrolytic Enzymes in Thermophilic Bacteria Isolated from Geothermal Areas in Patagonia Argentina

Thermophilic aerobic bacteria were isolated from two geothermal areas in Neuquén province using two different enrichment methods and a total of 30 isolates were obtained. From chicken feather enrichment cultures, strains affiliated to Bacillus cytotoxicus and Bacillus licheniformis were isolated and...

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Published inGeomicrobiology journal Vol. 35; no. 2; pp. 156 - 165
Main Authors Cavello, I., Urbieta, M. S., Segretin, A. B., Giaveno, A., Cavalitto, S., Donati, E. R.
Format Journal Article
LanguageEnglish
Published New York Taylor & Francis 07.02.2018
Taylor & Francis Ltd
Subjects
Aerobic bacteria
Bacteria
Biodiversity
Cellulase
Cultures
Enrichment
Enzymes
Extracellular
Geothermal areas
Inulinase
Keratinase
keratinolytic microorganisms
Microbiological strains
Pectinase
Thermophilic bacteria
Xylanase
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Summary:Thermophilic aerobic bacteria were isolated from two geothermal areas in Neuquén province using two different enrichment methods and a total of 30 isolates were obtained. From chicken feather enrichment cultures, strains affiliated to Bacillus cytotoxicus and Bacillus licheniformis were isolated and all of them demonstrated the capability to degrade completely chicken feather. A preliminary research on biotechnological enzymes' potential demonstrated that all the isolates displayed at least one of the extracellular hydrolytic enzymes tested. Most of the isolates showed protease, inulinase and/or pectinase activities, while cellulase and xylanase activities were less common. In light of these findings, geothermal areas of Argentina may be considered as a potential source of thermophilic bacteria able to produce many industrially relevant enzymes.
ISSN:0149-0451
1521-0529
DOI:10.1080/01490451.2017.1339144