Characterization of a hyperthermophilic sulphur-oxidizing biofilm produced by archaea isolated from a hot spring
| Autor: | Emky Valdebenito-Rolack, Nathaly Ruiz-Tagle, Leslie Abarzúa, Germán Aroca, Homero Urrutia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Biofilms on polyethylene
Biofiltration Cellulose industries Denaturing gradient gel electrophoresis extremophile Hyperthermophile Industrial gas emissions Petroleum refinery Sulfolobus Sulphide Sulphur-oxidizing archaea Sulphur-oxidizing microorganisms Biotechnology TP248.13-248.65 Biology (General) QH301-705.5 |
| Zdroj: | Electronic Journal of Biotechnology, Vol 25, Iss C, Pp 58-63 (2017) |
| Druh dokumentu: | article |
| ISSN: | 0717-3458 |
| DOI: | 10.1016/j.ejbt.2016.11.005 |
| Popis: | Background: Sulphur-oxidizing microorganisms are widely used in the biofiltration of total reduced sulphur compounds (odorous and neurotoxic) produced by industries such as the cellulose and petrochemical industries, which include high-temperature process steps. Some hyperthermophilic microorganisms have the capability to oxidize these compounds at high temperatures (>60°C), and archaea of this group, for example, Sulfolobus metallicus, are commonly used in biofiltration technology. Results: In this study, a hyperthermophilic sulphur-oxidizing strain of archaea was isolated from a hot spring (Chillán, Chile) and designated as M1. It was identified as archaea of the genus Sulfolobus (99% homology with S. solfataricus 16S rDNA). Biofilms of this culture grown on polyethylene rings showed an elemental sulphur oxidation rate of 95.15 ± 15.39 mg S l-1 d-1, higher than the rate exhibited by the biofilm of the sulphur-oxidizing archaea S. metallicus (56.8 ± 10.91 mg l-1 d-1). Conclusions: The results suggest that the culture M1 is useful for the biofiltration of total reduced sulphur gases at high temperatures and for other biotechnological applications. |
| Databáze: | Directory of Open Access Journals |
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