Characterization of a hyperthermophilic sulphur-oxidizing biofilm produced by archaea isolated from a hot spring

详细信息    查看全文

• 作者：Emky Valdebenito-Rolack^a ; ^{emkyvaldebenito@udec.cl} ; Nathaly Ruiz-Tagle^a ; Leslie Abarzú ; a^a ; Germá ; n Aroca^b ; Homero Urrutia^a
• 关键词：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
• 刊名：Electronic Journal of Biotechnology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：25
• 期：Complete
• 页码：58-63
• 全文大小：692 K
• 卷排序：25

文摘

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.ResultsIn 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).ConclusionsThe results suggest that the culture M1 is useful for the biofiltration of total reduced sulphur gases at high temperatures and for other biotechnological applications.