Characteristics of newly isolated Geobacillus sp. ZY-10 degrading hydrocarbons in crude oil

• Autorzy: Sun Y. , Ning Z. , Yang F. , Li X.
• Języki publikacji: EN

Abstrakty

EN

An obligately thermophilic strain ZY-10 was isolated from the crude oil in a high-temperature oilfield, which was capable of degrading heavy crude oil. Phenotypic and phylogenetic analysis demonstrated that the isolate should be grouped in the genus Geobacillus, which shared the highest similarity (99%) of the 16S rDNA sequence to Geobacillus stearothermophilus. However, the major cellular fatty acid iso-15:0 (28.55%), iso-16:0 (24.93%), iso-17:0 (23.53%) and the characteristics including indole production, tolerance to NaN₃ and carbohydrate fermentation showed some difference from the recognized species in the genus Geobacillus. The isolate could use tridecane, hexadecane, octacosane and hexatridecane as sole carbon source for cell growth, and the digesting rate of long-chain alkane was lower than that of short-chain alkane. When the isolate was cultured in the heavy crude oil supplement with inorganic salts and trace yeast extract, the concentration of short-chain alkane was significantly increased and the content of long-chain alkane was decreased, suggesting that the larger hydrocarbon components in crude oil were degraded into shorter-chain alkane. Strain ZY-10 would be useful for improving the mobility of crude oil and upgrading heavy crude oil in situ.

• Wydawca: -
• Czasopismo: Polish Journal of Microbiology
• Rocznik: 2015
• Tom: 64
• Numer: 3
• Opis fizyczny: p.253-263,fig.,ref.

Twórcy

autor

Sun Y.

• School of Biological Engineering, Dalian Polytechnic University, Dalian, PR China

autor

Ning Z.

• School of Biological Engineering, Dalian Polytechnic University, Dalian, PR China

autor

Yang F.

• School of Biological Engineering, Dalian Polytechnic University, Dalian, PR China

autor

Li X.

• School of Biological Engineering, Dalian Polytechnic University, Dalian, PR China

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