[从地理位置遥远的土壤和水中分离出的耐高温石油降解细菌]。

Ya A Delegan, A A Vetrova, V N Akimov, M A Titok, A E Filonov, A M Boronin
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引用次数: 0

摘要

从俄罗斯、哈萨克斯坦和南极的土壤和水样中分离出石油降解细菌;86个菌株中有13个被证明是耐热的。这些细菌利用45-50℃的原油;它们的生长最适温度(35 ~ 37℃)和生长范围(20 ~ 53℃)与嗜酸性细菌不同。耐热菌株被鉴定为红球菌属和戈登属的代表。结果表明,在24°C和45°C时,它们降解石油产品的能力没有差异。在45℃条件下,菌株Rhodococcus sp. Par7和Gordonia sp. 1D在14天内分别利用了14%和20%的油脂。所有分离的耐热菌均在含3% NaCl的培养基中生长;霉菌戈登尼亚1B和戈登尼亚sp. 1D培养基的NaCl含量高达10%。细菌G. amicalis和红红球菌能够在更高(高达50°C)的温度下利用原油和单个碳氢化合物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Thermotolerant oil-degrading bacteria isolated from soil and water of geographically distant regions].

Oil-degrading bacteria were isolated from soil and water samples taken in Russia, Kazakhstan, and the Antarctic; 13 of 86 strains proved to be thermotolerant. These bacteria utilized crude oil at 45–50°C; their growth optimum (35–37°C) and range (20–53°C) differ from those of mesophilic bacteria. Thermotolerant strains were identified as representatives of the genera Rhodococcus and Gordonia. It was shown that their ability to degrade petroleum products does not differ at 24 and 45°C. The strains Rhodococcus sp. Par7 and Gordonia sp. 1D utilized 14 and 20% of the oil, respectively, in 14 days at 45°C. All of the isolated thermotolerant bacteria grew in a medium containing 3% NaCl; the medium for the strains Gordonia amicalis 1B and Gordonia sp. 1D contained up to 10% NaCl. The bacteria G. amicalis and Rhodococcus erythropolis were able to utilize crude oil and individual hydrocarbons at higher (up to 50°C) temperatures.

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