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首页> 外文期刊>African Journal of Biotechnology >Thermo-aerobic bacteria from geothermal springs in Saudi Arabia
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Thermo-aerobic bacteria from geothermal springs in Saudi Arabia

机译：沙特阿拉伯地热温泉中的需氧细菌

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摘要

Biodiversity in geothermal springs in Saudi Arabia appears scanty and has not been thoroughly investigated. Geothermal springs are scattered in several areas in Saudi Arabia. Water samples were collected from ten hot springs and analyzed for different physical and chemical parameters. Fifteen isolates of thermo-aerobic bacteria were found.?Bacillus cereus, B. licheniformis, B. thermoamylovorans, Pseudomonas?sp.,Pseudomonas aeruginosa?and?Enterobacter?sp. were dominant in hot springs. Genetic relatedness indicated that?eleven?Bacillus?spp. grouped together formed several clusters within one main group with high similarity. Plastic composite support tubes (PCS) were employed to stimulate the bacterial growth at high temperatures. The optimum temperature of isolates was 60°C.?Thus,?different blend of PCS were used to enhance the growth at higher temperatures. PCS blended with 20 and 15% (w/w) of dates pits and 5% (w/w) of yeast extract stimulated the growth of?B. thermoamylovorans?at 90°C.
机译：沙特阿拉伯地热温泉中的生物多样性似乎很少，尚未进行彻底调查。地热泉散布在沙特阿拉伯的几个地区。从十个温泉中收集水样并分析不同的理化参数。发现了十五种高温需氧菌。蜡状芽孢杆菌，地衣芽孢杆菌，嗜热芽孢杆菌，假单胞菌，绿脓杆菌和肠杆菌。在温泉中占主导地位。遗传相关性表明，有11个芽孢杆菌。分组在一起，在一个主要组内形成了高度相似的几个集群。使用塑料复合支撑管（PCS）在高温下刺激细菌生长。分离株的最佳温度为60°C。因此，使用了不同的PCS共混物以提高在较高温度下的生长。 PCS掺入20％和15％（w / w）的枣核和5％（w / w）的酵母提取物刺激了βB的生长。在90°C时为热戊基戊酸酯。

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