食品科学 ›› 2013, Vol. 34 ›› Issue (21): 274-277.doi: 10.7506/spkx1002-6630-201321055

• 生物工程 • 上一篇    下一篇

一株长白山温泉高温菌的分离鉴定

刘景圣,许志超,刘回民,蔡 丹,郑明珠   

  1. 吉林农业大学食品科学与工程学院,小麦和玉米深加工国家工程实验室,吉林 长春 130118
  • 收稿日期:2013-02-14 修回日期:2013-10-11 出版日期:2013-11-15 发布日期:2013-10-28
  • 通讯作者: 刘景圣 E-mail:liujs1007@vip.sina.com.cn

Isolation and Identification of a Thermophilic Bacterium from Hot Spring in Changbai Mountain

LIU Jing-sheng,XU Zhi-chao,LIU Hui-min,CAI Dan,ZHENG Ming-zhu   

  1. National Engineering Laboratory on Wheat and Corn Deep Processing, College of Food Science and Engineering,
    Jilin Agricultural University, Changchun 130118, China
  • Received:2013-02-14 Revised:2013-10-11 Online:2013-11-15 Published:2013-10-28
  • Contact: LIU Jing-sheng E-mail:liujs1007@vip.sina.com.cn

摘要:

从长白山温泉泥样中分离纯化一株高温菌T1,检测其生理生化特性。结果表明:菌株T1为革兰氏阳性杆菌,无鞭毛,内生芽孢,最适生长温度65℃,pH6.5,分别能以葡萄糖、麦芽糖等作为唯一碳源生长;其16SrRNA基因序列与Geobacillus stearothermophilus的同源性为99%,二者G+C含量相差7.5%,初步鉴定菌株T1可能是Geobacillus属的一个新种。

关键词: 高温菌T1, 16S rRNA, 分离鉴定

Abstract:

In this work, physiological and biochemical properties of a thermophilic bacterium named T1 isolated from hot
springs in Changbai Mountain were analyzed. The results showed that the cells were Gram-positive, and non-motile rods.
The optimal growth temperature was 65 ℃ and pH 6.5. The strain used glucose, maltose as carbon and energy sources. The
16S rRNA sequence analysis showed that the sequence shared 99% similarity with that of Geobacillus stearothermophilus.
The G + C content of T1 was 7.5%, which was less than that of Geobacillus stearothermophilus. Preliminary identification
of the strain was a member of Geobacillus stearothermophilus.

Key words: thermophilic bacterium, 16S rRNA, isolation and identification

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