Abu-Zinada A H, Hossain A, Yonis H I, Elwan S H
Folia Microbiol (Praha). 1981;26(5):364-9. doi: 10.1007/BF02927328.
Ten thermophilic Gram-positive bacteria were isolated from various soils of Saudi Arabia. The strains are spore-forming rods belonging to the species Bacillus stearothermophilus. The cells are motile, strictly aerobic, catalase and oxidase positive. The sporangia appear to be swollen and their position varies from terminal in some to sub-terminal in others. The thermal stability of some enzymes of these bacteria was investigated; extracellular alpha-amylase appears to be very sensitive to pH and temperature. The ultrastructure of these bacteria shows specific changes in the cell wall when grown at the maximum, minimum and optimum growth temperatures, respectively.
从沙特阿拉伯的各种土壤中分离出了10株嗜热革兰氏阳性菌。这些菌株是属于嗜热脂肪芽孢杆菌的产芽孢杆菌。细胞具有运动性，严格需氧，过氧化氢酶和氧化酶呈阳性。芽孢囊似乎肿胀，其位置在一些菌株中为末端，在另一些菌株中为亚末端。对这些细菌的一些酶的热稳定性进行了研究；细胞外α-淀粉酶似乎对pH和温度非常敏感。这些细菌的超微结构显示，当分别在最高、最低和最适生长温度下生长时，细胞壁会发生特定变化。
