| 摘要 |
Thermus aquaticus biovar. Nov. SK542 (FERM BP-3382) is an absolute aerobic bacteria. It grows at temperature limit of 40 DEG -82 DEG C. in a normal concentration medium, but its best growth is achieved at 72 DEG -76 DEG C. It produces protein decomposing enzymes functional at a temperature of 75 DEG -85 DEG C. and active in a wide pH range of 4.0-11.3, and a yellow pigment of carotenoid groups. A method for improving the quality of soil comprising applying to the soil a biologically pure culture of an absolute aerobic bacterium Thermus aquaticus biovar. nov. SK542 (FERM BP-3382) having a growth temperature limit of 40 DEG -82 DEG C. in a normal concentration medium, a growth optimum temperature of 72 DEG -76 DEG C., and producing protein decomposing enzymes functional at temperature range of 75 DEG -85 DEG C. and being active in a wide pH range of 4.0-11.3, and a yellow pigment of carotenoid.
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