Biological characteristics Bacillus licheniformis is a Gram-positive thermophilic bacteria common in soil, the most suitable for the growth temperature of 30 ℃, but the most suitable temperature for the enzyme secretion of 37 ℃, Bacillus licheniformis can produce many have Hot temperature stronger protease, and the ability to resist the harsh environment is relatively strong.

Bacillus licheniformis and Bacillus amyloliquefaciens recent genetic relationship between the two DNA homology in 9% to 15%. Bacillus licheniformis culture colonies were round, the surface is not smooth. Microscopic examination Strains Straight, round at both ends, spores have exercise capacity. The use of propionate is a biochemical feature of B. licheniformis. Bacillus licheniformis also has starch hydrolyzing, utilizing citrate, gelatin liquefaction, nitrate reduction, and arginine dehydratase production capacity. According to the above physiological and biochemical characteristics combined with 16Sr DNA sequence can be identified Bacillus licheniformis.