Why can Bacillus subtilis be widely used?

Why can Bacillus subtilis be widely used?
Bacillus subtilis is the most widely used microbial agent, with a fast growth rate and relatively low nutritional requirements. It can efficiently secrete many proteins and metabolites, and does not produce toxins. It is a non pathogenic and safe microbial strain.
Characteristics of Bacillus subtilis:
1. Fast reproduction speed and simple nutritional requirements.
Bacillus subtilis reproduces rapidly under suitable temperature conditions and has strong nutritional and oxygen competitive advantages. Its colonization and reproduction speed is faster, more than 8-12 times faster than other pathogens, and it can quickly form a microecological environment conducive to crop growth.
2. Non toxic and pollution-free, environmentally friendly, and harmless to humans and animals.
Bacillus subtilis is a beneficial type of Bacillus that primarily propagates through fermentation. It is a completely non-toxic and pollution-free biological agent that is beneficial to both humans and animals, inhibiting the growth and reproduction of harmful bacteria.
3. Wide adaptability
Bacillus subtilis has two growth stages: spore dormancy and reproductive growth. When the environment is harsh and nutrient deficient, it enters the spore dormancy period. At this time, Bacillus subtilis has good stability, resistance to oxidation, compression, and high temperature, and can withstand high temperatures of 60 ° C for a long time. It can survive for 20 minutes at a temperature of 120 ° C, making it currently the most adaptable beneficial microbial strain; When the environment is suitable and the nutrition is sufficient, the spores enter the reproductive growth period and grow back into Bacillus subtilis.
4. Has extremely strong antibacterial activity and stress resistance
After activation, Bacillus subtilis produces antibacterial substances such as Bacillus subtilis, polymyxin, nystatin, and short peptide, which prevent the proliferation and growth of harmful bacteria; Bacillus subtilis rapidly consumes free oxygen in the environment, promotes the growth of beneficial anaerobic bacteria, and produces organic acids such as lactic acid, reducing environmental pH and indirectly inhibiting the growth of other pathogenic bacteria; Bacillus subtilis has strong activity in enzymes such as amylase, protease, lipase, cellulase, etc. It quickly decomposes and utilizes various substances in the environment such as pectin, fructose, starch, and protein to break down tryptophan and form indole, significantly improving stress resistance.
In addition, Bacillus subtilis has a strong stimulating effect on soil respiration and can also promote the synthesis of vitamins and other substances, which is simple and convenient to use.
Therefore, Bacillus subtilis has become the most widely used microbial strain in various fields such as agriculture, aquaculture, aquaculture, and medicine.