Bacillus fermentation and sporulation
Dedicated sporulation media and fermentation nitrogen sources for higher spore conversion
THE SITUATION AND THE PAIN POINTS
For Bacillus subtilis, B. natto, B. coagulans, and other probiotic or biopesticide strains, product value depends on spore count and conversion rate. Too rich a medium gives vegetative growth without sporulation; too lean lowers the total count. The carbon-to-nitrogen ratio and trace minerals both matter.
OUR APPROACH
STBIO offers sporulation media and fermentation-optimised formulations designed for spore formers, using soy peptone as the plant nitrogen source with a fast-and-slow carbon supply and a dispersant to balance early growth against late sporulation. A range of soy and yeast peptones is also available for formulating your own production medium.
- Dedicated sporulation formulations balancing cell count and spore conversion
- Plant nitrogen for Halal and vegetarian-labelled probiotic products
- Formulations adjustable to strain and fermenter scale
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Frequently asked questions
01What usually causes a low sporulation rate?
Most often the nitrogen source is excessive or carbon remains plentiful late in the run, so cells never enter starvation; other causes are insufficient manganese or other trace elements, low dissolved oxygen, or harvesting too early. Check the C:N ratio and harvest timing first.