Illustrative image only. Actual product may vary.Sporulation Medium 21110
Sporulation Medium 21110 is manufactured by blending peptone, polysorbate 80, paselli excel, and dextrose together.
- Category
- Dehydrated Culture Media
- Pack sizes
- 500 g · 5 kg · 25 kg
Data updated：2026-11-06
Overview
Sporulation Medium 21110 is STBIO's dedicated medium for Bacillus sporulation, for probiotic, biofertilizer and biopesticide processes whose product is the spore: cells first multiply under rich conditions and are then driven to complete sporulation, raising spore yield and robustness. It is formulated from peptone, polysorbate 80, a starch derivative and glucose; the exact composition is proprietary. Contact us to discuss suitable strains, dosage and scale-up experience.
What a sporulation medium is for
For Bacillus subtilis, B. natto, B. coagulans and other probiotic, biofertilizer and biopesticide strains, the active ingredient is the spore rather than the vegetative cell, so product value depends on spore count and conversion rate. Too rich a medium gives vegetative growth without sporulation; too lean a medium lowers the total count. A sporulation medium lets the culture multiply fully early on and then shift into sporulation at the right point. STBIO's sporulation range is designed around this, with the carbon-to-nitrogen ratio and the trace minerals sporulation requires built into the formulation. A range of soy and yeast peptones is also available for formulating your own production medium.
Product highlights
- Available in 500 g / 5 kg / 25 kg, from laboratory to industrial scale
- COA, specification sheet, and technical data sheet available; samples on request
- Manufactured in Taiwan with reliable supply
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.
02Can the formulation be adjusted for our strain or fermenter scale?
Yes. Sporulation conditions differ from strain to strain, and the formulation can be adjusted to your strain and fermenter scale. Share your strain and current fermentation conditions with us to discuss, or request a sample to compare first.
03Which organisms is it suitable for?
B. subtilis. See the cultural response table and the specification sheet.
04How do I request a bulk quotation, and can you provide a COA?
Yes. This product is available in 500 g, 5 kg, 25 kg. Tell us your application and volume when requesting a quotation; we reply within one working day and can supply the COA, specification sheet, and technical data sheet.