Illustrative image only. Actual product may vary.Soy Peptone SA2
- Category
- Peptones & Protein Hydrolysates
- Pack sizes
- 500 g · 5 kg · 25 kg
- Raw material
- Soy
Data updated：2026-11-06
- Allergens
- Soy, Gluten
Overview
Soy Peptone SA2 is a soy-derived peptone, used as a nitrogen and growth-factor source in culture media. Contains soy and gluten allergens. Supplied by STBIO MEDIA with a COA for every batch; samples and specifications are available on request.
How soy peptone grades differ
Soy peptone is enzymatically hydrolysed soy protein, the plant nitrogen source in TSB and other general formulations, and the most common replacement for meat peptones. Grades in a range differ in degree of hydrolysis (amino-to-total nitrogen ratio), molecular weight distribution, carbohydrate content and clarity: more hydrolysed grades are taken up faster and suit start-up and high-density fermentation, less hydrolysed grades carry more peptides and release nitrogen longer. For cell culture choose a grade labelled clear or ultrafiltered. Soy is a declarable allergen; non-GMO raw material is marked on the product page.
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
01Can soy peptone replace tryptone?
In fermentation and routine culture it usually can, with the advantage of no milk allergen and no animal components. Do not substitute it directly in formulations where a standard method specifies tryptone (LB, the indole test), as tryptophan content and peptide profile differ and results may shift.
02How 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.
Academic citation
Products from this range have been cited as the culture media source in a peer-reviewed study by a National Taiwan University research team:
Chan et al. (2024). Single-strain probiotics enhance growth, anti-pathogen immunity, and resistance to Nocardia seriolae in grey mullet (Mugil cephalus) via gut microbiota modulation. Animal Microbiome, 6, 67. Springer Nature.
Media attribution: Tryptone Soy Broth, MRS medium, LB broth, beef extract, peptone, yeast extract, agar (STBIO, New Taipei, Taiwan)
Read the full paperUsed in these applications
- Soy milk keeps contaminating your fermenter? Replace it with soy peptone and ISPA stable, sterile, traceable plant nitrogen source in place of in-house soy milk
- Cost-Effective Industrial & Food Fermentation Nutrient SeriesEconomical, nutritionally balanced and consistent nitrogen sources that lower medium costs in large-scale industrial and food fermentation. For food and beverage fermentation, biopesticides, biofertilizers, environmental microorganisms and industrial enzymes.
- Sustained Nitrogen Supply & Secondary Metabolite Production SeriesControlled hydrolysis and peptide molecular-weight distribution provide sustained nitrogen release to support secondary metabolite production. For Streptomyces, actinomycetes, antibiotics and other bioactive compound fermentations.
- High Spore Yield Nutrient SeriesNutrient formulations designed for the growth and sporulation of spore-forming bacteria, improving spore yield, sporulation rate and product quality. For Bacillus subtilis, B. amyloliquefaciens, B. velezensis and other biopesticide and biofertilizer strains.