Soy Peptone Yeast Extract Feeding Medium(Mg²⁺ Supplemented)
Soy Peptone Yeast Extract Feeding Medium (Mg²⁺ Supplemented) is used for fed-batch fermentation of Escherichia coli, nitrogen supplementation during microbial fermentation, recombinant protein expression processes, biomass production in bacterial cultures, and nutrient feeding during scale-up fermentation.
- Category
- Dehydrated Culture Media
- Pack sizes
- 500 g · 5 kg · 25 kg
- Certifications
- Halal
Data updated：2026-11-06
- Shelf life
- When stored in sealed containers at 10-30°C in dry and clean conditions, the shelf life is 3 years.
- Allergens
- Soy
Overview
Principle
Soy Peptone Yeast Extract Feeding Medium (Mg²⁺ supplemented) is a nutrient-rich complex feed formulation designed for use in Escherichia coli fermentation processes. The medium provides readily available nitrogen sources, growth factors, and essential cofactors to support sustained microbial growth and metabolic activity during fed-batch or nutrient supplementation stages. Soy peptone serves as a primary source of peptides and amino acids, supplying organic nitrogen necessary for cellular protein synthesis and biomass formation. Yeast extract provides essential vitamins, nucleotides, trace elements, and additional growth-promoting factors that enhance bacterial metabolism and overall culture performance. Magnesium sulfate (MgSO₄) is included as a source of magnesium ions (Mg²⁺), which are critical cofactors for many enzymatic reactions involved in DNA replication, transcription, and protein synthesis.
Product highlights
- Halal certified, suitable for the Malaysian, Indonesian, and Middle Eastern markets
- 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
01How should it be stored, and what is the shelf life?
When stored in sealed containers at 10-30°C in dry and clean conditions, the shelf life is 3 years.
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 paper