Illustrative image only. Actual product may vary.Casein Meat Peptone E2
- Category
- Peptones & Protein Hydrolysates
- Pack sizes
- 500 g · 5 kg · 25 kg
- Raw material
- Casein
Data updated：2026-11-06
Overview
Casein Meat Peptone E2 is a casein-derived peptone, used as a nitrogen and growth-factor source in culture media. It is suited to the cultivation of lactic acid bacteria. Contains milk allergen. Supplied by STBIO MEDIA with a COA for every batch; samples and specifications are available on request.
Beef peptone or beef extract
Beef peptone is enzymatically hydrolysed meat protein, mainly peptides, and the main nitrogen source in nutrient media. Beef extract is the water-soluble extract of meat, naturally containing vitamins, minerals and small nitrogenous molecules; it is used in small amounts mainly for growth factors. Fastidious organisms and nutrient media often use both. Where Halal or bovine-free material is required, look at soy, yeast or plant peptones instead.
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
01Which organisms is it suitable for?
Lactic acid bacteria. See the cultural response table and the specification sheet.
02Is there a Halal certified version of this product?
Yes. This is the standard version; a Halal certified version is also produced from food-grade raw materials with Halal documentation, for compliant sourcing in Malaysia, Indonesia, and the Middle East.
03How 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
- Targeted Nutrient Booster SeriesTargeted supplements of amino acids, B vitamins, nucleotides and trace minerals matched to the organism and fermentation stage, resolving nutrient limitation, slow growth and poor yield.
- Recombinant Protein Expression Nutrient SeriesAmino acids, peptides and growth factors that support recombinant protein expression and soluble protein yield. For recombinant E. coli, vaccine antigens, industrial enzymes and biopharmaceutical production.