China Tryptone (Casein) by China Suppliers - Premium Pancreatin Digest for Culture Medium from Leading Factory Manufacturers, Manufacturer

Tryptone, also known as pancreatic digest of casein, is a premium ingredient specifically designed for applications requiring trypsin hydrolysate or casein pancreatin in culture media formulations. This fine, light yellow powder is derived from high-quality casein, a nutritious protein obtained from fresh milk through advanced purification, enzymatic hydrolysis, and refined filtration processes. Rich in free amino acids, Tryptone boasts a notably high tryptophan content, ensuring a balanced nutritional profile with stable physical and chemical properties, As a vital nitrogen source, Tryptone significantly enhances microbial growth and metabolic reproduction, making it an essential raw material for various microbial culture media. It has widespread applications in biological fermentation, biopharmaceuticals, microbiological testing, and laboratory research. Our product is crucial for bacterial culture, strain isolation, and microbial cultivation to meet diverse nutritional requirements in both industrial and scientific environments, As a leading supplier and factory in China, we are committed to providing top-quality Tryptone that meets the highest standards for your research and industrial needs. Trust us for your microbial culture media requirements

Product Description

Quality Standards
Sensory Index
Items Requirements
Morphology Powder, no caking
Color Light yellow or milky white powder
Odor Endemic taste and odor of product, no other peculiar smell
Impurity No normal visible extraneous impurity
Physicochemical Index
Item Pharmaceutical Grade Reagent Grade
Total nitrogen (on DM) % ≥8.0% ≥12.0%
Amino nitrogen (on DM) % ≥2.5% ≥3.0%
Ash (on DM) % ≤10.0% ≤10.0%
Moisture % ≤6.0% ≤6.0%
PH (2% solution) 5.0–8.0
Acid solution & alkalescence high-pressure Pellucid
Solubility (2% solution) Pellucid
💡 The physicochemical index is general specification but we can customize product according to the requirements of customer.
Application
  • Serves as a key component of casein tryptone media for microbial sterility testing.
  • Acts as an essential nitrogen source in industrial fermentation to support microbial growth and metabolism.
  • Widely used in producing antibiotics, extracellular proteins, interferon, and diphtheria toxoid.
  • Rich in amino acids with stable properties — optimizes culture conditions and boosts strain activity.
  • Ensures steady quality in biopharmaceutical production.
Usage
⚗️
Fully dissolved and sterilized before use.
Packaging
📦
Compound Paper Bag with 25kg/bag or Cardboard Bucket.
Reagent-grade products are packaged with 250g plastic bottle, or can be packed according to the measurement requirements of the customer. OEM packaging is also available.
Frequently Asked Questions
Q What is tryptone (casein) and what is it made from?
Tryptone (casein) is a pancreatic digest of casein protein derived from milk. It is a rich source of peptides and amino acids commonly used as a nitrogen source in microbiological culture media and industrial fermentation processes.
Q What is the difference between pharmaceutical grade and reagent grade tryptone?
Pharmaceutical grade tryptone meets specifications for use in drug manufacturing and sterility testing, with a total nitrogen content of ≥8.0%. Reagent grade offers higher nitrogen content (≥12.0%) and stricter solubility/clarity requirements, making it suitable for laboratory and analytical applications.
Q Can the product specifications be customized?
Yes. While the physicochemical index provided represents our general specification, we are able to customize the product to meet specific customer requirements. OEM packaging options are also available upon request.
Q What are the main applications of this tryptone product?
This tryptone is widely used in microbial sterility testing, industrial fermentation, and biopharmaceutical production. Key applications include the manufacture of antibiotics, extracellular proteins, interferon, and diphtheria toxoid.
Q How should tryptone be prepared before use?
Tryptone should be fully dissolved in the appropriate volume of water and then sterilized before use. This ensures consistent performance and prevents contamination in sensitive microbiological or fermentation applications.
Q What packaging options are available for this product?
The standard packaging options include a compound paper bag (25kg/bag) or a cardboard bucket for bulk orders. Reagent-grade products are available in 250g plastic bottles. Custom packaging quantities and OEM packaging solutions can be arranged based on customer needs.

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