China Tryptone (Casein) Suppliers & Factory – High-Quality Pancreatin Digest for Biological Fermentation

Tryptone, also known as pancreatic digest of casein, is a premium nutrient ideal for various applications requiring trypsin hydrolysate in culture media. Sourced from high-quality casein derived from fresh milk, this fine light yellow powder undergoes rigorous purification and enzymatic hydrolysis, ensuring a rich profile of free amino acids, particularly a high concentration of tryptophan. Its balanced nutritional composition and stable physical and chemical properties make it an essential nitrogen source for promoting microbial growth and metabolic reproduction, As a core ingredient in the formulation of microbial culture media, tryptone is widely utilized across industries such as biological fermentation, biopharmaceuticals, microbiological testing, and laboratory research. It plays a critical role in bacterial culture, strain isolation, and microbial cultivation to meet various nutritional demands, As a leading supplier in China, our factory is committed to providing high-quality tryptone that meets the rigorous standards of industry professionals, ensuring that you have the best resources for your scientific and industrial needs. Choose our tryptone for your research and production applications for reliable results

Product Description

🔬 Quality Standards

Sensory Index

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

This premium tryptone (casein) serves as a key component of casein tryptone media for microbial sterility testing. In industrial fermentation, it acts as an essential nitrogen source to support microbial growth and metabolism. It is widely used in producing antibiotics, extracellular proteins, interferon and diphtheria toxoid. With rich amino acids and stable properties, it optimizes culture conditions, boosts strain activity and ensures steady quality in biopharmaceutical production.
  • Microbial Sterility Testing
  • Industrial Fermentation
  • Antibiotic Production
  • Extracellular Proteins
  • Interferon
  • Diphtheria Toxoid

📋 Usage

⚗️
Fully dissolved and sterilized before use.

📦 Packaging

🗃️
Compound Paper Bag
25 kg / bag — Standard bulk packaging for industrial use.
🪣
Cardboard Bucket
Available for pharmaceutical-grade products as an alternative bulk option.
🧴
Plastic Bottle (Reagent Grade)
250 g plastic bottle, or customized measurement packaging & OEM available.

Frequently Asked Questions

Q What is tryptone (casein) and what is it derived from?
Tryptone (casein) is a hydrolysate derived from casein, the primary protein found in milk. It is produced through enzymatic digestion, yielding a rich mixture of peptides and amino acids widely used in microbiological and biopharmaceutical applications.
Q What are the main differences between pharmaceutical grade and reagent grade tryptone?
Pharmaceutical grade tryptone has a total nitrogen content of ≥8.0% and is suitable for use in sterility testing and biopharmaceutical fermentation. Reagent grade has a higher total nitrogen content of ≥12.0%, and requires pellucid solubility in both acid and alkaline high-pressure conditions, making it ideal for more demanding laboratory applications.
Q Can the product specifications be customized to meet specific requirements?
Yes. While the physicochemical index represents our general specification, we offer full customization of product parameters to meet individual customer requirements. OEM packaging is also available upon request.
Q How should tryptone (casein) be prepared before use?
The product must be fully dissolved in the appropriate solvent and sterilized prior to use. This ensures optimal performance in culture media preparation and fermentation processes.
Q What packaging options are available for bulk orders?
Bulk orders are available in compound paper bags (25 kg/bag) or cardboard buckets. Reagent-grade products are packaged in 250 g plastic bottles. Custom measurement packaging and OEM solutions are also offered to meet specific customer needs.
Q In which biopharmaceutical production processes is this tryptone commonly used?
This tryptone is widely applied in the production of antibiotics, extracellular proteins, interferon, and diphtheria toxoid. Its rich amino acid profile and stable physicochemical properties make it a reliable nitrogen source for optimizing microbial culture conditions and maintaining consistent product quality in biopharmaceutical manufacturing.

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