Wholesale Tryptone (Casein) Pancreatin Digest for Microbial Cultures - China Suppliers & Factory Quality Assured Manufacturer, Suppliers

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Tryptone, also known as pancreatic digest of casein, is a premium nutrient source designed for applications requiring casein pancreatin or trypsin hydrolysate in culture medium formulations. This light yellow powder is meticulously processed from high-quality casein, a nutritious protein extracted from fresh milk using advanced purification, enzymatic hydrolysis, and refined filtration methods. Rich in a broad spectrum of free amino acids, tryptone features a particularly high concentration of tryptophan and offers a balanced nutritional profile with stable physical and chemical properties. As an essential nitrogen source, it significantly promotes microbial growth and metabolic reproduction, making it a vital raw material in the preparation of diverse microbial culture media. Our Tryptone is widely utilized in biological fermentation, biopharmaceuticals, microbiological testing, and laboratory research. As a leading supplier in China, our factory ensures that this product is indispensable for bacterial cultures, strain isolation, and microbial cultivation across various nutritional demands in industrial and scientific applications.

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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
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.

Usage
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Preparation: Fully dissolved and sterilized before use.

Packaging
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Standard Packaging
Compound Paper Bag with 25kg/bag or Cardboard Bucket.
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Reagent Grade Packaging
250g plastic bottle, or packed according to customer measurement requirements. OEM packaging is also available.

Frequently Asked Questions
What is tryptone (casein) and what is it made from?
Tryptone (casein) is a hydrolyzed protein product derived from casein, the primary protein found in milk. It is produced through enzymatic or acid hydrolysis, resulting in a rich mixture of peptides and amino acids widely used in microbiological and biopharmaceutical applications.
What is the difference between Pharmaceutical Grade and Reagent Grade tryptone?
Pharmaceutical Grade tryptone meets the specifications required for use in drug manufacturing and sterility testing, with a total nitrogen content of ≥8.0%. Reagent Grade tryptone has a higher total nitrogen content of ≥12.0% and requires pellucid solubility, making it suitable for more precise laboratory and analytical applications.
What are the main applications of this tryptone product?
This tryptone is primarily used as a key component in casein tryptone media for microbial sterility testing. It also serves as an essential nitrogen source in industrial fermentation for producing antibiotics, extracellular proteins, interferon, and diphtheria toxoid in biopharmaceutical manufacturing.
How should tryptone be prepared before use?
Tryptone should be fully dissolved in the appropriate volume of water or buffer solution and then sterilized before use. Proper dissolution ensures consistent performance and prevents contamination in sensitive microbiological or fermentation processes.
Can the product specifications be customized to meet specific requirements?
Yes. While the physicochemical index represents the general specification, the product can be customized according to the specific requirements of the customer, including adjustments to nitrogen content, moisture levels, and other key parameters.
What packaging options are available, and is OEM packaging supported?
Standard products are packaged in compound paper bags (25kg/bag) or cardboard buckets. Reagent Grade products are available in 250g plastic bottles. Custom packaging based on customer measurement requirements and OEM packaging are also supported upon request.

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