Hydrolyzed Casein Protein Powder
Description
Hydrolyzed Casein Protein Powder – Premium Fast-Absorbing Protein Ingredient for Clinical and Performance Nutrition
Xi'an Le-Nutra Ingredients Inc specializes in producing high-purity Hydrolyzed Casein Protein Powder with an average molecular weight below 2,000 Daltons and protein content ≥90.0%. Manufactured in our 60,000㎡ GMP-certified facility with 3,000 tons annual production capacity, our enzymatically processed casein peptides deliver superior bioavailability for clinical nutrition, hypoallergenic formulations, and sports recovery applications. With 14+ years of hydrolyzed protein expertise and strict quality control systems, we ensure consistent molecular weight distribution and compliance with FDA, ISO, and Kosher standards for global nutraceutical and functional food manufacturers.

Product Specifications and Technical Parameters
Our manufacturing process guarantees precise control over hydrolysis parameters to achieve optimal peptide profiles. The following specifications demonstrate our commitment to quality and consistency:
| Item | Specification |
|---|---|
| Appearance | White to light yellow powder |
| Aqueous Solution Color | Clear and transparent |
| Protein Content | ≥90.0% |
| Average Molecular Weight | ≤2,000 Daltons |
| Total Nitrogen Content | ≥18.0g/100g |
| Water Content | ≤5.0g/100g |
| Ash Content | ≤0.5g/100g |
| Heavy Metals | <1ppm |
| Total Plate Count | <1,000 CFU/g |
| Coliforms | Negative |
| Salmonella | Negative |
| Staphylococcus | Negative |
What Makes Our Casein Peptides Unique?
Our plant employs a proprietary enzymatic hydrolysis method to hydrolyse bovine milk casein into di- and tri-peptides, converting slow-digesting casein into a fast-absorbing protein supply. This technique overcomes the main disadvantage of traditional micellar casein – delayed stomach emptying – while keeping the naturally high glutamine and branched-chain amino acid profile.
Whole casein proteins are extensively processed in the digestive system, whereas our peptides bypass long gastric proteolysis. This leads to a quick increase in plasma amino acids without the digestive pain associated with typical casein products. The controlled degree of hydrolysis enables excellent solubility at pH values between 3.0 and 7.0 and so is appropriate for acidic drinks and neutral compositions.
Core Functional Benefits for Product Development
Improved Bioavailability & Absorption
Because of its low molecular weight, it is well absorbed through the gut membrane. This rapid absorption can make your formulations more effective for clients who need instant nutritional support.
Anti-Aging and Skin Wellness Benefits
Bioactive peptides can permeate the layers of skin effectively and aid in cellular healing and collagen formation. Your cosmetic and skin care products will show better moisturising, firming and elasticity improving effects.
Bone and Joint Support
It's packed with vital amino acids to keep your connective tissue in good shape. Our ingredient is therefore ideal for joint health supplements and active ageing formulas designed to maintain mobility.
Lower Allergenicity
Extensive hydrolysis diminishes the possibility for allergic response to a great extent by breaking down the intact protein epitopes. This property is important in the development of hypoallergenic products for sensitive people.
Heat Stability for Processing
Our casein peptides do not precipitate with UHT processing, unlike many protein additives. This thermal resilience allows your formulation possibilities in ready-to-drink beverages and heat-treated products.
Industry Applications and Use Cases
Clinical & Medical Nutrition
Hydrolyzed Casein Protein Powder is utilised in healthcare institutes for enteral feeding formulas and therapeutic nutrition solutions. Patients with reduced digestive function, malabsorption problems, or those who require tube feeding benefit from the pre-digested state which decreases gastrointestinal stress and minimises osmotic consequences.
Hypoallergenic Infant Food
Our thoroughly hydrolysed casein is used as a safe protein source in formula for infants with cow’s milk protein allergy. The smaller peptides avoid allergic sensitisation and provide all of the amino acids needed for optimal growth.
Performance & Recovery Sports
High-intensity training demands elite athletes and fitness enthusiasts to get nutrients fast. You can add our quick-absorbing peptides to your sports nutrition products for intra-workout supplementation and fast post-exercise recovery, without the heavy feeling associated with standard casein.
Functional Foods and Beverages
Its high solubility and neutral taste profile makes it easy to incorporate into protein-enhanced drinks, ready-to-drink shakes, protein bars and fortified snacks. Your R&D teams can manufacture transparent protein drinks with shelf-life stability.

Skin Care and Cosmetic Formulations
Beauty brands use our casein peptides in serums, creams and anti-aging products. Its tiny molecular framework helps it penetrate the skin to aid in skin repair and hold moisture at the cellular level.
Quality Assurance and Testing Protocols
Our quality control lab utilises modern analytical methods to verify that each batch fulfils exacting criteria. We confirm constant peptide length by performing a degree of hydrolysis analysis by the OPA method. Molecular weight distribution is verified by High Performance Liquid Chromatography within desired ranges.
Sensory evaluation and amino acid profiling track hydrophobic peptide release to avoid bitterness in your end goods. Testing for heavy metals using ICP-MS guarantees compliance with international food and cosmetic safety regulations that have severe limitations on lead, arsenic, cadmium and mercury.
Microbial testing includes particular screening for Cronobacter sakazakii and other worrisome pathogens beyond normal plate counts. An ELISA test is performed for hypoallergenic applications in an effort to establish the absence of any intact casein fractions which may be a cause of allergic reactions.
Manufacturing Capabilities and Customization
We operate six versatile production lines that process diverse raw materials with customised specifications to suit your application requirements. Whether you need unique molecular weight distributions, altered protein concentrations or customised peptide profiles, we work with you through the development process with our R&D team.
We provide full OEM/ODM services including formula optimisation, private label and custom packaging. Whether you’re beginning with 15kg trial batches or scaling up to full-scale production runs, our flexible manufacturing methodology supports projects at every stage of commercial development.
We have over 30 days safety stock and a well-run supply chain to deliver 98% on-time to worldwide markets in North America, Europe and Southeast Asia. To streamline your purchase, we support EXW, FOB, CFR, CIF, DAP and DDP delivery terms through our logistical relationships.

Packaging and Storage Recommendations
Products are bagged in food grade plastic, and sealed in kraft paper bags for protection in shipment. Standard packaging is 15kg and 25kg bags, customised amounts are available upon request.
Store in a cool, dry, well-ventilated area, away from direct sunlight and heat sources. The product is stable and functioning for 24 months from the manufacturing date when stored under suitable circumstances.
FAQ
Q: What is the molecular weight of your casein peptides and why is this important?
A: The average molecular weight of our product is < 2000 Daltons. Because of their tiny size, they are rapidly absorbed and highly bioavailable thus your formulations can give faster nutritional benefits than whole proteins.
Q: Do you provide customised services with your product?
A: Yes, we may modify the concentration levels, container format and formula to suit your purpose. Our technical staff collaborates with you to develop the best solutions.
Q: Why is your protein so pure? What is the benefit of that?
A: Our product with protein content ≥90% and ultra-low heavy metal residues can fulfil food grade and cosmetic grade. High purity for optimal functional performance in your compositions.
Q: What raw materials and what techniques do you use?
A: We use high quality bovine milk casein, regulated enzymatic hydrolysis, purification and ultrafiltration. This technique enables stable peptide activity and reproducible batch-to-batch uniformity.
Q: How does your testing stack up against competitors?
A: We also do full molecular weight distribution studies, peptide mapping by HPLC and residual allergenicity testing by ELISA in addition to the routine protein assays. Each package is accompanied by complete certification paperwork.
Q: What certifications/compliance standards do you hold?
A: We are FDA registered, ISO certified and Kosher approved. We have COA, TDS, MSDS and MOA documents available to satisfy your regulatory needs for various markets.

Partner With a Trusted Protein Ingredient Manufacturer
Contact our ingredient specialists at enquiry@lenutra.com to request Hydrolyzed Casein Protein Powder samples, discuss your formulation needs, or explore customized solutions for your next project.
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