Soy Peptide
Soy Peptide is a partially hydrolysed soy protein in which the long polypeptide chains have been cleaved into shorter fragments, typically di-, tri-, and oligopeptides of 2 to 10 amino acid residues.
The shorter chain length gives soy peptide higher solubility, faster digestive absorption, and lower allergenicity than intact soy protein, which is why it has become a standard ingredient in sports nutrition and clinical nutrition formulations.
We source bulk Soy Peptide from top China manufacturers for our partners, working with several of them. The manufacturers are mostly in Shandong, Beijing and Henan. A smaller requirement can ship in a combined container with other ingredients.
Please send the grade you need, the volume and your destination port, and we will come back with a solution and a price.
or call +86-21-6858 0751
- Packaging
- 25 kg kraft paper bag with PE inner liner
- ISO 9001
- HACCP
- Halal
- Kosher
Specifications
Grades / Types Available: Food Grade, Feed Grade
| Item | Specification |
|---|---|
| Appearance | Light yellow to off-white free-flowing powder |
| Protein (dry basis, N×6.25) | ≥ 80.0% |
| Degree of Hydrolysis | 15–35% (as specified) |
| Peptide Content (MW ≤ 2000 Da) | ≥ 80.0% |
| Moisture | ≤ 7.0% |
| Ash | ≤ 7.0% |
| Fat | ≤ 1.0% |
| pH (1% solution) | 6.5–7.5 |
| Solubility | ≥ 95.0% |
| Heavy Metals (as Pb) | ≤ 1 mg/kg |
| Lead (as Pb) | ≤ 0.3 mg/kg |
| Total Plate Count | ≤ 10,000 CFU/g |
| Coliforms | ≤ 30 MPN/g |
| E. coli | Negative/g |
| Salmonella | Negative/25g |
| Purity/Assay (Food Grade) | ≥ 90% |
| Moisture/Loss on Drying | ≤ 8% |
| Particle Size/Mesh | 100% pass 80 mesh |
| Arsenic | ≤ 0.5 ppm |
| Yeast & Mold | ≤ 100 cfu/g |
Common Markets Grades
Soy Peptide is classified by degree of hydrolysis (DH), average molecular weight, and protein content.
Low DH grades (5 to 10 percent) retain most of the functional properties of the parent protein and are used where mild hydrolysis is enough to improve solubility. Medium DH grades (15 to 25 percent) target sports drinks and meal replacements. High DH grades (above 30 percent) target medical nutrition and infant formula adjuncts.
Average molecular weight grades span 200 to 500 Da for rapid absorption products, 500 to 1500 Da for general sports nutrition, and above 1500 Da for functional beverage applications.
Protein content typically runs at 80 to 90 percent on a dry basis. Spray-dried powder is the dominant format, with granulated and instantized grades available for direct stick-pack use.
Applications
- Sports nutrition powders, ready-to-drink shakes, and recovery beverages
- Medical nutrition formulas for surgical recovery and elderly nutrition
- Enteral tube-feeding products requiring rapid amino acid availability
- Hypoallergenic and partially hydrolysed infant nutrition adjuncts
- Meal replacement bars and shakes targeting weight management
- Clear protein beverages where intact soy protein would precipitate
- High-protein flavoured waters and isotonic drinks
- Fermented dairy alternatives as a soluble protein booster
- Functional confectionery such as protein gummies and chews
- Cosmetic skincare for film-forming and humectant effect
- Hair care conditioners and treatments as a protein that binds to the hair
- Pet supplements for senior and convalescent animals
China Manufacturers of Soy Peptide
Top Soy Peptide manufacturers in China.
- Cofco Biotech (Beijing) Co., Ltd.4 ingredients in the directory
Dezhou Lanli Biotechnology Co., Ltd.10 ingredients in the directory
Henan Established Long Industrial Co., Ltd.2 ingredients in the directory- Jiangsu Junqi Biotechnology Co., Ltd.1 ingredient in the directory
Linyi Shansong Biological Products Co., Ltd.4 ingredients in the directory- Rushan Hualong Biotechnology Co., Ltd.5 ingredients in the directory
Shandong Hailongyuan Bio-tech Co., Ltd.10 ingredients in the directory
Shandong Tianmei Biotech Co., Ltd.9 ingredients in the directory
Company names and logos are the property of the manufacturers themselves. They are listed here because our own directory records them as producing this ingredient. A listing is not an endorsement by them, and we do not represent them or speak on their behalf.
How We Help Source Soy Peptide
Direct Factory Sourcing
We run the whole process: selecting the manufacturer from the top Chinese food ingredient producers, negotiating the price, verifying quality, and coordinating the logistics. You deal with us instead of with several factories at once.
Original Packaging and Documents from the Manufacturer
The manufacturer sends your Soy Peptide out of its own factory in the original packing, through to your destination port. The COA, COO, MSDS, TDS and any certifications reach you from the manufacturer as well.
Free Samples and Lead Time
We send 100 to 500 g free for your own laboratory to test and you cover only the courier, usually within 2 to 3 working days. ETD is usually within 7 to 15 days once the order is confirmed, and we check that date against the factory's own manufacturing schedule before we give it to you.
Combined Shipment
We can load Soy Peptide together with other ingredients such as Collagen Peptide, Soy Protein Isolate and Fish Collagen Peptide into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
Soy Peptide is regulated as a conventional food ingredient or as a protein hydrolysate, depending on the jurisdiction.
In the United States it is recognised as a food ingredient when made from food-grade SPI using food-grade enzymes. GRAS notifications cover specific commercial grades.
The European Union treats soy protein hydrolysate as a standard ingredient. Soy allergen labelling under Regulation (EU) 1169/2011 is mandatory regardless of the degree of hydrolysis.
Codex Alimentarius covers soy protein products including hydrolysates under CXS 175-1989.
Halal, Kosher, and Non-GMO Project certifications are routinely available. Most commercial supply is produced from non-GMO identity-preserved soybeans for the sports nutrition and clinical channels.
Manufacturing Process
Production begins with soy protein isolate (SPI) at 88 to 92 percent protein. The isolate is dispersed in water at 8 to 12 percent solids and pH adjusted to the optimum for the chosen enzyme.
Food-grade endo- and exopeptidases are then added in sequence. Common combinations include alcalase followed by flavourzyme, or papain followed by a debittering enzyme. Reaction temperature and time are tuned to hit the target degree of hydrolysis.
The reaction is stopped by heat inactivation at 85 to 95 degrees Celsius. The hydrolysate is centrifuged to remove insoluble residue, then carbon-treated to reduce bitter peptides and off-flavours.
Membrane filtration is used to fractionate by molecular weight. Ultrafiltration with 1 to 10 kDa cutoff membranes isolates the target peptide range, with the permeate going to the lower molecular weight product and the retentate recycled.
The clarified peptide solution is concentrated by evaporation or reverse osmosis, then spray-dried into a free-flowing powder.
