Yeast Polypeptide
Yeast Polypeptide is the longer chain fraction of enzymatically hydrolysed Saccharomyces cerevisiae protein.
Unlike free amino acid heavy yeast peptide products, the polypeptide grade retains a higher proportion of intermediate chain length peptides between 1000 and 10000 daltons. The composition gives a milder savory flavour and a slower release nitrogen profile.
We source bulk Yeast Polypeptide from top China manufacturers for our partners. The manufacturer is in Guangdong. 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
| Item | Specification |
|---|---|
| Appearance | Light yellow to brown powder |
| Protein Content (dry basis) | ≥ 70% |
| Polypeptide Content | ≥ 60% |
| Moisture | ≤ 6.0% |
| Ash | ≤ 10.0% |
| Total Plate Count | ≤ 10,000 cfu/g |
| Heavy Metals (as Pb) | ≤ 2 mg/kg |
| Dry Matter (min) | 94.0% |
| Total Nitrogen (on salt free dry matter) | 10.0% |
| Amino Nitrogen (on salt free dry matter) | 4.0% |
| NaCl (on salt free dry matter) | 5% |
| pH | 4.0~7.0 |
| Ammonium Salt (base on N, on salt free dry matter) | 1.5% |
Common Markets Grades
Yeast Polypeptide divides into a nutritional grade and a cosmetic grade.
Nutritional grade is characterised by protein content above 70 percent and a molecular weight distribution centred around 3000 to 5000 daltons. The free amino acid fraction is held below 15 percent to preserve peptide character.
Cosmetic grade undergoes additional purification to deliver a low colour, low odour powder suitable for skin and hair care formulations. Filtration through reduced pore size membranes removes residual cell wall fragments and improves clarity in liquid systems.
Applications
- Sports nutrition and weight management protein blends
- Functional beverages where protein clarity and mild flavour are needed
- Plant based meat and dairy alternatives for protein boost and savory complexity
- Microbial fermentation nutrient where peptide nitrogen outperforms free amino acids
- Cell culture media as a defined peptone alternative
- Cosmetic shampoos and conditioners for hair smoothing and shine
- Skin care creams and serums marketed on protein conditioning
- Animal feed for young livestock requiring highly digestible nitrogen
- Pet food humectant and palatant systems
- Aquaculture starter feed for shrimp and fish larvae
China Manufacturers of Yeast Polypeptide
Top Yeast Polypeptide manufacturers in China.
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 Yeast Polypeptide
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 Yeast Polypeptide 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 Yeast Polypeptide together with other ingredients such as Sodium Acid Pyrophosphate, Monocalcium Phosphate and Diammonium Phosphate into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
Yeast Polypeptide carries the same regulatory profile as other hydrolysed yeast protein ingredients.
The parent biomass and its hydrolysate are accepted food ingredients in the European Union, the United States, China, Japan, and most other markets.
For cosmetic applications the ingredient is listed in the INCI directory under names that include hydrolysed yeast protein, and the cosmetic regulations of each region govern permitted use.
Cell culture media use in pharmaceutical and biopharmaceutical manufacturing falls under animal origin free and chemically defined ingredient policies. Detailed traceability and absence of animal origin material are commonly required by biopharmaceutical customers.
Manufacturing Process
Yeast Polypeptide is produced by a controlled enzymatic hydrolysis of yeast protein that limits the depth of cleavage.
Yeast protein concentrate is suspended in water and treated with selective endopeptidases under defined pH and temperature. The reaction is monitored by degree of hydrolysis and stopped at a value that preserves intermediate chain length peptides.
The hydrolysate is heat treated to inactivate the enzymes, then filtered through coarse and fine membranes to remove insoluble debris. For cosmetic grade, an additional ultrafiltration step controls the upper end of the molecular weight distribution.
The clarified hydrolysate is concentrated, spray dried, and milled to specification.
