Selenium-Enriched Yeast (100-1000)
Description
Selenium-Enriched Yeast (100-1000) – Premium Organic Selenium Ingredient for Nutraceuticals and Functional Foods
Xi'an Le-Nutra Ingredients Inc. is engaged in manufacturing of high grade Selenium-Enriched Yeast (100-1000) via controlled fermentation method. Our solution contains ≥2000 ppm total selenium and ≥98% organic selenium composition, therefore providing excellent bioavailability over synthetic alternatives. With our 60,000㎡ GMP-certified production plant and 3,000-ton yearly capacity, we ensure consistent quality and a stable global supply. With more than 14 years of experience in natural ingredient production, we guarantee that each batch fulfils the most stringent international requirements, including FDA, ISO and Kosher certifications.

What is Selenium-Enriched Yeast (100-1000)?
This is a particular nutritional element made by biofermentation of Saccharomyces cerevisiae in selenium-rich media. The yeast will naturally convert inorganic sodium selenite into organic forms of selenium throughout the fermentation process namely L-selenomethionine and selenocysteine.
The label "100-1000" shows the range of concentration in mg/kg, providing for fine adjustment of dosages for varied uses. It is different to inorganic selenium salts which have a danger of toxicity and are difficult to be absorbed, our selenium bound to yeast is incorporated in the protein structure of the cell.
This biological conversion results in a sustained-release delivery method with greatly improved safety characteristics. The organic selenium is protected into the matrix of the yeast cell, giving stability in processing and better bioavailability in the digestive system.
Technical Specifications and Quality Parameters
Our product meets pharmaceutical-grade standards with comprehensive testing protocols:
| Parameter | Specification |
|---|---|
| Source | Saccharomyces cerevisiae fermented in selenium medium |
| Appearance | Light yellow free-flowing fine powder |
| Total Selenium Content | ≥2000 ppm |
| Organic Selenium Ratio | ≥98% |
| Protein Content | ≥40% |
| Loss on Drying | ≤6.0% |
| Total Ash | ≤8.0% |
| Heavy Metals | Pb <10 ppm, As <2 ppm, Cd <1 ppm, Hg <0.1 ppm |
| Microbial Limits | TPC ≤1000 CFU/g, Yeast & Mold ≤100 CFU/g |
| Pathogen Testing | E. coli & Salmonella: Negative |
| pH Stability Range | 3.0–7.0 |
| Shelf Life | 24 months in original sealed packaging |
Each batch undergoes ICP-MS quantification for total selenium and HPLC-ICP-MS speciation analysis to verify organic selenium authenticity. Our advanced testing prevents adulteration and ensures your formulations receive consistent, high-quality active ingredients.
Key Advantages for Your Formulations
Superior Bioavailability
The organic selenium matrix permits a far higher rate of absorption than the inorganic selenite. Selenium, bound to amino acids and yeast proteins, naturally integrates into metabolic pathways, more efficiently supporting antioxidant enzyme systems.
Heat Stability
Our product is encapsulated within the walls of yeast cells and can survive processing temperatures up to 120°C without any degradation. This makes it appropriate for extrusion, tableting and pasteurisation applications where synthetic versions would lose efficacy.
Precise Dosage Control
The range 100-1000 ppm allows precise distribution in large-scale premixes. This lowers the formulation hazards associated with concentrated sources of selenium and guarantees uniform administration of the nutrient in the end product.
Clean Label Appeal
This 100% fermented yeast-derived ingredient meets consumer desire for natural, non-GMO and whole-food-based supplements. The subtle yeast flavour blends well into a wide range of recipes.
Summary of Safety Profile
Our strict quality control removes heavy metal contamination and dangerous germs. The organic form is less hazardous, therefore it has more wiggle room for daily supplementing than the inorganic forms.
Diverse Application Solutions
Manufacture of Nutritional Supplements
Our substance may be added to antioxidant complexes, immune support capsules and multi-mineral tablets. High organic selenium ratio boosts immunity, cell protection and thyroid health and provides a better label claim.
Functional Food Enrichment
Our product's thermal stability is a benefit to bakeries, dairy substitutes and beverage manufacturers. Whether it’s fortifying bread, enriching plant-based milk or boosting nutritional drinks, the selenium remains functional through processing.
Premium Nutrition For Animals
Organic livestock producers use our yeast in feed premixes to enhance the quality of meat and the selenium content of eggs and milk. Organic form is more efficient in the ruminant and poultry digestive system than synthetic sources.
Development of Specialised Formulations
Partner with us to develop unique doses for meal replacement powders, solid antioxidant drinks or compound dietary supplements. Our R&D team helps optimise the formula and perform stability testing during product development.
Quality Assurance and Manufacturing Excellence
We have built our quality control system around four pillars, validated by international standards:
Analytical Testing Services
ICP-MS technique measures total selenium to +/-5% accuracy. HPLC-ICP-MS speciation shows that organic selenium accounts for more than 80% of the total content and detects any inorganic adulteration.
Safety against Microbiological Contamination
Every batch is tested rigorously for pathogens including Salmonella, Staphylococcus aureus and E. coli. Our GMP facilities ensure controlled settings are in place to stop contamination during manufacturing.
Physical Consistency
Monitoring particle size distribution and bulk density ensures compatibility with automated capsule-filling and tableting equipment. This contributes to the manufacturing efficiency and consistency of your finished product.
Complete Traceability
Complete batch records are maintained from raw material purchase to final packing. This helps you meet your compliance needs and brings transparency across the whole supply chain.

Packaging and Global Delivery
We provide Selenium-Enriched Yeast (100-1000) in 25 kg fibre drums with double layer food grade polyethylene liners. This packaging is moisture resistant and keeps the product for international transportation.
We can offer different delivery options EXW, FOB, CFR, CIF, DAP, DDP to suit your logistics needs. We carry more than 30 days safety stock and deliver 98% on-time to help you maintain uninterrupted supply for your production schedules.
Payment Terms T/T, Alibaba Trade Assurance, Western union, etc. All shipments are accompanied with documentation like COA, TDS, MSDS and regulatory certificates.
FAQ
Q: Why choose the 100-1000 concentration range over higher concentrations?
A: Lower concentrations enable more accurate dosage distribution in large-scale premixes, reducing the risk of "hot spots" in final products. This ensures consistent selenium levels across your entire production run.
Q: How does this differ from synthetic selenomethionine?
A: Our yeast-derived selenium provides a complete matrix of proteins, vitamins, and minerals that aid absorption. Synthetic versions lack this synergistic biological complex, potentially reducing bioavailability and metabolic efficiency.
Q: Is it stable during high-temperature extrusion?
A: Yes, the organic selenium within the yeast cell wall receives thermal protection, showing minimal degradation at temperatures up to 120°C. This makes it suitable for challenging processing conditions.
Q: How do you detect if a product is spiked with inorganic selenium?
A: We use HPLC-ICP-MS speciation testing as the industry gold standard. If organic selenium ratios fall below 80%, it indicates potential adulteration or poor fermentation control.
Q: What is the recommended shelf life?
A: Under cool, dry conditions in original sealed packaging, our product maintains full potency for 24 months. This extended stability reduces inventory concerns and supports global distribution.

Partner with Le-Nutra for Your Ingredient Needs
Ready to enhance your formulations with Selenium-Enriched Yeast (100-1000)? Contact us today at enquiry@lenutra.com to request technical documentation, discuss bulk pricing, or explore OEM/ODM collaboration opportunities.
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