Selenium-enriched Yeast
Nutritional Enhancers
Minerals & Trace Elements
complex (organic/inorganic Se)
$29.27 ~ $43.91
Food
Free sample from 100g(NF)
One unit of:25kg/barrel
One unit of:25kg/barrel
25kg/barrel
Product Info
What is Selenium-enriched Yeast?
Selenium-enriched yeast is *Saccharomyces cerevisiae* cultivated to organically incorporate the essential trace element selenium, widely utilized as a highly bioavailable nutritional supplement ingredient for human and animal health.
How is Selenium-enriched Yeast made?
| Step No. | Production Stage | Key Action | Control Point & Note |
|---|---|---|---|
| 1 | Medium Preparation | Prepare a nutrient-rich liquid culture medium, typically using molasses, sugars, and nitrogen/phosphorus sources. | Control the pH, temperature, and nutrient concentration of the medium. The entire batch must be sterilized to prevent contamination by unwanted microbes. |
| 2 | Yeast Inoculation | Introduce a pure, pre-cultured starter strain of Saccharomyces cerevisiae into the sterile fermentation medium. | Use a genetically stable and verified yeast strain. The inoculation volume and cell viability are critical for initiating a healthy fermentation. Aseptic technique is crucial. |
| 3 | Fermentation | Allow the yeast to grow and multiply under controlled aerobic (oxygen-rich) conditions in a large-scale fermenter. | Continuously monitor and control temperature, pH, and dissolved oxygen (DO). Proper aeration is essential for maximizing yeast biomass growth. |
| 4 | Selenium Enrichment | Add a measured amount of an inorganic selenium source (e.g., sodium selenite) to the fermenter during the yeast's exponential growth phase. | The timing and dosage of selenium addition are the most critical parameters. This step allows the yeast to absorb and bio-transform inorganic selenium into safer, more bioavailable organic forms like selenomethionine. |
| 5 | Harvesting & Centrifugation | Separate the concentrated yeast cells (biomass) from the spent fermentation broth using high-speed centrifuges. | Monitor centrifuge speed and flow rate to achieve maximum yeast cell recovery. The resulting product is a thick liquid known as yeast cream. |
| 6 | Washing | Wash the harvested yeast cream with purified water multiple times to remove residual medium and any un-metabolized inorganic selenium. | This purification step is critical for product safety, ensuring that levels of potentially toxic inorganic selenium in the final product are extremely low. |
| 7 | Inactivation (Pasteurization) | Heat the washed yeast cream to a specific temperature for a set duration to kill the live yeast cells and ensure microbiological safety. | Control pasteurization temperature and time precisely. This step stops all metabolic activity, breaks the cell wall for better digestibility, and stabilizes the product. |
| 8 | Drying | Convert the liquid inactivated yeast into a stable powder, typically using a spray dryer or drum dryer. | Control the inlet/outlet temperatures and feed rate of the dryer. The goal is to achieve a target low moisture content (e.g., <8%) for long-term product stability. |
| 9 | Milling & Sieving | Mill the dried yeast to a uniform, fine powder and pass it through a sieve to ensure consistent particle size. | Ensures product homogeneity and good flowability. Sieving removes any oversized particles or potential foreign matter. |
| 10 | Quality Control & Packaging | Test the final powder for key specifications and package it in airtight, moisture-proof containers. | Final QC checks must confirm total selenium content, organic selenium levels, heavy metal limits, and microbiological purity. Proper packaging protects the product from moisture and oxidation. |
Technical Specifications
| Chemical Formula | complex (organic/inorganic Se) |
| Solubility | insoluble in water |
| Storage Conditions | store cool, dry, dark |
| Shelf Life | 36 Months |
Applications & Usage
Common Applications:
animal feed
dietary supplements
fortified foods
Mechanism of action:
| Parameter | Selenium-enriched Yeast |
|---|---|
| Functional Category | Nutritional Fortificant; Antioxidant Source |
| Key Ingredients | Organically bound Selenium (primarily Selenomethionine and Selenocysteine) within a deactivated yeast (Saccharomyces cerevisiae) matrix. |
| Mechanism of Action | Delivers highly bioavailable organic selenium. Selenomethionine is non-specifically incorporated into general body proteins in place of methionine, creating a storage pool. Selenocysteine is the biologically active form directly incorporated into the active site of critical antioxidant enzymes, such as Glutathione Peroxidases (GPx), which neutralize reactive oxygen species and protect cells from oxidative damage. |
| Application Effect in Product | Increases the selenium content of foods or dietary supplements, enabling nutritional content claims. Provides a stable, organic form of selenium that supports consumer health benefits related to antioxidant defense, immune system function, and thyroid health. Improves the nutritional profile of the final product. |
Comparison:
| Product Name | Category/Type | Key Features | Strengths (vs peers) | Weaknesses (vs peers) | Best Use Cases | Why Choose |
|---|---|---|---|---|---|---|
| Selenium-enriched Yeast | Organic Selenium Supplement (Food-form) | Yeast (S. cerevisiae) grown in a selenium-rich medium; contains a spectrum of organic selenium compounds like selenomethionine and selenocysteine. | High bioavailability; provides a natural food matrix with co-factors like B vitamins; considered a safe and effective form. | Unsuitable for individuals with yeast allergies or sensitivities; less precise dosage of specific seleno-compounds compared to isolated forms. | General wellness, antioxidant support, immune health for those preferring a food-based supplement. | For a highly bioavailable, food-form selenium that mimics natural dietary intake and provides additional yeast-based nutrients. |
| Selenomethionine | Organic Selenium Supplement (Isolated Form) | A pure, single molecule of the amino acid methionine with selenium substituted for sulfur. | Very high and predictable bioavailability; precise dosing is easy; extensively studied in clinical research. | Lacks the synergistic nutrients and other seleno-compounds found in food-form supplements; is a single, isolated compound. | Targeted therapeutic applications, clinical trials, or for individuals with yeast intolerance who need a high-absorption form. | When a precise, high-potency, and well-researched form of selenium is required without other food components. |
| Sodium Selenite | Inorganic Selenium Supplement | A simple inorganic salt of selenium. | Inexpensive; its metabolic pathway allows for quick incorporation into functional selenoenzymes like glutathione peroxidase. | Lower bioavailability than organic forms; can generate more oxidative stress during metabolism; has a narrower margin between effective and toxic doses. | Cost-effective supplementation, fortification of animal feed, some specific clinical research contexts. | For a low-cost option or when its unique, rapid metabolic pathway is specifically desired over protein storage. |
| Brazil Nuts | Whole-Food Selenium Source | Natural tree nut exceptionally high in selenium; also provides healthy fats, protein, and fiber. | Completely natural food source with a full matrix of nutrients; no synthetic ingredients or fillers. | Selenium content is highly variable depending on soil conditions, making accurate dosing nearly impossible; high in calories. | Dietary inclusion for general health for those who want to avoid pills and supplements entirely. | To get selenium from an unprocessed, whole-food source, provided that precise daily intake is not a primary concern. |
Technical Documents
Available Documentation
certificate of analysis
Safety Data Sheet (SDS)
SDS available
Certificate of Analysis (COA)
Quality assurance documentation
Technical Data Sheet
Detailed technical specifications