Description
Lactobacillus fermentum (Limosilactobacillus fermentum under the 2020 taxonomic revision) is a heterofermentative species widely distributed in fermented plant foods, sourdough, dairy, and the human gastrointestinal and oral microbiota.
Supplied as a freeze-dried powder with viability between 100 and 500 billion CFU per gram at release. The species tolerates a wide pH range, ferments a broad substrate spectrum, and is recognized for antioxidant and immunomodulatory activity in selected strains.
Off-white to pale beige free-flowing powder with a clean fermented note. Particle size suitable for capsule, sachet, sports nutrition powder, and fermented beverage applications.
We supply food-grade Lactobacillus fermentum from manufacturers in China holding ISO 22000, FSSC 22000, Halal, Kosher, and other certifications relevant to probiotic strain production.
Common market grades include 100, 200, and 500 billion CFU per gram freeze-dried powders, microencapsulated grades, and spray-dried heat-tolerant variants for sports nutrition and premix applications. Bulk and reduced-MOQ shipments with batch-level COA covering viable count, strain identity, moisture, heavy metals, and pathogen panel.
Introduction
Lactobacillus fermentum was first described in 1900 and has been studied as a key fermentation organism in traditional foods worldwide. The reference strain ATCC 14931 and the commercial strain VRI-003 (PCC) are widely used, with extensive clinical work supporting respiratory and immune applications in athletes.
Industrial production uses MRS-based proprietary media under controlled anaerobic conditions, followed by biomass recovery, cryoprotectant blending, and lyophilization. Spray-dried heat-tolerant grades are produced for applications requiring resilience during downstream processing of sports nutrition powders and premixes.
Regulatory status includes GRAS notifications with FDA for specific strains, Qualified Presumption of Safety listing in the European Union, and acceptance under traditional-food and fermented-beverage frameworks in multiple regions.
Clinical evidence for L. fermentum VRI-003 supports reductions in upper respiratory tract infection incidence and duration in competitive athletes, with parallel evidence for other strains in lipid profile modulation and urogenital health.
Where it is used
- Sports nutrition recovery and immune support powders
- Probiotic capsules and tablets for adult digestive health
- Functional fermented plant beverages and dairy alternatives
- Sourdough starter culture blends
- Women's health and urogenital microbiome supplements
- Cardiometabolic and cholesterol-management formulations
- Multi-strain probiotic stacks for athletes
- Animal feed probiotic premixes
- Synbiotic formulations with prebiotic fibers
Technical data
| Item | Specification |
|---|---|
| Appearance | Off-white to pale beige free-flowing powder |
| Viable cell count | ≥ 150 billion CFU/g (100B, 200B, 500B grades) |
| Strain identity | Confirmed by 16S rRNA sequencing |
| Moisture (loss on drying) | ≤ 5.0% |
| Particle size | ≥ 95% through 80 mesh |
| Heavy metals (as Pb) | ≤ 1 mg/kg |
| Arsenic | ≤ 0.5 mg/kg |
| Salmonella | Absent in 25 g |
| E. coli | Absent in 10 g |
| Staphylococcus aureus | Absent in 10 g |
| Yeast and mold | ≤ 50 CFU/g |
| Shelf life | 24 months from manufacture under recommended storage |
| Storage | −18 °C sealed; 2 to 8 °C after opening |
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