The Extract Factory stands as a premier manufacturer and global supplier of high-grade L-Carnitine Powder, specializing in bulk nutritional ingredients for the dietary supplement, functional food, and pharmaceutical industries. Headquartered in China with an export-focused supply chain, we provide wholesale buyers, formulators, and distributors with consistent material integrity, transparent documentation, and highly competitive bulk pricing.
Product Overview & Mechanism of Action
L-Carnitine Powder is a quaternary ammonium compound biosynthesized from the amino acids lysine and methionine. Structurally related to amino acids, this water-soluble nutrient plays an indispensable role in mitochondrial energy metabolism by shuttling long-chain fatty acids across the mitochondrial membrane for beta-oxidation and ATP synthesis. Although the human body produces L-carnitine endogenously in the liver and kidneys, endogenous synthesis is often insufficient to meet elevated metabolic demands during intense physical exertion, caloric restriction, or specific physiological stages. Consequently, L-Carnitine serves as a foundational ingredient in sports nutrition systems, weight-management formulations, cardiovascular support products, and specialized infant nutrition.
Why Source L-Carnitine Powder from The Extract Factory?
Superior Dissolution & Formulation Flexibility
Our crystalline L-Carnitine base is engineered for rapid hydration and clean flavor profiles, integrating seamlessly into pre-workout powders, encapsulated stacks, ready-to-drink beverages, and clinical nutrition formulas without unwanted sediment or bitter aftertaste.
Biotechnology-Driven Manufacturing
Rather than relying on animal-derived extraction, The Extract Factory utilizes advanced microbial fermentation technology. Selected high-yield bacterial or fungal strains are cultured under tightly controlled aeration, pH, and temperature parameters, producing L-Carnitine through natural biosynthetic pathways. This fermentation approach delivers a non-animal, highly concentrated active ingredient with exceptional lot-to-lot consistency.
Verified Potency & Purity
Every production batch is assayed via high-performance liquid chromatography (HPLC) to confirm identity and quantify active content. Standard release specification is ≥98% L-Carnitine, with typical batch assays such as 98.15%. Premium grades ≥99% are available for formulations demanding ultra-high purity, and all standard material is supplied without additives or fillers.
Technical Specifications & Quality Data
Physical Characteristics
- Appearance: White fine crystalline powder
- Odor & Taste: Characteristic of L-Carnitine
- Bulk Density (Loose): 0.51 g/ml
- Particle Size: Minimum 95% passes through an 80-mesh screen
- Solubility: Freely soluble in water; hygroscopic under high humidity
Chemical Profile (HPLC / Compendial Methods)
- L-Carnitine Assay (HPLC): ≥98% (Typical result: 98.15%)
- Moisture: ≤1.0% (Typical: 0.22% by 105°C, 4 h)
- Ash: ≤1.0% (Typical: 0.17%)
- Total Heavy Metals: <10 ppm
- Additives: None
Microbiological Control
- Total Aerobic Bacterial Count: ≤1,000 CFU/g
- Yeast: ≤100 CFU/g
- Mold: ≤100 CFU/g
- Escherichia coli: <3.0 MPN/g
- Salmonella: Not Detected
- Staphylococcus aureus: Not Detected
Manufacturing Excellence & Process Transparency
Our GMP-aligned fermentation workflow is designed to maximize yield while minimizing impurities:
- Strain Selection: Proprietary or licensed microbial strains are screened for L-Carnitine biosynthetic efficiency and genetic stability.
- Inoculation: Selected cultures are aseptically transferred to nutrient-rich seed media under laminar-flow protection.
- Fermentation: Production-scale bioreactors operate under precisely monitored temperature, dissolved oxygen, and pH setpoints to drive consistent metabolite accumulation.
- Biomass Separation: Cellular matter is removed via centrifugation or cross-flow microfiltration, yielding a clarified broth.
- Extraction & Purification: L-Carnitine is isolated from the broth using food-grade purification protocols that selectively remove proteins, polysaccharides, and residual media components.
- Concentration: Reverse-osmosis or vacuum evaporation increases the titer while minimizing thermal degradation.
- Drying: The concentrated solution is converted into a free-flowing powder via spray drying or vacuum belt drying.
- Testing & Release: Finished bulk powder undergoes identity testing, HPLC assay, residual solvent screening, heavy metals analysis, and full microbiological enumeration before release to inventory.
Analytical Methodology
Our primary quantitative method for L-Carnitine Powder is reversed-phase HPLC:
- Sample Preparation: The test sample is homogenized, accurately weighed, and dissolved in distilled water or an appropriate HPLC-grade diluent to target concentration.
- Chromatographic Conditions: Analysis is performed on a C18 reversed-phase column. The mobile-phase composition and flow rate are optimized to resolve L-Carnitine from related structural analogs.
- Detection: UV-visible detection at a wavelength specific to L-Carnitine absorbance ensures selective quantification.
- Calibration & Calculation: A multi-point external standard calibration curve correlates peak area (or height) with concentration. Unknown sample values are interpolated from this curve and reported on an anhydrous basis.
Note: Exact column dimensions, mobile-phase buffers, and run times may vary based on laboratory instrumentation and validated standard operating procedures.
Formulation Applications & Usage Guidance
Sports Nutrition & Athletic Performance
Functional Role: Facilitates mitochondrial fatty-acid oxidation, supporting sustained ATP output during endurance or resistance training. May attenuate post-exercise lactic acid accumulation.
Recommended Inclusion Rate: 1,000–2,000 mg per day, administered in divided doses before meals or around workout windows.
Weight Management & Metabolic Support
Functional Role: Promotes the transport and combustion of stored fatty acids, supporting net energy expenditure and complementing hypocaloric diets.
Recommended Inclusion Rate: 1,000–3,000 mg per day, consumed in divided doses prior to meals or exercise.
Cardiovascular & Heart Health
Functional Role: Supplements myocardial energy metabolism; the heart relies heavily on fatty-acid oxidation for ATP, making L-Carnitine a critical nutrient for cardiac bioenergetics.
Recommended Inclusion Rate: 500–2,000 mg per day, preferably before meals.
Cognitive Function & Neuroprotection
Functional Role: Supports cerebral energy status and acetylcholine precursor pools, contributing to focus, memory consolidation, and neuronal membrane stability.
Recommended Inclusion Rate: 500–2,000 mg per day in divided administrations.
Infant & Clinical Nutrition
Functional Role: Essential for neonatal lipid metabolism and organ development; often incorporated into specialized infant formulas and medical foods.
Recommended Inclusion Rate: Adjusted according to age, body weight, and applicable regulatory guidelines for infant food-grade applications.
Product developers and brand owners should adjust finished-product dosage based on target-market regulations, delivery format, and consumer demographics. Consultation with a qualified regulatory affairs specialist or healthcare practitioner is recommended for final label claims.
Packaging, Storage & Shelf Life
Primary Packaging: Food-grade, multi-layer aluminum foil pouches (1 kg to 5 kg) with heat-sealed closure.
Secondary Packaging: Corrugated fiberboard cartons or 25 kg industrial drums providing structural protection during ocean and air freight.
Custom Options: Private-label packaging and tailored batch sizes are available for contract manufacturing partners.
Storage Requirements: Store sealed containers in a cool, dry warehouse at ambient temperature, shielded from direct sunlight, excessive heat, and moisture. L-Carnitine Powder is chemically stable under these conditions but exhibits hygroscopic properties if exposed to humid air.
Shelf Life: 24 months from the manufacturing or quality-control testing date when stored in original, unopened packaging.
Certifications & Compliance
The Extract Factory maintains comprehensive documentation and third-party certifications to facilitate smooth international importation and finished-product registration:
- Business License
- Commodity Inspection Registration
- HALAL Certification
- KOSHER Certification
- ISO 22000 Food Safety Management Systems
Partner with The Extract Factory for Bulk L-Carnitine Supply
Whether you are a dietary supplement brand seeking reliable raw material continuity, a contract manufacturer scaling production, or a distributor serving global nutraceutical markets, The Extract Factory delivers L-Carnitine Powder that meets rigorous purity benchmarks and supply-chain transparency expectations. Our technical team is available to provide certificates of analysis (COAs), regulatory data sheets, stability documentation, and formulation compatibility guidance.
To request a quotation, sample, or technical specification packet, please contact our sales and technical services department at [email protected]. We look forward to supporting your next product innovation with consistent, high-performance L-Carnitine Powder.
