L-ornithine hydrochloride is a non-essential amino acid that plays a central role in the urea cycle, the metabolic pathway responsible for converting ammonia into urea for excretion. It is also involved in the biosynthesis of L-arginine, L-proline, and polyamines. For manufacturers of kosher dietary supplements, sourcing L-ornithine HCl with proper certification ensures compliance with dietary regulations.
Available as a white crystalline powder with purity levels of 98.5% to 101.5%, L-ornithine HCl (CAS 3184-13-2) has a molecular formula of C5H13ClN2O2 and a molecular weight of 168.62 g/mol. It is soluble in water at 543 mg/mL at 20 degrees Celsius, making it suitable for both powder and liquid supplement formats.
The Role of L-Ornithine in Human Metabolism
L-ornithine is a key intermediate in the urea cycle, where it helps the body process and eliminate excess nitrogen in the form of ammonia. This function is particularly relevant for individuals with high protein intake or those engaged in intense physical activity.
Beyond ammonia detoxification, L-ornithine serves as a precursor for the synthesis of L-arginine and L-proline. L-arginine supports nitric oxide production and cardiovascular health, while L-proline is essential for collagen synthesis and connective tissue maintenance.
Kosher Certification Standards
Kosher certification for L-ornithine HCl requires verification that all raw materials, fermentation media, and processing aids comply with Jewish dietary law. A recognized rabbinical authority inspects the manufacturing facility and reviews the full production chain.
Supplement brands such as Bluebonnet offer kosher-certified L-ornithine capsules at 500 mg per serving, demonstrating established consumer demand for this certification. Bulk ingredient suppliers must provide current kosher certificates alongside their standard quality documentation.
Supplement Formulation and Dosage
L-ornithine HCl is commonly formulated in freeform amino acid capsules and powder blends. The composition of commercial L-ornithine HCl is typically 99% to 101% active ingredient with no excipients or carriers added, giving formulators full control over their finished product.
It is often combined with L-arginine in sports nutrition products targeting recovery and growth hormone support. Storage requirements are straightforward: keep at room temperature in a tightly sealed container, away from oxidizing agents.
Sourcing and Documentation
When purchasing L-ornithine HCl in bulk, request a certificate of analysis, certificate of origin, and specification sheet. Key parameters to verify include assay by titration, identification by FTIR, and residual solvent levels. Sigma-Aldrich lists pack sizes from 100 g to 1 kg for research quantities, but food-grade bulk supply is available in larger volumes.
Confirm that the kosher certificate is current and matches the specific lot number being purchased. This is especially important for supplement brands making kosher claims on their finished product labels.
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