Overview
L-Alanine is a naturally occurring non-essential amino acid, meaning the human body can synthesize it. It plays a critical role in protein biosynthesis and glucose metabolism. As one of the simplest amino acids, it is widely utilized in pharmaceuticals, food industries, and research laboratories. In biochemical pathways, L-Alanine acts as a key intermediate in the glucose-alanine cycle, facilitating nitrogen transport between tissues. Its versatility and safety profile make it a staple in formulations ranging from intravenous solutions to energy-boosting supplements.
Physical and Chemical Properties
L-Alanine is a white, odorless crystalline powder with a sweet taste. It is highly soluble in water but exhibits limited solubility in organic solvents like ethanol. The compound decomposes at temperatures above 297°C, making it stable under normal storage conditions. Its molecular structure includes a chiral center, giving it optical activity. The L-isomer is biologically active and predominates in natural systems. Analytical methods such as HPLC and NMR are commonly employed to verify its purity and stereochemical configuration.
Main Applications
In pharmaceuticals, L-Alanine is used in parenteral nutrition and as a buffer in tablet formulations. It also serves as a precursor for synthesizing other amino acids and active pharmaceutical ingredients (APIs). The food industry incorporates it as a flavor enhancer (E640) and nutritional supplement, particularly in sports drinks and protein bars. Additionally, it is a vital component in cell culture media and enzymatic assays, supporting biotechnology and diagnostic applications.
Safety and Storage
L-Alanine is classified as GRAS by the FDA and poses minimal toxicity risks. However, prolonged exposure to dust may irritate respiratory pathways, necessitating proper ventilation during handling. Storage recommendations include keeping the product in tightly sealed containers at room temperature, away from moisture and direct sunlight. Bulk quantities should be palletized to prevent contamination and degradation over time.
B2B Procurement Guide
When sourcing L-Alanine, prioritize suppliers with ISO or GMP certifications to ensure compliance with industry standards. Request certificates of analysis (CoA) to validate purity (typically ≥98%) and absence of heavy metals. For large-scale procurement, negotiate bulk pricing and confirm logistics support for temperature-sensitive shipments. Spot-check batches upon delivery to maintain quality consistency, especially for pharmaceutical-grade material.
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