L-Lysine, with the chemical formula C6H14N2O2
L-Lysine, with the chemical formula C6H14N2O2 and CAS number 56-87-1, is a vital amino acid essential for human health and various industrial applications. It is recognized for its role in protein synthesis, calcium absorption, and immune system support.
Chemical Properties
Appearance: L-Lysine is a white to pale yellow crystalline powder, odorless and stable under normal conditions.
Solubility: It is slightly soluble in cold water, easily soluble in hot water, and almost insoluble in organic solvents like ether and ethanol.
pH Sensitivity: Functions as a zwitterion in water, contributing to its amphoteric nature.
Molecular Weight: 146.188 g/mol.
Melting Point: 215°C (dec.).
Boiling Point: 311.5°C at 760 mmHg.
Applications
Human Nutrition: L-Lysine is crucial for calcium absorption, muscle protein synthesis, and recovery from injuries. It is used in treating herpes infections and cold sores.
Animal Feed: It is an important additive to animal feed, promoting growth and feed efficiency in livestock and aquaculture.
Pharmaceuticals: Used in cell culture media and therapeutic formulations for its role in protein synthesis and detoxification.
Cosmetics: Incorporated for its skin-conditioning properties, enhancing the effectiveness of other ingredients.
Production Methods
L-Lysine is primarily produced through fermentation using organisms like C. glutamicum and E. coli. The process involves converting aspartate into lysine via enzymes such as aspartate kinase and homoserine dehydrogenase. Industrial production often uses continuous ion exchange technology to achieve high yields.
Safety and Handling
Toxicity: Generally recognized as safe (GRAS) when used within recommended limits.
Handling: Store in cool, dry conditions away from direct sunlight and moisture. Use appropriate protective equipment to prevent dust inhalation and eye contact.
Market Value and Applications
The demand for L-Lysine continues to grow due to its diverse applications in food, pharmaceuticals, cosmetics, and animal feed. Its importance in supporting health and industrial processes ensures its demand across these sectors.
Conclusion
L-Lysine's role as an essential amino acid makes it indispensable across multiple industries. Its applications in nutrition, medicine, and industrial manufacturing highlight its significance in promoting health and supporting various technological processes.