L-Lysine CAS:56-87-1

1. Human Nutrition and Health Supplements:

Essential Amino Acid Source: Critical for protein synthesis, supporting growth, tissue repair, and maintenance of muscle mass.

Immune System Support: Contributes to antibody production and enhances immune cell function, potentially aiding resistance to infections.

Calcium Absorption and Bone Health: Facilitates intestinal calcium absorption and renal conservation, contributing to bone mineralization and potentially reducing osteoporosis risk.

Collagen and Elastin Formation: Essential component in the synthesis of collagen and elastin, vital proteins for skin, tendons, cartilage, and connective tissue integrity.

Herpes Simplex Virus (HSV) Management: Supplementation is commonly used to help manage and reduce the frequency, severity, and duration of cold sore (HSV-1) outbreaks, potentially by competing with arginine, which the virus utilizes for replication.

Anxiety and Stress Management: Some research suggests L-Lysine, often combined with L-Arginine, may help modulate stress response and reduce anxiety symptoms.

2. Animal Feed Supplementation:

Growth Promotion and Feed Efficiency: As the first limiting amino acid in most cereal-based livestock and poultry diets (corn, wheat, sorghum), supplementation significantly improves growth rates, feed conversion ratios (FCR), and overall production efficiency.

Optimizing Protein Utilization: Allows formulation of lower-crude-protein diets by balancing essential amino acid profiles, reducing feed costs and nitrogen excretion into the environment.

Essential Nutrient for Ruminants: Required for microbial protein synthesis in the rumen and directly absorbed in the small intestine, crucial for milk production, growth, and reproduction in cattle and other ruminants.

Aquaculture Nutrition: Vital for optimal growth, feed efficiency, and health in fish and shrimp farming, where plant-based proteins often lack sufficient lysine.

3. Food Fortification and Processing:

Nutritional Enhancement: Added to staple foods (e.g., wheat flour, cereals, rice) in regions where lysine deficiency is a public health concern, improving protein quality and combating malnutrition.

Flavor Enhancer (Hydrochloride Form): L-Lysine hydrochloride (L-Lysine HCl) is used as a flavor enhancer in certain food products, contributing to a savory or umami taste.

Maillard Reaction Modifier: Can participate in Maillard browning reactions, influencing flavor and color development in processed foods.

4. Cosmetics and Personal Care:

Skin Health and Anti-Aging: Incorporated into skincare formulations (creams, serums) for its role in collagen synthesis, promoting skin elasticity, firmness, and wound healing, potentially reducing signs of aging.

Hair Care: Used in shampoos and conditioners to strengthen hair structure, improve texture, and enhance shine, leveraging its importance in keratin protein.

5. Pharmaceutical and Biochemical Applications:

Intravenous Nutrition (TPN): A key component of parenteral nutrition solutions provided to patients unable to consume food orally or enterally, ensuring adequate essential amino acid supply.

Drug Formulation: Used as an excipient or stabilizing agent in some pharmaceutical preparations.

Cell Culture Media: Essential component in media for growing mammalian cells in biotechnology and research laboratories.

Precursor for Other Compounds: Serves as a biochemical precursor in the synthesis of other important molecules like carnitine (involved in fatty acid metabolism).

6. Emerging Research Areas:

Cardiovascular Health: Investigating potential roles in reducing arterial stiffness and improving vascular function.

Metabolic Health: Exploring links to glucose metabolism and insulin sensitivity.

Neurological Function: Researching potential neuroprotective effects and roles in cognitive health.

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