L-histidine

What is L-histidine

**Introduction to L-Histidine** L-Histidine is an essential amino acid crucial for protein synthesis, tissue repair, and overall metabolic function. As a precursor to histamine, it supports immune response, digestion, and neurotransmission. It also plays a key role in maintaining the myelin sheath, which protects nerve cells, and helps produce red and white blood cells. Found in protein-rich foods like meat, fish, dairy, and legumes, L-histidine is also available as a dietary supplement. Athletes and individuals with certain health conditions may benefit from supplementation to support muscle recovery, reduce fatigue, and promote cardiovascular health. Its versatility makes L-histidine a valuable nutrient for both physical and cognitive well-being.

Preparation Process: L-Histidine can be prepared through microbial fermentation or chemical synthesis. In fermentation, *Corynebacterium glutamicum* or *Escherichia coli* strains are cultured with glucose and ammonium salts, yielding L-histidine after purification. Chemically, it is synthesized via the Erlenmeyer azlactone method: glycine reacts with benzaldehyde to form an azlactone, which is then converted to L-histidine through hydrogenation and resolution. Alternatively, L-histidine can be derived from hydrolysis of histidine-rich proteins like hemoglobin or casein, followed by ion-exchange chromatography. Enzymatic methods using histidine ammonia-lyase (HAL) are also employed for efficient production. Purification involves crystallization or chromatography.

Usage Scenarios: L-Histidine is an essential amino acid with various biological and industrial applications. It serves as a precursor for histamine, a neurotransmitter involved in immune responses, digestion, and sleep-wake regulation. In medicine, L-histidine is used to treat rheumatoid arthritis, anemia, and allergic conditions due to its anti-inflammatory properties. It also supports tissue repair and muscle growth, making it valuable in sports nutrition and wound healing. Industrially, L-histidine is utilized in cosmetics for skin hydration and anti-aging formulations. Additionally, it acts as a buffering agent in biochemical research and pharmaceutical preparations. Its chelating properties are beneficial in metal detoxification therapies.

L-histidine Basic Info

L-histidine Price

MSDS