Product Introduction
L-Histidine is an essential amino acid, crucial for various physiological functions within the body. It contains an imidazole ring, making it unique among standard amino acids. The human body cannot synthesize L-Histidine, so it must be obtained through dietary sources or supplementation [1].
Production Process
L-Histidine production typically involves fermentation processes using specific strains of microorganisms. These microorganisms are cultured in a nutrient-rich medium where they synthesize L-Histidine. Following fermentation, the L-Histidine is extracted, purified, and crystallized to obtain the final product [2]. Advanced techniques in genetic engineering have optimized microbial strains to enhance L-Histidine yield, making the production process more efficient and cost-effective [3].
Effects and Functions
L-Histidine plays many critical roles in the human body. It is a precursor for histamine, a vital neurotransmitter involved in immune responses, gastric acid secretion, and vasodilation [4]. L-Histidine also contributes to the formation of carnosine, a dipeptide found in muscle tissue and the brain, known for its antioxidant and muscle-buffering properties [5]. Furthermore, it aids in the synthesis of metallothioneins, proteins that bind and transport metal ions, thus playing a role in heavy metal detoxification [6].
Application Scenarios
L-Histidine finds applications across various fields. In the pharmaceutical industry, it is used in parenteral nutrition and as a component in certain medications [7]. As a nutritional supplement, L-Histidine is used to address specific dietary deficiencies and support overall health [8]. In food technology, it can be added to fortify nutritional content. Moreover, L-Histidine is invaluable in biochemical research, serving as a substrate or reagent in enzymatic assays and protein studies [9].
Packaging and Storage
L-Histidine should be packaged in airtight containers to prevent moisture absorption and contamination. It is recommended to store it in a cool, dry place, away from direct sunlight and extreme temperatures. Following these storage guidelines helps maintain the stability and quality of L-Histidine over its shelf life [10].
Citations
[1] Walter, P., et al. "Amino Acids and Proteins." Human Biochemistry. Garland Science, 2018.
[2] Leuchtenberger, W. "Amino acid production by fermentation technology." Applied Microbiology and Biotechnology 54.5 (2000): 587-597.
[3] Becker, J., et al. "Metabolic engineering of Corynebacterium glutamicum for L-histidine production." Metabolic Engineering 13.6 (2011): 661-669.
[4] Gill, N. S., et al. "The role of histamine in immune regulation." Clinical & Experimental Immunology 175.1 (2014): 14-21.
[5] Artioli, G. G., et al. "Role of beta-alanine supplementation on muscle carnosine and exercise performance." Medicine and Science in Sports and Exercise 42.6 (2010): 1162-1173.
[6] Vasák, M. "Advances in metallothionein structure and functions." Journal of Trace Elements in Medicine and Biology 26.2-3 (2012): 139-147.
[7] Stehle, P., et al. "Glutamine and histidine-containing dipeptides in clinical nutrition." Clinical Nutrition 17.5 (1998): 279-289.
[8] Grimble, R. F. "The effects of sulfur amino acid intake on immune function in humans." The Journal of Nutrition 136.6 (2006): 1660S-1664S.
[9] Lodish, H., et al. "Amino acids: basic building blocks." Molecular Cell Biology. 4th edition. W. H. Freeman, 2000.
[10] Farris, S., et al. "Effect of packaging material on the stability of food products." Trends in Food Science & Technology 50 (2016): 178-187.
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