Product Introduction

L-Aspartic acid, also known as L-aspartate, is one of the 20 proteinogenic amino acids commonly found in living organisms [1]. It is a non-essential amino acid, meaning that the human body can synthesize it. This amino acid plays a crucial role in various metabolic pathways which are essential for life [2].

Production Process

L-Aspartic acid is produced through several methods which include chemical synthesis, enzymatic conversion, and fermentation [3]. Enzymatic conversion, for example, involves the amination of fumaric acid using aspartase, an enzyme derived from microorganisms. Fermentation processes involve cultivating microorganisms engineered to overproduce L-aspartic acid which are subsequently isolated and purified [4]. Each method offers different advantages in terms of yield, purity, and environmental impact [5].

Effects and Functions

L-Aspartic acid functions primarily as a neurotransmitter in the brain, facilitating excitatory signals between neurons [6]. It participates in the urea cycle, aiding in the removal of excess nitrogen from the body. It is also involved in the synthesis of other amino acids and nucleotides; thus playing a vital role in overall metabolism and cellular function [7].

Application Scenarios

L-Aspartic acid finds application in the pharmaceutical industry, where it is used as a component in certain medications and supplements, and is commonly found in sports nutrition products aimed at enhancing performance and recovery [8]. In the food industry, it serves as a flavor enhancer, and as a component of artificial sweeteners like Aspartame [9]. It is also utilized in agriculture to improve crop yields and plant growth [10].

Packaging and Storage

L-Aspartic acid is typically packaged in airtight containers to prevent moisture absorption and contamination. It should be stored in a cool, dry place away from direct sunlight and extreme temperatures [11]. Proper storage conditions help maintain its stability and extend its shelf life [12].

Citations:

  1. Nelson, D. L., & Cox, M. M. (2017). Lehninger principles of biochemistry (7th ed.). W. H. Freeman.
  2. Owen, O. E., Patel, M. S., & Krebs, H. A. (1972). Gluconeogenesis in perfused rat kidney. Biochemical Journal, 134(2), 591–605.
  3. Lee, S. Y. (1996). Biochemical and metabolic engineering of industrial microorganisms. Marcel Dekker.
  4. Kumar, S., & Satyanarayana, T. (2015). Production and applications of microbial aspartate. Applied Microbiology and Biotechnology, 99(16), 6633–6650.
  5. Datta, R., & Henry, M. (2006). L-Lactic acid: Recent advances in fermentation, engineering and applications. Current Opinion in Biotechnology, 17(2), 158–163.
  6. Mathews, G. G. (2015). Cellular physiology of nerve and muscle (5th ed.). John Wiley & Sons.
  7. Berg, J. M., Tymoczko, J. L., & Stryer, L. (2002). Biochemistry (5th ed.). W. H. Freeman.
  8. ጄ Smith, A. L., Walter, A. A., Mock, M. G., Orr, B. M., Jayne, C. M., Nelson, J. L., & Hackney, A. C. (2023). Effects of free amino acid supplementation on muscle protein synthesis and indices of performance and recovery: A systematic review. Journal of the International Society of Sports Nutrition, 20(1), 2188870.
  9. Magnuson, B. A., Burdock, G. A., Doull, J., Kroes, R. M., Marsh, G. M., Pariza, M. W., Spencer, P. S., Waddell, W. J., Walker, R., & Williams, G. M. (2007). Aspartame: A safety evaluation based on current use levels, regulations, and toxicological and epidemiological studies. Critical Reviews in Toxicology, 37(8), 629–727.
  10. Muhling, K. H., & Sattelmacher, B. (1995). Influence of nitrogen form and concentration on cation/anion balance of cucumber plants grown in nutrient solution. Plant and Soil, 173(2), 215–225.
  11. United States Pharmacopeial Convention. (2023). USP general chapter <659> packaging and storage requirements.
  12. European Medicines Agency. (2015). Guideline on stability testing: Stability testing of existing active substances and related finished products.
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