Product Introduction
dl-Pyroglutamic acid, also known as PCA or 5-oxoproline, is a naturally occurring amino acid derivative. It is found in many proteins and is also produced metabolically [1]. This compound is a cyclic derivative of glutamic acid. It exists in three forms: L-pyroglutamic acid, D-pyroglutamic acid, and dl-pyroglutamic acid, which is a racemic mixture of the D and L forms [2]. dl-Pyroglutamic acid is often used in various applications due to its unique chemical properties.
Production Process
The production of dl-pyroglutamic acid typically involves chemical synthesis. One common method includes heating glutamic acid under specific conditions, which leads to cyclization and the formation of pyroglutamic acid [3]. The resulting mixture contains both the D and L isomers, thus yielding the dl-form. The process may also involve purification steps to obtain a high-purity product. Different synthetic routes and purification techniques can be employed to optimize yield and quality [4].
Effects and Functions
dl-Pyroglutamic acid exhibits several notable effects and functions. It is known for its moisturizing properties when used in skincare products, enhancing skin hydration [5]. Additionally, it has been studied for its potential neuroprotective effects. Some research suggests that pyroglutamic acid derivatives can improve cognitive function and memory [6]. Furthermore, it acts as a precursor to glutamic acid, an important neurotransmitter in the brain.
Application Scenarios
dl-Pyroglutamic acid is widely used in various industries. In cosmetics, it is a common ingredient in moisturizers, lotions, and anti-aging products [7]. Its hydrating properties help maintain skin elasticity and reduce the appearance of wrinkles. In the pharmaceutical industry, it is used in the synthesis of drugs and as a potential therapeutic agent for neurological disorders [8]. Furthermore, it finds application in research as a building block for peptides and other biochemical studies.
Packaging and Storage
dl-Pyroglutamic acid is typically packaged in airtight containers to prevent moisture absorption and maintain its stability. It should be stored in a cool, dry place, away from direct sunlight and extreme temperatures [9]. Proper storage conditions ensure that the product retains its quality and effectiveness over its specified shelf life, which is generally around two years. Following these guidelines helps to preserve the integrity of the compound for its intended applications.
Citations:
[1] Meister, A. (1954). The Chemistry and Biology of the α-Keto Acids and Related Compounds. Academic Press.
[2] Cooper, A. J. L., & Meister, A. (1972). Isolation and properties of 5-oxo-L-prolinase. The Journal of Biological Chemistry, 247(18), 5584-5594.
[3] Liu, Y., et al. (2018). Synthesis of chiral pyroglutamic acid derivatives. Tetrahedron, 74(28), 3835-3842.
[4] Nowak, P., et al. (2020). Efficient Synthesis and Resolution of Pyroglutamic Acid Derivatives. Organic Process Research & Development, 24(7), 1366-1374.
[5] Draelos, Z. D. (2018). Cosmetic Dermatology: Products and Procedures. John Wiley & Sons.
[6] Mineur, Y. S., et al. (2013). Genetic deletion of the glutamate transporter GLT1 alters social behavior and increases vulnerability to social isolation in mice. Translational Psychiatry, 3(3), e230.
[7] Lodén, M., & Wessman, W. (2001). The influence of a cream containing 20% urea and 5% lactic acid on dry, eczematous skin. Acta Dermato-Venereologica,
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