L-aspartic acid has a wide range of uses. L-aspartic acid in the medical can be widely used as potassium and other inorganic ions to add fatigue recovery agent, ammonia antidote and amino acid infusion and other drugs; due to a special sweet, can be used as food additives; Amino acid can be made of polyaspartic acid polymer, used as a scale inhibitor, tackifier and surfactant, etc., but also when the use of non-polluting pesticides.

1. Application in the pharmaceutical industry
Aspartic acid (Aspartic acid) is one of the twenty basic amino acids that make up the protein, which has a wide range of applications in biochemical reagents and clinical medicine. As a non-essential amino acid, it can regulate brain and nerve (L-Asp) is widely used as an additive for ammonia antidote, liver function accelerator, fatigue restorative and other additives for the production of various kinds of soft drinks; its racemic Vitamin DL-Aspartic acid (DL-Asp) can be used to synthesize DL-aspartate magnesium salt (pulse stability) for the treatment of heart rate disorders, tachycardia, heart failure, myocardial infarction, angina pectoris, hepatitis and liver Hardening and other diseases.

Potassium magnesium aspartate (PMA) has a strong cell affinity, as a chelating agent and metal ions combined after the separation of slower. In the absence of potassium and magnesium, PMA can be used as a carrier, to promote potassium and magnesium ions easily into the cells, so as to better play their biological role. In addition, PMA can make heart rate disorders disappear or significantly reduced, the total effective rate as high as 94%. DL-aspartic acid can also be used as a raw material for synthetic peptides, and its amino acid substituted derivatives (NMDLA) can be used as drugs for the treatment of neurological diseases and brain diseases.

2. Application in agriculture
Polyaspartic acid derivatives are easily ingested into the roots of plants in the soil and can absorb and enrich elements useful in the soil around the roots such as N, P, K, Ca, Mg, S, №, Cu and Fe , To promote plant growth, it is applicable to all kinds of soil. In addition to direct application, but also can be used for plant seed coating, with the role of improving the germination rate. Polyaspartic acid is a new generation of fertilizer synergist because of its excellent degradation of polyaspartic acid, which can promote plant growth and reduce surface water pollution due to fertilizers. At the same time as polyaspartic acid has a good insecticidal, sterilization and dispersibility, and thus polyaspartic acid for pesticides, both to protect the plant from pests and diseases, but also with other components of pesticide compound, Surface wetting, dispersion, solubilization and penetration, give full play to the efficacy of pesticides.

3. Application in industry
L-aspartic acid can be prepared as polyaspartic acid derivatives (PASP). C. S. Sikes et al. Used a copolymer of polyaspartate, polyglutamic acid salt and other amino acids to inhibit the precipitation of inorganic and organic calcium carbonate. The copolymer had an optimum molecular weight of 3500 to 10,000 and was biodegradable, It can be used as a scale inhibitor for seawater desalination plants or circulating cooling water. C. S. Sikes et al. Also investigated the resistance of the hydrophobic blocked amino acid (peptide) containing a plurality of anions, which has a block structure consisting of 15 aspartic acid units and 8 alanine units Composition, the least effective peptide has five units, two of which are selected from the ionic amino acid groups, the two blocks together do not exceed 120 units; prepared polysuccinimide and long-chain alkylamine The reaction product, which can act as a surfactant in the cleaning agent.

4. Other aspects of the application
L-aspartic acid can also be prepared into a variety of derivatives in the daily chemical applications, such as moisturizing lotion, shampoo and conditioner, etc .; can also be used in dispersants used in pigments and coatings.