| Customization: | Available |
|---|---|
| Powder: | Yes |
| Customized: | Customized |
|
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Item: |
D-Aspartic acid |
|
Specifications: |
500mg 1000mg |
|
Appearence: |
White crystalline powder |
|
OEM: |
Yes |
|
Payment: |
T/T West Union Alibaba Trade Assurance |
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Shelf Time: |
2 year |
|
Storage: |
Keep Dry and Keep away from Sunlight |
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Main Export Country |
The Amercias, Europe, Southeast Asia |
D-Aspartic acid is the basic unit of protein and one of the 21 kinds of amino acids that make up human protein. Except the proline amino acid, which is a sub amino acid, all other amino acids are α amino acid. The amino acids that make up protein molecules are all L-amino acids, but it has been proved in recent years that they can be isomerized into D-amino acids.
ITEM |
STANDARD |
| Appearance | White or almost white crystal or crystalline powder |
| Identification | Positive |
| Melting point | 191 °C ~ 192°C |
| pH (5%, w/v) | 2.2 ~ 2.5 |
| pH (2%,w/v) | 2.4 ~ 2.8 |
| Specific optical rotation | +20.5° ~ +21.5° |
| Clarity of solution | Clear |
| Heavy metals | ≤0.0003% |
| Assay (as C 6H 8O6, %) | 99.0 ~ 100.5 |
| Copper | ≤3 mg/kg |
| Iron | ≤2 mg/kg |
| Mer | ≤1 mg/kg |
| Arsenic | ≤2 mg/kg |
| Lead | ≤2 mg/kg |
| Oxalic acid | ≤0.2% |
| Loss on drying | ≤0.1% |
| Sulphated ash | ≤ 0.1% |
| Residual solvents | ≤ 500 mg/kg |
| Total plate count (cfu/g) | ≤ 1000 |
| Yeasts & molds (cfu/g) | ≤ 100 |
| Escherichia. Coli/g | Absence |
| Salmonella/ 25g | Absence |
| Staphylococcus aureus/ 25g | Absence |
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D-Aspartic acid is widely used in medicine, food and chemical industry.
In medicine, it can be used to treat heart disease, liver disease, hypertension, prevent and recover fatigue. Together with a variety of amino acids, it can be made into amino acid infusion, used as an antidote, liver function promoter and fatigue recovery agent.
In the food industry, it is a good nutritional supplement, added to various cool drinks; It is also the main raw material of the sweetener (aspartame) - aspartyl phenylalanine methyl ester.
In the chemical industry, it can be used as a raw material for manufacturing synthetic resins. It can also be used as a nutritional additive for cosmetics.
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