Specifications
Food Grade:
| Item | AJI92 | USP32 | USP40 |
| Description | White crystals or crystalline powder | --- | --- |
| Identification | Conform | Conform | Conform |
| Assay | 99.0%~100.5% | 98.5%~101.5% | 98.5%~101.5% |
| pH | 5.6~6.1 | 5.6~6.1 | 5.66.1 |
| Transmittance | ≥98.0% | --- | --- |
| Loss on drying | ≤0.20% | ≤0.3% | ≤0.3% |
| Residue on ignition | ≤0.10% | ≤0. 4% | ≤0. 4% |
| Chloride | ≤0.020% | ≤0.05% | ≤0.05% |
| Heavy Metals | ≤10ppm | ≤15ppm | ≤15ppm |
| Iron | ≤10ppm | ≤30ppm | ≤30ppm |
| Sulfate | ≤0.020% | ≤0.03% | ≤0.03% |
| Ammonium | ≤0.02% | --- | --- |
| Other amino acids | Conforms | Conforms | Conforms |
| Pyrogen | Conforms | --- | -- |
| Specific Rotation | +23.0° ~ +25.0° | +22.4º~+24.7º | +22.4º~+24.7º |
Feed Grade:
| L-Methionine | AJI92 | USP32 | USP40 |
| Description | White crystals or crystalline powder | --- | --- |
| Identification | Conform | Conform | Conform |
| Assay | 99.0%~100.5% | 98.5%~101.5% | 98.5%~101.5% |
| pH | 5.6~6.1 | 5.6~6.1 | 5.66.1 |
| Transmittance | ≥98.0% | --- | --- |
| Loss on drying | ≤0.20% | ≤0.3% | ≤0.3% |
| Residue on ignition | ≤0.10% | ≤0. 4% | ≤0. 4% |
| Chloride | ≤0.020% | ≤0.05% | ≤0.05% |
| Heavy Metals | ≤10ppm | ≤15ppm | ≤15ppm |
| Iron | ≤10ppm | ≤30ppm | ≤30ppm |
| Sulfate | ≤0.020% | ≤0.03% | ≤0.03% |
| Endotoxin | --- | --- | --- |
| Ammonium | ≤0.02% | --- | --- |
| Other amino acids | Conforms | Conforms | Conforms |
| Pyrogen | Conforms | --- | -- |
| Hydrolyzable substances | --- | --- | --- |
| Specific Rotation | +23.0° ~ +25.0° | +22.4º~+24.7º | +22.4º~+24.7º |
Pharma Grade:
| Item | USP32 | USP40 |
| Identification | Conform | Conform |
| Assay | 98.5%~101.5% | 98.5%~101.5% |
| pH | 5.6~6.1 | 5.66.1 |
| Loss on drying | ≤0.3% | ≤0.3% |
| Residue on ignition | ≤0. 4% | ≤0. 4% |
| Chloride | ≤0.05% | ≤0.05% |
| Heavy Metals | ≤15ppm | ≤15ppm |
| Iron | ≤30ppm | ≤30ppm |
| Sulfate | ≤0.03% | ≤0.03% |
| Other amino acids | Conforms | Conforms |
| Specific Rotation | +22.4º~+24.7º | +22.4º~+24.7º |
L-methionine (Abbreviated Met) is one of the 18 common amino acids, and one of the eight essential amino acids at the animal and human body. It is mainly used as feed additives in fish, chickens, pigs and cows meal in order to keep animal and fowl growing healthily. It can improve the milk secretion of cows, prevent the occurrence of hepatosis. Besides, it can also be used as amino acid medicines, injection solution, a nutritional infusion, the agent of protective liver, the therapy liver cirrhosis and toxic hepatitis.
L-methionine can be used in the synthesis of medicinal vitamins, nutritional supplements and feed additives.
L-methionine is one of the main components of amino acid infusion and compound amino acid. L-methionine has anti-fatty liver function. Taking advantage of this function, the synthetic medicinal vitamins can be used as liver protection preparations.
As essential amino acid of the human body, L-methionine can be used as a nutritional supplement in food and preservative processing such as fish cake products.
Be added to animal feeds, L-methionine can help animals grow quickly in a short time and about 40% of their feed can be saved.
As an important component in protein synthesis, L-methionine has a protective effect on the heart muscle. At the same time, L-methionine can be converted into Taurine by sulfur, while Taurine has a very obvious hypotensive effect. L-methionine also has a good function for liver protection and detoxification, so it is commonly used in clinical treatment of liver diseases such as cirrhosis, fatty liver and various acute and chronic viral hepatitis. It has a very good effect.
In the life, L-methionine is high in foods such as sunflower seeds, dairy products, yeast, and sea algae.
About Us
Our company is a hi-tech enterprise integrating R & D, production, agency and sales of fine chemicals such as inorganic chemicals, organic chemicals, flavors and fragrances, pharmaceutical raw materials and intermediates. We have established long-term cooperation with many large group companies at home and abroad.
FAQ:
Q1: Can i get some samples?
A: Yes, we can supply the sample, but the shipping cost be paid by our customers.
Q2: How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union or Paypal and so on.
Q3: How to confirm the Product Quality before placing orders?
A:You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
Q4:What's your MOQ?
A:Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q5: How about delivery lead time?
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)
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