Properties, uses and production process of L-leucine (CAS 61-90-5)
The physicochemical properties of L-leucine (CAS 61-90-5)
L-leucine is a white crystal or crystalline powder. It is a nonpolar amino acid with a slight bitterness. Soluble in water, acetic acid (10.9 g/L), dilute hydrochloric acid, alkali solution and carbonate solution, slightly soluble in ethanol, insoluble in ether. Sublimation at 145°C-148°C. The melting point is 293°C-295°C.
- Product Name: L-leucine
- CAS No.: 61-90-5
- Packing: Kraft paper bag or paper bucket packing, the net content of each bag (bucket) is 25 kg, and it can also be packed according to users’ needs.
- Transportation: Light load and light unloading to prevent packaging from breakage. It can not be transported with toxic or harmful substances. It is a non dangerous product.
- Storage: The product should be stored in a cool, dry, clean and shading environment. It is forbidden to mix with toxic or harmful substances so as not to pollute.
What are the functions and uses of L-leucine (CAS 61-90-5)?
L- leucine can promote insulin secretion and reduce blood sugar. Promoting sleep, reducing sensitivity to pain, alleviating migraine, alleviating anxiety and tension, alleviating the symptoms of chemical reactions in the body caused by alcohol and helping to control alcoholism. It can help treat dizziness and promote healing of skin wounds and bones. Therefore, doctors usually advise patients to take leucine supplements after surgery. L-leucine is often used to prepare amino acid infusion and comprehensive amino acid preparation for treatment or health care. It can also be used as an additive in food, cosmetics and feed. Used for plant growth accelerators.
Production process of L-leucine (CAS 61-90-5)
- Concentrating procedure
Raw material: steam
A mother liquor is pumped into the concentrating tank, and the steam is heated at 120°C, the air pressure is -0.09MPa, the concentration time is 6h, and the crystallization is achieved.
End product: crystallizing fluid (Go to primary neutralization)
- Primary neutralization procedure
Auxiliary materials: sulphuric acid, pure water
The crystallizing liquid enters a neutralization tank, and adding sulphuric acid and pure water. The temperature is 80℃, and the neutralization time is 4 hours. Filtration.
End product: filtrate (recycling), filter residue (Go to ammonolysis procedure
- Ammonolysis procedure
Auxiliary materials: ammonia, pure water, steam
The filter residues enter ammonolysis tank, and adding ammonia water, pure water and steam. The temperature is 80℃, and the ammonolysis time is 3 hours. Filtration.
End product: filtrate (recycling), filter residue (Go to decolorization segment) (cystine)
- Decolorization segment
Auxiliary materials: steam, pure water, activated carbon
The filter residues enter decolorization tank, and adding steam, pure water and activated carbon. The temperature is 80℃, and the decolorization time is 2 hours. Filtration.
End product: filter residue (recycling), filtrate (Go to two-step neutralization procedure)
- Two-step neutralization procedure
Auxiliary materials: ammonia, steam
The filtrate enter two-step neutralization tank, and adding ammonia, steam. The temperature is 80℃, and the neutralization time is 4 hours. Filtration.
End product: filtrate (recycling), filter residue (Crude L-leucine goes to refining procedure.)
- Refining procedure
Auxiliary materials: distilled water, steam (histidine hydrochloride)
Rinse the upper process product with distilled water and centrifuge dry. Feed into dryer, steam drying. Packing, warehousing. The drying temperature is 100℃ and the drying time is 3 hours.
End product: L-leucine finished product
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