L-Tryptophan
L-Tryptophan Product Name:L-TryptophanPacking:25kgs/bagCAS NO:73-22-3Molecular Formula:C11h12n2o2Molecular Structure: Physico-chemical properties:White PowderPicture: L-tryptophan is an amino acid, a protein building block that can be found in many plant and animal proteins. L-tryptophan is called an "essential" amino acid because the body can't make it. It must be acquired from food. Application
Tryptophan is an essential amino acid which is the precursor of serotonin. Serotonin is a brain neurotransmitter, platelet clotting factor and neurohormone found in organs throughout the body. Metabolism of tryptophan to serotonin requires nutrients such as vitamin B6, niacin and glutathione. Niacin is an important metabolite of tryptophan. High corn or other tryptophan-deficient diets can cause pellagra, which is a niacin-tryptophan deficiency disease with symptoms of dermatitis, diarrhea and dementia. Inborn errors of tryptophan metabolism exist where a tumor (carcinoid) makes excess serotonin. Hartnup's disease is a disease where tryptophan and other amino acids are not absorbed properly.
Tryptophan supplements may be useful in each condition, in carcinoid replacing the over-metabolized nutrient and in Hartnup's supplementing a malabsorbed nutrient. Some disorders of excess tryptophan in the blood may contribute to mental retardation. Assessment of tryptophan deficiency is done through studying excretion of tryptophan metabolites in the urine or blood. Blood may be the most sensitive test because the amino acid tryptophan is transported in a unique way. Increased urination of tryptophan fragments correlates with increased tryptophan degradation, which occurs with oral contraception, depression, mental retardation, hypertension and anxiety states.
The requirement for tryptophan and protein decreases with age. Adults' minimum daily requirement is 3 mg/kg/day or about 200 mg a day. This may be an underestimation, for there are 400 mg of tryptophan in just a cup of wheat germ. A cup of low fat cottage cheese contains 300 mg of tryptophan and chicken and turkey contain up to 600 mg per pound.
L-tryptophan is in plant auxin biosynthesis important precurssubstances, the structure the IAA similar, in higher plant are common. Can through the tryptophan auxin, there are two synthetic ways: (1) tryptophan first oxidation take off ammonia indoles acetone, to form the decarboxylation form indole acetaldehyde; Acetaldehyde in the corresponding of indoles enzyme catalytic oxidation as final indoles acetic acid. (2) tryptophan decarboxylation, which formed first, then by colamine oxidation take off ammonia acid indoles formation.
L-tryptophan is used for insomnia, sleep apnea, depression, anxiety, facial pain, a severe form of premenstrual syndrome called premenstrual dysphoric disorder (PMDD), smoking cessation, grinding teeth during sleep (bruxism), attention deficit-hyperactivity disorder (ADHD), Tourette's syndrome, and to improve athletic performance. Product NameL-TryptophanBrand NameRongshengSpecification99% L-TryptophanAppearanceWhite Crystal PowderMolecular FormularC11H12N2O2Molecular Weight204.23Specific rotation-29.4°~ -32.8°Assay99%PH5.5-7.0Heavy metal(Pb)≤0.0015%Residue on ignition≤0.1%Loss on drying≤0.3%OdorCharacteristicTasteCharacteristicSulphate SO42-≤0.03%Iron(Fe)≤0.3%Chloride(Cl)≤0.05%SupplierXi'an Rongsheng Biotechnology Co.,LtdPackage1kg/bag, 5kg/bag, 25kg/drumShelf life2 yearsStorageStore in cool dry place,avoid sunlight and high temperature.
Другие товары поставщика
|
|
|
CAS No.:58-56-0MF:C8H11ClNO3Vitamin B6 powderSpecificationsProduct name: Vitamin B6 (Pyridoxine Hcl) 1.Vitamin B6 powder 2.Standard: USP/BP/EP 3.GM... |
|
|
|
Asparagine Monohydrate Product Name:Asparagine MonohydratePacking:25kgs/bagCAS NO:5794-13-8Molecular Formula:C27h18cl3n3oMolecular Structure:Physi... |
|
|
|
CAS No.:9041-08-1MF:(C12H16NS2Na3)20Appearance:White PowderSpecifications1. Product: Heparin sodium 2. Speicfication: EP 7.0, USP 34 3. Reasonable ... |
|
|
|
CAS No.:84-80-0MF:C31H46O2color:Pale yellow to golden yellowSpecifications1)Strict quality contral and best price. 2)be exported to more than 50 co... |
|
|
|
CAS No.:58-27-5MF:C11H8O2Apperance :White powder or similar-white crystalline powderSpecifications1.Competitive price 2. ISO inspection 3.GMP quali... |
Все товары поставщика
Похожие товары
|
|
KLUBER LECTRIC KR 44-102 1KG Grease |
Продавец: Guangdong Juguangheng Automation Equipment Co.,Ltd. |
NSK LR380G/PC 20PC,50PC/Carton
NSK AS280G/PC 20PC,50PC/Carton
NSK LG280G/PC 20PC,50PC/Carton
N... |
|
|
KLUBER ISOFLEX TOPAS NCA52 75G Grease |
Продавец: Guangdong Juguangheng Automation Equipment Co.,Ltd. |
“LUBE FS-2-7 700G”
LUBE FS-2-4 400G
LUBE FS-2-2 200G
LUBE FS-1-7 700G
LUBE MY-2-7... |
|
|
Kluber ISOFLEX TOPAS L 32CN 1KG Grease for Pick and Place Machine |
Продавец: Guangdong Juguangheng Automation Equipment Co.,Ltd. |
NSK LR380G/PC 20PC,50PC/Carton
NSK AS280G/PC 20PC,50PC/Carton
NSK LG280G/PC 20PC,50PC/Carton
N... |
|
|
BQH 72-102 grease 1KG for Pick and Place Machine |
Продавец: Guangdong Juguangheng Automation Equipment Co.,Ltd. |
N990pana-023 Panasonic MP Grease
Kluber Isoflex Nbu 15 Grease
Afc Lubricant K3036c
K48-M3856-0... |
|
|
LDS 18 1kg kluber Lubricants for SMT Machine |
Продавец: Guangdong Juguangheng Automation Equipment Co.,Ltd. |
We are a professional supplier of SMT production line product. We supply various SMT Machine (SMT... |
