Levodopa powder is the precursor of dopamine, and it is the most commonly used drug name in the world. Different manufacturers have different trade names when they are listed on the market. Oral levodopa tablets are generally disintegrated, dissolved in the stomach, discharged to the duodenum, and then to the small intestine. They are absorbed into the blood at the upper end of the small intestine. It is taken up by substantia nigra nerve cells or other nerve cells. Under the action of dopa decarboxylase, a carboxyl group is removed to become dopamine, thereby supplementing the dopamine in the brain and reducing the symptoms of Parkinson's disease.
Dopa is contained in some legumes and can be oxidized and polymerized under the action of oxidase to generate melanin. The pods of some legumes turn black as they mature. Human and animal hair, squid ink, watermelon seed coat and other melanin also belong to this type of melanin. Amino acids and levodopa powder can be extracted from quinoa seeds (Mucunasempervirens Hemsl). The extraction method is as follows: pulverize the quinoa beans, and remove three times at room temperature with a mixture of 30% ethanol and 0.1% acetic acid at room temperature, 24 hours each time. Filter to get the extract. The extract was concentrated under reduced pressure (21.3kPa), and crystals were precipitated, left standing at 0-10°C overnight, filtered through Chemicalbook and crude levodopa. The natural product was dissolved with 1N hydrochloric acid, filtered with activated carbon, neutralized the filtrate with a small amount of vitamin C with 2N ammonia water to pH 3.5, and a large number of crystals were formed precipitated. 0-10 ℃ stand for 4h, filter. The filter cake was washed twice with distilled water containing a small amount of vitamin C and washed with acetone once. 60-70 ℃ drying to obtain levodopa. Based on soybean flour, the yield is about 2%. L-dopa can also be obtained by oxidation of L-tyrosine. The tyrosine was dissolved in formic acid phosphoric acid; the temperature was raised to 40 °C for 12 h and then diluted with 20 times of distilled water. The diluent absorbs unreacted tyrosine through a strongly acidic styrene-based cation exchange resin and then undergoes a post-slicing operation to obtain a finished product. If you need wholesale levodopa powder, please keep us up for a quote.
