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74 results about "5-Hydroxytryptophan" patented technology

5-Hydroxytryptophan (5-HTP), also known as oxitriptan, is a naturally occurring amino acid and chemical precursor as well as a metabolic intermediate in the biosynthesis of the neurotransmitter serotonin.

Production process for extracting and preparing high-purity 5-hydroxytryptophan from Griffonia simplicifolia

The invention provides a production process for extracting and preparing high-purity 5-hydroxytryptophan from Griffonia simplicifolia, belonging to the technical content of extracting 5-hydroxytryptophan from plants and solving the problems of low yield, low purity and influence on product quality, low extraction speed and the like due to variegation generated by other pigment in the process of extracting 5-hydroxytryptophan from plants in the prior art. The production process comprises the following steps: using Griffonia simplicifolia produced in Africa as raw material, carrying out supercritical extraction for degreasing, extracting the degreased material for 3-5 times by using water or alcoholic solvents or mixed solution of water and alcoholic solvents; merging the extraction solution, carrying out microfiltration, ultrafiltration, adsorption by using ion exchange resin, elution, vacuum concentration, lower-temperature crystallization, centrifugal separation and microwave drying to obtain high-purity 5-hydroxytryptophan dry powders. The process has the advantages of rapidness, high efficiency, high yield, good quality and the like, and is suitable for large-scale industrial production; and the purity of the obtained product can reach more than 99.5 percent, and the yield is more than 90 percent.
Owner:三明华健生物工程有限公司

Method for extracting 5-hydroxytryptophan

InactiveCN102464602AReduce the frequency of depigmentationReduce the number of crystallizationOrganic chemistryAntioxidantIon exchange
The invention relates to a method for extracting 5-hydroxytryptophan. The method has the advantages that: the yield of the product is improved and the energy consumption is reduced because an antioxidant is added to protect and an ion exchange resin and a macroporous resin are combined. The method comprises the following steps of: crushing a raw material, namely griffonia seeds, soaking the raw material into acidic water and sodium pyrosulfite for extraction for 2 to 3 times, wherein the amount of the acidic water and the amount of the sodium pyrosulfite are both 8 to 15 times that of the raw material and the raw material is soaked for 4 to 10 hours at each time, adsorbing the extract by adding the extract into a cation exchange resin column, washing the extract with deionized water until the extract is colorless, eluting the extract with aqueous ammonia (containing 0.1 to 0.3 percent of sodium metabisulfite) of which the concentration is 10 to 15 percent, adjusting the pH value of the eluate to 2 to 4, adsorbing the eluate by adding the eluate into a macroporous resin column, washing the eluate with water until the eluate is neutral, eluting the effective component with 4-6 BV ethanol solution of which the concentration is 40 to 60 percent, collecting the eluate, adding the eluate into active carbon to decolor the eluate, reclaiming the ethanol, concentrating the decoloring liquid until the concentration of the decoloring liquid is 1.4 to 1.6, placing the decoloring liquid until the decoloring liquid is crystallized, filtering the crystal, and drying the crystal to obtain the product. The method is simply operated and is suitable for industrial production.
Owner:苏州宝泽堂医药科技有限公司
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