Method for concentrating 5-hydroxyl tryptophan

A technology of hydroxytryptophan and reverse osmosis concentration, applied in the field of concentration of 5-hydroxytryptophan, can solve the problem of high cost of evaporation and concentration, and achieve the effects of large flux, low energy consumption and high yield

Inactive Publication Date: 2010-06-16
XIAMEN STARMEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the shortcomings of the current 5-hydroxytryptophan production method, such as the high cost of evaporation and concentration, and provides an improved 5-hydroxytryptophan concentration method based on the membrane separation technology, so as to achieve the purpose of saving energy and reducing production costs

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  • Method for concentrating 5-hydroxyl tryptophan
  • Method for concentrating 5-hydroxyl tryptophan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 5-hydroxytryptophan extract, 201 kilograms altogether, 5-hydroxytryptophan content is 6.37g / L. First filter through the filter bag; then enter the ceramic membrane system, the selected ceramic membrane pore size is 100nm, the operating pressure is 0.2Mpa, add 25% water for washing and dialysis, and obtain ultrafiltration dialysate 239KG, concentrated solution 10KG, in which 5-hydroxyl in the dialysate The content of tryptophan is 5.30g / L, and the content of 5-hydroxytryptophan in the concentrate is 1.37g / L; finally, the ultrafiltration dialysate enters the reverse osmosis system for concentration, the operating pressure is 2.5Mpa, and the temperature is controlled at 25-40 °C, finally obtained 14.5L of reverse osmosis concentrate and 223L of dialysate, in which the content of 5-hydroxytryptophan in the dialysate was 0.031g / L, and the content of 5-hydroxytryptophan in the concentrate was 86.88g / L. The volume is 17.1LMH, and the concentration factor is 16.5 times. Compar...

Embodiment 2

[0021] 5-hydroxytryptophan extract, 199 kilograms altogether, 5-hydroxytryptophan content is 7.66g / L. First filter through the filter bag; then enter the ceramic membrane system, the pore size of the selected ceramic membrane is 50nm, the operating pressure is 0.3Mpa, add 25% water for washing and dialysis, and obtain 236KG of ultrafiltration dialysate and 11KG of concentrated solution, of which 5-hydroxyl in the dialysate The content of tryptophan is 6.33g / L, and the content of 5-hydroxytryptophan in the concentrate is 2.76g / L; finally, the ultrafiltration dialysate enters the reverse osmosis system for concentration, the operating pressure is 2.8Mpa, and the temperature is controlled at 25-40 °C, finally 15.4L of reverse osmosis concentrate and 219L of dialysate were obtained, wherein the content of 5-hydroxytryptophan in the dialysate was 0.048g / L, and the content of 5-hydroxytryptophan in the concentrate was 96.32g / L. The membrane flux is 15.4LMH and the concentration fact...

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Abstract

The invention discloses a method for concentrating 5-hydroxyl tryptophan. The manufacturing method comprises the steps of pretreatment, ultra-filtrating for clarification and reverse osmosis concentration, wherein in the step of pretreatment, the extract liquid is pre-filtered to remove grains and suspended matters in the liquid in order to protect the reverse osmosis system; in the step of ultra-filtrating for clarification, the pre-treated extract liquid enters the an ultrafiltration membrane system to remove impurities and carry out clarification; and in the step of reverse osmosis, the pre-treated extract liquid enters the reverse osmosis system to be concentrated. The invention has the advantages of high concentration rate, energy-saving, low temperature concentration, no influence on product activity, and the like, thereby reducing the production cost and improving the income obviously.

Description

technical field [0001] The invention relates to a method for concentrating 5-hydroxytryptophan, in particular to a method for concentrating 5-hydroxytryptophan using membrane separation technology. Background technique [0002] 5-Hydroxytryptophan is a natural amino acid, its chemical name is 5-hydroxy-3-indolyl-α-alanine, and its molecular weight is 220.23. It can be found in the protein of many foods, and it can enhance the activity of 5-hydroxytryptamine. This ingredient exists in a small amount in natural protein foods, but the concentration is not high. Naturally occurring L-tryptophan and 5-hydroxytryptophan have traditionally been used as food supplements as an adjunctive treatment for insomnia, depression, obesity and attention-deficit children. At present, there are a number of clinical experimental data on weight control and binge eating disorder, which prove that 5-hydroxytryptophan can effectively control appetite, improve the sensitivity of the satiety center,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D209/20B01D61/02B01D61/14
CPCY02P20/10
Inventor 孙洪贵李振峰罗萍陈洪景虞美辉卢伯福林志华王伟雷细良
Owner XIAMEN STARMEM TECH
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