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A kind of green preparation method of water-soluble lutein

A water-soluble lutein and lutein technology, applied in the field of nutritional supplements and natural food colorants, can solve the problems of harmful solvent residues and increase the water solubility of lutein

Active Publication Date: 2020-10-30
JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The problem with the above-mentioned technology is that emulsifiers, surfactants, and stabilizers are often used, and some of them have harmful solvent residues, which bring potential risks to the final product; more importantly, the obtained water-soluble lutein is actually Physically uniformly disperse lutein to form nanoparticles, which are in a nearly water-soluble state
This method improves the all-trans content of the active ingredient in the final product, and it is all amorphous, but still uses organic solvents such as acetone and ethyl acetate, and emulsifiers such as sorbitan ester and Tween 80, and spray drying There is an adverse effect on heat-sensitive lutein, so it is necessary to find a new preparation method or process technology to increase the water solubility of lutein, reduce the loss of lutein during the preparation process, and improve the stability of the trans isomer

Method used

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  • A kind of green preparation method of water-soluble lutein
  • A kind of green preparation method of water-soluble lutein
  • A kind of green preparation method of water-soluble lutein

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Take 5 grams of lutein with a purity of 85.3%, add stevioside according to the mass ratio of 1:5, and mix well; the physical mixture of lutein-stevioside is added according to the solid-liquid ratio of 1:5, and the volume ratio is Stir in 85% ethanol solution for 0.5 minutes; then place it under 120W low-frequency ultrasonic conditions for 15 minutes, control the temperature of the water bath within 25°C; reflux and vacuum concentrate to dryness, and add to the solution containing 0.05% of Fully stir and dissolve ascorbic acid in an aqueous solution; perform dynamic ultra-high pressure micro-jet treatment with a treatment pressure of 124 MPa, and pass once; centrifuge at 3000 rpm for 10 minutes, and vacuum freeze-dry to obtain lutein water-soluble powder, which is packaged in aluminum foil.

[0026] In obtaining the water-soluble lutein powder, the composite rate of lutein reaches 65.4%, and the solubility increases by 163 times. After high performance liquid chromatogra...

Embodiment 2

[0028] Take 10 grams of lutein with a purity of 85.3% and add stevioside according to the mass ratio of 1:10, and mix well; add the physical mixture of lutein-stevioside according to the solid-liquid ratio of 1:10, and add the stevioside at a volume ratio of 100 % ethanol solution and stirred for 1.0 minutes; placed under 180W low-frequency ultrasonic conditions for 15 minutes, and controlled the temperature of the water bath within 25°C; refluxed and concentrated to dryness in a vacuum, and added to the mixture containing 0.01% fan In the aqueous solution of marinic acid, fully stir and dissolve; carry out dynamic ultra-high pressure micro-jet treatment, the treatment pressure is 138MPa, and the number of passes is 1; centrifuge at 3000 rpm for 10 minutes, and obtain lutein water-soluble powder through vacuum freeze-drying, aluminum foil encapsulation.

[0029] In the obtained water-soluble lutein powder, the composite rate of lutein reaches 69.7%, and the solubility increase...

Embodiment 3

[0031] Take 10 grams of lutein with a purity of 90% and add stevioside according to the mass ratio of 1:2, and mix well; add the lutein-stevioside physical mixture according to the solid-liquid ratio of 1:5, and add the volume ratio of 95 % ethanol solution and stirred for 1.0 minutes; placed under 180W low-frequency ultrasonic conditions for 15 minutes, and controlled the temperature of the water bath within 25 ° C; refluxed and concentrated to dryness, and added to the mixture containing 0.05% min In the aqueous solution of marinic acid, fully stir and dissolve; carry out dynamic ultra-high pressure micro-jet treatment, the treatment pressure is 138MPa, and the number of passes is 2 times; centrifuge at 3000 rpm for 5 minutes, and obtain lutein water-soluble powder through vacuum freeze-drying, aluminum foil encapsulation.

[0032]In the obtained water-soluble lutein powder, the composite rate of lutein reaches 65.4%, and the solubility increases by 163 times. After C 30 - ...

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Abstract

The present invention discloses a green preparation method of water-soluble lutein, relates to a processing technology of modifying the lutein from oil-solubility to water-solubility, and belongs to the fields of nutritional supplements and natural food colorants. Mainly by non-covalent combination of the lutein and stevioside molecules and modifications through specific methods and conditions, solubility of the prepared water-soluble lutein is increased by 150 times or more and the water-soluble lutein is good in stability. By low-frequency ultrasound, high-pressure shearing, uses of naturalantioxidants, etc., the method avoids isomerization and degradation of the lutein, so that a proportion of trans-lutein in products is greater than 85%. The water-soluble lutein can be prepared into aplurality of formulations or added to water soluble solvents and a plurality of functional food, and biological activity of the lutein is played. The method does not use auxiliary materials of emulsifiers, surfactants, etc., and the preparation process is free of harmful solvent residues, and has characteristics of green processing conditions, natural raw materials, etc.

Description

technical field [0001] The invention discloses a green preparation method of water-soluble lutein, relates to a technology for modifying lutein from oil-soluble to water-soluble, and belongs to the field of nutritional supplements and natural food colorants. Background technique [0002] Lutein is a plant photosynthetic functional pigment and a functional nutrient that humans can obtain when eating fruits and vegetables. It can protect human eyes from oxidation and high-energy light damage. Studies have found that lutein is the main component of human retinal macular pigment, which can prevent the oxidation of the lens of the eye, prevent macular degeneration of the retina, and reduce the risk of cataracts. In addition, it can also slow down plasma lipid peroxidation, reduce inflammatory factor C-reactive protein and protect DNA from damage. These unique physiological properties of lutein have attracted increasing attention in the research and development of functional food...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L5/44A23L33/00C07C403/24
CPCA23V2002/00A23L5/44A23L33/00C07C403/24A23V2250/262A23V2200/044A23V2200/30
Inventor 宋江峰杨秋明李大婧刘春泉戴竹青肖亚冬黄午阳
Owner JIANGSU ACAD OF AGRI SCI