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A method for adsorbing and separating lutein by using ultra-high cross-linked resin

An ultra-high cross-linked resin, adsorption separation technology, applied in the biological field, can solve the problems of difficult separation of lutein and low yield, and achieve the effects of reducing waste water discharge, high adsorption capacity, and high adsorption selectivity

Active Publication Date: 2017-07-07
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for separating and extracting lutein, so as to solve the difficult problems of lutein separation and low yield.

Method used

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  • A method for adsorbing and separating lutein by using ultra-high cross-linked resin
  • A method for adsorbing and separating lutein by using ultra-high cross-linked resin
  • A method for adsorbing and separating lutein by using ultra-high cross-linked resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Fully swell 5g of chloromethylstyrene-divinylbenzene resin in 50mL of dichloroethane, add 0.25g of Fourier catalyst AlCl 3 , mechanically stirred and mixed for 0.5h, and the temperature was raised to 75°C at a rate of 1°C / min, and the Friedel-Crafts reaction was carried out for 2h. Rinse alternately until the filtrate is colorless, add 25 mL of acetic anhydride to the washed resin, and react at a temperature of 35° C. After the reaction, vacuum dry to obtain the desired resin. The obtained product was in the form of light brown round granules. The average particle size is 0.45-0.55mm, the water content is 39wt%, the pore size is 1.85nm, the porosity is 25%-35%, and the wet density is 1.08g / cm 3 , the average specific surface area is 875.12m 2 / g, average pore volume 0.755cm 3 / g, the functional group is carbonyl. like figure 1 , the prepared resin was scanned by a scanning electron microscope, and it could be observed that the inner diameter of the resin was 0.465 ...

Embodiment 2

[0045] Fully swell 10g of chloromethylstyrene-divinylbenzene resin in 90mL of dichloroethane, add 0.36g of Fourier catalyst AlCl 3 , mechanically stirred and mixed for 1 hour, the temperature was raised to 100 degrees Celsius at a rate of 2 degrees Celsius / min, and the Friedel-Crafts reaction was carried out for 2.5 hours. Rinse until the filtrate is colorless, add 65 mL of acetic anhydride to the washed resin, and react at a temperature of 45° C. After the reaction, vacuum dry to obtain the desired resin. The obtained product is in the form of light brown round particles, with an average particle size of 0.35-0.65mm, a water content of 40wt%, a pore size of 1.77nm, a porosity of 28%-31%, and a wet density of 1.11g / cm 3 , the average specific surface area is 768.15m 2 / g, average pore volume 0.633cm 3 / g, the functional group is carbonyl. The particle size distribution of the resin can be obtained by a particle size distribution analyzer, such as figure 2 It can be observ...

Embodiment 3

[0049] Fully swell 10g of chloromethylstyrene-divinylbenzene resin in 110mL of dichloroethane, add 0.51g of Fourier catalyst AlCl 3 , mechanically stirred and mixed for 1.25h, and the temperature was raised to 111°C at a rate of 1.5°C / min, and the Friedel-Crafts reaction was carried out for 4h. Rinse alternately until the filtrate is colorless, add 85 mL of acetic anhydride to the washed resin, and react at a temperature of 55° C. After the reaction, vacuum dry to obtain the desired resin. The obtained product is in the form of light brown round particles, with an average particle size of 0.47-0.56mm, a water content of 43wt%, a pore size of 1.78nm, a porosity of 30%-41%, and a wet density of 1.20g / cm 3 , the average specific surface area is 759.36m 2 / g, average pore volume 0.621cm 3 / g, the functional group is carbonyl. like image 3 As shown in the nitrogen adsorption-desorption isotherm, it shows that the adsorption process of the resin to nitrogen belongs to the monol...

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Abstract

The invention discloses a method for adsorbing and separating xanthophyll by utilizing hyper-cross-linked resin. The method comprises the following steps of adsorbing and desorbing a preprocessed xanthophyll saponification solution by an adsorption column which is filled with the hyper-cross-linked resin, and obtaining a xanthophyll solution, wherein the hyper-cross-linked resin is prepared through a Friedel-Crafts cross-linking reaction and an acetic anhydride reaction by taking polystyrene-divinyl benzene as a skeleton, the average grain diameter of the hyper-cross-linked resin is 0.3mm to 0.8mm, the water content is 20 weight percent to 50 weight percent, the pore diameter is 1.5nm to 5.5nm, the porosity is 25 percent to 45 percent, the wet density is 1.05g / cm<3> to 1.18g / cm<3>, the average specific surface area is 500m<2> / g to 950m<2> / g, the average pore volume is 0.542cm<3> / g to 0.985cm<3> / g, and the functional group is the carbonyl group. An adsorption medium adopted by the method disclosed by the invention has the advantages of large xanthophyll adsorption capacity, good adsorption selectivity, gentle desorption conditions, easiness in regeneration, long service cycle and the like.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a method for extracting lutein from a raw material liquid by using an ultra-high cross-linked resin. Background technique [0002] Lutein (also known as: plant lutein), English name lutein, lutein is a kind of carotenoid, is a natural pigment present in various vegetables, fruits, flowers and plants and algae, because of its With the characteristics of high luster, strong tinting power and high nutritional value, it has been widely used in medicine, food health care, feed additives and other aspects. Applications in medicine include: 1) anti-oxidation ability; 2) vision protection; 3) anti-cancer ability; 4) prevention of cardiovascular disease; therefore, lutein can well protect the skin from sunburn and reduce Damaged by radiation from computer screens, TV screens, etc. and excessive UV exposure. At the same time, it can also prevent cardiovascular sclerosis, coronary...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C403/24
CPCC07C403/24
Inventor 应汉杰王莹莹吴菁岚周精卫潘维刚
Owner NANJING TECH UNIV
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