Method for purifying peony seed shell pigment by using macroporous resin

A technology of peony seed shell and macroporous resin, which is applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of refining the purification method of macroporous resin and so on.

Inactive Publication Date: 2016-10-26
翟益彤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above two methods have all adopted the method of macroporous adsorption resin pur...

Method used

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  • Method for purifying peony seed shell pigment by using macroporous resin

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Experimental program
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Effect test

Embodiment 1

[0031] Weigh 5g peony seed shell powder as raw material (through a 60-mesh sieve), add 175ml of ethanol solution with a concentration of 50% (that is, the ratio of liquid to material is 1:35), and place it in an ultra-high pressure environment of 200Mpa, and the continuous holding time is After 15 minutes, the obtained material was filtered to obtain a pigment filtrate, and then the filtrate was rotary evaporated to remove the extractant ethanol and part of the water, and evaporated to 1 / 2 of the volume of the original filtrate to obtain a peony seed shell pigment concentrate. Take by weighing 1.00g peony seed shell powder, join in the 50% ethanol solution of 40ml, extraction pressure is 200MPa, and holding time is 20min, observe the color of extract solution, filter extract solution, and its constant volume to 50ml. The absorbance value at 380-620nm was measured with an ultraviolet spectrophotometer, and the optimum absorption wavelength of the extracted pigment was determine...

Embodiment 2

[0038] Weigh 5g of peony seed shell powder as raw material (through 80 mesh sieve), add 200ml of ethanol solution with a concentration of 50% (that is, the ratio of liquid to material is 1:40), and place it in an ultra-high pressure environment of 200Mpa, and the continuous holding time is After 20 minutes, the obtained material was filtered to obtain a pigment filtrate, and then the filtrate was rotary evaporated to remove the extractant ethanol and part of the water, and evaporated to 1 / 3 of the original filtrate to obtain a peony seed shell pigment concentrate. Take by weighing 1.00g peony seed shell powder, join in the 50% ethanol solution of 40ml, extraction pressure is 200MPa, and holding time is 20min, observe the color of extract solution, filter extract solution, and it is settled to 50ml. The absorbance value at 380-620nm was measured with an ultraviolet spectrophotometer, and the optimum absorption wavelength of the extracted pigment was determined to be 520nm. In s...

Embodiment 3

[0045] Weigh 5g peony seed husk as raw material (through a 100-mesh sieve), add 225ml of ethanol solution with a concentration of 50% (that is, the ratio of liquid to material is 1:45), and place it in an ultra-high pressure environment of 200Mpa, and the continuous pressure holding time is After 25 minutes, the obtained material was filtered to obtain a pigment filtrate, and then the filtrate was rotary evaporated to remove the extractant ethanol and part of the water to obtain a peony seed shell pigment concentrate. Take by weighing 1.00g peony seed shell powder, join in the 50% ethanol solution of 40ml, extraction pressure is 200MPa, and holding time is 20min, observe the color of extract solution, filter extract solution, and its constant volume to 50ml. The absorbance value at 380-620nm was measured with an ultraviolet spectrophotometer, and the optimum absorption wavelength of the extracted pigment was determined to be 520nm, and the absorbance of the pigment solution wa...

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Abstract

The invention belongs to the technical field of extraction of natural pigment, and particularly relates to a method for purifying peony seed shell pigment by using macroporous resin. According to the technical scheme, the method comprises the following process steps: peony seed shell collecting, drying, pulverizing and sieving, ultra-high-pressure extracting, filtering to obtain filtrate, rotary evaporation to obtain concentration liquor, resin pretreatment, resin static screening, extraction liquid and resin dynamic adsorption, ethanol dynamic elution, and vacuum drying of eluant to obtain the finished product. By spectral characteristics and comparison of color values before and after purification, the original ingredients and characters of the pigment are proved to be retained well in a purification process, and the color value is increased.

Description

technical field [0001] The invention belongs to the technical field of natural pigment extraction, and in particular relates to a method for purifying peony seed shell pigment by using a macroporous resin. Background technique [0002] Peony is a plant of Ranunculaceae and Paeonia genus, which is a small perennial deciduous shrub. The flowers are bright in color, fragrant with jade smiles and pearls, romantic and unrestrained, magnificent, known as the "king of flowers". At present, the utilization of peony seeds is mainly focused on extracting oil for food, medicine and industry, and the remaining seed residues are used as feed and fertilizer. However, the peeled peony seed shell contains a variety of natural ingredients, which need to be comprehensively developed and utilized, especially the high content of natural pigments. As a food colorant, peony seed shell pigment has strong coloring power, safety, non-toxicity and stable properties. It can be widely used in the pro...

Claims

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Application Information

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IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00C09B67/0096
Inventor 翟益彤
Owner 翟益彤
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