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Method for extracting pigment in persimmon

An extraction method and pigment technology, which are applied in the field of extraction of natural plant pigments, can solve problems such as low pigment content, and achieve the effects of improving product yield, avoiding changes and shortening extraction time.

Inactive Publication Date: 2015-04-29
桂林得坤生物科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN103013164A discloses a method for extracting natural pigments from persimmon skins, using the peels removed from persimmon production as raw materials, using countercurrent extraction combined with macroporous adsorption resin separation and extraction to separate the persimmon skin pigments, and countercurrent extraction using heated solvents to reverse The raw material of persimmon skin is extracted, and the natural pigment components can be selectively adsorbed by macroporous adsorption resin, but the pigment content obtained by this method is low

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  • Method for extracting pigment in persimmon

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Experimental program
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Effect test

Embodiment 1

[0025] A method for extracting persimmon fruit pigment, comprising the steps of:

[0026] 1) Raw material processing: wash and crush 10kg of persimmons;

[0027] 2) Ultra-high pressure treatment: add 50kg of pure water to the crushed persimmons, pressurize at 350MPa, apply temperature at 50°C, and perform ultra-high pressure treatment for 2 minutes;

[0028] 3) Ultrasonic treatment: The solution obtained in step 2) was subjected to ultrasonic treatment for 8 minutes, the action temperature was 40°C, and the power was 300W;

[0029] 4) Extraction: filter the solution obtained in step 3), and repeatedly extract with ethyl acetate equal to the volume of the filtrate, take the water layer, concentrate in vacuo to remove ethyl acetate, and repeat several times until the ethyl acetate layer is colorless;

[0030] 5) Adsorption and purification of macroporous resin: choose HP-20 macroporous resin, put it on the column by wet method after pretreatment, adjust the pH of the pigment so...

Embodiment 2

[0036] A method for extracting persimmon fruit pigment, comprising the steps of:

[0037] 1) Raw material processing: wash and crush 10kg of persimmons;

[0038] 2) Ultra-high pressure treatment: Add 100kg of pure water to the crushed persimmons, press 350MPa, apply temperature 40°C, and perform ultra-high pressure treatment for 5 minutes;

[0039] 3) Ultrasonic treatment: process the solution obtained in step 2) for 5 minutes with ultrasonic treatment at a temperature of 45°C and a power of 300W;

[0040] 4) Extraction: filter the solution obtained in step 3), and repeatedly extract with ethyl acetate equal to the volume of the filtrate, take the water layer, concentrate in vacuo to remove ethyl acetate, and repeat several times until the ethyl acetate layer is colorless;

[0041] 5) Adsorption and purification of macroporous resin: choose HP-20 macroporous resin, put it on the column by wet method after pretreatment, adjust the pH of the pigment solution to 3.5 with dilute ...

Embodiment 3

[0047] A method for extracting persimmon fruit pigment, comprising the steps of:

[0048] 1) Raw material processing: wash and crush 10kg of persimmons;

[0049] 2) Ultra-high pressure treatment: Add 80kg of pure water to the crushed persimmons, press 350MPa, apply temperature 45°C, and perform ultra-high pressure treatment for 3 minutes;

[0050] 3) Ultrasonic treatment: The solution obtained in step 2) was ultrasonically treated for 10 minutes at a temperature of 50°C and a power of 300W;

[0051] 4) Extraction: filter the solution obtained in step 3), and repeatedly extract with ethyl acetate equal to the volume of the filtrate, take the water layer, concentrate in vacuo to remove ethyl acetate, and repeat several times until the ethyl acetate layer is colorless;

[0052] 5) Adsorption and purification of macroporous resin: choose HP-20 macroporous resin, put it on the column by wet method after pretreatment, adjust the pH of the pigment solution to 3.5 with dilute hydroch...

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Abstract

The invention discloses a method for extracting pigment in persimmon. The method comprises the following steps: raw material treatment, ultrahigh pressure treatment, ultrasonic treatment, extraction, adsorption purification of pigment liquid by virtue of macroporous resin column chromatography, polyamide column chromatography and sephadex column chromatography and separation and purification of persimmon fruit pigment by virtue of preparative liquid chromatography. The water-soluble impurities in the pigment solution can be effectively removed so as to achieve the primary separation of the pigment monomers and thus the separation of the persimmon pigment monomers can be effectively achieved and the product purity is ensured.

Description

technical field [0001] The invention relates to a method for extracting plant natural pigments, in particular to a method for extracting persimmon fruit pigments. Background technique [0002] Natural colors are food colors obtained from natural sources. Pigments mainly extracted from animal and plant tissues and microorganisms (cultivation), among which vegetable colorants account for the majority. Natural pigments not only have the function of coloring food, but also a considerable part of natural pigments have physiological activity. [0003] Persimmon (Diospyros.kaki.L), also known as monkey date, red fruit, persimmon tree is a perennial deciduous fruit tree. Persimmon is a plant of the genus Diospyros.kaki.L in the family Ebenaceae. There are more than 500 species of this genus in the world, most of which are tropical or subtropical plants, and a few are produced in warm temperate regions. Persimmon is a temperate deciduous fruit tree of Persimmonaceae berry class. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54
CPCC09B61/00
Inventor 刘小峰何明茜罗知颂李京生刘二伟
Owner 桂林得坤生物科技股份有限公司
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