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Hickory nut shell brown pigment and preparation method thereof

A technology of hickory shell and hickory, applied in the direction of chemical instruments and methods, organic dyes, natural dyes, etc., to achieve high performance, short time, and promote the effect of subsequent enzymatic hydrolysis

Inactive Publication Date: 2013-10-02
HEILONGJIANG VOCATIONAL INST OF ECOLOGICAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no report on the combined use of solvent-ultrasonic-complex enzyme in the extraction of pecan shell pigment in Northeast China

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A method for extracting pecan shell brown pigment is characterized in that preparing according to the following steps:

[0049] (1) Remove impurities from the pecan shell, wash with petroleum ether once, wash for 12 minutes, rinse with water or ethanol, leave at room temperature for 1 hour, and continue drying at 36°C after the residual petroleum ether is completely volatilized. Crushed into 60 mesh powder for use;

[0050] (2) Add the powder into the ethanol-citric acid system according to the material-to-liquid ratio (w / v) of 1:33, fully soak and wet it, and then add cellulase, hemicellulase and pectinase to the extract The amount of enzyme added is 0.02% of the mass of walnut powder, wherein the ratio of cellulase, hemicellulase and pectinase is 4:2:1; wherein, the ethanol-citric acid system is: citric acid is used as the The solute is prepared into a citric acid-ethanol solution with a concentration of 0.1% by using 50% ethanol aqueous solution as a solvent accordi...

Embodiment 2

[0058] A method for extracting pecan shell brown pigment is characterized in that preparing according to the following steps:

[0059] (1) Remove impurities from the pecan shell, wash it once with petroleum ether, wash it for 12 minutes, rinse with water or ethanol, and leave it at room temperature for 1 hour. After the residual petroleum ether is completely volatilized, continue to dry at 36°C and pulverize. Into 60 mesh powder for use;

[0060] (2) Add the powder into the ethanol-citric acid system according to the ratio of material to liquid (w / v) of 1:33, fully soak and wet it, and then add cellulase, hemicellulase, pectinase and The compound enzyme composed of phospholipase, the amount of enzyme added is 0.02% of the mass of walnut powder, wherein the ratio of cellulase, hemicellulase, pectinase and phospholipase is 5:4:4:1; wherein, ethanol-lemon The acid system is as follows: citric acid is used as a solute, 50% ethanol aqueous solution is used as a solvent, and a citr...

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PUM

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Abstract

The invention provides a method of extracting hickory nut shell brown pigment with high performance and high stability and relates to a natural pigment processing technology. The method comprises the following steps: the petroleum ether is adopted to wash hickory nut shells 10 to 15 minutes during pre-processing, so that subsequent enzymolysis is promoted and the extraction efficiency of ultrasonic wave is improved greatly; alcohol-citric acid system prepared at a specific ratio is regarded as efficient extraction solvent; the solvent (alcohol-citric acid system), specific compound enzyme and ultrasonic wave are effectively combined in a creative way and reacted mutually, so that secondary digestion and extraction to residues are not required, the residues is only required to be digested once, and influences to pigment activity caused by secondary extraction are effectively avoided; the whole processing is carried out at the temperature of 35 DEG C to 38 DEG C, so that the pigment activity and stability of the activity are guaranteed, and unexpected technical effects to the inventor are obtained. The method of extracting hickory nut shell brown pigment with high performance and high stability has the advantages that the technology is simple, the operation is easy, the period is short, the complicated equipment is not required, and the product performance is improved obviously; the hickory nut shell brown pigment with high performance and high stability is suitable for industrialized production.

Description

technical field [0001] The invention provides a brown pigment with good purity, high performance and high stability, relates to a natural pigment processing technology, and belongs to the technical field of food chemical processing. Background technique [0002] Edible natural pigments refer to food pigments obtained from natural resources, some are extracted from the edible parts of organisms that have been eaten for a long time; some are extracted from the roots, stems, leaves and fruits of medicinal and edible plants; some are extracted from living organisms extracted from the husk or peel. From the sources of natural pigments, it can be seen that most of the natural pigments are safe and have almost no adverse effects on the human body, and can be used as healthy food colorings. [0003] Heilongjiang Province is very rich in forest resources, with a forest area of ​​24.276 million hectares, ranking first in the country, accounting for 51.3% of the total land area of ​​t...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 秦微微金婷徐丹鸿李德海冯晓阳张衡
Owner HEILONGJIANG VOCATIONAL INST OF ECOLOGICAL ENG