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Chinese date red pigment as well as extraction method and application thereof

An extraction method and pigment technology, applied in chemical instruments and methods, food ingredients as colors, azo dyes, etc., can solve the problem of low product utilization, avoid potential food safety hazards, simplify the extraction process, and improve added value. Effect

Inactive Publication Date: 2017-12-08
LUOYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the development and utilization of jujube is mainly to make dried fruit, fruit wine, jam, etc., and the degree of product utilization is not high.

Method used

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  • Chinese date red pigment as well as extraction method and application thereof
  • Chinese date red pigment as well as extraction method and application thereof
  • Chinese date red pigment as well as extraction method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The invention provides a method for extracting jujube red pigment, comprising the following steps:

[0039] S101: Soaking jujube overnight for 12 hours, then boiling in boiling water for 6 minutes, then placing the boiled jujube in cold water for 30 minutes, then removing the pulp to obtain jujube skin; drying and pulverizing the jujube skin to obtain jujube skin powder.

[0040]S102: Mix jujube skin powder and ethanol according to the ratio of material to liquid: 1g: 25mL, then perform ultrasonic extraction and collect the filtrate; wherein, the temperature of ultrasonic extraction is 80°C, the extraction time is 3h, and the ultrasonic power is 100W; the ultrasonic extraction is performed three times, The filtrates were then combined.

[0041] S103: Concentrate the filtrate to obtain the first extract; then dry the first extract to obtain the primary product of jujube red pigment.

Embodiment 2

[0043] The invention provides a method for extracting jujube red pigment, comprising the following steps:

[0044] S101: Soaking jujube overnight for 12 hours, then boiling in boiling water for 4 minutes, then placing the boiled jujube in cold water for 30 minutes, then removing the pulp to obtain jujube skin; drying and pulverizing the jujube skin to obtain jujube skin powder.

[0045] S102: Mix jujube skin powder and ethanol according to the ratio of material to liquid: 1g: 25mL, then perform ultrasonic extraction and collect the filtrate; wherein, the temperature of ultrasonic extraction is 80°C, the extraction time is 3h, and the ultrasonic power is 100W; the ultrasonic extraction is performed three times, The filtrates were then combined.

[0046] S103: Concentrate the filtrate to obtain the first extract; then dry the first extract to obtain the primary product of jujube red pigment.

[0047] S104: Extract the aqueous sodium bicarbonate solution with a concentration of ...

Embodiment 3

[0050] The invention provides a method for extracting jujube red pigment, comprising the following steps:

[0051] S101: Soaking jujube overnight for 10 hours, then boiling in boiling water for 5 minutes, then placing the boiled jujube in cold water for 30 minutes, removing pulp to obtain jujube skin; drying and crushing jujube skin to obtain jujube skin powder.

[0052] S102: Mix jujube skin powder and ethanol according to the ratio of material to liquid: 1g: 30mL, then perform ultrasonic extraction and collect the filtrate; wherein, the temperature of ultrasonic extraction is 85°C, the extraction time is 2h, and the ultrasonic power is 150W; the ultrasonic extraction is performed three times, The filtrates were then combined.

[0053] S103: Concentrate the filtrate to obtain the first extract; then dry the first extract to obtain the primary product of jujube red pigment.

[0054] S104: Extract the aqueous sodium bicarbonate solution with a concentration of 5% by mass, then...

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Abstract

The invention relates to a Chinese date red pigment as well as an extraction method and application thereof. The extraction method comprises the following steps: after immersing Chinese dates, obtaining Chinese date peel; then crushing the Chinese date peel to obtain Chinese date peel powder; after mixing the Chinese date peel powder and ethanol, carrying out ultrasonic extraction and collecting filtrate; concentrating the filtrate to obtain first extract; then drying the first extract to obtain a Chinese date red pigment primary product; carrying out pH (Potential of Hydrogen) gradient extraction on the primary product and collecting an extracting solution; concentrating the extracting solution to obtain second extract; carrying out vacuum freezing and drying on the second extract to finally obtain the Chinese date red pigment. The extraction method of the Chinese date red pigment, provided by the invention is safe and natural and does not cause toxin and pollution; the extracted Chinese date red pigment has high purity and bright color and luster; the extracted Chinese date red pigment has excellent anti-oxidization and anti-tumor effects and especially has a very good effect on male prostatitis; furthermore, the Chinese date red pigment is used as a food additive, so that food potential safety hazards caused by a traditional pigment additive can be effectively avoided, and the appearance aesthetic feeling and the color and luster of foods are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of food additives, in particular to a jujube red pigment and its extraction method and application. Background technique [0002] In recent years, with the unprecedented improvement of living standards, people pay more and more attention to health, and more and more people question whether the use of synthetic pigments in food will cause harm to human health. At the same time, a large number of studies have shown that almost all synthetic pigments cannot provide nutrients to the human body, and some synthetic pigments may even endanger human health. The safety of pigments has always been a hot spot of concern. Natural plant pigments are more popular than most synthetic pigments with cancer risk. Natural pigments will become indispensable food additives. [0003] Jujube, also known as red jujube and Chinese jujube, is a unique resource in my country. It is rich in nutrients and a variety of trace elements....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/54A23L5/43
CPCC09B61/00A23L5/43A23V2002/00C09B67/0096A23V2200/04
Inventor 刘红霞赵旭升许美秋连佳贝刘圆圆胡云贺
Owner LUOYANG NORMAL UNIV
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