Method for extracting and using two natural pigments in gynura bicolor

A technology of Tiankui Tiankui and natural pigments, applied in natural dyes, chemical instruments and methods, applications, etc., can solve the problems of single color tone, dark color, low utilization rate, etc., and achieve the effect of high safety and bright color.

Inactive Publication Date: 2015-11-18
SUGARCANE RES INST FUJIAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are products in which anthocyanins and chlorophyll are mixed together, but such products are dark in color and po

Method used

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  • Method for extracting and using two natural pigments in gynura bicolor
  • Method for extracting and using two natural pigments in gynura bicolor
  • Method for extracting and using two natural pigments in gynura bicolor

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Embodiment 1: choose dark green on the front, dark purple purple-backed geranium variety on the back side as material, when the variety purple-backed geranium grows to about 20cm, harvest the top tender stems and leaves with a length of about 16cm, and use boiling water to boil after cleaning 12 minutes, wherein the mass ratio of the amount of water used to G. chinensis is 4:1, the resulting aqueous solution is an anthocyanin-rich liquid, and the rest of G. chinensis is directly dried and pulverized with a pulverizer to obtain chlorophyll-rich powder . The anthocyanin-rich liquid and chlorophyll-rich powder can be directly used in staple foods, cakes, cold drinks and beverages. Or by mixing different proportions of anthocyanin-rich liquid and chlorophyll-rich powder to form food or beverages of different colors.

Embodiment 2

[0019] Embodiment 2: choose the front dark green, the dark purple purple-backed geranium variety on the back as material, and when the variety grows to about 20cm, harvest the top tender stems and leaves with a length of about 16cm, and use them in 2 times after washing Boil in boiling water, wherein the mass ratio of the water used for the first time to G. chinensis is 4:1, boil in boiling water for 5 minutes, pour out the obtained anthocyanin-rich aqueous solution, and boil again with the same volume of boiling water for 7 minutes, twice The obtained aqueous solution is rich in anthocyanins with different concentrations, and the remaining geranium chinensis is directly dried and pulverized with a pulverizer to obtain a powder rich in chlorophyll. The anthocyanin-rich liquid and chlorophyll-rich powder can be directly used in staple foods, cakes, cold drinks and beverages. Or by mixing different proportions of anthocyanin-rich liquid and chlorophyll-rich powder to form food o...

Embodiment 3

[0020] Embodiment 3: choose the front dark green, the dark purple purple-backed geranium variety on the back side is material, when this kind of purple-backed geranium grows to about 20cm, harvest the top tender stems and leaves with a length of about 16cm, and use boiling water to boil after cleaning 15 minutes, wherein the mass ratio of the amount of water used to G. chinensis is 8:1, and the resulting aqueous solution is an anthocyanin-rich liquid, and the anthocyanin liquid is further purified, concentrated and dried to obtain high-purity anthocyanins. The remaining geranium purple back is lyophilized and ultrafinely pulverized to obtain a chlorophyll-rich powder. The anthocyanins and chlorophyll obtained by the method can be stored at 4° C. or below for a long time (within 3 months), so as to be used as food additives.

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Abstract

The invention discloses a method for extracting and using two natural pigments in gynura bicolor. The method includes the steps that a gynura bicolor variety with invisible green front faces and parma back faces is selected as a material, when the gynura bicolor variety grows to 20+/-2 cm, top tender stem leaves with the length of 16+/-2 cm are harvested, the tender stem leaves are boiled in boiling water for 12-15 min after being cleaned, wherein the ratio of the usage amount of water to the weight of the gynura bicolor is 4-8:1, and then a water solution rich in anthocyanin is obtained; the remaining gynura bicolor is directly dried and pulverized to obtain powder rich in chlorophyll; the water solution rich in anthocyanin and the powder rich in chlorophyll are directly used in staple food, cakes, cold drinks and beverages. The water solution rich in anthocyanin is further purified, concentrated and dried to obtain high-purity anthocyanin so that the anthocyanin can be stored for a long time for standby application. The separated chlorophyll and anthocyanin of the gynura bicolor are bright in color and luster, have an excellent visual angle effect, and are suitable for the requirement of development of the modern food industry as additives.

Description

technical field [0001] The invention belongs to the technical field of natural pigment production, and in particular relates to a method for extracting and utilizing two natural pigments in geranium purple-backed. Background technique [0002] Additive pigments such as food and beverages that people eat daily are divided into natural pigments and artificial synthetic pigments. Almost all the pigments used as food coloring agents on the market are artificial pigments. With the deepening of research, it is found that most of the artificial coloring food additives have side effects, and some synthetic colorings may even cause cancer if eaten too much, while most of the natural colorings have high safety and multiple functions such as nutrition and health care. Currently, new varieties are being developed. Natural pigments are an urgent need for the development of the modern food industry, and the purple-backed geranium is dark green on the front and deep purple on the back, an...

Claims

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Application Information

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IPC IPC(8): C09B61/00C07D311/62C07D487/22A23L1/275
CPCC09B61/00A23V2002/00C07D311/62C07D487/22
Inventor 张少平刘荣章郑开斌邱珊莲郑加协
Owner SUGARCANE RES INST FUJIAN ACAD OF AGRI SCI
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