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Method for preparing gardenia pigments from Gardenia jasminoides Ellis

A technology of gardenia pigment and gardenia blue pigment, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve problems such as development lag and weak research foundation, and achieve the goal of reducing production costs and improving the level of comprehensive utilization. Effect

Active Publication Date: 2012-10-17
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the demand for natural pigments in developed countries such as Europe and the United States is growing rapidly, and the usage has reached more than 85%. Especially in Japan, which is most concerned about food safety, more than 90% of colorants used in its food industry are natural pigments. The extraction and application of natural pigments is relatively weak, and the development is relatively lagging behind. The synthetic pigments in the colorants used are more than 80%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Air-dry the gardenia fruit, crush and peel it, put the peeled gardenia kernel into a container, add water 4 times the volume of the gardenia kernel for microwave-assisted extraction twice, each time for 1 hour, the temperature is controlled at 40°C, get the extract;

[0029] 2) Concentrate the extract to 1 / 3 of the volume of the extract to obtain a concentrate;

[0030] 3) Dilute the concentrated solution with 4 times the volume of water, and filter through a 160-mesh filter device to obtain a clarified filtrate;

[0031] 4) At a temperature of 20°C and a flow rate of 0.4BV / h, the filtrate is adsorbed on the macroporous adsorption resin DM301, then washed with 3 times the column volume of distilled water, and then washed with 3 times the column volume of ethanol with a concentration of 5%. off, and receive eluent I;

[0032] 5) Then elute with 3 times column volume concentration of 50% ethanol, and receive eluent II;

[0033] 6) Put the eluent Ⅰ obtained in step 4...

Embodiment 2

[0048] 1) Air-dry the gardenia fruit, crush and peel it, put the peeled gardenia kernel into a container, add 8 times the volume of gardenia kernel to reflux extraction for 3 times, each time for 2 hours, and control the temperature at 50°C to obtain the extracted liquid;

[0049] 2) Concentrate the extract to 1 / 5 of the volume of the extract;

[0050] 3) Dilute the concentrated solution with 5 times of water, and filter it through a 160-mesh filter device to obtain a clarified filtrate;

[0051] 4) At a temperature of 40°C and a flow rate of 4BV / h, the filtrate is adsorbed on the macroporous adsorption resin D101, washed with 6 times the column volume of distilled water, then eluted with 10 times the column volume of 20% ethanol, and received the washed Dehydration Ⅰ;

[0052] 5) Elute with 10 times the column volume of 70% ethanol, and receive eluent II;

[0053] 6) Adsorb the eluent I obtained in step 4) on macroporous adsorption resin D101 at a temperature of 40°C and a...

Embodiment 3

[0068] 1) Air-dry the gardenia fruit, crush and peel it, put the peeled gardenia kernel into a container, add water 4 times the volume of the gardenia kernel to reflux and extract twice, each time for 2 hours, the temperature is controlled at 45°C, and the extraction is obtained liquid;

[0069] 2) Concentrate the extract to 1 / 4 of the volume of the extract;

[0070] 3) Dilute the concentrated solution with 3.5 times of water, and filter through a 160-mesh filter device to obtain a clear filtrate;

[0071] 4) The filtrate was adsorbed on the macroporous adsorption resin AB-8 at a temperature of 30°C and a flow rate of 1BV / h, washed with 3 times the column volume of distilled water, and then eluted with 3 times the column volume of 20% ethanol. And receive eluent I;

[0072] 5) Elute with 3 times the column volume of 60% ethanol, and receive eluent II;

[0073] 6) The eluent I obtained in step 4) was adsorbed on the macroporous adsorption resin DM130 at a temperature of 30°C...

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Abstract

The invention discloses a method for preparing gardenia pigments from Gardenia jasminoides Ellis, and belongs to the technical field of natural pigment preparation methods. The method comprises the following steps: carrying out crushing peeling, extraction, filtration, macroporous resin purification, eluting, concentrating, drying and the like on Gardenia jasminoides Ellis which is a raw material to obtain a gardenia yellow pigment and geniposide, and processing the geniposide through a biological engineering technology and a membrane filtration and acid precipitation process to prepare a gardenia blue or red pigment. The method allows the production cost of the gardenia yellow pigment to be reduced and the comprehensive utilization level of the raw material to be simultaneously improved; and the prepared series pigments can be applied to fields of foods, health products, cosmetics, medicines and the like.

Description

technical field [0001] The invention belongs to the technical field of natural pigment preparation methods, and in particular relates to a method for preparing gardenia yellow pigment, gardenia blue pigment and gardenia red pigment from gardenia. Background technique [0002] Gardenia is the dry and mature fruit of Gardenia jasminoides Ellis (Gardenia jasminoides Ellis), a commonly used clinical traditional Chinese medicine. It is an important bulk of traditional Chinese medicinal materials in China, and is rich in Fujian, Zhejiang, Jiangxi, Hui, Hunan and other provinces. Gardenia yellow pigment is the only natural water-soluble carotenoid pigment extracted from gardenia fruit, which is widely used in medicine, food and cosmetics and other industries. Gardenia blue pigment and gardenia red pigment are natural food colorings made by bioengineering technology. It has been widely used in the coloring of food and cosmetics abroad. [0003] Geniposide is the main active ingre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C12P17/12C12P17/16
Inventor 毛建卫龚金炎杨志祥平丽娟张蕾黄俊徐晖
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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