Method for preparing gardenia yellow pigment

A technology of gardenia yellow pigment and gardenia, which is applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of restricting the wide application of pigments, easy fading, green change, etc., and achieve simple and stable process routes Good, low production cost effect

Inactive Publication Date: 2004-11-10
中国科学院武汉植物研究所
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Problems solved by technology

[0002] Mastia yellow pigment is a kind of natural water-active carotenoid with strong coloring power. It has many incomparable advanta...

Method used

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Examples

Experimental program
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Embodiment Construction

[0016] The specific implementation steps are as follows:

[0017] 1. Crush 1 kg of dried gardenia fruit and pass through a 10-20 mesh sieve to obtain dried gardenia fruit powder;

[0018] 2. Put the dried gardenia fruit powder into a container, add 5kg of petroleum ether, ultrasonically extract for 30 minutes, filter under reduced pressure to obtain the filtrate and filter residue, repeat this step except "put the dried gardenia fruit powder into the container" and replace it with the above Fill the filter residue inside and outside the container twice, combine the three filtrates, concentrate the filtrate to obtain 0.0605 kg of gardenia fruit oil, and recover petroleum ether;

[0019] 3. Ultrasonically extract the filter residue after the 2-step treatment with 10 kg of 70% ethanol for 30 minutes, filter under reduced pressure to obtain the filtrate and the filter residue, repeat this step except for the "filter residue after the 2-step treatment" and change the filter residue...

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Abstract

The invention discloses a process for preparing gardenin comprising the steps of, A. airing cape jasmine dried fruits, disintegrating and sieving, B. charging petroleum benzene, supersonic extracting, and combining the filter liquor, reclaiming petroleum benzene to obtain vegetable oil, C. ethanol supersonic extracting, filtering, reclaiming ethanol, obtaining ethanol extract, D. eluting the ethanol extract with deionized water, E. depigmenting with ethanol, reclaiming the ethanol to obtain crude gardenin, F. removing impurities with 5% ethanol elution, E. depigmenting with 10% ethanol, concentrating the ethanol, drying and dewatering, thus obtaining gardenin.

Description

technical field [0001] The invention relates to the extraction of gardenia yellow pigment, and more specifically relates to a preparation method of gardenia yellow pigment. Background technique [0002] Mastia yellow pigment is a kind of natural water-active carotenoid with strong coloring power. It has many incomparable advantages, but it has the disadvantages of easy fading and greening in the application process, which limits the wide application of this pigment. The reason for the green change and fading of the yellow pigment of the gardenia yellow is that the gardenia yellow pigment contains geniposide and chlorogenic acid, and the gardenia yellow pigment is prone to produce a blue reaction under the action of protease or β-glucosidase, causing its coloring food Greening, chlorogenic acid is easy to oxidize and darken the colored food. [0003] Because crocetin and crocetin molecules themselves contain multiple unsaturated conjugated double b...

Claims

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Application Information

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IPC IPC(8): C09B61/00
Inventor 袁晓袁萍
Owner 中国科学院武汉植物研究所
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