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Preparing method of gardenia yellow pigment

A technology of gardenia yellow pigment and gardenia, which is applied in the field of extraction and purification of gardenia yellow pigment, can solve the problems of high solubility, low solubility, strong hydrophilicity, etc., and achieve the effect of high potency

Inactive Publication Date: 2010-07-07
烟台开发区绿源生物工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Gardenia yellow pigment is a yellow pigment extracted from gardenia fruit. It is a rare water-soluble carotenoid pigment in nature. It is a natural pigment. Its main component is crocetin, which has a maximum absorption peak at a wavelength of 440nm. , containing many oxygen-containing groups, weak lipophilicity, strong hydrophilicity, low solubility in petroleum ether, high solubility in alcohol and methanol, so organic solvents are used as extraction agents, but the extraction process is time-consuming and requires The amount of solvent is large, and there are many impurities brought in, which brings a lot of trouble to the purification process, and the obtained gardenia yellow pigment has low purity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, preparation gardenia yellow pigment

[0018] Weigh 50kg gardenia fruit, crush through a 60-mesh sieve, and transport the obtained powder to the feeder of GDC-TQ / 6 continuous pipeline ultrasonic extraction machine at a uniform speed of 2.5kg / min according to the feed rate. The feeder enters the extraction tube, and 250L of 50° C. 60% (volume percentage) ethanol aqueous solution enters the extraction tube at a flow rate of 10 L / min for continuous dynamic countercurrent extraction, countercurrent extraction for 35 minutes, and filtration to obtain filtrate and filter residue. Squeeze the filter residue dry, and merge the squeezed liquid into the filtrate. The combined filtrate is microfiltered with a titanium microporous tubular filter, and the filtrate is concentrated in vacuum. The macroporous resin column was washed several times, and eluted with 60% (volume percent) ethanol aqueous solution, and the eluate was concentrated in vacuum and spray-dried to obt...

Embodiment 2

[0027] Embodiment 2, preparation gardenia yellow pigment

[0028] Weigh 50kg gardenia fruit, crush through a 60-mesh sieve, and transport the obtained powder to the feeder of GDC-TQ / 6 continuous pipeline ultrasonic extraction machine at a uniform speed of 2.5kg / min according to the feed rate. The feeder enters the extraction tube, and 300L of 47°C 50% (volume percentage) ethanol aqueous solution enters the extraction tube at a flow rate of 10L / min for continuous dynamic countercurrent extraction, countercurrent extraction for 45 minutes, and filtration to obtain filtrate and filter residue. Squeeze the filter residue dry, and merge the squeezed liquid into the filtrate. The combined filtrate is microfiltered with a titanium microporous tubular filter, and the filtrate is concentrated in vacuum. Wash the macroporous resin column several times, elute with 50% (volume percent) ethanol aqueous solution, and vacuum concentrate and spray dry the eluate to obtain an orange-yellow pow...

Embodiment 3

[0037] Embodiment 3, preparation gardenia yellow pigment

[0038] Weigh 50kg gardenia fruit, crush through a 60-mesh sieve, and transport the obtained powder to the feeder of GDC-TQ / 6 continuous pipeline ultrasonic extraction machine at a uniform speed of 2.5kg / min according to the feed rate. The feeder enters the extraction tube, and 350L of 53°C 40% (volume percentage) ethanol aqueous solution enters the extraction tube at a flow rate of 10L / min for continuous dynamic countercurrent extraction, countercurrent extraction for 35 minutes, and filtering to obtain filtrate and filter residue. Squeeze the filter residue dry, and merge the squeezed liquid into the filtrate. The combined filtrate is microfiltered with a titanium microporous tubular filter, and the filtrate is concentrated in vacuum. The macroporous resin column was washed several times, and eluted with 60% (volume percent) ethanol aqueous solution, and the eluate was concentrated in vacuum and spray-dried to obtain ...

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Abstract

The present invention discloses a preparing method of gardenia yellow pigment, which comprises the following steps: powder of gardenia fruit after being crashed is extracted in ethanol water in a super-sound reverse current way; filter liquid and filter residue are obtained by filtering after being extracted; the filter liquid is processed in a micro-filtration way, and then, is purified by macroporous resin to obtain gardenia yellow pigment solution; the ethanol content in the ethanol water is 40 % to 60%; a ratio of the powder to the ethanol water is 1kg to (5-7) L; and the temperature of the ethanol water is 47 to 53 DEG C. The titer of the gardenia yellow pigment obtained by the preparing method of gardenia yellow pigment is high.

Description

technical field [0001] The invention relates to a method for extracting and purifying gardenia yellow pigment. Background technique [0002] Food coloring is divided into artificial synthetic coloring and natural coloring. Synthetic pigments have the advantages of uniform quality, bright color, strong tinting power, good stability, easy dissolution and color matching, and low cost. However, most synthetic pigments are toxic, and may even cause serious consequences such as carcinogenicity and teratogenicity. Therefore, some countries have successively A series of regulations restricting the use of synthetic pigments have been enacted, and the use of synthetic pigments has even been banned in developed countries. Therefore, natural pigment is just more and more subject to people's attention. [0003] Gardenia yellow pigment is a yellow pigment extracted from gardenia fruit. It is a rare water-soluble carotenoid pigment in nature. It is a natural pigment. Its main component i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00
Inventor 王芳
Owner 烟台开发区绿源生物工程有限公司
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