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Method for extracting gardenia yellow pigment from gardeniae longicarpae fruit

A technology of gardenia yellow pigment and water gardenia, applied in chemical instruments and methods, azo dyes, organic dyes, etc., to achieve the effect of good product purity, short process route and simple operation

Active Publication Date: 2012-02-08
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mechanical force-assisted extraction technology is expected to completely replace the traditional extraction technology, but there is no report on the extraction of gardenia yellow pigment using this technology

Method used

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  • Method for extracting gardenia yellow pigment from gardeniae longicarpae fruit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Put 10g of dried water gardenia fruits with a moisture content of 9% into a ball mill together with 1.0g of sodium carbonate, and ball mill at a speed of 1920rpm for 5min; take out the ball mill powder, add 110g of water to the obtained ball mill powder, and stir at 50°C for 60min; filter , take the supernatant, pass through the HPD-100 macroporous resin chromatography column, elute with 80wt% ethanol aqueous solution of 2 times the column volume, collect the eluate, concentrate, evaporate the solvent, and dry to obtain 0.50 g of gardenia yellow pigment, The yield of the product is 5%, the color value is 370, and the OD value is 0.36.

Embodiment 2

[0035] Put 10 g of dried water gardenia fruits with a moisture content of 9% into a ball mill together with 20 g of sodium bicarbonate, and ball mill for 60 min at a speed of 2220 rpm; take out the ball mill powder, add 300 g of water to the obtained ball mill powder, and stir for 5 min at 30° C.; filter , take the supernatant, put it on HPD-450 macroporous resin chromatography column, elute with 60wt% ethanol aqueous solution of 10 times the column volume, collect the eluate, concentrate, evaporate the solvent, and dry to obtain 0.46g of gardenia yellow pigment, The yield of the product is 4.6%, the color value is 395, and the OD value is 0.31.

Embodiment 3

[0037] Put 10g of dried water gardenia fruits with a water content of 9% into a ball mill together with 5g of potassium bicarbonate, and ball mill at a speed of 2220rpm for 15min; take out the ball mill powder, add 75g of water to the obtained ball mill powder, and stir at 45°C for 50min; filter , take the supernatant, put it on a HPD-600 macroporous resin chromatography column, elute with 60wt% ethanol aqueous solution of 8 times the column volume, collect the eluate, concentrate, evaporate the solvent, and dry to obtain 0.53g of gardenia yellow pigment, The yield of the product is 5.3%, the color value is 356, and the OD value is 0.41.

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Abstract

The invention discloses a method for extracting gardenia yellow pigment from a gardeniae longicarpae fruit, which comprises the following steps of: feeding gardeniae longicarpae fruit powder and a solid-phase reagent in a ball grinding mill for ball milling to be uniform; taking out powder formed by ball milling; adding water in the powder formed by ball milling; fully stirring and uniformly mixing, filtering and obtaining supernate; feeding the supernate to a macroporous resin chromatography column; eluting with 60 percent by weight of ethanol aqueous solution; collecting an eluent; condensing and evaporating to remove a solvent; drying and feeding the mixed solution to pass through the macroporous resin chromatography column; condensing and evaporating to remove the solvent; and drying to obtain the gardenia yellow pigment. The method disclosed by the invention is based on an extraction technology of mechanochemical reactions; and the solid-phase reagent used by the method can be selectively combined with the gardenia yellow pigment. Compared with a traditional extraction technology, the extraction rate and the purity of products can be improved by 10-20 percentage points.

Description

(1) Technical field [0001] The invention relates to a method for extracting gardenia yellow pigment. (2) Background technology [0002] Natural food coloring is an important food additive, which has good safety, no toxic side effects, and certain physiological activity, and occupies an important position in food coloring. In recent years, the growth rate of sales of natural food coloring in the international market has remained above 10%, and the market prospect is promising. Gardenia yellow pigment is one of the main components of Rubiaceae plant Gardenia jasminoides. It is a natural water-soluble pigment widely used at present. Its main coloring components are Crocin and Crocetin. It also contains a small amount of iridoid glycosides, flavonoids, chlorogenic acid and other ingredients. Gardenia yellow pigment is non-toxic, high in safety, has certain nutritional value and health care function, and also has the characteristics of good water solubility, strong coloring pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09B61/00C09B67/10
Inventor 朱兴一苏为科王平李峰汪菊娟谢捷
Owner ZHEJIANG UNIV OF TECH
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