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Method for extracting rose flavone from rose residue solution

A technology of rose dregs and rose petals, applied in chemical instruments and methods, azo dyes, organic dyes, etc., can solve the problems of lack of product purification and separation process, limited product use, high impurity content of products, etc., and achieve low cost and high Extraction rate, effect of improving purity

Active Publication Date: 2014-02-19
银谷芳香科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this patent, methanol, petroleum ether or ethyl acetate are also used as solvents, which can improve the extraction rate, but the obtained products contain these toxic and harmful solvents more or less, which limits the use of the product
The patent lacks a purification and separation process for the product, and the obtained product has a high impurity content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] Preparation of the reference substance solution: Weigh 100 mg of the rutin reference substance, add 1 mL of methanol to dissolve it, and prepare the reference substance solution.

[0040] Preparation of the test product solution: Weigh 100 mg of rose flavonoids, add 1 mL of methanol to dissolve it, and prepare the test product solution.

[0041] Measuring method: Take 5ul of the above two solutions, spot them on the same silica gel thin-layer plate respectively, use n-butanol: glacial acetic acid: water = 4:1:2 as the developing agent, develop, take out and dry, and spray 1% three Aluminum chloride ethanol solution, dried, and inspected under a 365nm ultraviolet lamp; at the position corresponding to the chromatogram of the rutin reference substance, spots of the same color appear.

[0042] Method for the quantitative determination of rose flavonoids by ultraviolet-visible spectrophotometry:

[0043] Preparation of the reference substance solution: Accurately weigh 5 g...

Embodiment 1

[0047] Extract flavonoids from rose residue: add 250-350kg of water to 300kg fresh flowers, steam to extract rose essential oil, press filter the flower residue after extracting rose essential oil, centrifuge the filtrate at 3000r / min for 15min, and collect the supernatant solution to obtain rose flavonoid pigment treatment solution. Concentrate the treatment solution in vacuum to 60% of the volume of the original solution at a temperature of 80°C, add ethanol to the concentrated solution while it is hot, so that the concentration of ethanol in the concentrated solution is 85%, mix well, and control the pH of the system to be pH= 3. Keep it in the dark for 24 hours, filter it with suction, concentrate it in vacuum, and dry it to get the coarse powder of rose flavonoid pigment.

[0048] Soak the FL-2 macroporous adsorption resin with 15% ethanol for 12 hours, and then wash it with 15% ethanol until the ethanol eluent mixed with water does not become white turbid. Take the wash...

Embodiment 2

[0051] Extract flavonoids from rose residue: add 250-350kg of water to 300kg fresh flowers, steam to extract rose essential oil, press filter the flower residue after extracting rose essential oil, centrifuge the filtrate at 3000r / min for 15min, and collect the supernatant solution to obtain rose flavonoid pigment treatment solution. Concentrate the treatment solution in vacuum at a temperature of 60°C to 40% of the volume of the original solution, add ethanol to the concentrated solution while it is hot, so that the concentration of ethanol in the concentrated solution is 75%, mix well, and control the pH of the system to be pH= 4. Keep it in the dark for 24 hours, filter it with suction, concentrate it in vacuum, and dry it to get the coarse powder of rose flavonoid pigment.

[0052] Soak the FL-2 macroporous adsorption resin in 20% ethanol for 12 hours, and then wash it with 20% ethanol until the ethanol eluent mixed with water does not become white turbid. Take the washed...

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PUM

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Abstract

The invention relates to a method for extracting rose flavone from a rose residue solution. The method comprises the following steps: (1), filtering the rose residue solution, concentrating, adding ethyl alcohol to adjust the pH value of the solution, refrigerating and standing in the absence of light; (2), performing suction filtration on the solution in the step (1), and concentrating, so as to obtain rose flavone pigment coarse powder; (3), performing separation and purification on the rose flavone pigment coarse powder obtained in the step (2), so as to obtain eluant; (4), concentrating and drying the eluant, so as to obtain dry flavone. According to the invention, the flavone extraction ratio reaches above 8% to the maximum extent, and is greatly improved compared with the flavone extraction ratio being not higher than 5% in the prior art; the obtained flavone is bright red in color, and can be widely applied to the fields of medicine and food.

Description

technical field [0001] The invention discloses a method for extracting flavonoids, in particular to a method for extracting rose flavonoids from rose residue liquid. Background technique [0002] Roses are attractive in color and rich in aroma. They are edible flowers. They can be used as rose tea, rose sauce and other high-grade foods, and rose essential oil can be extracted from roses. The colored residues of essential oils are rich in pigments, and the flavonoids contained in the pigments have certain health care functions, such as eliminating fatigue, improving physical fitness, and beautifying the skin. They are a type of natural pigments worth developing. Extracting rose pigment from the rose residue that has extracted essential oil can not only solve the problem of waste residue treatment in rose essential oil factories, but also obtain safe and healthy natural food coloring, which has good economic and social value. [0003] In the prior art, the method for extracti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D311/30C07D311/40C09B61/00
CPCC07D311/30C07D311/40C09B61/00
Inventor 王佳勇姚奕颜勇牟波孟庆军
Owner 银谷芳香科技有限公司
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