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Method for extracting flavonoids from gingko tea

A technology of ginkgo biloba tea and flavonoids is applied in the functions of food ingredients, food ultrasonic treatment, food treatment and other directions, which can solve the problems of effect-dependent, low cost, low extract yield, etc., to achieve cost control, improve extraction rate, Effects that do not require high adsorption performance

Inactive Publication Date: 2018-02-02
宜昌东方昌绿茶业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a method for extracting flavonoids from ginkgo tea, which solves the problems in the prior art that the output of the extract is not high, the effect depends on the resin, and the cost is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for extracting flavonoids from ginkgo tea, comprising the following steps:

[0025] a. Put the ginkgo tea into the drying equipment, and dry it at 80°C for 5 minutes in a carbon dioxide environment;

[0026] B, the dried ginkgo tea is put into pulverizing equipment and pulverized to obtain 80 object ginkgo tea powder, the ginkgo tea powder is divided into group A and group B, and the mass ratio of group A to group B is 2:1;

[0027] c. Put the ginkgo tea powder of group A into pure water to form ginkgo tea liquid, add cellulase to the ginkgo tea liquid to carry out enzymolysis for 1.5h, and obtain the enzymolysis liquid;

[0028] d. Adding ethanol to the enzymatic hydrolysis solution and performing ultrasonic extraction to obtain a crude extract;

[0029] e, the crude extract is equally divided into two parts, liquid A and liquid B;

[0030] f, adding the macroporous resin with the same weight as liquid A to filter, and using ethanol with a volume concentrati...

Embodiment 2

[0038] A method for extracting flavonoids from ginkgo tea, comprising the following steps:

[0039] a. Put the ginkgo tea into the drying equipment, and dry it at 95°C for 10 minutes in a carbon dioxide environment;

[0040] B, the dried ginkgo tea is put into crushing equipment and pulverized to obtain 100 mesh ginkgo tea powder, the ginkgo tea powder is divided into group A and group B, and the mass ratio of group A to group B is 2:1;

[0041] c. Put the ginkgo tea powder of group A into pure water to form ginkgo tea liquid, add cellulase to the ginkgo tea liquid to carry out enzymolysis for 3.5 hours, and obtain the enzymolysis liquid;

[0042] d. Adding ethanol to the enzymatic hydrolysis solution and performing ultrasonic extraction to obtain a crude extract;

[0043] e, the crude extract is equally divided into two parts, liquid A and liquid B;

[0044] f, adding the macroporous resin with the same weight as liquid A to filter, and using ethanol with a volume concentra...

Embodiment 3

[0052] A method for extracting flavonoids from ginkgo tea, comprising the following steps:

[0053] a. Put the ginkgo tea into the drying equipment, and dry it at 88°C for 8 minutes in a carbon dioxide environment;

[0054] B, the dried ginkgo tea is put into the crushing equipment and pulverized to obtain 90 mesh ginkgo tea powder, the ginkgo tea powder is divided into group A and group B, and the mass ratio of group A to group B is 2:1;

[0055]c. Put the ginkgo tea powder of group A into pure water to form ginkgo tea liquid, add cellulase to the ginkgo tea liquid to carry out enzymolysis for 2.5 hours, and obtain the enzymolysis liquid;

[0056] d. Adding ethanol to the enzymatic hydrolysis solution and performing ultrasonic extraction to obtain a crude extract;

[0057] e, the crude extract is equally divided into two parts, liquid A and liquid B;

[0058] f, adding the macroporous resin with the same weight as liquid A to filter, and using ethanol with a volume concentr...

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PUM

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Abstract

The invention provides a method for extracting flavonoids from gingko tea. The method comprises the following steps: a, placing ginkgo tea into a drying device; b, dividing ginkgo tea powder into A group and B group; c, subjecting the ginkgo tea powder of the group A to enzymolysis; d, subjecting enzymatic hydrolysate to ultrasonic extraction; e, dividing crude extract into a liquid 1 and a liquid2; f, adding macroporous resins into the liquid 1; g, adding polyamide adsorbent resins into the liquid 2; and h, subjecting B group ginkgo tea powder to supercritical extraction with carbon dioxide.The comprehensive utilization of the enzymolysis, the ultrasonic extraction, physical adsorption, chemical adsorption, and supercritical extraction with carbon dioxide not only increases the contentof extracted flavonoids, but also has less requirements on the adsorption performance of the applied macroporous adsorbent resins, reduces operation conditions, and indirectly reduces costs. Besides,the throughput of the supercritical extraction with carbon dioxide is low, so the costs are also under control.

Description

technical field [0001] The invention relates to an extraction method, in particular to a method for extracting flavonoids from ginkgo tea. Background technique [0002] Ginkgo is a deciduous tree of the Ginkgo family Ginkgo family. Ginkgo leaves contain a variety of physiologically active ingredients, among which flavonoids are important physiologically active substances, which have the functions of protecting the liver, preventing and treating cardiovascular diseases, anti-oxidation, and anti-aging. Ginkgo tea is produced using advanced technology from the leaves of the ginkgo tree. It is rich in protein, amino acids, minerals and vitamins and other nutrients. [0003] Flavonoids are a kind of flavonoids, which are natural glycosides, composed of a variety of sugars, including monosaccharides, disaccharides, trisaccharides and acylated sugars, and its nature is in the form of powder crystals. Flavonoids have the functions of softening blood vessels, restoring the elasticit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L33/105
CPCA23L33/105A23V2002/00A23V2200/30A23V2250/2116A23V2300/48A23V2300/44
Inventor 唐新务
Owner 宜昌东方昌绿茶业有限公司