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A kind of method for extracting flavonoids from locust bark

A technology of flavonoids and Robinia pseudoacacia, which is applied in the field of extraction of flavonoids, can solve the problems of large dosage, achieve the effects of large planting, pollution reduction, and improvement of specific immunity and non-specific immunity

Inactive Publication Date: 2011-12-14
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the flavonoids used are all artificially synthesized, which have certain side effects, but are used in large amounts, and cannot meet the increasing demand of human beings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Step 1, collecting black locust bark with a tree age greater than two years, drying, pulverizing, and using a 60-mesh sieve to make black locust tree powder;

[0020] Step 2: Take 1 part of Robinia pseudoacacia bark powder in parts by weight, put 40 parts of ethanol into container I, the concentration of ethanol is 50%%, filter after reacting for 2 hours under the condition of 70 ℃, filtrate Ⅰ and filter residue Ⅰ spare;

[0021] Step 3, add ethanol in an amount 6 times the weight of the filter residue I to the filter residue I, the concentration of ethanol is 40%, react at 70° C. for 2 hours and then filter, and the filtrate II and the filter residue II are set aside;

[0022] Step 4: Put the filter residue II in a blender, stir for 10 minutes at 200 rpm, then put the filter residue II into the container, add water 8 times the weight of the filter residue III, boil for 1 hour and filter, the filtrate III spare;

[0023] Step 5. Put the filtrate I, filtrate II, and fi...

Embodiment 2

[0026] Step 1, collecting black locust bark with a tree age greater than two years, drying, pulverizing, and using a 60-mesh sieve to make black locust tree powder;

[0027] Step 2: Take 1 part of Robinia pseudoacacia bark powder in parts by weight, put 42 parts of ethanol into container I, the concentration of ethanol is 52%, filter after reacting for 2 hours under the condition of 72 ° C, and filtrate I and filter residue I are set aside;

[0028] Step 3, add ethanol in an amount 6 times the weight of filter residue I to filter residue I, the concentration of ethanol is 42%, react at 72°C for 2 hours and then filter, and filtrate II and filter residue II are set aside;

[0029] Step 4: Put the filter residue II into a blender, stir for 11 minutes at 200 rpm, then put the filter residue II into the container, add water 8 times the weight of the filter residue III, boil for 1 hour and filter, the filtrate III spare;

[0030] Step 5. Put the filtrate I, filtrate II, and filtr...

Embodiment 3

[0033] Step 1, collecting black locust bark with a tree age greater than two years, drying, pulverizing, and using a 60-mesh sieve to make black locust tree powder;

[0034] Step 2: Take 1 part of Robinia pseudoacacia bark powder in parts by weight, put 44 parts of ethanol into container I, the concentration of ethanol is 54%, filter after reacting for 3 hours under the condition of 74 DEG C, filtrate I and filter residue I are set aside;

[0035] Step 3, adding ethanol in an amount 7 times the weight of the filter residue I to the filter residue I, the concentration of ethanol is 44%, reacting at 74°C for 2 hours and then filtering, the filtrate II and the filter residue II are set aside;

[0036] Step 4: Put the filter residue II into a blender, stir for 13 minutes at 200 rpm, then put the filter residue II into the container, add water 8 times the weight of the filter residue III, boil for 1 hour and filter, the filtrate III spare;

[0037] Step 5. Put the filtrate I, fil...

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PUM

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Abstract

The invention relates to a method for extracting a flavonoid compound from kuteera bark. The finished product is prepared by collecting kuteera bark, drying, crushing, purifying by using ethanol and concentrating. In the produced product, only water and ethanol are adopted, so environmental pollution is reduced; the used branch belongs to regenerated substances and can be recycled, production cost is low, the extracted flavonoid compound has high purity, purity is achieved, the method is simple and convenient, materials are obtained cheaply; and the extracted pure nature compound does not comprise artificially synthetic substances, so damage to human bodies and animals is reduced.

Description

[0001] technical field [0002] The invention relates to a method for extracting flavonoids, in particular to a method for extracting flavonoids from black locust bark. Background technique [0003] Flavonoids are a large class of compounds that widely exist in nature, ranking first in the number of natural phenolic compounds, and most of them have color; most of the flavonoids in plants are combined with sugars to form glycosides or carbon sugar groups. , flavonoids mostly exist in higher plants and ferns, few flavonoids are contained in liverworts, but no flavonoids are found in algae, microorganisms, and bacteria. Flavonoids widely exist in all parts of subplants, including roots, stems, heartwood, bark, leaves, flowers, and fruits. In plant leaves, most flavonoids generally exist in the form of glycosides. Studies have shown that flavonoids can increase the growth rate and feed conversion rate of animals, improve the body's specific immunity and non-specific immunit...

Claims

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Application Information

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IPC IPC(8): A23K1/14A23K1/16A23K10/30A23K40/10
Inventor 王占彬李元晓王玉琴朱世康代义强
Owner HENAN UNIV OF SCI & TECH
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