CN109867703A - A kind of extracting method and its extract of Coriaria sinica skin tannin - Google Patents
A kind of extracting method and its extract of Coriaria sinica skin tannin Download PDFInfo
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- CN109867703A CN109867703A CN201910184456.0A CN201910184456A CN109867703A CN 109867703 A CN109867703 A CN 109867703A CN 201910184456 A CN201910184456 A CN 201910184456A CN 109867703 A CN109867703 A CN 109867703A
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Abstract
The invention discloses the methods that tannin is extracted from Coriaria sinica skin, comprising the following steps: (1) the Coriaria sinica skin crushed after being dried of acquisition is sieved and Coriaria sinica skin coarse powder is made；(2) aqueous slkali being added in the Coriaria sinica skin coarse powder in step (1), Coriaria sinica skin lye is made；(3) the Coriaria sinica skin lye in step (2) is extracted at high temperature；(4) extracting solution in step (3) is filtered, acid solution is added and is acidified, up to Coriaria sinica skin tannin after concentrated drying.By this method, the tannin in Coriaria sinica skin can be effectively extracted, cost is relatively low for the extracting method, and the recovery rate of Coriaria sinica skin tannin is higher, has great importance to the industrialized production of Coriaria sinica tannin.
Description
Technical field
The present invention relates to the extracting methods and its extract of a kind of Coriaria sinica skin tannin.
Background technique
Coriaria sinica (Coriaria nepalensis Wall.) also known as water Coriaria sinica, black Dracaena, wild horse mulberry (Yunnan), Coriaria sinica bavin
(Guizhou), thousand Nian Hong, noisy fish (Sichuan) are Coriariaceae Coriaria machaka.Often it is born in 400-3200 meters of height above sea level of shrubbery
In, the ground such as Shaanxi, Gansu, Tibet, Hubei, Yunnan, Sichuan, the Guizhou of China are distributed in, are also had in the country such as India, Nepal
Report.The root and leaf of Coriaria sinica are often made medicinal, have the effect of dehumidifying, wind dispelling, analgesia and desinsection, wherein the lactone constituents pair being rich in
It is schizoid significant in efficacy, it is widely used in clinic.Coriaria sinica seed can extract oil, and liquefaction ink, paint etc., cauline leaf can mention
Tannin extract is taken, complete stool can make soil pesticide.
Tannin is molecular weight in the polyphenols of 500-3000, is present in the positions such as stem, leaf, flower, the fruit of plant more.
Phenolic hydroxyl structure rich in tannin molecule, impart its multiplicity active function, be widely used at present food,
The industries such as drug, health care product, cosmetics, petrochemical industry, dyestuff, leather production.Due to the limited of tannin natural resources and extract
Difficulty, cause tannin application be restricted.The Coriaria sinica shrub plant widely distributed as China, is documented in its skin
Rich in tannin, extracting tannin from Coriaria sinica skin has very big potentiality to be exploited.The present invention provides Coriaria sinica skins
The alkali extracting method of middle tannin, cost is relatively low for this method, extraction efficiency is higher, is the development and utilization of tannin in Coriaria sinica skin
Provide reference.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides the extracting methods and its extract of a kind of Coriaria sinica skin tannin.It should
Method extracts Coriaria sinica skin tannin using lye as Extraction solvent, and acid condition that tannin has is utilized can be with alkali
Liquid reacts and increases water solubility, then the extracting method being acidified with acid solution to alkali extracting solution, and the extracting method is relative to organic
Solvent extraction is at low cost, extraction efficiency is high.
In order to solve the above technical problems, present invention provide the technical scheme that
A kind of extracting method and its extract of Coriaria sinica skin tannin, comprising the following steps:
(1) the Coriaria sinica skin crushed after being dried of acquisition is sieved and Coriaria sinica skin coarse powder is made；
(2) aqueous slkali being added in the Coriaria sinica skin coarse powder in step (1), Coriaria sinica skin lye is made；
(3) the Coriaria sinica skin lye in step (2) is extracted at high temperature；
(4) extracting solution in step (3) is filtered, acid solution is added and is acidified, up to Coriaria sinica skin list after concentrated drying
Rather.
Preferably, the aqueous slkali is one of sodium bicarbonate, sodium carbonate, sodium hydroxide, calcium hydroxide or a variety of
Aqueous solution.
Preferably, the alkaline concentration is 0.1-0.3%.The research of the invention finds that alkali concentration is to Coriaria sinica skin tannin
Recovery rate be affected, alkali concentration is preferable in 0.1-0.3%, when below or above this range under recovery rate all meetings of tannin
Drop, therefore the preferred 0.1-0.3% of alkali concentration in step (2).
In addition to alkali concentration, extraction time, solid-liquid ratio, Extracting temperature, extraction time also have the recovery rate of Coriaria sinica skin tannin
It is apparent to influence；It is compared according to associated extraction experiment condition, it is as follows that the present invention intends alternative condition:
Preferably, the dosage of the aqueous slkali is 10-20 times of Coriaria sinica skin coarse powder weight.
Preferably, the Extracting temperature in step (3) is 70-90 DEG C.
Preferably, the extraction time in step (3) is 40-80min, and extraction time is 1-2 times.
Preferably, acid solution described in step (4) is one of hydrochloric acid, sulfuric acid, formic acid, acetic acid or a variety of aqueous solutions.
Preferably, acid solution acidification is added in step (4) and adjusts pH to 5-7.
Preferably, the acid strength is 10-20%.
A kind of Coriaria sinica skin tannins extract, take claim 1-9 any one described in method be made.
Compared with the relevant technologies, the present invention has the following technical effect that using Coriaria sinica skin as raw material, Coriaria sinica skin is done by the present invention
Pulverize and sieve after dry and be conducive to being sufficiently mixed for Extraction solvent, extracted using lye as solvent, lye can in tannin
Phenolic hydroxyl structure react and at salt increase water solubility, then be acidified with acid solution, in the Coriaria sinica bark extract after concentrate drying
The content of tannin is up to 50% or more, and Coriaria sinica skin tannin recovery rate is up to 15% or more.The extracting method is relative to organic solvent
Extraction cost is low and extraction efficiency is high.
Detailed description of the invention
Fig. 1 is influence of the different alkali concentrations to Coriaria sinica skin tannin recovery rate；
Fig. 2 is influence of the different Extracting temperatures to Coriaria sinica skin tannin recovery rate；
Fig. 3 is influence of the different extraction times to Coriaria sinica skin tannin recovery rate；
Fig. 4 is the influence that different feed liquid compares Coriaria sinica skin tannin recovery rate；
Fig. 5 is influence of the different extraction times to Coriaria sinica skin tannin recovery rate.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that institute
The embodiment of description is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts, belongs to this hair
The range of bright protection.
This application provides the extracting methods and its extract of a kind of Coriaria sinica skin tannin, comprising the following steps:
(1) the Coriaria sinica skin crushed after being dried of acquisition is sieved and Coriaria sinica skin coarse powder is made；
(2) aqueous slkali being added in the Coriaria sinica skin coarse powder in step (1), Coriaria sinica skin lye is made；
(3) the Coriaria sinica skin lye in step (2) is extracted at high temperature；
(4) extracting solution in step (3) is filtered, acid solution is added and is acidified, up to Coriaria sinica skin list after concentrated drying
Rather.
Embodiment 1
As shown in Figure 1, the research of the invention finds that, alkali concentration is affected to the recovery rate of Coriaria sinica skin tannin, alkali concentration
Preferable in 0.1-0.3%, the recovery rate of tannin can all decline when below or above this range, therefore alkali concentration is excellent in step (2)
Select 0.1-0.3%.
Embodiment 2
As shown in Figure 2-5, in addition to alkali concentration, extraction time, solid-liquid ratio, Extracting temperature, extraction time are to Coriaria sinica skin tannin
Recovery rate also have apparent influence；According to fig. 2-extraction experiment condition shown in fig. 5 comparison, the condition that the present invention selects is such as
Under:
The dosage of the aqueous slkali is 10-20 times of Coriaria sinica skin coarse powder weight.
Extracting temperature in the step (3) is 70-90 DEG C.
Extraction time in the step (3) is 40-80min, and extraction time is 1-2 times.
Acid solution described in the step (4) is one of hydrochloric acid, sulfuric acid, formic acid, acetic acid or a variety of aqueous solutions.
Preferably, acid solution acidification is added in step (4) and adjusts pH to 5-7.
Preferably, the acid strength is 10-20%.
Embodiment 3
A kind of extracting method and its extract of Coriaria sinica skin tannin, comprising the following steps:
(1) the Coriaria sinica skin crushed after being dried of acquisition is sieved and Coriaria sinica skin coarse powder is made；
(2) ratio for the sodium hydrate aqueous solution for being 0.1% according to the concentration of every gram of Coriaria sinica skin coarse powder addition 10mL mixes
Coriaria sinica skin coarse powder aqueous slkali is made；
(3) Coriaria sinica skin lye is extracted at 70 DEG C 40min, extracted 1 time, filtered and merging filtrate obtains Coriaria sinica skin alkali carries and takes
Liquid；
(4) Coriaria sinica skin alkali extracting solution is subjected to acidification with 10% aqueous sulfuric acid and adjusts pH to 5；By the Coriaria sinica after acidification
Skin tannin extracting solution is concentrated, up to Coriaria sinica skin tanning extract after drying.
Embodiment 4
A kind of extracting method and its extract of Coriaria sinica skin tannin, comprising the following steps:
(1) Coriaria sinica skin is pulverized and sieved after natural drying, obtains Coriaria sinica skin coarse powder, room temperature preservation is spare；
(2) aqueous sodium carbonate for being 0.2% with the concentration of every gram of Coriaria sinica skin coarse powder addition 15mL, is extracted at 80 DEG C
60min is extracted 2 times, filters and merging filtrate obtains Coriaria sinica skin alkali extracting solution；
(3) Coriaria sinica skin alkali extracting solution is subjected to acidification with 20% acetic acid aqueous solution and adjusts pH to 6；
(4) the Coriaria sinica skin tannin extracting solution after acidification is concentrated, up to Coriaria sinica skin tanning extract after drying.
Embodiment 5
A kind of extracting method and its extract of Coriaria sinica skin tannin, comprising the following steps:
(1) Coriaria sinica skin is pulverized and sieved after natural drying, obtains Coriaria sinica skin coarse powder, room temperature preservation is spare；
(2) sodium bicarbonate aqueous solution for being 0.3% with the concentration of every gram of Coriaria sinica skin coarse powder addition 20mL, is extracted at 90 DEG C
80min is extracted 1 time, filters and merging filtrate obtains Coriaria sinica skin alkali extracting solution；
(3) Coriaria sinica skin alkali extracting solution is subjected to acidification with 15% aqueous hydrochloric acid solution and adjusts pH to 7；
(4) the Coriaria sinica skin tannin extracting solution after acidification is concentrated, up to Coriaria sinica skin tanning extract after drying.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of extracting method and its extract of Coriaria sinica skin tannin, which comprises the following steps:
(1) the Coriaria sinica skin crushed after being dried of acquisition is sieved and Coriaria sinica skin coarse powder is made；
(2) aqueous slkali being added in the Coriaria sinica skin coarse powder in step (1), Coriaria sinica skin lye is made；
(3) the Coriaria sinica skin lye in step (2) is extracted at high temperature；
(4) extracting solution in step (3) is filtered, acid solution is added and is acidified, up to Coriaria sinica skin tannin after concentrated drying.
2. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1, it is characterised in that: described
Aqueous slkali is one of sodium bicarbonate, sodium carbonate, sodium hydroxide, calcium hydroxide or a variety of aqueous solutions.
3. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1 or 2, it is characterised in that: institute
The alkaline concentration stated is 0.1-0.3%.
4. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1, it is characterised in that: described
The dosage of aqueous slkali is 10-20 times of Coriaria sinica skin coarse powder weight.
5. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1, it is characterised in that: step
(3) Extracting temperature in is 70-90 DEG C.
6. a kind of extracting method and its extract of Coriaria sinica skin tannin according to claim 1 or 5, it is characterised in that: step
Suddenly the extraction time in (3) is 40-80min, and extraction time is 1-2 times.
7. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1, it is characterised in that: step
(4) acid solution described in is one of hydrochloric acid, sulfuric acid, formic acid, acetic acid or a variety of aqueous solutions.
8. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1 or claim 7, it is characterised in that: step
Suddenly acid solution acidification is added in (4) and adjusts pH to 5-7.
9. the extracting method and its extract of a kind of Coriaria sinica skin tannin according to claim 1 or claim 7, it is characterised in that: institute
Stating acid strength is 10-20%.
10. a kind of Coriaria sinica skin tannins extract, which is characterized in that method system described in taking claim 1-9 any one
?.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613383A (en) * | 2009-08-03 | 2009-12-30 | 五峰赤诚生物科技有限公司 | A kind of method of from persimmon, producing persimmon tannin |
| CN102321125A (en) * | 2011-10-14 | 2012-01-18 | 赛普特环保技术(厦门)有限公司 | Process for extracting gallotannic acid from galla chinensis |
-
2019
- 2019-03-12 CN CN201910184456.0A patent/CN109867703A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101613383A (en) * | 2009-08-03 | 2009-12-30 | 五峰赤诚生物科技有限公司 | A kind of method of from persimmon, producing persimmon tannin |
| CN102321125A (en) * | 2011-10-14 | 2012-01-18 | 赛普特环保技术(厦门)有限公司 | Process for extracting gallotannic acid from galla chinensis |
Non-Patent Citations (2)
| Title |
|---|
| 尉芹 等: "亟待开发的马桑资源", 《陕西林业科技》 * |
| 李玲: "马桑化学成分研究及马桑中黄酮的生物活性研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
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Application publication date: 20190611 |