CN103468409A - Method for extracting Xinyang maojian tea extractum by utilizing subcritical technology - Google Patents
Method for extracting Xinyang maojian tea extractum by utilizing subcritical technology Download PDFInfo
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Abstract
The invention discloses a method for extracting Xinyang maojian tea extractum by utilizing a subcritical technology, and belongs to the field of biological extraction methods. The method comprises the following steps: crushing a Xinyang maojian tea sample by using a traditional Chinese medicine crusher; packaging by using a filter paper, and then placing into a sample bag of 200 meshes; placing into an extracting pot, and then injecting a certain amount of subcritical fluid organic solvents into the extracting pot; carrying out timing and metering extraction under certain extraction conditions; after the extraction is finished, pumping a liquid solvent into an evaporating pot; respectively carrying out solvent removal treatment on the Xinyang maojian tea sample and the liquid solvent to separate the liquid solvent and an extract so as to obtain the Xinyang maojian tea extractum. The method disclosed by the invention has the advantages of industrialized large-scale production, energy conservation, low operating cost, easiness for separation with a product, very wide application prospect, and the like.
Description
Technical field
The present invention relates to subcritical biological abstraction technique, be specifically related to a kind of method of utilizing subcritical technology extraction Maojian tea medicinal extract, belong to biological extracting process field.
Background technology
Xinyang Maojian Tea is one of China's well-known tea, is one of famous special product in Henan Province, originates in 8 counties of Xinyang City, Henan Province, district, its excellent quality, and profile bar rope is thin, circle, tight, straight, and color and luster is emerald green, and pekoe appears; Endoplasm soup look dark green is bright, and fragrance is high bright, and dense, tasty and refreshing, the anti-bubble of flavour aquatic foods is light green neat and well spaced at the bottom of leaf.Having promotes the production of body fluid quench one's thirst, clear away heart-fire improving eyesight, produce refreshing effect to the mind, go the greasy several functions such as help digestion, long-term drinking is very useful to person health.
Up to now, the researchist of association area has recorded more fragrance matter from Maojian tea, and tealeaves medicinal extract is existing well application in tobacco, food, beverage and health products trade.Adopt different analytical procedures, the detected fragrance matter of the Xinyangmaojian tea of different year is not quite similar, wherein main component has Pentyl alcohol, Geraniol, cis-jasmone, β-ionone, Palmitic acid, Palmitic acid methyl esters, Palmitic acid ethyl ester, 11,14,17-triolefin-20 methyl carbonate and 2,6-tertiary butyl-p-cresol etc.These fragrance matters have formed the flavor characteristic of Xinyang Maojian Tea uniqueness jointly, and this distinctive odor, after by respiratory tract, immersing human body, can perform to special medical treatment and health-care effect.
In addition, also be rich in the compositions such as trimethyl-xanthine, tannin, tea-polyphenol, protein, total free aminoacids, chlorophyll, carotene, aromatic oil, enzyme, vitamin A, vitamins B, vitamins C, vitamin-E, vitamin P and inorganic salt, trace element in Xinyang Maojian Tea, also very useful to HUMAN HEALTH.
The method that obtains at present tealeaves medicinal extract mainly contains water extraction, alcohol extracting method and Petroleum ether extraction method (number of patent application 201210019887.X, 200810058741.X, 200810058763.6).The ubiquitous shortcoming of these methods is that the needed time of extraction is long, temperature is high, and extraction yield is low, and this has limited the suitability for industrialized production of tealeaves medicinal extract and the raising of quality product to a great extent.
Summary of the invention
A technical problem to be solved by this invention is to provide a kind of method of utilizing subcritical technology extraction Maojian tea medicinal extract, and this method has simply, efficient, environmental protection, do not destroy thermo-sensitivity flavour ingredient, low cost and other advantages, applicable scale operation.
The method steps of technical solution of the present invention is as follows:
1) the high-quality green tea sample is pulverized with medicinal herb grinder, pack in sample sack, be positioned in special extractor, charge amount is not more than 80% of extractor volume, vacuumize in backward extractor and inject a certain amount of subcritical fluids as extraction solvent, by the complete submergence of high-quality green tea sample, the mass ratio of Tea Samples and solvent is 1:1～10.Extraction conditions is 1～40 minute time, number of times 1～4 time, and temperature is 0 ℃～50 ℃, the saturation vapour pressure that pressure is solvent for use under corresponding extraction temperature; 2) after extraction finishes, liquid solvent is drawn into to evaporating pot, sample and liquid solvent are carried out respectively to the desolvation processing, in the process of precipitation, temperature in extractor remains on 0～50 ℃, from the extractor bottom is extracted liquid solvent out, extracts the solvent of gasification out from the top of extractor, after solvent in the high-quality green tea sample removes fully, by sample whole taking-up from extractor.The liquid solvent that contains the high-quality green tea extract of extracting out from the extractor bottom, through evaporation gasification separation solvent, obtain high-quality green tea medicinal extract; 3) solvent gas evaporated from sample and liquid solvent, compress and liquefy through membrane compressor, and liquid solvent streams back dissolving developing agent storage tank, recycle.
The mass ratio of described Tea Samples and solvent is 1:1～10.
Described extraction conditions: pressure is 0.1～0.9MPa, and temperature is 0～50 ℃, and the time is 1～40min, and number of times is 1～4 time.
Described extraction solvent is the subcritical fluids organic solvent.
Described subcritical fluids organic solvent is one or more the mixing in propane, butane, Tetrafluoroethane, dme.
Solvent reusable edible after described precipitation.
Tea Samples after processing, can reprocess products such as obtaining tea-polyphenol.
Technique effect of the present invention is as follows:
(1) take full advantage of the advantage of subcritical abstraction technology, greatly shortened extraction time, improved the yield of extraction efficiency and finished product medicinal extract;
(2) operating pressure is low, devoid of risk, and extraction temperature is lower, can not destroy the natural radioactivity of heat-sensitive substance, has improved nutritive value and the quality of Maojian tea medicinal extract;
(3) equipment investment is low, and technique is simple, is applicable to scale operation;
(4) product no solvent residue, green health, and solvent reusable edible, can be to environment.
The accompanying drawing explanation
Fig. 1 extracts schema
Embodiment
Subcritical abstraction technology is to utilize subcritical fluids as extraction agent, in the pressurized vessel of airtight, anaerobic, low pressure, according to the similar principle mixed of organism, by extraction material and the molecular diffusion process of extraction agent in immersion process, the fat-soluble component reached in solid materials is transferred in liquid extraction agent, the process of passing through reduction vaporization again, by extraction agent and purpose product separation, finally obtains a kind of novel extraction and the isolation technique of purpose product.Subcritical abstraction technology is compared other separation method many advantages: nontoxic, harmless, environmental protection, pollution-free, non-hot-work, do not destroy Product Activity, anti-oxidation, but the large large-scale industrialization production of production capacity, energy-conservation, running cost is low, be easy to and product separation etc., there is very wide application prospect.
Below in conjunction with embodiment, the present invention is further described, but following examples are not limitation of the invention.
Embodiment 1
Take finished product Maojian tea sample 375g, through medicinal herb grinder, pulverize, with filter paper, wrap up in the 200 order sample sacks of packing into, be placed in airtight extractor, after closing feeding-passage, be evacuated to vacuum, inject propane solvent by material is molten than 1:3, the submergence sample, extract 4 times under the condition that is 20 ℃ (relevant pressure 0.85MPa) in temperature fully, each 30min; After having extracted, extract the liquid solvent in extractor out, open the air outlet valve of extractor, make solvent gasification and the feed separation of adsorbing in material, discharge extractor; The extraction liquid of extraction gained, enter vapo(u)rization system, and the solvent gasification is separated with extraction liquid, obtains tealeaves medicinal extract.The solvent gas evaporated from Tea Samples and extraction liquid, compress and liquefy through membrane compressor, and liquid solvent streams back dissolving agent circulation tank, recycle.Collection obtains medicinal extract 4.63g, yield 1.23%.
Embodiment 2
Take finished product Maojian tea sample 500g, through medicinal herb grinder, pulverize, with the filter paper parcel, pack in 200 order sample sacks, be placed in airtight extractor, after closing feeding-passage, be evacuated to vacuum, inject the butane solvent by material is molten than 1:4, fully the submergence sample, at the lower extraction of 35 ℃ of temperature (relevant pressure 0.35MPa) 3 times, each 20min.After extraction finishes, according to the method desolvation in embodiment 1, take out sample, collect and obtain medicinal extract 11.06g, yield 2.21%.
Embodiment 3
Take the wet tea sample 500g of Xinyang Maojian Tea, through medicinal herb grinder, pulverize, with the filter paper parcel, pack in 200 order sample sacks, be placed in airtight extractor, after closing feeding-passage, be evacuated to vacuum, inject the dme solvent by material is molten than 1:3, fully the submergence sample, at the lower extraction of 30 ℃ of temperature (relevant pressure 0.5MPa) 3 times, each 20min.After extraction finishes, according to the method desolvation in embodiment 1, take out sample, collect and obtain medicinal extract 48.89g, yield 9.78%.
Embodiment 4
Take finished product Maojian tea sample 1000g, through medicinal herb grinder, pulverize, with the filter paper parcel, pack in 200 order sample sacks, be placed in airtight extractor, after closing feeding-passage, be evacuated to vacuum, inject the Tetrafluoroethane solvent by material is molten than 1:5, fully the submergence sample, at the lower extraction of 35 ℃ of temperature (relevant pressure 0.89MPa) 4 times, each 30min.After extraction finishes, according to the method desolvation in embodiment 1, take out sample, collect and obtain medicinal extract 56.68g, yield 5.67%.
Embodiment 5
Take the wet tea sample 500g of Xinyang Maojian Tea, through medicinal herb grinder, pulverize, with the filter paper parcel, pack in 200 order sample sacks, be placed in airtight extractor, after closing feeding-passage, be evacuated to vacuum, by molten butane and the dme mixed solvent that injects 1:1 than 1:3 of material, submergence sample fully, at 30 ℃ of temperature, extraction is 3 times, each 20min.After extraction finishes, according to the method desolvation in embodiment 1, take out sample, collect and obtain medicinal extract 38.2g, yield 7.64%.
Although the present invention with preferred embodiment openly as above, it is not in order to limit the present invention, and the present invention is equally applicable to other teas.Any person skilled in the art, without departing from the spirit and scope of the present invention, can do various changes and modification, so protection scope of the present invention should be with being as the criterion that claims were defined.
Claims (7)
1. a method of utilizing subcritical technology extraction Maojian tea medicinal extract, its feature comprises the steps:
1) a certain amount of Maojian tea sample is pulverized with medicinal herb grinder, with in the 200 order sample sacks of packing into after the filter paper parcel, insert extractor, vacuumize, then inject a certain amount of subcritical fluids organic solvent as extraction solvent in extractor, carry out timing, metering extraction under certain extraction conditions;
2) after extraction finishes, open compressor and carry out precipitation, solvent is separated with extract, obtain Maojian tea medicinal extract.
2. method according to claim 1, the mass ratio that it is characterized in that described Tea Samples and solvent is 1:1～10.
3. method according to claim 1, it is characterized in that described extraction conditions: pressure is 0.1～0.9MPa, and temperature is 0～50 ℃, and extraction time is 1～40min, and extraction times is 1～4 time.
4. method according to claim 1, is characterized in that described subcritical fluids organic solvent is one or more the mixing in propane, butane, Tetrafluoroethane, dme.
5. method according to claim 1, is characterized in that in described solvent and extract sepn process using vacuum pump to assist and carry out.
6. method according to claim 1, is characterized in that the solvent reusable edible after described precipitation.
7. the tea leaf residual sample of method after processing according to claim 1, can reprocess the products such as acquisition tea-polyphenol.
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| CN103789996A (en) * | 2014-01-07 | 2014-05-14 | 郑州大学 | Method for removing scale of wool by subcritical dry cleaning technology |
| CN104096381A (en) * | 2014-07-09 | 2014-10-15 | 郑州大学 | Method for extracting effective components of natural products through mixing of ethyl alcohol and sub-critical fluid |
| CN104738251A (en) * | 2013-12-27 | 2015-07-01 | 中粮营养健康研究院有限公司 | Method for subcritical fluid extraction of tea extract |
| CN104845732A (en) * | 2015-05-06 | 2015-08-19 | 福建荣安天然植物开发有限公司 | Method for efficiently extracting ganoderma lucidum spores oil by using subcritical mixed solvent |
| CN106118885A (en) * | 2016-07-22 | 2016-11-16 | 福建中烟工业有限责任公司 | Fine manipulation of tea leaves product extract, its preparation method and the application in Nicotiana tabacum L. thereof |
| CN113528185A (en) * | 2021-07-30 | 2021-10-22 | 南京工业大学 | Method for extracting paraffin from wax residue |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104738251A (en) * | 2013-12-27 | 2015-07-01 | 中粮营养健康研究院有限公司 | Method for subcritical fluid extraction of tea extract |
| CN103789996A (en) * | 2014-01-07 | 2014-05-14 | 郑州大学 | Method for removing scale of wool by subcritical dry cleaning technology |
| CN103789996B (en) * | 2014-01-07 | 2016-06-15 | 郑州大学 | A kind of method utilizing subcritical dry cleaning technology to remove wool scale |
| CN104096381A (en) * | 2014-07-09 | 2014-10-15 | 郑州大学 | Method for extracting effective components of natural products through mixing of ethyl alcohol and sub-critical fluid |
| CN104096381B (en) * | 2014-07-09 | 2017-05-17 | 郑州大学 | Method for extracting effective components of natural products through mixing of ethyl alcohol and sub-critical fluid |
| CN104845732A (en) * | 2015-05-06 | 2015-08-19 | 福建荣安天然植物开发有限公司 | Method for efficiently extracting ganoderma lucidum spores oil by using subcritical mixed solvent |
| CN106118885A (en) * | 2016-07-22 | 2016-11-16 | 福建中烟工业有限责任公司 | Fine manipulation of tea leaves product extract, its preparation method and the application in Nicotiana tabacum L. thereof |
| CN113528185A (en) * | 2021-07-30 | 2021-10-22 | 南京工业大学 | Method for extracting paraffin from wax residue |
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Application publication date: 20131225 |