CN102002089B - Process for extracting tea saponin from tea seed cakes or meal - Google Patents

Process for extracting tea saponin from tea seed cakes or meal Download PDF

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CN102002089B
CN102002089B CN201010541011A CN201010541011A CN102002089B CN 102002089 B CN102002089 B CN 102002089B CN 201010541011 A CN201010541011 A CN 201010541011A CN 201010541011 A CN201010541011 A CN 201010541011A CN 102002089 B CN102002089 B CN 102002089B
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tea
solvent
raw material
saponin
extraction
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CN102002089A (en
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吴峻
周昭宏
刘文才
潘宇峰
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ANHUI YINGSHANHONG BIOLOGICAL TECHNOLOGY Co Ltd
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ANHUI YINGSHANHONG BIOLOGICAL TECHNOLOGY Co Ltd
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Abstract

The invention relates to a process for extracting tea saponin from tea seed cakes or meal after oil frying by applying an industrial production device. The process comprises the following steps: crushing the tea seed cakes or the meal (leading the particle size to be 1-3mm), then sending into a steaming and stir-frying cauldron, drying (preventing the water content from exceeding 7%), then leading the material to enter into a material storage cylinder, using a screw conveyor to send the material into a rotocel extractor, and adding a solvent for extraction; carrying out residue-liquid separation (the meal residue can be used as a feed or a fertilizer) after double extraction, leading extraction solution to enter into a long pipe evaporator, removing part of water by double evaporation, and recycling the solvent (which can be recycled); and concentrating the extraction solution via a vacuum concentration tank, then crystallizing and drying, and obtaining a fine saponin finished product for packaging and leaving a factory. A product produced by the process contains 81.5% of active matters, and the pH value is 5.9. Compared with other methods, the process has the advantages of high product purity, light color, high production rate (14%), energy conservation, low consumption, no pollution and environmental protection, and is easy for operation and the like.

Description

From tea waste, extract the technology of tea saponin
Technical field
The present invention relates to a kind of from from tea waste, extracting the technology of tea saponin.
Background technology
Tea saponin is a kind of nonionogenic tenside of excellent property; Emulsification, foaming, lubricated, surely there is good performance aspect such as bubble and decontamination, is widely used in material of construction, pesticide processing, aquaculture, food, light industry, medicine, wool spinning, industry such as knitting; Can be used for making various types of emulsifying agents, agricultural chemicals, rubber, extinguish material, cinestrip, Shampoo & Conditioner, foaming Steel Concrete, prawn culturing agent etc., can develop 180 surplus kind of series product, potentiality to be exploited is huge, market outlook are wide.About the extraction and the application of tea saponin, China has very years of researches and practice, and conclusion is got up, and 4 kinds of methods are arranged usually, and both water seaoning, absorption method, microwave/light wave dry method were extracted and the organic solvent extraction method.
Water seaoning is that tea-cake dregs is ground into meal, and 5 times hot water are added in the meal, under 30~35 ℃ of temperature, soaks 2h, and the lixiviate number of times is twice.Soak the back spinning, fertilizer is made in the residue oven dry.Merge vat liquor, add 2% flocculation agent, and leave standstill after being heated to certain temperature, separate and remove throw out, adopt the method for vacuum concentration that vat liquor is concentrated into 30 degree Beaume, get the liquid saponin.This production technique, equipment are simple, less investment, but yield rate is low, and the concentrate drying process consumes high, belongs to eliminating technology.
Absorption method adopts water or solvent lixiviate tea waste, with impurity such as the glycolipid in inorganics or the organic resin adsorbing and extracting liquid, juice, pigments, again through lixiviate, concentrate finished product.This method cost is high, yields poorly, and has pollution problem.Produce exhausted inorganics and organic resin difficult treatment in enormous quantities.
Organic solvent extraction method 1, solvent pairs substep extraction and separation process are removed grease remaining in the grouts with oil-dissolving solvent earlier, and the degreasing grouts are used 70%~95% organic solvent extraction saponin again, and the extracting solution process is filtered the back compression and concentrated, and gets thick saponin.2, single solvent extraction separating technology, this method obtains tea oil and two kinds of products of tea saponin simultaneously with a set of equipment, two kinds of solvents.Cake of camellia oleifera seeds is crushed to certain fineness, makes saponin dissolve leaching, again with stirring solvent mixing, extracting and separating, crude oil is isolated in clean then liquid layering, and remaining liquid gets thick saponin through concentrated, impurity elimination, reconcentration.Decolouring then, the dry finished product that gets.Its technology is loaded down with trivial details.Production process is used the very easily manufacturing environment pollution of multiple solvent.
The method of process for abstracting theasaponine by microwave/light wave dry, it is fluctuation, high frequency property, thermal property and a non-thermal property of utilizing little/light wave, and cake of camellia oleifera seeds is carried out dry process, lixiviate then, extraction, decolouring, drying are obtained the tea saponin finished product.Very convenient because of handling with microwave/light wave at a few hectogram raw materials of testing laboratory, tens tons in process of production, hundreds of ton have been handled just inconvenient with microwave/light wave, and consumes energy is huge.Moreover still want lixiviate, extraction, decolouring, drying after handling, its effect is not fairly obvious, has pollution problem simultaneously yet.
The present invention is in order to overcome the weak point that prior art exists, a kind of technology of from tea waste, extracting tea saponin to be provided, this technology have the product purity height, of light color, yield rate is high, energy-conservation, joint consumption, pollution-free, environmental protection, advantage such as easy to operate.
Summary of the invention
The present invention is in order to overcome the weak point that prior art exists, a kind of technology of from tea waste, extracting tea saponin to be provided, this technology have the product purity height, of light color, yield rate is high, energy-conservation, joint consumption, pollution-free, environmental protection, advantage such as easy to operate.
Technical solution problem of the present invention adopts following technical scheme:
From tea waste, extract the technology of tea saponin, comprise raw material pulverizing, oven dry, lixiviate, separation, concentrate, its process characteristic is:
Said raw material pulverizing is meant raw material pulverizing to granularity 1-3mm particulate state;
Said oven dry, be meant with the raw material after pulverizing deliver to automatic cooking pot dried through 10-30 minute to the raw material water cut less than 7%;
In the said lixiviate step, solvent is selected from the ethanolic soln that concentration is 75%-85%, and extraction time is 1-1.5 hour; Twice of lixiviate.
From tea waste, extract the technology of tea saponin, its process characteristic also is:
In the said lixiviate step, the temperature of extraction solvent is 40-50 ℃.
The weight ratio of said extraction solvent and tea waste is controlled at 3: 1-4: 1, promptly solvent be raw material 3-4 doubly.
In the said enrichment step, adopt the evaporation of secondary long tube, 50-80 ℃ of one-level temperature, 70-95 ℃ of secondary temperature; Automatically surplus temperature concentrates 2-4 hour naturally after importing vacuum concentration pot after 2-4 minute.
Compared with present technology, beneficial effect of the present invention is embodied in:
1, the present invention is crushed to the particulate state of 1-3mm with starting material leached tea oil slag or tea cake, and breaking in the past, people always think that starting material are thin more, the idea that saponin is leached more easily; Original technology is machined to 40 orders-120 order powdery with starting material, processes carefully to 300 orders, though the saponin dissolution rate after the pulverizing has been accelerated in addition even with it; But increased slag liquid separation difficulty degree; Simultaneously impurity such as a large amount of xylogen is present in the leach liquor, causes that saponin purity is low, color is dark, follow-uply also wants the removal of impurity, decolouring.The present invention has overcome former defective workmanship; Slag, liquid separate easily; Product purity is high, light; Reduced follow-up decolouring link, reduced tooling cost simultaneously, every day with tens of ton sometimes up to a hundred tons of tea cakes or the dregs of rice particulate state that is crushed to 1-3mm with former technology starting material are machined to 40 orders-120 order or 300 order powderies are compared the processing charges that will practice thrift thousands of units.
2, the present invention adopts stoving process, makes the starting material water content be no more than 7%, because of the excessive solvent of raw material moisture content is difficult for immersing, after oven dry, makes solvent be prone to immerse in the material, accelerates the saponin leaching velocity.
3, extraction solvent temperature of the present invention is 40-50 ℃, and the change of soaking temperature can have influence on the partition equilibrium of tea saponin at solid-liquid, because solvent extraction saponin and water specific rate are very fast, if improve solvent temperature, can quicken the dissolution rate of saponin.What have in the former technology does not heat, and the artificial leaching velocity that improves of great majority heats solvent temperature to more than 50 ℃.Do not heat or temperature to cross low leaching velocity slow, it is too high to heat, the saponin leaching velocity is accelerated, the pigment leaching velocity is accelerated simultaneously.And energy consumption is big, and the loss of solvent is also big.The present invention compares with former technology, and tea dregs of rice slag color is dark after separating, and also darker than the tea dregs of rice color of not extracting tea saponin, this explains that most of pigment remains in the slag.Energy-conservation, joint consumption that the present invention compares with former technology has increased one deck guarantee for reducing follow-up decolouring step simultaneously.
4, the production technique that the present invention's employing is flatted turn or pot group type combines.Leaching number of times is 2-3 time, and soak time 1-1.5h compares with former technology 2h-4h, improves work efficiency more than 1 times.
5, adopt the secondary long-tube evaportor in the enrichment step of the present invention; 50-80 ℃ of one-level temperature; Secondary 70-95 ℃, import vacuum concentration pot after 2-4 minute automatically and utilize surplus temperature to concentrate 2-4 hour naturally, adopt the ladder temperature to utilize temperature difference operation automatically from bottom to top; Improve the speed of concentrating, reduce solvent loss.Residual solvent all reclaims.Compare save energy and material consumption about 10% with former technology, and pollution-free.
6, the every equipment that contacts with saponin with solvent of production whole process of the present invention all adopts all steel manufacturing.And in whole sealing status, move.All round process only is suitable for a kind of solvent (ethanol), and recyclablely uses again.Deduct the decolouring link, overcome the environmental pollution that former technology uses multiple solvent, auxiliary agent to cause.The present invention is energy-conservation, joint consumes, environmental protection is fit to scale operation.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Below will combine embodiment that the present invention is further specified.
Embodiment:
Embodiment 1:
Take by weighing raw material 2000kg it be crushed to granularity 1-3mm particulate state, deliver to then cooking pot dried through 10-30 minute to the raw material water cut less than 7%; Using volumetric concentration then is that 75% ethanolic soln is as solvent; Solvent and tea waste carried out proportioning in 3: 1 by weight percentage; The entering digester of flatting turn is 40-50 ℃ of following lixiviate 1-1.5 hour in temperature, and twice back of lixiviate slag liquid separates automatically, and vat liquor gets into the secondary long-tube evaportor; 50-80 ℃ of one-level temperature, 70-95 ℃ of secondary temperature; Automatically surplus temperature concentrates 2-4 hour naturally after importing vacuum concentration pot after 2-4 minute, through dry light yellow powdery tea saponin 276kg, the yield rate 13.8% of getting.(product and feed ratio) exceeds 1.8% than former technology.Through chemical examination active matter content 81.5%; PH value 5.9.All meet or exceed former craft quality standard.
Embodiment 2
Take by weighing raw material 2000kg it be crushed to granularity 1-3mm particulate state, deliver to then cooking pot dried through 10-30 minute to the raw material water cut less than 7%; Use then volumetric concentration be 85% ethanolic soln as solvent, solvent and tea waste carried out proportioning in 4: 1 by weight percentage, getting into the digester of flatting turn is 40-50 ℃ of following lixiviate 1-1.5 hour in temperature; Twice back of lixiviate slag liquid separates automatically, and vat liquor gets into secondary long-tube evaportor, 50-80 ℃ of one-level temperature; 70-95 ℃ of secondary temperature; Automatically surplus temperature concentrates 2-4 hour naturally after importing vacuum concentration pot after 2-4 minute, through dry faint yellow powdery tea saponin 278.5kg, the yield rate 13.93% of getting.All reach and surpass former processing quality level through chemical examination.
Embodiment 3
Take by weighing 700 tons of raw materials, press embodiment 2 technological operations, move 17 days continuously (24 hours every days), obtain 98.5 tons of tea saponins at last.Yield rate 14.07%.Product sample presentation to Anhui Product Quality Supervision and Testing Institute checks, and tea saponin massfraction 64.30% exceeds 14% than former technology 50%; PH value 6.0 is than the high 0.1-0.3 of former technology; Active matter content 81.5% is than the high 5-15% of former technology; Color is light yellow and former resemble process.

Claims (3)

1. from tea waste, extract the technology of tea saponin, comprise raw material pulverizing, oven dry, lixiviate, separation, concentrate, it is characterized in that:
Said raw material pulverizing is meant raw material pulverizing to granularity 1-3mm particulate state;
Said oven dry, be meant with the raw material after pulverizing deliver to automatic cooking pot dried through 10-30 minute to the raw material water cut less than 7%;
In the said lixiviate step, solvent is selected from the ethanolic soln that concentration is 75%-85%, and extraction time is 1-1.5 hour; Twice of lixiviate;
In the said enrichment step, adopt the evaporation of secondary long tube, 50-80 ℃ of one-level temperature, 70-95 ℃ of secondary temperature; Automatically surplus temperature concentrates 2-4 hour naturally after importing vacuum concentration pot after 2-4 minute.
2. the technology of from tea waste, extracting tea saponin according to claim 1, it is characterized in that: in the said lixiviate step, the temperature of extraction solvent is 40-50 ℃.
3. the technology of from tea waste, extracting tea saponin according to claim 1, it is characterized in that: in the said lixiviate step, the weight ratio of extraction solvent and tea waste is controlled at 3: 1-4: 1, promptly solvent is 3-4 a times of raw material.
CN201010541011A 2010-11-12 2010-11-12 Process for extracting tea saponin from tea seed cakes or meal Active CN102002089B (en)

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CN102229637B (en) * 2011-04-18 2016-05-11 浙江久晟油茶科技股份有限公司 A kind of technique of extracting Tea Saponin employing membrane separation concentration
CN102250681B (en) * 2011-06-20 2012-10-31 江南大学 Method for extracting camellia oil and tea saporin from tea seeds
CN105238551B (en) * 2015-10-09 2018-12-21 福建天斯顿生物科技有限公司 A kind of supercritical CO2The method of abstraction purification camellia seed oil
CN105461780B (en) * 2015-12-09 2018-03-16 中国林业科学研究院亚热带林业研究所 A kind of inexpensive Tea Saponin high-efficiency and continuous extraction process
CN106565812B (en) * 2016-09-26 2018-12-07 中国林业科学研究院亚热带林业研究所 A kind of continuous Extraction solvent high efficiente callback technique of Tea Saponin
CN109456384A (en) * 2018-09-25 2019-03-12 江西久晟油茶发展有限公司 A kind of Tea Saponin negative pressure continuously leaches method for concentration
CN109628209A (en) * 2019-01-07 2019-04-16 蒋文昌 A kind of tea seed essence production technology
CN111187333A (en) * 2019-04-11 2020-05-22 杭州千岛湖天鑫有限公司 Method for extracting tea saponin applied to cosmetics
CN114231349A (en) * 2021-12-20 2022-03-25 查雨欣 Processing system of strong aromatic tea oil

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