CN106479667A - A kind of method extracting tea-seed oil - Google Patents
A kind of method extracting tea-seed oil Download PDFInfo
- Publication number
- CN106479667A CN106479667A CN201610991309.0A CN201610991309A CN106479667A CN 106479667 A CN106479667 A CN 106479667A CN 201610991309 A CN201610991309 A CN 201610991309A CN 106479667 A CN106479667 A CN 106479667A
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- CN
- China
- Prior art keywords
- tea
- seed
- carbon dioxide
- seed oil
- extraction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/02—Pretreatment
- C11B1/04—Pretreatment of vegetable raw material
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/10—Production of fats or fatty oils from raw materials by extracting
- C11B1/104—Production of fats or fatty oils from raw materials by extracting using super critical gases or vapours
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B3/00—Refining fats or fatty oils
- C11B3/16—Refining fats or fatty oils by mechanical means
Abstract
The present invention relates to food processing field, more particularly, to a kind of extracting method of edible oil, tea-seed oil is extracted from tea-seed using supercritical carbon dioxide, dicyandiamide solution used is CO 2 fluid, deodorize and extraction complete in supercritical carbon dioxide equipment simultaneously, obtain extracting tea-seed oil after shelling, pulverizing, supercritical carbon dioxide deodorize, extraction, separation, centrifugation；Before using supercritical carbon dioxide extraction, tea-seed is adopted hot-air seasoning：Tea-seed level is laid in each metafiltration net in heater box, opens the hot blast that wind speed is 7m/s 10m/s and tea-seed is toasted, until the moisture content of tea-seed is 4% 5%, and the temperature of this hot blast is 60 DEG C 75 DEG C.By implementing the technical program, reduce the resid amount in oil meal thus improving the utilization rate of tea-seed oil.
Description
Technical field
The present invention relates to food processing field, more particularly, to a kind of extracting method of edible oil.
Background technology
Tea-seed oil, is a kind of edible vegetable oil.The chemical composition of tea-seed oil be mainly Oleic acid, linoleic acid, linolenic acid,
Palmic acid, stearic acid, VE and tea polyphenols etc..Tea-seed oil in tea-seed content between 10%～30%.
Tea-seed oil conventional production methods have milling process, solvent extraction method, and milling process is to be incited somebody to action using the method for mechanical expression
Tea-seed oil in tea-seed squeezes out, and milling process has the advantages that equipment investment is few, and shortcoming is can not to extract Folium Camelliae sinensis completely
Tea-seed oil in seed.Solvent extraction method be done from ethanol, ether, acetone, dichloroethanes, ethyl acetate, n-hexane etc. molten
Agent is extracted the tea-seed oil in tea-seed using the direct mode such as backflow, surname extraction, extraction, solvent extraction method excellent
Point is that product oil yield is high, and shortcoming is that there is certain dissolvent residual in product.
In order to meet food industry, the high-quality of tea-seed oil is required, the applicant discloses notification number and is
The patent documentation of CN102965191A, it is to extract tea-seed oil from tea-seed using supercritical carbon dioxide, and used is molten
Agent system is CO 2 fluid, and deodorize and extraction complete in supercritical carbon dioxide equipment simultaneously, through shelling, pulverizes, surpasses
Critical carbon dioxide deodorize, extraction, separation, centrifugation after obtain extract tea-seed oil.But in practice, it has been found that extract tea-seed oil
The resid amount in oil meal afterwards is higher, and up to 8%, reduce the utilization rate of tea-seed oil.
Content of the invention
The invention is intended to providing a kind of method extracting tea-seed oil, to reduce the resid amount in oil meal thus improving tea
The utilization rate of leaf seed oil.
For reaching above-mentioned purpose, the base case of the present invention is as follows：The method extracting tea-seed oil, using supercritical dioxy
Change carbon and extract tea-seed oil from tea-seed, dicyandiamide solution used is CO 2 fluid, deodorize and extraction are faced super simultaneously
Complete in boundary's carbon dioxide plants, extracted after shelling, pulverizing, supercritical carbon dioxide deodorize, extraction, separation, centrifugation
Tea-seed oil, before using supercritical carbon dioxide extraction, tea-seed is adopted hot-air seasoning：Tea-seed level is laid on
In each metafiltration net in heater box, open the hot blast that wind speed is 7m/s-10m/s and tea-seed is toasted, until tea-seed
Moisture content is 4%-5%, and the temperature of this hot blast is 60 DEG C -75 DEG C.
The principle of this programme and advantage are：
1st, in this programme before using supercritical carbon dioxide extraction, the moisture content of tea-seed is dried 4%-5%, with
Reduce the resid amount in oil meal, show that through test data the residual oil content of oil meal can as little as 0.81%；If moisture content is less than
3% extraction being unfavorable for supercritical carbon dioxide, if above 5%, moisture can be formed on the surface of tea-seed one layer very thin
The moisture film near continuous phase, thus hindering the infiltration of supercritical carbon dioxide, reduce dissolubility, ultimately cause oil mass extraction
The low problem of rate.
2nd, by the way of using wind speed, the hot blast for 7m/s-10m/s toasts to tea-seed, by hot blast to tea-seed
During carrying out heat radiation baking, blown using the wind blows tea-seed of 7m/s-10m/s so as to not stop to turn on filter screen
Dynamic it is ensured that tea-seed homogeneous heating, it is to avoid present in traditional heat transfer mode of heating, local heating is uneven, and leads to Folium Camelliae sinensis
The problem of seed oil slightly astringent taste.
3rd, tea-seed is divided paved in multi-layers in heater box, limit the weight of every layer of tea-seed it is ensured that hot blast is by tea-seed
Blow, so that each tea-seed is heated evenly.And in this programme, employ filter screen, starting hot blast, this hot blast is with 7m/s-
The superiors from heater box for the wind speed of 10m/s move to lower floor, moving to the superiors from orlop, form circulated air thus
Accelerate the drying of tea-seed.
Preferred version 1：Based on scheme improvement, before using supercritical carbon dioxide extraction, the containing of tea-seed
Water rate is 4.5%, the results showed, the residual oil content of the oil meal that the tea-seed of this moisture content produces can as little as 0.81%.
Preferred version 2：Preferably 1 improvement, the wind speed of described hot blast is 8m/s, is stirring in guarantee tea-seed
During, larger impact force will not be produced each other and produce oils and fatss, it is to avoid fat residue is in heater box.
Preferred version 3：Preferably 2 improvement, the extracting pressure of described CO 2 fluid is 42MPa, beneficial
Effect, the tea-seed oil pure color obtaining, no turbid phenomenon.
Specific embodiment
First, below this preparation method is prepared with different parameters, concrete such as table 1.
Table 1
Operated with the parameter of embodiment 1 in table 1 below.
Step 1, weigh 100kg tea-seed shelling：Tea-seed is shelled；
Step 2, pulverizing：Tea-seed is pulverized；
Step 3, tea-seed is adopted hot-air seasoning：Tea-seed level is laid in each metafiltration net in heater box, opens
Open the hot blast that wind speed is 7m/s tea-seed is toasted, until the moisture content of tea-seed is 4%, and the temperature of this hot blast is 60
℃.
Step 4, supercritical carbon dioxide deodorize：Using the stink substance polarity feature lower than tea-seed oil, first with super
Critical carbon dioxide extracts tea-seed stink substance, then extracts tea-seed oil, specific as follows：
First by extraction kettle and separating still recirculated water press preset temperature preheating, simultaneously by carbon dioxide open be preheated to 7MPa,
Refrigerator temperature refrigeration is to after 3 DEG C.The tea-seed powder pulverized is weighed and loads in extraction kettle material pot, cover material top ends of cans.Open
Open high-pressure pump, adjust extracting pressure and separating pressure by technological parameter, after pressure stabilisation perform every record of production, deodorize is opened
Begin, extraction time is 0.5 hour, separates stink substance.
The process conditions of deodorize extraction：
Deodorize extractant：Carbon dioxide；
Deodorize Solvent quantity：30 liters/second；
Deodorize extraction temperature：55℃；
Deodorize extracting pressure：10MPa；
Deodorize extraction time：0.5 hour.
Step 5, supercritical carbon dioxide extraction：Folium Camelliae sinensis powder of seeds after weighing is loaded supercritical carbon dioxide extraction kettle
In, CO 2 fluid is injected by kettle by high-pressure pump, allows CO 2 fluid fully permeate tea-seed powder, make tea-seed oil
In dissolving carbon dioxide in the supercritical state.
The process conditions of extraction：
Extractant：Carbon dioxide；
Solvent quantity：15-40 liter/second；
Extraction temperature：40-65℃；
Extracting pressure：30MPa；
Extraction time：2 hours.
Step 6, separation：It is subject to the larger feature of pressure and temperature effect using Solubilities of Carbon Dioxide, by decrease temperature and pressure
The tea-seed oil being dissolved in fluid separates out, and remains after remaining CO 2 fluid enters secondary separation and enters storage tank, obtains
Coarse leaves seed oil.Separation condition：Separating still pressure：7MPa；Separating still temperature：55℃；
Step 7, centrifugation：Again coarse leaves seed oil is removed water and impurity with centrifuge, obtain pure tea-seed oil, centrifuge
Rotating speed 2500rpm/min.
Supercritical carbon dioxide extraction of the present invention refers to obtain using supercritical carbon dioxide extraction tea-seed
To tea-seed oil.Under the conditions of uniform temperature, change the polarity that CO 2 fluid pressure can change fluid, using program liter
Pressure, you can carry out separating by the important effective ingredient of opposed polarity.More than critical curve, each component in a fluid can be any
Ratio is mutually mixed, but when entering below critical curve, each component then can occur precipitation phenomenon, therefore passes through to change carbon dioxide
Fluid pressure or simultaneously change temperature are allowed in the material of the following opposed polarity of critical curve be separable precipitation.
The embodiment of embodiment 2,3 and comparative example 1-5 except parameter difference in addition to, other all sames.
Detection method：
The mouthfeel of the tea-seed oil extracting in the various embodiments described above and comparative example is detected, and to tea-seed oil grouts
Carry out residual oil content detection.
1. it is directed to the test method of tea-seed oil mouthfeel：The normal experimenter of 20 sense of taste of selection, to taste, such as has more than 2
People thinks burning or astringent taste, and this shows that this camellia seed oil has burning or astringent taste, otherwise shows this camellia seed oil pure taste.
2. it is directed to the detection of tea-seed oil grouts resid amount：The air compressor machine being produced using Shanghai Jing Yuan Science and Technology Ltd. is residual
Quantity detector detects to tea-seed oil grouts.
Testing result：
Table 2
Testing result from table 2 can be seen that the tea-seed oil pure in mouth feel extracted using this method, and oil meal
Residual oil content as little as 0.81%.And different problems are had using the testing result that the method for each comparative example obtains, comparative example 1,
2nd, 3,5 all have mouthfeel astringent taste or burning, and comparative example 4 is then the high problem of residual oil content of oil meal.
Above-described is only embodiments of the invention, the general knowledge here such as known concrete structure and/or characteristic in scheme
Excessively describe.It should be pointed out that for a person skilled in the art, without departing from the inventive concept of the premise, also
Some deformation can be made and improve, these also should be considered as protection scope of the present invention, these are real all without the impact present invention
The effect applied and practical applicability.This application claims protection domain should be defined by the content of its claim, description
In specific embodiment etc. record the content that can be used for explaining claim.
Claims (4)
1. the method extracting tea-seed oil, extracts tea-seed oil using supercritical carbon dioxide from tea-seed, solvent used
System is CO 2 fluid, and deodorize and extraction complete in supercritical carbon dioxide equipment simultaneously, through shelling, pulverizes, surpasses and face
Boundary's carbon dioxide deodorize, extraction, separation, centrifugation after obtain extract tea-seed oil；
It is characterized in that, before using supercritical carbon dioxide extraction, tea-seed is adopted hot-air seasoning：By tea-seed level
It is laid in each metafiltration net in heater box, open the hot blast that wind speed is 7m/s -10m/s and tea-seed is toasted, until tea
The moisture content of leaf seed is 4%-5%, and the temperature of this hot blast is 60 DEG C -75 DEG C.
2. according to claim 1 extract tea-seed oil method it is characterised in that：Extracted using supercritical carbon dioxide
Before taking, the moisture content of tea-seed is 4.5%.
3. according to claim 2 extract tea-seed oil method it is characterised in that：The wind speed of described hot blast is 8m/s.
4. according to claim 3 extract tea-seed oil method it is characterised in that：The extraction of described CO 2 fluid
Pressure is 42MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610991309.0A CN106479667A (en) | 2016-11-10 | 2016-11-10 | A kind of method extracting tea-seed oil |
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| CN201610991309.0A CN106479667A (en) | 2016-11-10 | 2016-11-10 | A kind of method extracting tea-seed oil |
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| CN201610991309.0A Pending CN106479667A (en) | 2016-11-10 | 2016-11-10 | A kind of method extracting tea-seed oil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109628204A (en) * | 2018-12-29 | 2019-04-16 | 金华市农业科学研究院 | A kind of Luzhou-flavor tea seed oil preparation method of deodorization |
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|---|---|---|---|---|
| CN101406221A (en) * | 2007-10-12 | 2009-04-15 | 金德国 | Extraction method for improving oil yield of tea seed |
| CN102641387A (en) * | 2012-05-03 | 2012-08-22 | 天津大学 | Method for supercritically extracting natural activity ingredient oil tea polyphenol from oil tea fruits |
| CN102965191A (en) * | 2012-12-17 | 2013-03-13 | 贵州泰谷农业科技有限公司 | Production method for extracting tea leaf seed oil |
| CN103232519A (en) * | 2013-05-08 | 2013-08-07 | 吉首大学 | Technical method for continuously extracting effective ingredients in tea seeds |
| CN103305334A (en) * | 2012-03-14 | 2013-09-18 | 湖南湘纯农业科技有限公司 | Method for extracting tea oil by cold pressing and solvent leaching technique in stages |
| CN105018218A (en) * | 2015-06-30 | 2015-11-04 | 重庆丰兴源生态农业发展有限公司 | Supercritical extraction method of tea seed oil |
-
2016
- 2016-11-10 CN CN201610991309.0A patent/CN106479667A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| CN101406221A (en) * | 2007-10-12 | 2009-04-15 | 金德国 | Extraction method for improving oil yield of tea seed |
| CN103305334A (en) * | 2012-03-14 | 2013-09-18 | 湖南湘纯农业科技有限公司 | Method for extracting tea oil by cold pressing and solvent leaching technique in stages |
| CN102641387A (en) * | 2012-05-03 | 2012-08-22 | 天津大学 | Method for supercritically extracting natural activity ingredient oil tea polyphenol from oil tea fruits |
| CN102965191A (en) * | 2012-12-17 | 2013-03-13 | 贵州泰谷农业科技有限公司 | Production method for extracting tea leaf seed oil |
| CN103232519A (en) * | 2013-05-08 | 2013-08-07 | 吉首大学 | Technical method for continuously extracting effective ingredients in tea seeds |
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Cited By (1)
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|---|---|---|---|---|
| CN109628204A (en) * | 2018-12-29 | 2019-04-16 | 金华市农业科学研究院 | A kind of Luzhou-flavor tea seed oil preparation method of deodorization |
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