CN101874529A - Method for extracting oil from camellia seed press residue by secondary pressing - Google Patents
Method for extracting oil from camellia seed press residue by secondary pressing Download PDFInfo
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- CN101874529A CN101874529A CN2009101385250A CN200910138525A CN101874529A CN 101874529 A CN101874529 A CN 101874529A CN 2009101385250 A CN2009101385250 A CN 2009101385250A CN 200910138525 A CN200910138525 A CN 200910138525A CN 101874529 A CN101874529 A CN 101874529A
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Abstract
The invention discloses a method for extracting oil from camellia seed press residue by secondary pressing, in particular the method for sequentially performing enzymolysis and secondary physical pressing on the remaining press residue after the primary pressing of hulled camellia seeds to reduce the press residue oil ratio and increase the oil yield. In the method, no solvent is used; and the method comprises the following steps of: pulverizing the camellia seed press residue into grains by using a pulverizer; mixing hot water at the temperature of between 45 and 55 DEG C and with a pH value of between 4.5 and 5 and the camellia seed press residue grains; keeping the temperature of the mixture of the hot water and the camellia seed press residue between 45 and 55 DEG C; adding aspergillus niger cellulase liquid for enzymolysis; conveying the camellia seed press residue after the enzymolysis into a low temperature screw press for the secondary pressing; performing centrifugal dehydration and vacuum dehydration on the water-oil mixture; and filtering the mixture with a filter to obtain the secondarily pressed camellia seed crude oil.
Description
Technical field
The present invention is a kind of method of extracting oil from camellia seed press residue by secondary pressing, is meant especially a kind ofly remaining marc behind the shelling camellia seed single pressing is carried out enzymolysis earlier to carry out the secondary physical squeezing again, reduces the marc residual oil content, increases the method for oil yield.
Background technology
Camellia seed oil is that the distinctive oil of a kind of China is planted, has higher nutritive value, the camellia seed oil processing factory method of extracting crude oil from the camellia seed is generally milling process and solvent lixiviation process traditionally, after physical squeezing to the camellia seed, generally there is the oil plant about 6% to 7% to be squeezed out in the camellia seed marc, remains in the marc.The oil residues of this part generally is to separate from camellia seed marc with the solvent lixiviation process.
The solvent lixiviation process is a kind of method of chemical extraction grease, the method is with No. six light petrols the oil plant in the marc to be dissolved in oil plant is separated with marc, utilize oil plant and No. six different principles of light petrol boiling point then, thereby No. six light petrols are sloughed camellia seed crude oil after obtaining leaching.No. six light petrols that use in the method by oil gained low boiling distillate through fractionation, remove and re-refine behind the aromatic hydrocarbons and get, main component is n-hexane and cyclohexane, also contain a spot of aromatic hydrocarbons and sulfide impurities, has the inflammable and explosive character of high volatilization, form hidden danger easily and cause accident in actual mechanical process, No. six light petrol can cause neural paralysis after suction, and aromatic hydrocarbons wherein and sulfide impurities have bigger toxicity.Because the character of No. six light petrols, the camellia seed crude oil that uses the solvent lixiviation process to extract also need to reduce solvent to be up to state standards by the technology of high temperature precipitation.
Characteristics between No. six light petrols of the employed solvent of solvent lixiviation process, no matter use which kind of precipitation technology, all can't fully solvent be removed from camellia seed crude oil fully, solvent more or less all can remain in the grease, and the solvent extract technology is as easy as rolling off a log to pollute atmosphere and water environment, after using the high temperature precipitation, can influence the local flavor of camellia seed crude oil and reduce the nutritive value that various active components in the crude oil influence camellia seed oil, so we need a kind of new method of extracting camellia seed crude oil from camellia seed marc both to guarantee to extract crude oil from marc higher oil yield is arranged, also will reach the technology environmental protection, safety, practical, easy purpose.
Marc behind the camellia seed single pressing in addition must residual oil content, these oily overwhelming majority are wrapped in the cell membrane, be difficult to utilize the method for physical squeezing to allow it separate merely with marc, but can utilize specific biology enzyme that marc is carried out must enzymolysis processing, and the cell membrane that destroys parcel grease in the marc makes grease be easy to separate with marc.
Mentioning a kind of elder generation the open CN 101096612A of Chinese patent application " a kind of extract the method for tea-seed oil from tea seed " adds the levigate water furnishing slurry that adds of tea seed kernel again amylase and cellulase and carries out the method that enzymolysis makes tea-seed oil separate with tea seed kernel and obtain tea-seed oil.The method is with tea seed kernel and water furnishing slurry, needs to add the water that advances 3 to 6 times of tea seed kernels, and causing like this needs to get rid of a large amount of water in follow-up water oil separating process, has increased the technology cost and has also reduced oil yield.The method is used the method for cellulase and amylase mixed enzymolysis tea seed kernel in addition, and the best pH value of cellulase degradation is 4.7-4.9, and suitable environment is about 55 ℃.This method proposes amylase enzymolysis need carry out enzymolysis at 90 ℃-105 ℃, so the temperature of tea seed kernel enzymolysis should be controlled between 40 ℃-95 ℃, if use this temperature, temperature range is excessive, relatively more difficult during adjusting, cellulase and diastatic best hydrolysis temperature differ greatly, and are difficult in and select optimum suitable temperature under the mixing situation.So be difficult to realize the high efficiency enzymolysis in the actual application.
The present invention selects with the aspergillus niger cellulase camellia seed marc to be carried out enzymolysis processing.The aspergillus niger cellulase is a kind of complex cellulase, can the enzymolysis marc in the cell membrane of main component, be convenient to that lubricant component separates with marc in the cell.The aspergillus niger cellulase is the plain enzyme of a kind of multicomponent fibre of complexity, and best enzymolysis pH value of each component enzyme and temperature are more or less the same, in industrial production than simple mixing cellulase and the suitable enzymatic hydrolysis condition of the easier grasp of amylase.
Summary of the invention
The method of a kind of camellia seed of the present invention marc twice pressing specifically comprises step:
(1) select the shelling single pressing for use after camellia seed marc send into pulverizer, pulverize, powder after the pulverizing filters through screen cloth, screen cloth passes through more than being made as 20 orders, the marc powder that can't pass through is sent pulverizer back to and is pulverized once more.
(2) the marc powder after the pulverizing is sent in the mixer and is stirred, slowly add hot water below 55 ℃ more than 45 ℃ in the stirring, add the stirring that does not stop in the water process, so that hot water and marc powder can mix fully, the adding speed of control hot water, can be so that the marc powder constantly soaks because of the local desiccation conglomeration, the total amount that adds hot water is 40% of a marc quality, average mark is made into three times and adds, after slowly stirring fully, marc powder and water are mixed, and mixing time is 1 hour, and temperature of charge remains on more than 45 ℃ below 55 ℃ during stirring.The hot water that adds is adjusted to pH value between the 4.5-5 with citric acid in advance.
(3) the aspergillus niger cellulase solution with camellia seed marc 1%-10% quality adds in the mixed material that obtains in the step (two), and agitator continues to stir in the enzyme liquid adition process, makes enzyme liquid and camellia seed marc fully mix time remaining one hour.Stir that the standing mixt material carried out enzymolysis in 3 hours after one hour, hydrolysis temperature is controlled at 45 ℃-55 ℃.
(4) material that obtains in (three) is sent into the low temperature pressafiner, use cooling device to keep pressing the hall temperature, carry out twice pressing, collect oil water mixture at oil-out more than 45 ℃ below 55 ℃.
(5) after oil water mixture is sent into the centrifugal drier centrifugal dehydration, isolate water and oil phase.
(6) oil phase is sent into vacuum hydroextractor, carries out reduced vacuum dehydration, drain water after, oil is sent into filter filters, after remaining marc residue and oil content are left, obtain camellia seed crude oil.
The present invention has following characteristics:
(1) whole processing procedure again to camellia seed marc is not used any solvent, can not pollute atmosphere, water source, does not contain any solvent in the oil of twice pressing.
(2) because residual solvent does not need to carry out the high temperature precipitation, only need carry out the vacuum cool-down dehydration in the camellia seed crude oil that extracts, can save the energy greatly.
(3) because do not carry out the high-temperature steam precipitation, can keep the distinctive fragrance of camellia seed oil in the camellia seed crude oil to greatest extent, the camellia seed oil oxidation stain that can also avoid high temperature to cause.
(4) water that centrifugation is come out from the water oil mixture is that thick Tea Saponin can further be processed the more highly purified Tea Saponin of extraction through the distillation remaining solid residue that obtains after the vacuum dehydration.
(5) the camellia seed marc behind the twice pressing does not need can directly produce as the raw material of feed or fertilizer through precipitation technology.
(6) use twice pressing camellia seed marc of the present invention to be reduced to 1%～2% to the residual oil content in the camellia seed marc from 6% to 7%, though the method is reducing aspect the camellia seed marc residual oil content a little less than the solvent lixiviation process, but consider and do not use solvent in the process, do not need to use high temperature precipitation technology, save the energy and cost of material, and do not cause big G﹠W to pollute, but also can obtain thick Tea Saponin of byproduct and feed, so in general this method is more practical more economically than solvent lixiviation process.
Specific implementation method
With twice pressing double centner camellia seed marc is example.
(1) get shelling squeezing back camellia seed marc double centner, use beater disintegrating machine to pulverize, the particle after the pulverizing is crossed 20 eye mesh screens, and the particle that can't pass through is sent pulverizer once more back to and pulverized once more.
(2) get 40 kilograms of hot water and add citric acids, the hot water pH value is adjusted to 4.5-5, keep the hot water temperature more than 45 ℃ below 55 ℃.
(3) the camellia seed marc particle after will pulverizing is sent in the mixer and is stirred; add simultaneously slowly that pH value below 55 ℃ is the hot water of 4.5-5 more than 45 ℃; the total amount that adds hot water is 40% of a camellia seed marc granular mass; quality is 40 kilograms; be equally divided into three parts; dividing three times adds; after adding first's hot water; suspend and add hot water; continue to use mixer to stir; prevent the conglomeration of camellia seed marc particle, treat that first's hot water and camellia seed marc particle mix after, add second portion hot water again; with this repeatedly; the hot water and the camellia seed marc that add for three times can fully be mixed, and whole mixing process will continue 1 hour, and temperature of charge remains on more than 45 ℃ below 55 ℃.
(4) 5 kilograms of aspergillus niger cellulase solutions are advanced in interpolation in the mixing camellia seed marc material that (3) obtain, agitator continues to stir in the adition process, stop to stir after aspergillus niger cellulase solution and marc material fully mixed, material is remained on to leave standstill below 55 ℃ more than 45 ℃ carried out enzymolysis in 3 hours.
(5) the camellia seed marc behind the enzymolysis being sent into the low temperature expeller squeezes, use cooling system to guarantee to press the hall temperature maintenance more than 45 ℃ below 55 ℃, collect the oil water mixture that squeezes out from oil-out, mixture sent into carry out centrifugal dehydration in the centrifugal dehydrator, centrifuge speed is controlled at 4000r/m, isolates 4.8 kilograms of independent oil phases.Isolated water can be used for extracting thick Tea Saponin and uses.
(6) oil phase is sent into being carried out reduced vacuum dehydration in the vacuum dehydration still, treat no water smoke in the still, drain surplus water, is to obtain 4.1 kilograms of the camellia seed crude oil that twice pressing goes out from camellia seed marc after the filtration of 100 purpose filters through filter core again.
Claims (1)
1. the method for an extracting oil from camellia seed press residue by secondary pressing is characterized in that:
(1) camellia seed marc is sent into beater disintegrating machine, pulverize, the powder after the pulverizing filters through screen cloth, and screen cloth passes through more than being made as 20 orders, and the marc powder that can't pass through is sent pulverizer back to and pulverized once more.
(2) get the hot water of camellia seed marc 40% quality, add citric acid and regulate the hot water pH value between 4.5-5, temperature is controlled at more than 45 ℃ below 55 ℃.
(3) the marc powder after the pulverizing is sent in the mixer and is stirred, slowly add the hot water in the step (2) in the stirring, hot water is divided into three addings, add the stirring that does not stop in the water process, so that hot water and marc powder can mix fully, mixing time is 1 hour, and temperature of charge remains on more than 45 ℃ below 55 ℃ during stirring.
(4) the aspergillus niger cellulase solution of getting camellia seed marc 1%-10% quality adds in the camellia seed marc material that step (3) obtains, in the adition process mixer do not stop to stir aspergillus niger cellulase solution and material are stirred after, stop mixer, the standing mixt material carried out enzymolysis in 3 hours, and temperature of charge remains on 45 ℃-55 ℃ in the enzymolysis process.
(5) the camellia seed marc behind the enzymolysis is sent into the low temperature pressafiner, carry out twice pressing, use cooling system control to press in the hall temperature of charge during squeezing, collect oil water mixture at oil-out more than 45 ℃ below 55 ℃.
(6) use centrifugal dehydrator that above-mentioned oil water mixture is carried out centrifugal dehydration, isolate oil phase.
(7) oil phase of separating in the step (6) being carried out vacuum dehydration, is to obtain camellia seed crude oil after 100 purpose filters filter through filter core again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101385250A CN101874529A (en) | 2009-04-30 | 2009-04-30 | Method for extracting oil from camellia seed press residue by secondary pressing |
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| CN2009101385250A CN101874529A (en) | 2009-04-30 | 2009-04-30 | Method for extracting oil from camellia seed press residue by secondary pressing |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191124A (en) * | 2011-03-23 | 2011-09-21 | 武汉普赛特膜技术循环利用有限公司 | Method for extracting tea-seed oil and tea saponin by using biological method |
| CN103484241A (en) * | 2013-09-29 | 2014-01-01 | 东北农业大学 | Method for preparing evening primrose oil with twice cold pressing method |
| CN106281644A (en) * | 2016-08-12 | 2017-01-04 | 安徽未来农业发展有限公司 | A kind of chlorella Camellia oil promoting infants growth and development and preparation method thereof |
| CN106318599A (en) * | 2016-08-31 | 2017-01-11 | 浙江工业大学 | Method for increasing yield of camellia seed oil extracted with aqueous enzymatic method |
| CN112552993A (en) * | 2020-11-20 | 2021-03-26 | 湘西倍益康农副产品开发有限公司 | Preparation method of camellia oil |
-
2009
- 2009-04-30 CN CN2009101385250A patent/CN101874529A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191124A (en) * | 2011-03-23 | 2011-09-21 | 武汉普赛特膜技术循环利用有限公司 | Method for extracting tea-seed oil and tea saponin by using biological method |
| CN102191124B (en) * | 2011-03-23 | 2012-10-10 | 武汉普赛特膜技术循环利用有限公司 | Method for extracting tea-seed oil and tea saponin by using biological method |
| CN103484241A (en) * | 2013-09-29 | 2014-01-01 | 东北农业大学 | Method for preparing evening primrose oil with twice cold pressing method |
| CN106281644A (en) * | 2016-08-12 | 2017-01-04 | 安徽未来农业发展有限公司 | A kind of chlorella Camellia oil promoting infants growth and development and preparation method thereof |
| CN106318599A (en) * | 2016-08-31 | 2017-01-11 | 浙江工业大学 | Method for increasing yield of camellia seed oil extracted with aqueous enzymatic method |
| CN112552993A (en) * | 2020-11-20 | 2021-03-26 | 湘西倍益康农副产品开发有限公司 | Preparation method of camellia oil |
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Application publication date: 20101103 |