CN103254991A - Green processing method of virgin tea oil - Google Patents
Green processing method of virgin tea oil Download PDFInfo
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- CN103254991A CN103254991A CN2013101944612A CN201310194461A CN103254991A CN 103254991 A CN103254991 A CN 103254991A CN 2013101944612 A CN2013101944612 A CN 2013101944612A CN 201310194461 A CN201310194461 A CN 201310194461A CN 103254991 A CN103254991 A CN 103254991A
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Abstract
The invention relates to a green processing method of green virgin tea oil. At present, no green tea oil processing method which has the advantages of low pressing and refining temperature, low energy consumption and fewer steps is available. The green processing method comprises the following steps of: selecting and picking mature tea seeds; seeking and removing mildewed and flat tea seeds within 24 hours; drying the obtained tea seeds in a microwave vacuum way until the content of water reaches 5 to 9%; hulling, wherein the hulling rate is over 99%; removing the hulls, wherein the hull content is less than 0.5%; cold pressing the treated tea seeds in a cold-pressing machine to obtain the tea oil, wherein the oil discharge temperature is below 100 DEG C, and the oil discharge rate is 50%-80%; removing solid impurities from the pressed tea oil through a drum-film type plate-and-frame filter press; adding the filtered tea oil into a settling tank; feeding pressurizing air; maintaining the pressure to 0.12 to 0.14Mpa and temperature to 0 to 10 DEG C for 1 to 20 days; educing the upper settled tea oil; and canning to obtain the finished product. The green processing method provided by the invention is simple in technology, low in energy consumption and high in product quality.
Description
Technical field
The present invention relates to a kind of working method of tea-seed oil, especially relate to a kind of green and gently press the tea oil working method, belong to the green processing technology that camellia seed and tea-seed gently press oil, natural subsidence.
Background technology
Camellia seed and tea-seed, it is the seed from plant of theaceae oil tea and tealeaves, be one of the most ancient traditional woody edible vegetable oil of China, it is very reasonable that its lipid acid is formed, and contain multiple nutrients and functionally active materials such as tea polysaccharide, saponin, flavones, tea-polyphenol, VITAMIN and plant sterol, often edible tea-seed oil has effects such as falling three height, raising immunizing power, radioprotective, removing free radical, prophylaxis of tumours, is the external application oil of a kind of health-care edible oil and health care.
The technology of obtaining of tea-seed oil adopts lixiviate system oil substantially or steams the stir-fry milling process at present, and the refinery practice of crude oil adopts hydration degum-alkali-refining deacidification-washing-filtration decolouring-high-temperature steam deodorization-winterization degreasing-processed oil substantially.
The lengthening of harvesting and pre-treatment time, all can make as long seasoning, lixiviate and steaming and frying technique and to have a large amount of free fatty acidies in the oil, acid value is improved, thereby cause that superoxide produces in a large number in the oil, make following process must adopt chemical refining technology, chemical refining need add in the alkali lye and free fatty acids, steps such as high temperature deodorization, can make nutrition contents such as vitamin contents in the processed oil, plant sterol be down to extremely low, both destroyed the nutrition of Camellia oil, the discharging of alkali refining waste liquid can cause environmental pollution again.
Polycyclic aromatic hydrocarbons is the class chemical carcinogen that people are familiar with the earliest, and what wherein pollution was the widest, content maximum, carinogenicity is the strongest is exactly benzo (a) pyrene.Benzo (a) pyrene is wide at the occurring in nature distributed pole, is a kind of common high reactivity indirect acting carcinogens.Studies show that, in the tea seed shells and tea Pu in most areas, all contain benzo (a) pyrene more or less, and in the tea seed course of processing, steam fry and the courses of processing such as high temperature squeezing in high temperature can generate more benzo (a) pyrene, be that subsequent fine processing increases difficulty.
Now also there are some to squeeze the working method of tea oil relatively preferably, as openly day is on October 31st, 2012, publication number is in the Chinese patent of CN102757858A, discloses a kind of duplex low temperature pressing making method of tea oil, and this method may further comprise the steps: a) oven drying at low temperature; Use plate dryer and vacuum fan to dry the tea seed after the screening, bake out temperature is 45-55 ℃, and drying time is 55-65min, the tea seed water ratio 6-10% after the oven dry; B) separation of peeling off; C) low temperature pressing; D) leave standstill filtration; E) winterization is handled; F) finished product; Though this method is squeezed and is left standstill filtration process by oven drying at low temperature, double spiral squeezer and can avoid the superheated of oil plant and too much chemical treatment, it is residual to produce objectionable impurities when avoiding high temperature process, also avoid because adding acid, alkali, the heavy-metal residual that chemical additive causes, but, the complex process of this method is difficult to effectively guarantee low acid number and the low peroxide value of product.And for example open day is on November 07th, 2012, publication number is in the Chinese patent of CN102766527A, a kind of tea seed oil low temperature pressing, process for purification are disclosed, this method comprises steps such as tea-seed oven drying at low temperature, seed shell separate, low temperature pushes squeezing, crude oil is refining, and (1) is at first collected crude oil filtration, filter screen cleaning, dragged for the continuous cycle operation of slag deslagging when refining under normal pressure; (2) leave standstill crude oil, be heated to 50-60 ℃ of insulation, and constant temperature left standstill moisture and impurity in the separation removal oil 60-72 hour; (3) and then with removal of impurities crude oil low temperature dewatering 2-3h under 55-60 ℃, 720mmHg vacuum, remove below the water content in oil to 0.1%; (4) crude oil that will dewater leaves standstill under 5 ℃, and crystallization, growing the grain 48h separate out wax in the oil with ester matter and separate; (5) will carry out the barrier film press filtration except brilliant back tea seed oil, operating pressure 0.3Mpa removes wax and ester matter in the oil, obtains refining tea seed oil; Though the energy consumption of this method is low, the oil yield height,, this method also is difficult to effectively guarantee low acid number and the low peroxide value of product, and nuisance such as no benzopyrene in the product.Open day is on 06 27th, 2012 for another example, and publication number is in the Chinese patent of CN102517141A, discloses the method that a kind of pure physical low-temperature is produced Camellia oil, and this method may further comprise the steps: 1, oven dry is handled; 2, shelling is handled; 3, squeezing crude oil; 4, obtain tea oil after the filtration; 5, tea oil is washed, washing comprised for two steps; 6, the tea oil after the washing carries out the deodorization processing; 7, drying and cooling process; 8, low temperature growing the grain; 9, smart filter; The omnidistance processing of this method all adopted pure physical technology, do not have chemical substance to add, and still, this method also needs to handle through the high temperature deodorization.
In sum, do not have also at present that a kind of squeezing is low with refining temperature, energy consumption is low, step is few, be of high nutritive value, the green tea oil working method of acid number and nuisances such as peroxide value is low, no benzopyrene.
Summary of the invention
The objective of the invention is to overcome above shortcomings in existing tea-seed oil pre-treatment, Technology in Pressing and the refinery practice, and a kind of simple, energy consumption is low, quality product is high green light tea oil working method of pressing is provided, avoided environmental pollution, the long time stored Exposure to Sunlight of raw material, high temperature to steam frying, high temperature squeezing and chemical refining process be to the infringement of oil quality.
The present invention addresses the above problem the technical scheme that adopts: the characteristics that this green is gently pressed the tea oil working method are: may further comprise the steps:
(1) choose and pluck ripe tea seed, choose to pick up to reject and go mouldy and flat tea seed, this step was finished in 24 hours.Choose to pick up to reject and go mouldy and flat seed, be conducive to promote the quality of tea oil, this is because immature tea seed, flat seed and the seed that goes mouldy can make the free fatty acids of product increase, and has the risk that increases aflatoxin and polycyclic aromatic hydrocarbons in the product; After the tea seed is plucked, through the high temperature after-ripening, can increase the oil length of tea seed on a small quantity, but harm such as free fatty acids raising and peroxide value increase have also been brought simultaneously, so pluck among the present invention, transport and choose and pick up process need and in 24 hours, finish, guarantee that thus squeezing obtains tea oil best in quality.
(2) will choose the tea seed of picking up and adopt microwave vacuum drying to water content 5-9%, dried tea seed is sent into the peeler shelling, and husking yield except shell, makes the shell-containing rate in the tea seed kernel be lower than 0.5% to the tea seed after the shelling more than 99%.The present invention will choose the tea seed picked up and adopt microwave vacuum drying, and under the protection of vacuum, and drying temperature is not higher than 60 ℃, can effectively reduce oxidation of fatty acids in the tea seed, and the tea seed is dried to water content 5～9%, and dried tea seed is sent into the peeler shelling.If shelling then need refrigerate at-5 ℃～0 ℃ except the tea seed behind the shell can not enter light press for extracting juice step immediately.
(3) will enter cold pressing expeller except the tea seed behind the shell and carry out cold press and obtain tea oil, the oil outlet temperature of cold pressing expeller is lower than 100 ℃, and oil yield is controlled 50～80%.Shelling except advancing to advance low temperature in the cold pressing expeller, is gently pressed the tea seed behind the shell, low pressing temperature, and low oil yield, to guarantee that lipid acid and some nutritive substances are squeezed out, few albumen of trying one's best is dissolved, and reduces acid value and peroxide value as much as possible and raises.As virgin olive oil, keep the light press for extracting juice tea oil of nutrition best in quality the best, the tea cake that Residual oil is higher presses or the lixiviate raw material as two.
(4) tea oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press.The present invention adopts eardrum formula filter, removes albumen and the starch chip that may be taken out of in the pressed oil, with purifying tea oil.
(5) tea oil after will filtering adds slurry tank and carries out sedimentation, feeds pressurization gas, keeps pressure at 0.12～0.14Mpa, and 0 ℃～10 ℃ of temperature kept 1～20 day.The present invention copys the natural subsidence mode and purifies tea oil under the protection of rare gas element, and adopts the mode of pressure boost to shorten process period.
(6) the upper strata tea oil after the sedimentation is derived canned getting product.
Make that thus the present invention is simple, energy consumption is low, quality product is high, effectively avoided environmental pollution, the long time stored Exposure to Sunlight of raw material, high temperature to steam stir-fry, high temperature squeezing and chemical refining process to the infringement of oil quality.
As preferably, in step of the present invention (1) and the step (2), from the process that the harvesting of tea seed begins to carry out microwave drying to the tea seed, need in 24 hours, finish.
As preferably, the shell-containing rate of tea seed kernel is lower than 0.1% in the step of the present invention (2).Make the present invention avoid tea seed shell to sneak into squeezing machine as much as possible thus, make that benzopyrene dissolves in the tea oil in the shell.
As preferably, the oil yield of cold press is between 60～70% in the step of the present invention (3).Make cold pressing process of the present invention can obtain good technological effect thus, particularly under the condition of this temperature and oil yield, oily physics, chemistry and the nutritive index of squeezing out are all relatively good.
As preferably, the pressurization gas in the step of the present invention (5) is nitrogen or carbonic acid gas.The present invention preferably uses the high and cheap nitrogen of purity.
As preferably, the pressure in the step of the present invention (5) remains on 0.12～0.13Mpa, and temperature remains on 2 ℃～8 ℃, and the hold-time is 5～10 days.Make the present invention come purifying tea oil by the mode of natural imitation sedimentation thus, increased protection of inert gas again, prevent the increase of peroxide value in this process; pass through low temperature mode; the auxiliary effect that produces the winterization crystallization by pattern of pressure, shortens the process-cycle again.
As preferably, the tea seed in the step of the present invention (1) is camellia seed or tea-seed.The present invention is suitable for tea seed oil and camellia seed oil processing also are fit to as nuts and kernels woody oleiferous plants crops such as Chinese torreya, walnut, Semen Caryae Cathayensis, apocarya, pine nut, fibert, astral oil rattan, Wood of Shinyleaf Yellowhorn.
As preferably, adopt selection by winnowing except the mode of shell the tea seed after shelling to be removed shell in the step of the present invention (2).The present invention adopts shelling to add the mode of selection by winnowing to dried tea seed, further reduces the shell content in the tea seed kernel, has effectively prevented the stripping of benzo (a) pyrene in tea seed shell and the tea Pu, reduces oil product.
As preferably, the pressurization gas in the step of the present invention (5) is rare gas element.
As preferably, rare gas element of the present invention is helium.
The present invention compared with prior art has the following advantages and effect: the pretreatment time after pluck by control (1), and pluck the back and in 24 hours, finish preprocessing process, prevented that effectively oxidation of fatty acids is rotten in the tea seed.
(2) by adopting the mode of vacuum microwave drying, under the state of low temperature and condition of high vacuum degree, carry out tea seed drying, namely the oscillation action by microwave destroys the combination of lipid acid and albumen in the tea seed kernel, promote separating out of glycerin fatty acid ester, oil yield when improving cold press, and under lesser temps and vacuum state, reduce acid value raising and the increase of peroxidation product that high temperature and oxygen cause, reduce the difficulty of subsequent machining technology.
Dry materials among the present invention is to water ratio 5～9%, and the one, the aqueous vapor evaporation can reduce pressing temperature in the expressing process, and the 2nd, the moisture that contains and phospholipids incorporate reduce the dissolvings of impurity in oil such as phosphatide.
(3) by the low temperature virgin process, control lower pressing temperature and lower first expressed oil rate, both avoided the high temperature squeezing to cause the raising of acid value, peroxide value and multiring aromatic hydrocarbon substance, prevented again that high oil recovery from causing the increase of free fatty acids and the destruction of nutritive substance.
(4) by the mode of low temperature rare gas element supercharging, the technology of imitating traditional natural subsidence purifying tea oil has been protected tea oil again in settling process; prevent that oxygen from causing Fatty Acid Oxidation in the tea oil; and by low temperature and pressing mode, effectively improved effect of settling, shortened the settling time.
Embodiment
The present invention is described in further detail below by embodiment, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment 1.
The green light tea oil working method of pressing may further comprise the steps in the present embodiment.
(1) chooses ripe tea seed raw material, in 24 hours, be transported to processing stand, and will go mouldy and the rejecting of flat seed.
(2) will choose the tea seed of picking up and adopt microwave vacuum drying; microwave frequency can adopt industrial drying machine standard frequency 2450MHz; under the protection of vacuum; and drying temperature is not higher than 60 ℃; the tea seed is dried to water content 5～9%, and dried tea seed is sent into the peeler shelling, and husking yield is more than 99%; tea seed after the shelling adopts selection by winnowing except shell, makes that shell-containing rate is lower than 0.5% in the tea seed kernel.Microwave vacuum drying temperature of the present invention generally is not higher than 60 ℃, it for example can be 40 ℃, 45 ℃, 50 ℃ or 55 ℃, vacuum tightness is according to the difference of drying temperature, be generally 7.4Kpa, 9.6Kpa, 12.3Kpa or 15.8Kpa, generally be dried to water ratio 5～9%, after drying, shelling and the selection by winnowing, husking yield reaches more than 99.5%, tea seed shell-containing rate can be 0.4%, 0.3%, 0.2% or 0.1%, preferably in 0.1%.
Tea seed after the shelling selection by winnowing if can not enter follow-up light press for extracting juice technology timely, then need raise with peroxide value and the acid value that prevents raw material-5 ℃～0 ℃ refrigeration.
(3) the tea seed that will shell after the selection by winnowing advances to carry out low temperature in the cold pressing expeller gently to press, and oil outlet temperature is lower than 100 ℃, and oil yield is controlled 50～80%; Oil outlet temperature can be arbitrary value of 60 ℃～100 ℃, and light expressed oil rate is generally 50～80%, preferably in 60～70% scopes.The light expressed oil rate of 60～70% scopes, can guarantee that lipid acid and some nutritive substances are squeezed out, few albumen of trying one's best is dissolved, reducing acid value and peroxide value as much as possible raises, moisture content in the tea seed can play the effect that reduces pressing temperature, can also be combined with water-soluble substanceses such as phosphatide, avoid being squeezed out with glycerin fatty acid ester.
By alap pressing temperature and lower oil yield, to keep the best and light press for extracting juice tea oil the best in quality of nutrition, the tea cake that Residual oil is higher presses or the lixiviate raw material as two.
(4) tea oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press, adopts eardrum formula filter, removes albumen, starch chip and other solid particulate that may be taken out of in the pressed oil, with purifying tea oil.
(5) tea oil after will filtering adds slurry tank and carries out sedimentation, feeds pressurization gas, keeps pressure at 0.12～0.14Mpa, and 0 ℃～10 ℃ of temperature kept 1～20 day.This step can adopt nitrogen or helium or carbonic acid gas etc. as pressurization gas, generally adopts cheap nitrogen as pressurization gas, has both played supercharging, can play a protective role again.Settling temperature is generally between 0 ℃～10 ℃, preferably in 2 ℃～8 ℃ scopes, as can being 2 ℃, 3 ℃, 4 ℃, 5 ℃, 6 ℃, 7 ℃, 8 ℃, settling time is 1～20 day, be preferably 5～10 days, according to the raw material difference, as being the non-integer sky in 5 days, 6 days, 7 days, 8 days, 9 days, 10 days or the scope.
(6) the upper strata tea oil after the sedimentation is derived the canned light tea oil finished product that presses of green that is.
Tea oil green processing method is suitable for tea seed oil, camellia seed oil processing among the present invention, also is fit to as nuts and kernels woody oleiferous plants crops such as Chinese torreya, walnut, Semen Caryae Cathayensis, apocarya, pine nut, fibert, astral oil rattan, Wood of Shinyleaf Yellowhorn.
Embodiment 2.
The green light tea oil working method of pressing may further comprise the steps in the present embodiment.
(1) plucks ripe camellia seed 10000kg in the base, in 24 hours, be transported to machining location, and finish the process of picking up of choosing, reject flat seed and the mould seed that degenerates.
(2) will choose the camellia seed of picking up is delivered in the microwave vacuum dryer, under the vacuum condition of 2450MHz frequency, 12.3Kpa, 50 ℃ drying temperature, the camellia seed is dried to water ratio 6%, dried camellia seed is delivered into peeler to shell, camellia benevolence after the shelling is carried out selection by winnowing again, the about 1200kg of mountain tea seed kernel through after the selection by winnowing wherein, contains the shell amount and is less than 1kg.
(3) will shell and selection by winnowing after the mountain tea seed kernel deliver into cold pressing expeller and gently press, oil outlet temperature is lower than 95 ℃, oil yield control 70%, acquisition 400kg camellia seed oil.
(4) camellia seed oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press.
(5) tea oil after will filtering adds slurry tank and carries out sedimentation, feeds nitrogen, keeps pressure at 0.12Mpa, and 2 ℃ of temperature kept 10 days.
(6) the upper strata tea oil after the sedimentation is derived, get the 380kg Camellia oil, the green light Camellia oil finished product that presses of canned acquisition.
Embodiment 3.
The green light tea oil working method of pressing may further comprise the steps in the present embodiment.
(1) plucks ripe tea-seed 1000kg in the tea place, in 12 hours, be transported to machining location, and finish the process of picking up of choosing, reject flat seed and the mould seed that degenerates.
(2) will choose the tea-seed of picking up is delivered in the microwave vacuum dryer, under the vacuum condition of 2450MHz frequency, 9.6Kpa, 45 ℃ drying temperature, tea-seed is dried to water ratio 8%, dried camellia seed is delivered into peeler, camellia benevolence after the shelling is passed through the selection by winnowing step again, the about 240kg of tea-seed benevolence through after the selection by winnowing wherein, contains the shell amount and is less than 0.2kg.
The tea-seed benevolence of shelling after the selection by winnowing sent in the refrigerator chamber refrigerate, refrigerating temperature-2 ℃ waits for that other regional tea-seed pre-treatment well enters subsequent processing together and processes, and reaches 1000kg and carries out postorder processing.
(3) the 1000kg tea-seed benevolence after will refrigerating delivers into cold pressing expeller and gently presses, 85 ℃ of oil outlet temperatures, and oil yield 65% obtains the 200kg tea seed oil.
(4) tea seed oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press.
(5) tea seed oil after will filtering adds slurry tank and carries out sedimentation, feeds nitrogen, keeps pressure at 0.125Mpa, and 5 ℃ of temperature kept 7.5 days.
(6) the upper strata tea oil after the sedimentation is derived, get the 190kg tea seed oil, the green light tea seed oil finished product that presses of canned acquisition.
Embodiment 4.
Green light press for extracting juice tea oil working method is that the step that this green is gently pressed astral oil rattan nut oil is as follows for the production of other woody seed kernel oil of astral oil rattan kernel wet goods in the present embodiment.
(1) plucks ripe astral oil rattan fruit 10000kg, in 12 hours, be transported to machining location, and finish the process of picking up of choosing, reject flat seed and the mould fruit that degenerates.
(2) will choose the astral oil rattan of picking up really is delivered in the microwave vacuum dryer, under the vacuum condition of 2450MHz frequency, 9.6Kpa, 45 ℃ drying temperature, tea-seed is dried to water ratio 7%, dried astral oil rattan really is delivered into special use takes off Pu and peeler, the astral oil rattan fruit that takes off after Pu shells passes through the selection by winnowing step again, the about 1500kg of astral oil rattan kernel through after the selection by winnowing wherein, contains the shell amount and is less than 1kg.
(3) will shell 1500kg astral oil rattan kernel after the selection by winnowing delivers into cold pressing expeller and gently presses, 75 ℃ of oil outlet temperatures, and oil yield 65% obtains 280kg astral oil rattan oil.
(4) the astral oil rattan oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press.
(5) oil of the astral oil rattan after will filtering adds slurry tank, feeds nitrogen, keeps pressure at 0.13Mpa, and 6 ℃ of temperature kept 5.5 days.
(6) the upper strata astral oil rattan oil after the sedimentation is derived, get 250kg astral oil rattan oil, the green light astral oil rattan oil finished product that presses of canned acquisition.
Embodiment 5.
The green light tea oil working method of pressing in the present embodiment may further comprise the steps.
(1) choose and pluck ripe tea seed, choose to pick up to reject and go mouldy and flat tea seed, this step was finished in 24 hours.
(2) will choose the tea seed of picking up and adopt microwave vacuum drying to water content 5%, dried tea seed is sent into the peeler shelling, and husking yield except shell, makes the shell-containing rate in the tea seed kernel be lower than 0.5% to the tea seed after the shelling more than 99%.
(3) will enter cold pressing expeller except the tea seed behind the shell and carry out cold press and obtain tea oil, the oil outlet temperature of cold pressing expeller is lower than 100 ℃, and oil yield is controlled 50%.
(4) tea oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press.
(5) tea oil after will filtering adds slurry tank and carries out sedimentation, feeds pressurization gas, keeps pressure at 0.12Mpa, and 0 ℃ of temperature kept 20 days.
(6) the upper strata tea oil after the sedimentation is derived canned getting product.
Embodiment 6.
The green light tea oil working method of pressing in the present embodiment may further comprise the steps.
(1) choose and pluck ripe tea seed, choose to pick up to reject and go mouldy and flat tea seed, this step was finished in 24 hours.The tea seed can be camellia seed or tea-seed, also can adopt as nuts and kernels woody oleiferous plants crops such as Chinese torreya, walnut, Semen Caryae Cathayensis, apocarya, pine nut, fibert, astral oil rattan, Wood of Shinyleaf Yellowhorn to replace the tea seed, i.e. the present invention also is fit to nuts and kernels woody oleiferous plants crops such as Chinese torreya, walnut, Semen Caryae Cathayensis, apocarya, pine nut, fibert, astral oil rattan, Wood of Shinyleaf Yellowhorn are squeezed oil expression.
(2) will choose the tea seed of picking up and adopt microwave vacuum drying to water content 9%, dried tea seed is sent into the peeler shelling, and husking yield except shell, makes the shell-containing rate in the tea seed kernel be lower than 0.5% to the tea seed after the shelling more than 99%.The shell-containing rate of tea seed kernel preferably is lower than 0.1% among the present invention, and the mode that preferably adopts selection by winnowing to remove shell is removed shell to the tea seed after shelling.In step of the present invention (1) and the step (2), from the process that the harvesting of tea seed begins to carry out microwave drying to the tea seed, preferably in 24 hours, finish.
(3) will enter cold pressing expeller except the tea seed behind the shell and carry out cold press and obtain tea oil, the oil outlet temperature of cold pressing expeller is lower than 100 ℃, and oil yield is controlled 80%.The oil yield of cold press is preferably between 60～70% among the present invention.
(4) tea oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press.
(5) tea oil after will filtering adds slurry tank and carries out sedimentation, feeds pressurization gas, keeps pressure at 0.14Mpa, and 10 ℃ of temperature kept 1 day.Pressurization gas among the present invention is preferably nitrogen or carbonic acid gas, and pressure preferably remains on 0.12～0.13Mpa, and temperature preferably remains on 2 ℃～8 ℃, and the hold-time is preferably 5～10 days.Certainly, pressurization gas also can be rare gas element, as helium.
(6) the upper strata tea oil after the sedimentation is derived canned getting product.
The weight that said oil yield refers to squeeze fuel-displaced (glycerin fatty acid ester) among the present invention accounts for the per-cent of raw material kind oil that benevolence contains (glycerin fatty acid ester) weight, and the percentage composition that occurs among the present invention is weight percentage." green " in the title of the present invention refers to that the whole course of processing do not have high temperature (all process temperatures all are lower than 100 ℃), do not have any chemical additive (whole squeezing refining process does not add phosphatide, sodium hydroxide etc.); " the light press for extracting juice " refers to only 60～70% squeezings of institute's oil-containing in the raw material kind benevolence be come out into improving quality and the class of product, and the oil of residue 30～40% also remains in kind of the benevolence squeezing dregs of rice, and the kind benevolence squeezing dregs of rice that Residual oil is high can be used as twice pressing or lixiviate raw material.
Though the present invention with embodiment openly as above; but it is not in order to limit protection scope of the present invention; any technician who is familiar with this technology not breaking away from change and the retouching of doing in the spirit and scope of the present invention, all should belong to protection scope of the present invention.
Claims (10)
1. a green is gently pressed the tea oil working method, it is characterized in that: may further comprise the steps:
(1) choose and pluck ripe tea seed, choose to pick up to reject and go mouldy and flat tea seed, this step was finished in 24 hours;
(2) will choose the tea seed of picking up and adopt microwave vacuum drying to water content 5-9%, dried tea seed is sent into the peeler shelling, and husking yield except shell, makes the shell-containing rate in the tea seed kernel be lower than 0.5% to the tea seed after the shelling more than 99%;
(3) will enter cold pressing expeller except the tea seed behind the shell and carry out cold press and obtain tea oil, the oil outlet temperature of cold pressing expeller is lower than 100 ℃, and oil yield is controlled 50～80%;
(4) tea oil that squeezes out is removed solid impurity by eardrum formula plate-and-frame filter press;
(5) tea oil after will filtering adds slurry tank and carries out sedimentation, feeds pressurization gas, keeps pressure at 0.12～0.14Mpa, and 0 ℃～10 ℃ of temperature kept 1～20 day;
(6) the upper strata tea oil after the sedimentation is derived canned getting product.
2. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: in described step (1) and the step (2), from the process that the harvesting of tea seed begins to carry out microwave drying to the tea seed, need finish in 24 hours.
3. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: the shell-containing rate of tea seed kernel is lower than 0.1% in the described step (2).
4. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: the oil yield of cold press is between 60～70% in the described step (3).
5. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: the pressurization gas in the described step (5) is nitrogen or carbonic acid gas.
6. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: the pressure in the described step (5) remains on 0.12～0.13Mpa, and temperature remains on 2 ℃～8 ℃, and the hold-time is 5～10 days.
7. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: the tea seed in the described step (1) is camellia seed or tea-seed.
8. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: adopt selection by winnowing except the mode of shell the tea seed after shelling to be removed shell in the described step (2).
9. green according to claim 1 is gently pressed the tea oil working method, it is characterized in that: the pressurization gas in the described step (5) is rare gas element.
10. green according to claim 9 is gently pressed the tea oil working method, it is characterized in that: described rare gas element is helium.
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| CN201310194461.2A CN103254991B (en) | 2013-05-23 | 2013-05-23 | Green processing method of virgin tea oil |
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| CN201310194461.2A CN103254991B (en) | 2013-05-23 | 2013-05-23 | Green processing method of virgin tea oil |
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| CN103725408A (en) * | 2013-12-31 | 2014-04-16 | 贵州省黎平县侗乡米业有限公司 | Processing technology of camellia oil |
| CN103756778A (en) * | 2014-01-03 | 2014-04-30 | 李文华 | Tea seed oil material applicable to household oil press and preparation method thereof |
| CN104450168A (en) * | 2014-11-21 | 2015-03-25 | 广东瑞恒农林科技发展有限公司 | Low-temperature pressing and physical refining method of camellia-seed oil |
| CN104560370A (en) * | 2013-10-17 | 2015-04-29 | 江西赣岭茶油开发有限公司 | Preparation method of original ecological tea seed oil |
| CN104830519A (en) * | 2015-04-29 | 2015-08-12 | 广西明华晟粮油科技有限公司 | Oil pressing technology of wild Bama tea seed oil |
| CN105602719A (en) * | 2016-03-14 | 2016-05-25 | 广州绿和缘生物科技有限公司 | Supercritical extraction method of tea oil |
| CN105754711A (en) * | 2016-04-25 | 2016-07-13 | 漳浦县四通食品有限公司 | Tea-seed oil production device and production method thereof |
| CN106190542A (en) * | 2016-08-31 | 2016-12-07 | 贵州石阡佛顶山野生油茶油业有限公司 | A kind of Oleum Camelliae preparation method |
| CN106883928A (en) * | 2017-04-21 | 2017-06-23 | 贵州省贵定县古镇香粮油有限公司 | A kind of processing method of tea seed oil |
| CN107354001A (en) * | 2017-08-28 | 2017-11-17 | 陈治螈 | A kind of processing method for the tea oil that can eat and can prepared food raw |
| CN107932958A (en) * | 2017-12-29 | 2018-04-20 | 洛阳理工学院 | The Oil press and method of a kind of tea seed |
| CN110194988A (en) * | 2019-06-18 | 2019-09-03 | 桂阳县天能生态农业发展有限公司 | A kind of processing technology of tea oil |
| CN111471513A (en) * | 2020-04-13 | 2020-07-31 | 湖南润农生态茶油有限公司 | Low-temperature physical cold pressing method for preparing tea oil |
| CN112080340A (en) * | 2020-09-18 | 2020-12-15 | 湖南新金浩茶油股份有限公司 | Tea oil with rich flavor and preparation method thereof |
| CN112111323A (en) * | 2020-08-20 | 2020-12-22 | 荣鼎(广东)生物科技有限公司 | Method for extracting plukenetia volubilis linneo oil |
| CN113881520A (en) * | 2021-09-29 | 2022-01-04 | 贵州省林业科学研究院 | Processing method of green and efficient camellia oleifera washing powder |
| CN114350434A (en) * | 2022-01-19 | 2022-04-15 | 新疆农垦科学院 | Method for pressing rapeseed oil by pressure difference flash evaporation assistance |
| CN116083157A (en) * | 2022-12-08 | 2023-05-09 | 贵州省林业科学研究院 | Processing method of eutrophic high-quality camellia seed oil |
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