CN104804864A - Oil pressing method - Google Patents
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- CN104804864A CN104804864A CN201510172042.8A CN201510172042A CN104804864A CN 104804864 A CN104804864 A CN 104804864A CN 201510172042 A CN201510172042 A CN 201510172042A CN 104804864 A CN104804864 A CN 104804864A
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- 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
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
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- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention provides an oil pressing method. The method comprises steps as follows: a, camellia seeds are dried and dehulled to obtain camellia kernels; b, the camellia kernels are subjected to flaking processing to obtain camellia germs, and the camellia germs are steamed with steam, so that softened camellia germs are obtained; c, the softened camellia germs are subjected to primary pressing and secondary pressing sequentially, and then camellia seed oil is obtained. According to the oil pressing method, the operation is simple and convenient, and the oil yield is high.
Description
Technical field
The present invention relates to edible oil field, in particular to a kind of method of oil expression.
Background technology
Tea-seed oil has another name called Camellia oil, Oleum camelliae, camellia seed oil, tea oil seeds of trees oil.Camellia is the ground special products such as Dabie Mountain of China, Fujian, Jiangxi, can extract the Camellia oil of high-quality, i.e. tea-seed oil in fruit.
Not containing erucic acid, cholesterol, flavacin and other additive in tea-seed oil.In tea-seed oil, unsaturated fatty acids is up to more than 90%, and oleic acid reaches 80-83%, and linolic acid reaches 7-13%, and rich in proteins and vitamin A, B, D, E etc., the abundant linolenic acid especially contained by it is needed by human and can not synthesizes.The oleic acid of tea-seed oil and linoleic acid content all higher than sweet oil, therefore have " east sweet oil " good reputation.Containing several functions composition in tea-seed oil, eat for a long time, there is effects such as significantly preventing cardiovascula arteriosclerosis, hypotensive, reducing blood-fat and the special efficacy of cancer-resisting.
Along with the raising day by day of people's living standard, the selection for edible oil is also more and more paid attention to.The excellent nourishing function of tea-seed oil arouses great concern, and the consumption for tea-seed oil is also advanced by leaps and bounds.
Current production tea-seed oil is the method by squeezing tea seed, mainly comprise two kinds: one is the squeezing of band shell single, benefit is simple and convenient, too much pre-treatment need not be carried out, shortcoming is that oil yield is low, this is the oleaginousness added greatly due to the existence of shell in press residue, and cause oil yield to reduce, the oleaginousness in residue is up to 8%-10%; Another kind is the squeezing of shelling single, advantage is that oil yield is higher relative to the squeezing of band shell, shortcoming is that the tea seed kernel of shelling is due to oil-containing unusual light, frictional force is very little, enters after in expeller, enters to squeeze, fuel-displaced, to go out cake all more difficult, production efficiency is low, although oil yield is high relatively, still there is a lot of oil to stay in residue, waste very large.
Improve the residual oil content in the final oil yield of squeezing process, reduction residue, be the core content that people study all the time, is also one of difficult point of squeezing.The oil length of common tea seed is roughly between 17%-39%, and also some kind oleaginousness is very high.The annual whole world is very large for the consumption of tea-seed oil, and squeezed out by the oil pressure in tea seed, tool has very great significance, and can not only economize on resources, and can also bring great economic benefit as far as possible.
In view of this, special proposition the present invention.
Summary of the invention
The first object of the present invention is a kind of method providing oil expression, described method have oil yield high, can effectively solve into squeezing, fuel-displaced, go out the advantages such as all more difficult problem of cake, production efficiency is high, good in economic efficiency.
In order to realize above-mentioned purpose of the present invention, spy by the following technical solutions:
A method for oil expression, is characterized in that, said method comprising the steps of:
A. dry tea seed, shell the described tea seed after oven dry to obtain tea benevolence;
B. described tea benevolence is carried out rolling embryo process and obtain tea embryo, steam described tea embryo with water vapour and must soften tea embryo;
C. described softening tea embryo is carried out successively obtaining tea-seed oil after pre-squeezing and two is squeezed.
Oven dry effectively can remove the moisture in tea seed, improves Milling Efficiencty and oil yield, ensures the quality of squeezing the tea-seed oil obtained; Shell is sloughed, shell can be avoided in expressing process to absorb grease, effectively avoid the decline of oil yield; Tea benevolence is processed into short grained tea embryo, squeezing difficulty can be reduced, improve oil yield further; The Main Function that water vapour steams tea embryo is softening tea embryo, reduces squeezing difficulty further, improves oil yield; Adopt pre-squeezing and the two squeezing programs of squeezing, can oil yield be improved.
Preferably, the particle diameter of described tea embryo is 1-2 millimeter.
When the particle diameter of tea embryo is 1-2 millimeter, tea embryo frictional force each other can strengthen, and reduces the difficulty into squeezing, the short grained tea embryo of appropriate particle size can improve oil yield simultaneously, the too large oil yield of particle diameter is low, and the too little cost of particle diameter can significantly increase, and too small particle diameter can increase production difficulty.
Further preferably, the temperature of described water vapour is 70-90 DEG C.
Suitable steam temperature is extremely important for softening tea embryo.The nutritive substance that the too high meeting of temperature is offered tea in embryo decomposes destruction, can reduce the quality of tea-seed oil; Temperature is too low, affects production efficiency, does not reach softening object, affects oil yield.In addition, can also play to the effect of tea embryo heating, suitable temperature is conducive to improving Milling Efficiencty, improves oil yield.
Preferably, the water ratio of the described tea seed after oven dry is 4%-8%.
Retain suitable water ratio, be conducive to improving Milling Efficiencty, improve oil yield.Water ratio is too high, is unfavorable for squeezing, significantly can affects oil yield; Water ratio is too low, be unfavorable for squeezing complete after residue become cake, be unfavorable for cake, impact squeezing efficiency.
Preferably, the oil length of tea-seed pancake that described pre-squeezing obtains is 6%-16%.
The degree of pre-squeezing is wanted suitably, the oil length of tea-seed pancake is too high, after two squeezinges, overall oil yield can reduce, if the oil length of tea-seed pancake is too low, screw oil expeller squeezes thorax does not have grease lubrication, just do not have thrust just easy blocking do not go out cake, not fuel-displaced, two squeeze and just do not have due effect, and two to squeeze the tea-seed oil of squeezing out very limited.The oil length controlling the tea-seed pancake after pre-squeezing is 6%-16%, can ensure the effective operation of two squeezinges, finally plays the effect improving oil yield, cut the waste, increase economic efficiency.
Further preferably, described pre-squeezing uses de-cake hydraulic oil press automatically, and the pressure of described de-cake hydraulic oil press is automatically 20-25 MPa, and the pre-squeezing time is 20-30 minute.
Rational pressure and squeezing time, effectively can control the oil length of the tea-seed pancake after pre-squeezing.
More preferably, after described step b, before described step c, also comprise:
Described tea embryo 200-300 object is thickeied the packing of cotton yarn cloth bag.
Directly tea embryo is put in oil press zhai, because tea embryo particle is less, is not easy to control, especially easily splashes, cause wastage of material, and affect Milling Efficiencty greatly.Use 200-300 object to thicken the packing of cotton yarn cloth bag, can effectively control tea embryo, improve the cooperate degree of tea embryo and hydraulic oil press; The cotton yarn cloth bag of suitable order number, controls tea embryo on the one hand and can not overflow from cloth bag under the pressure of hydraulic oil press, can not affect fuel-displaced because yarn gap is too little on the other hand.
Preferably, also comprise between described pre-squeezing and described two are squeezed:
Described tea-seed pancake is ground into the broken cake particle that particle diameter is 4-6mm.
Tea-seed pancake after squeezing in advance is crushed into the particle of suitable particle diameter, is conveniently sent into oil press zhai on the one hand, another aspect is the oil yield in order to improve two squeezinges.
Further preferably, described two squeezinges are specially:
Described broken cake particle is sent into screw oil expeller, obtains described tea-seed oil.
Use screw oil expeller to carry out two squeezinges, squeezing effect is best.
Alternatively, in described step a, also comprise after oven dry, before shelling:
Gas blower is used to promote sieve decon.
Removal impurity is the quality in order to improve obtained tea-seed oil; In addition, also can avoid Impurity Absorption grease, removal of impurities can improve oil yield further.
Compared with prior art, beneficial effect of the present invention is:
(1) Milling Efficiencty high, improve raw material availability, avoid waste, good in economic efficiency;
(2) effectively can solve shelling tea seed kernel is inconvenient to into squeezing, the problem going out cake;
(3) twice squeezing, oil yield is high.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting the scope of the invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturers suggestion is carried out.Agents useful for same or the unreceipted production firm person of instrument, be and can buy by commercially available the conventional products obtained.
Embodiment 1
Get 60kg tea seed, being dried to water ratio is 4%, and then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 1mm, steam tea embryo with 70 DEG C of water vapour and must soften tea embryo in 5 minutes;
Carried out squeezing in advance under peak pressure 25 MPa condition obtaining tea-seed pancake in 20 minutes with automatically taking off cake hydraulic oil press by softening tea embryo, the oil length of tea-seed pancake is 16%;
Tea-seed pancake is ground into the broken cake particle that particle diameter is 4mm, then broken cake particle feeding screw oil expeller is squeezed and within 5 minutes, obtain elementary tea-seed oil (crude oil), then elementary tea-seed oil is carried out refining and obtain finished product tea-seed oil.
Measure the residual oil content of last residue.
Embodiment 2
Get 80kg tea seed, being dried to water ratio is 8%, and then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm, steam tea embryo with 90 DEG C of water vapour and must soften tea embryo in 4 minutes;
Carried out squeezing in advance under peak pressure 20 MPa condition obtaining tea-seed pancake in 30 minutes with automatically taking off cake hydraulic oil press by softening tea embryo, the oil length of tea-seed pancake is 6%;
Tea-seed pancake is ground into the broken cake particle that particle diameter is 6mm, then broken cake particle feeding screw oil expeller is squeezed and obtain elementary tea-seed oil in 10 minutes.
Measure the residual oil content of last residue.
Embodiment 3
Get 70kg tea seed, being dried to water ratio is 5%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm, steam tea embryo with 80 DEG C of water vapour and must soften tea embryo in 4 minutes;
To soften tea embryo 200 objects and thicken the packing of cotton yarn cloth bag, then de-cake hydraulic oil press carries out squeezing in advance obtaining tea-seed pancake in 25 minutes under peak pressure 23 MPa condition automatically, and the oil length of tea-seed pancake is 10%;
Tea-seed pancake is ground into the broken cake particle that particle diameter is 5mm, then broken cake particle feeding screw oil expeller is squeezed and obtain elementary tea-seed oil in 10 minutes.
Measure the residual oil content of last residue.
Embodiment 4
Get 75kg tea seed, being dried to water ratio is 7%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm, steam tea embryo with 85 DEG C of water vapour and must soften tea embryo in 5 minutes;
To soften tea embryo 300 objects and thicken the packing of cotton yarn cloth bag, then de-cake hydraulic oil press carries out squeezing in advance obtaining tea-seed pancake in 28 minutes under peak pressure 21 MPa condition automatically, and the oil length of tea-seed pancake is 15%;
Tea-seed pancake is ground into the broken cake particle that particle diameter is 4mm, then broken cake particle feeding screw oil expeller is squeezed and obtain elementary tea-seed oil in 5 minutes.
Measure the residual oil content of last residue.
Embodiment 5
Get 65kg tea seed, being dried to water ratio is 6%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm, steam tea embryo with 75 DEG C of water vapour and must soften tea embryo in 5 minutes;
To soften tea embryo 250 objects and thicken the packing of cotton yarn cloth bag, then de-cake hydraulic oil press carries out squeezing in advance obtaining tea-seed pancake in 22 minutes under peak pressure 22 MPa condition automatically, and the oil length of tea-seed pancake is 8%;
Tea-seed pancake is ground into the broken cake particle that particle diameter is 5mm, then broken cake particle feeding screw oil expeller is squeezed and obtain elementary tea-seed oil in 8 minutes.
Measure the residual oil content of last residue.
Comparative example 1
Get 70kg tea seed, being dried to water ratio is 5%, uses gas blower to promote sieve decon, and then de-cake hydraulic oil press carries out squeezing and obtains elementary tea-seed oil in 25 minutes under peak pressure 23 MPa condition automatically.
Measure the residual oil content of last residue.
Comparative example 2
Get 70kg tea seed, being dried to water ratio is 5%, uses gas blower to promote sieve decon, and then de-cake hydraulic oil press carries out squeezing and obtains elementary tea-seed oil in 50 minutes under peak pressure 25 MPa condition automatically.
Measure the residual oil content of last residue.
Comparative example 3
Get 70kg tea seed, being dried to water ratio is 5%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence screw oil expeller is squeezed and within 50 minutes, obtains elementary tea-seed oil.
Measure the residual oil content of last residue.
Comparative example 4
Get 70kg tea seed, being dried to water ratio is 5%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence is carried out squeezing with automatic de-cake hydraulic oil press squeezing under peak pressure 23 MPa condition and within 50 minutes, obtains elementary tea-seed oil.
Measure the residual oil content of last residue.
Comparative example 5
Get 70kg tea seed, being dried to water ratio is 5%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm;
Tea embryo 200 objects are thickeied the packing of cotton yarn cloth bag, and then de-cake hydraulic oil press carries out squeezing in advance obtaining tea-seed pancake in 25 minutes under peak pressure 23 MPa condition automatically, and the oil length of tea-seed pancake is 10%;
Tea-seed pancake is ground into the broken cake particle that particle diameter is 5mm, then broken cake particle feeding screw oil expeller is squeezed and obtain elementary tea-seed oil in 10 minutes.
Measure the residual oil content of last residue.
Comparative example 6
Get 70kg tea seed, being dried to water ratio is 5%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm, steam tea embryo with 80 DEG C of water vapour and must soften tea embryo in 4 minutes;
To soften tea embryo 200 objects and thicken the packing of cotton yarn cloth bag, then de-cake hydraulic oil press carries out squeezing in advance obtaining elementary tea-seed oil in 50 minutes under peak pressure 23 MPa condition automatically.
Measure the residual oil content of last residue.
Comparative example 7
Get 70kg tea seed, being dried to water ratio is 5%, and use gas blower to promote sieve decon, then shell to obtain tea benevolence; Tea benevolence flaker is carried out roll embryo process and obtain the tea embryo that particle diameter is 2mm, steam tea embryo with 80 DEG C of water vapour and must soften tea embryo in 4 minutes;
Softening tea embryo feeding screw oil expeller is squeezed and within 20 minutes, obtains elementary tea-seed oil.
Measure the residual oil content of last residue.
The residual oil content of Statistics Implementation example and comparative example, its result is as shown in table 1:
Table 1 residual oil content contrasts
| Label | Residual oil content/% |
| Embodiment 1 | 3.1 |
| Embodiment 2 | 3.5 |
| Embodiment 3 | 1.2 |
| Embodiment 4 | 2.7 |
| Embodiment 5 | 3.0 |
| Comparative example 1 | 11.3 |
| Comparative example 2 | 8.7 |
| Comparative example 3 | 9.4 |
| Comparative example 4 | 7.6 |
| Comparative example 5 | 6.9 |
| Comparative example 6 | 8.2 |
| Comparative example 7 | 8.5 |
From upper table 1, the method that the application provides, residual oil content is very low, squeezes effective.
Comparative example and comparative example 1-4,6-7 known, single squeezing residual oil content very high, squeezing poor effect.
Comparative example 3 and comparative example 5 known, with water vapour steam tea embryo must soften tea embryo step for improving oil yield, to reduce the residual oil content of waste residue extremely important, steaming tea embryo with water vapour significantly can reduce residual oil content.
Comparative example 1 and 2 contrasts discovery, and increasing squeeze pressure and extending the squeezing time is very limited for improving the effect of squeezing effect.
Embodiment 3 and comparative example 6-7 contrast known, and when other conditions are identical, twice pressing significantly can reduce residual oil content relative to single squeezing.
The method of the use tea seed oil expression using the application to provide, simple to operation, oil yield is high, the residual oil content in residue obtained can be reduced to 2% even lower, avoids the waste of raw material, good in economic efficiency.
Although illustrate and describe the present invention with specific embodiment, however it will be appreciated that can to make when not deviating from the spirit and scope of the present invention many other change and amendment.Therefore, this means to comprise all such changes and modifications belonged in the scope of the invention in the following claims.
Claims (10)
1. a method for oil expression, is characterized in that, said method comprising the steps of:
A. dry tea seed, shell the described tea seed after oven dry to obtain tea benevolence;
B. described tea benevolence is carried out rolling embryo process and obtain tea embryo, steam described tea embryo with water vapour and must soften tea embryo;
C. described softening tea embryo is carried out successively obtaining tea-seed oil after pre-squeezing and two is squeezed.
2. method according to claim 1, is characterized in that, the particle diameter of described tea embryo is 1-2 millimeter.
3. method according to claim 2, is characterized in that, the temperature of described water vapour is 70-90 DEG C.
4. method according to claim 1, is characterized in that, the water ratio of the described tea seed after oven dry is 4%-8%.
5. method according to claim 1, is characterized in that, the oil length of the tea-seed pancake that described pre-squeezing obtains is 6%-16%.
6. method according to claim 5, is characterized in that, described pre-squeezing uses de-cake hydraulic oil press automatically, and the pressure of described de-cake hydraulic oil press is automatically 20-25 MPa, and the pre-squeezing time is 20-30 minute.
7. method according to claim 6, is characterized in that, after described step b, before described step c, also comprises:
Described tea embryo 200-300 object is thickeied the packing of cotton yarn cloth bag.
8. method according to claim 1, is characterized in that, also comprises between described pre-squeezing and described two are squeezed:
Described tea-seed pancake is ground into the broken cake particle that particle diameter is 4-6mm.
9. method according to claim 8, is characterized in that, described two squeezinges are specially:
Described broken cake particle is sent into screw oil expeller, obtains described tea-seed oil.
10. the method according to any one of claim 1-9, is characterized in that, in described step a, also comprises after oven dry, before shelling:
Gas blower is used to promote sieve decon.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106118859A (en) * | 2016-08-01 | 2016-11-16 | 华宁昌盛工贸有限公司 | Edible oil processing method |
| CN106701309A (en) * | 2017-03-20 | 2017-05-24 | 于银强 | Peanut oil pressing method |
| CN106800973A (en) * | 2017-03-23 | 2017-06-06 | 陈顶凯 | The method for squeezing corn oil |
| CN106929142A (en) * | 2017-04-02 | 2017-07-07 | 南通博泰美术图案设计有限公司 | The method for squeezing sunflower oil |
| CN106947587A (en) * | 2017-04-02 | 2017-07-14 | 南通博泰美术图案设计有限公司 | The method for squeezing sesame oil |
| CN110903892A (en) * | 2019-12-10 | 2020-03-24 | 国家粮食和物资储备局科学研究院 | Preparation method of camellia seed oil rich in Ve and phytosterol |
| CN112175720A (en) * | 2020-09-30 | 2021-01-05 | 宁波捷通机械有限公司 | Preparation process of camellia oil extract |
| CN113858684A (en) * | 2021-09-29 | 2021-12-31 | 贵州省林业科学研究院 | Safe shutdown method for double-screw oil press after oil tea seeds are squeezed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106118859A (en) * | 2016-08-01 | 2016-11-16 | 华宁昌盛工贸有限公司 | Edible oil processing method |
| CN106701309A (en) * | 2017-03-20 | 2017-05-24 | 于银强 | Peanut oil pressing method |
| CN106800973A (en) * | 2017-03-23 | 2017-06-06 | 陈顶凯 | The method for squeezing corn oil |
| CN106929142A (en) * | 2017-04-02 | 2017-07-07 | 南通博泰美术图案设计有限公司 | The method for squeezing sunflower oil |
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| CN110903892A (en) * | 2019-12-10 | 2020-03-24 | 国家粮食和物资储备局科学研究院 | Preparation method of camellia seed oil rich in Ve and phytosterol |
| CN112175720A (en) * | 2020-09-30 | 2021-01-05 | 宁波捷通机械有限公司 | Preparation process of camellia oil extract |
| CN113858684A (en) * | 2021-09-29 | 2021-12-31 | 贵州省林业科学研究院 | Safe shutdown method for double-screw oil press after oil tea seeds are squeezed |
| CN113858684B (en) * | 2021-09-29 | 2023-10-03 | 贵州省林业科学研究院 | Safe shutdown method for double-screw oil press after oil tea seeds are pressed |
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