CN116814329A - Process for preparing oil by squeezing tea seeds - Google Patents
Process for preparing oil by squeezing tea seeds Download PDFInfo
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- CN116814329A CN116814329A CN202310901835.3A CN202310901835A CN116814329A CN 116814329 A CN116814329 A CN 116814329A CN 202310901835 A CN202310901835 A CN 202310901835A CN 116814329 A CN116814329 A CN 116814329A
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- 241001122767 Theaceae Species 0.000 title claims abstract description 69
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000001914 filtration Methods 0.000 claims abstract description 38
- 239000012535 impurity Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000007670 refining Methods 0.000 claims abstract description 6
- 230000003203 everyday effect Effects 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000005086 pumping Methods 0.000 claims abstract description 5
- 238000012216 screening Methods 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 108
- 235000019198 oils Nutrition 0.000 claims description 108
- 239000010495 camellia oil Substances 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 24
- 238000000227 grinding Methods 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 240000001548 Camellia japonica Species 0.000 description 7
- 235000018597 common camellia Nutrition 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003925 fat Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 238000009264 composting Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 235000019197 fats Nutrition 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 description 3
- 240000002791 Brassica napus Species 0.000 description 2
- 235000011293 Brassica napus Nutrition 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 2
- 235000019484 Rapeseed oil Nutrition 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004006 olive oil Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008158 vegetable oil Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 235000009024 Ceanothus sanguineus Nutrition 0.000 description 1
- 235000005295 Elaeagnus orientalis Nutrition 0.000 description 1
- 244000223021 Elaeagnus orientalis Species 0.000 description 1
- 240000003553 Leptospermum scoparium Species 0.000 description 1
- 235000015459 Lycium barbarum Nutrition 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 208000034189 Sclerosis Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 235000012000 cholesterol Nutrition 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 239000012053 oil suspension Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 235000019871 vegetable fat Nutrition 0.000 description 1
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
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
-
- 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
- C11B3/001—Refining fats or fatty oils by a combination of two or more of the means hereafter
-
- 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
- C11B3/008—Refining fats or fatty oils by filtration, e.g. including ultra filtration, dialysis
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Mechanical Engineering (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a process for preparing oil by squeezing tea seeds, which comprises the following steps: selecting materials: cleaning impurities of tea seeds, screening the tea seeds which are full in particles and free of worm eyes, and shelling the tea seeds by a sheller to obtain tea seed kernels for standby; and (II) airing: placing the picked tea seeds in an indoor stack for retting, and turning over for 1 time every day; and (III) baking: baking the tea seed kernels in an oven, wherein the baking is carried out for 2 times, the baking time is different each time, the baking temperature is different, and finally the moisture of the tea seed kernels is reduced to 2% -5%; and (IV) squeezing: delivering the dried raw materials into an oil press to press and extract oil, wherein the pressing temperature is 15-25 ℃, the pressing temperature is 40-50 ℃, and then, a screen is adopted for primary filtration; and (V) oil residue separation: and (3) separating oil residues from the obtained impurity oil by a centrifugal method, pumping the separated oil into a filter by an oil pump for secondary filtration, and refining after filtration.
Description
Technical Field
The invention relates to the technical field of tea seed oil production, in particular to a process for producing oil by squeezing tea seeds.
Background
Among vegetable oils and fats, tea seed oil, also called camellia oil, has the highest oleic acid content specific for reducing cholesterol in blood. The tea seed oil is dry and cool and is effective when used for preparing fried foods, the tea seed oil has the effect that the tea oil is woody oil special for China, has fatty acid composition similar to the best known vegetable oil, namely olive oil in the world, has American term of Oriental olive oil, contains various functional components, has obvious effects of preventing cardiovascular sclerosis, reducing blood pressure, reducing blood fat and the like after being eaten for a long time, and has special effects of preventing and resisting cancers;
in the manufacturing process of the tea seed oil, the conventional process is squeezing, the tea seed oil is taken from the seeds of the tea tree, the manufacturing process of the tea seed oil can be divided into oil pressing, filtering and oil refining to obtain finished tea seed oil, however, the traditional processing method not only adds more additives and is not green enough, but also generates a large amount of slag when the selected tea seed oil is cold-squeezed, thus influencing the oil yield and purity, causing low oil pressing oil yield of the tea seed, more suspended matters/sediment in the tea seed oil and different oil products, and being unfavorable for improving the market competitiveness;
therefore, we propose a process for preparing oil from pressed tea seeds, so as to solve the problems that the suspension/sediment is more and the oil quality is different, which is not beneficial to improving the competitive power of the market.
Disclosure of Invention
The invention aims to provide a process for preparing oil by squeezing tea seeds, so as to solve the problems that the prior rapeseed oil suspension/sediment is more and the oil quality is different in the market, which are presented in the above description, and are not beneficial to improving the market competitiveness.
In order to achieve the above purpose, the present invention provides the following technical solutions: a process for preparing oil from pressed tea seeds comprises the following steps:
selecting materials: cleaning impurities of tea seeds, screening the tea seeds which are full in particles and free of worm eyes, and shelling the tea seeds by a sheller to obtain tea seed kernels for standby;
and (II) airing: placing the picked tea seeds in an indoor stack for retting, and turning over for 1 time every day;
and (III) baking: baking the tea seed kernels in an oven, wherein the baking is carried out for 2 times, the baking time is different each time, the baking temperature is different, and finally the moisture of the tea seed kernels is reduced to 2% -5%;
and (IV) squeezing: delivering the dried raw materials into an oil press to press and extract oil, wherein the pressing temperature is 15 ℃ to the upper part
The squeezing temperature is between 40 and 50 ℃ at 25 ℃, and then a screen is adopted for primary filtration;
and (V) oil residue separation: separating oil from residue by centrifuging, pumping the separated oil into a filter by an oil pump, filtering for the second time, and refining after filtering;
and (six) removing impurities: separating the precipitated tea oil, and removing impurities at the bottom to obtain semi-finished oil at the upper part;
and (seventh) filtering and purifying: filtering and purifying the oil body obtained after impurity removal and filtration, and rapidly stirring the oil body under the conditions that the oil temperature is 50-60 ℃ and the vacuum degree is 90-100 kPa, and then, passing the oil body through a separation sieve to obtain the finished oil tea seed oil product.
Preferably, in the step (one), during the impurity cleaning process, the pore diameter is selected to be 4.2mm×
A screen mesh with 15mm, the diameter of the screen surface is controlled to be 2.4-4.6 cm.
Preferably, in the step (II), the picked tea seeds are placed in a room at 15-25 ℃ for composting for 5-6 days, and turned 1-2 times per day.
Preferably, in the step (III), the tea seed kernels are put into an oven for baking, and the baking temperature is set to be 55-85 ℃ and the baking time is set to be 20-40 minutes; then the baking temperature is adjusted to 155-185 ℃, and the baking treatment is carried out for 6-10 minutes, so that the moisture of the tea seed kernels is reduced to 2% -5%.
Preferably, the oil pressing process of the oil press in the step (four) is realized by a grinding wheel mill, the grinding wheel mill is positioned in a closed cavity in the raw material grinding process, the whole closed cavity is arranged in a cooling water tank during operation, the top of the closed cavity is outwards provided with a long cavity for connecting an external power with a grinding wheel mill rotating shaft and a feeding pipe for feeding raw materials, the bottom of the closed cavity is also provided with a discharging pipe, and tea fat slurry is obtained from the discharging pipe.
Preferably, the impurities separated in the step (five) may be subjected to secondary pressing.
Preferably, in the step (six), the tea oil is filtered by a filter screen and medical stone to adsorb impurities, and then the product oil is obtained.
Preferably, in the step (seventh), cooling is required, the temperature of water in the cooling tank is 50-70 ℃, and a water circulation system is connected to the outside of the cooling tank.
Compared with the prior art, the invention has the beneficial effects that: according to the oil preparation process of the pressed tea seeds, the quality of the rapeseed oil is better through a series of operations such as filtration, impurity removal and the like;
(1) According to the invention, the fruits collected from the rapeseeds are piled and retted in a room, so that the tea seeds have the after-ripening function, the oil content is increased, the rapeseeds are dried for many times, organic matters such as starch, soluble sugar and the like can be fully converted into grease, the dried oil tea seeds are stored in a ventilated and dried place, when the oil content of the tea seeds reaches the highest after storage, the oil yield is high, the oil quality is good, the function of fully utilizing the raw materials is achieved, no chemical auxiliary agent is added in the processing process, the process is more environment-friendly, the low temperature and the low pressure are realized in the grinding process, and the aromatic substances and the functional nutrition components in the sesame oil cannot be destroyed;
(2) In the invention, during the filtering and purifying step, the filter rod is used for stirring, filtering suspended matters and other magazines in the oil body, and the oil residue separating step is combined, so that the prepared oil body of the oil tea seed oil has few impurities, no sediment and suspended matters and transparent oil body, thereby improving the quality of the oil tea seed oil and being beneficial to improving the market competitive advantage of the oil tea seed oil.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
selecting materials: cleaning impurities of tea seeds, screening the tea seeds which are full in particles and free of worm eyes, and shelling the tea seeds by a sheller to obtain tea seed kernels for standby;
and (II) airing: placing the picked tea seeds in an indoor stack for retting, and turning over for 1 time every day;
and (III) baking: baking the tea seed kernels in an oven, wherein the baking is carried out for 2 times, the baking time is different each time, the baking temperature is different, and finally the moisture of the tea seed kernels is reduced to 2% -5%;
and (IV) squeezing: delivering the dried raw materials into an oil press to press and extract oil, wherein the pressing temperature is 15-25 ℃, the pressing temperature is 40-50 ℃, and then, a screen is adopted for primary filtration;
and (V) oil residue separation: separating oil from residue by centrifuging, pumping the separated oil into a filter by an oil pump, filtering for the second time, and refining after filtering;
and (six) removing impurities: separating the precipitated tea oil, and removing impurities at the bottom to obtain semi-finished oil at the upper part;
and (seventh) filtering and purifying: filtering and purifying the oil body obtained after impurity removal and filtration, and rapidly stirring the oil body under the conditions that the oil temperature is 50-60 ℃ and the vacuum degree is 90-100 kPa, and then, passing the oil body through a separation sieve to obtain the finished oil tea seed oil product.
In the first step, 100kg of camellia seeds are selected, impurities are cleaned from the camellia seeds, the camellia seeds which are full in particles and free of insect eyes are screened, and in the impurity cleaning process, a screen with the aperture of 5mm multiplied by 10mm is selected, so that impurities with large size can be conveniently screened out.
In the step (III), the picked tea seeds are placed in a room at 15 ℃ for composting for 5 days, turned over 1 time a day, added with oil content, and dried for many times, so that organic matters such as starch, soluble sugar and the like can be fully converted into grease.
In the step (V), crude oil after primary filtration flows into an oil storage tank through an oil scraper to carry out primary oil-residue separation, and the separated oil is pumped into a blade filter by a pressure pump to carry out secondary filtration, and is refined after filtration.
In the step (six), the impurities with large volume can be filtered by a filter screen.
In the step (seventh), the rotation speed of the filter rod stirring oil body can be controlled
At 250r/min, stirring was continued for 30min, and the temperature of the oil body was controlled at 48℃during stirring.
Embodiment two:
selecting materials: cleaning impurities of tea seeds, screening the tea seeds which are full in particles and free of worm eyes, and shelling the tea seeds by a sheller to obtain tea seed kernels for standby;
and (II) airing: placing the picked tea seeds in an indoor stack for retting, and turning over for 1 time every day;
and (III) baking: baking the tea seed kernels in an oven, wherein the baking is carried out for 2 times, the baking time is different each time, the baking temperature is different, and finally the moisture of the tea seed kernels is reduced to 2% -5%;
and (IV) squeezing: delivering the dried raw materials into an oil press to press and extract oil, wherein the pressing temperature is 15 ℃ to the upper part
The squeezing temperature is between 40 and 50 ℃ at 25 ℃, and then a screen is adopted for primary filtration;
and (V) oil residue separation: separating oil from residue by centrifuging, pumping the separated oil into a filter by an oil pump, filtering for the second time, and refining after filtering;
and (six) removing impurities: separating the precipitated tea oil, and removing impurities at the bottom to obtain semi-finished oil at the upper part;
and (seventh) filtering and purifying: filtering and purifying the oil body obtained after impurity removal and filtration, and rapidly stirring the oil body under the conditions that the oil temperature is 50-60 ℃ and the vacuum degree is 90-100 kPa, and then, passing the oil body through a separation sieve to obtain the finished oil tea seed oil product.
In the first step, 100kg of camellia seeds are selected, impurities are cleaned from the camellia seeds, the camellia seeds which are full in particles and free of insect eyes are screened, and in the impurity cleaning process, a screen with the aperture of 2mm multiplied by 5mm is selected, so that impurities with small size can be conveniently screened out.
In the step (III), picked tea seeds are placed in a room at 20 ℃ for composting for 6 days, the tea seeds which are well sun-dried are turned over 2 times a day and are placed in a ventilated and dried place for collection, and when the oil content of the tea seeds reaches the highest after storage, the tea seeds are sun-dried again for 1-2 days, so that the oil yield is high, the oil quality is good, and the effect of fully utilizing raw materials is achieved.
And (V) filtering and purifying the oil body obtained after the secondary filtering, rapidly stirring the oil body through a filter rod under the conditions that the oil temperature is 65 ℃ and the vacuum degree is 100kPa, and then passing the oil body through a separating screen to obtain the finished product of the camellia seed oil.
In the step (six), the medical stone is used for filtering, so that the impurities with small volume can be filtered out, and the quality of the oil is better.
In the step (seventh), the dried raw materials are sent into an oil press for oil extraction, the initial pressing temperature is set to be 15 ℃, the oil extraction temperature is set to be 46 ℃, the oil extraction process of the oil press is realized through a grinding wheel mill, the grinding wheel mill is arranged in a closed cavity in the process of grinding the raw materials, the whole closed cavity is arranged in a cooling water tank during operation, the top of the closed cavity is outwards provided with a long cavity for connecting an external power with a rotating shaft of the grinding wheel mill, a feeding pipe for feeding the raw materials, a discharging pipe is further arranged at the bottom of the closed cavity, tea fat slurry is obtained from the discharging pipe, and the water temperature in the cooling tank is 50 ℃.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The process for preparing the oil by squeezing the tea seeds is characterized by comprising the following steps of:
selecting materials: cleaning impurities of tea seeds, screening the tea seeds which are full in particles and free of worm eyes, and shelling the tea seeds by a sheller to obtain tea seed kernels for standby;
and (II) airing: placing the picked tea seeds in an indoor stack for retting, and turning over for 1 time every day;
and (III) baking: baking the tea seed kernels in an oven, wherein the baking is carried out for 2 times, the baking time is different each time, the baking temperature is different, and finally the moisture of the tea seed kernels is reduced to 2% -5%;
and (IV) squeezing: delivering the dried raw materials into an oil press to press and extract oil, wherein the pressing temperature is 15-25 ℃, the pressing temperature is 40-50 ℃, and then, a screen is adopted for primary filtration;
and (V) oil residue separation: separating oil from residue by centrifuging, pumping the separated oil into a filter by an oil pump, filtering for the second time, and refining after filtering;
and (six) removing impurities: separating the precipitated tea oil, and removing impurities at the bottom to obtain semi-finished oil at the upper part;
and (seventh) filtering and purifying: filtering and purifying the oil body obtained after impurity removal and filtration, and rapidly stirring the oil body under the conditions that the oil temperature is 50-60 ℃ and the vacuum degree is 90-100 kPa, and then, passing the oil body through a separation sieve to obtain the finished oil tea seed oil product.
2. A process for the preparation of oil from pressed tea seeds as defined in claim 1, wherein: in the step (I), in the impurity cleaning process, a screen with the aperture of 2mm-10mm is selected, and the diameter of the screen surface is controlled to be 2.4-4.6 cm.
3. A process for the preparation of oil from pressed tea seeds as defined in claim 1, wherein: and (2) placing the picked tea seeds in the step (II) to be piled and retted in a room at 15-25 ℃ for 5-6 days, and turning 1-2 times per day.
4. A process for the preparation of oil from pressed tea seeds as defined in claim 1, wherein: in the step (III), the tea seed kernels are put into an oven for baking, and the baking temperature is set to be 55-85 ℃ and the baking time is set to be 20-40 minutes; then the baking temperature is adjusted to 155-185 ℃, and the baking treatment is carried out for 6-10 minutes, so that the moisture of the tea seed kernels is reduced to 2% -5%.
5. A process for the preparation of oil from pressed tea seeds as defined in claim 1, wherein: the oil pressing process of the oil press in the step (IV) is realized through a grinding wheel mill, the grinding wheel mill is arranged in a closed cavity in the raw material grinding process, the whole closed cavity is arranged in a cooling water tank during operation, the top of the closed cavity is outwards provided with a long cavity for connecting an external power with a grinding wheel mill rotating shaft and a feeding pipe for feeding raw materials, the bottom of the closed cavity is also provided with a discharging pipe, and tea fat pulp is obtained from the discharging pipe.
6. A process for the preparation of oil from pressed tea seeds as defined in claim 1, wherein: and (3) carrying out secondary squeezing on the impurities separated in the step (five).
7. A process for the preparation of oil from pressed tea seeds as defined in claim 5, wherein: and step six, filtering and adsorbing impurities from the tea oil through a filter screen and medical stone to obtain the product oil.
8. A process for the preparation of oil from pressed tea seeds as defined in claim 5, wherein: in the step (seven), cooling is needed, the water temperature in the cooling tank is 50-70 ℃, and a water circulation system is connected to the outside of the cooling tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901835.3A CN116814329A (en) | 2023-07-21 | 2023-07-21 | Process for preparing oil by squeezing tea seeds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310901835.3A CN116814329A (en) | 2023-07-21 | 2023-07-21 | Process for preparing oil by squeezing tea seeds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116814329A true CN116814329A (en) | 2023-09-29 |
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| CN202310901835.3A Pending CN116814329A (en) | 2023-07-21 | 2023-07-21 | Process for preparing oil by squeezing tea seeds |
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| CN (1) | CN116814329A (en) |
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