CN112226274A - Processing method of organic tea oil - Google Patents
Processing method of organic tea oil Download PDFInfo
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- CN112226274A CN112226274A CN202010902427.6A CN202010902427A CN112226274A CN 112226274 A CN112226274 A CN 112226274A CN 202010902427 A CN202010902427 A CN 202010902427A CN 112226274 A CN112226274 A CN 112226274A
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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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- 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
- 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
Abstract
The invention discloses a processing method of organic tea oil, which specifically comprises the steps of collecting organic raw materials, controlling the moisture content of dried raw materials, purifying the dried raw materials, separating shells and kernels, crushing the raw materials by a crusher after color selection, performing multiple squeezing by a double-screw oil press, degumming, deacidifying, decoloring, deodorizing, dewaxing, refining, and filling finished oil; compared with the first-grade oil tea seed oil sold in the market at present, the organic oil tea seed oil obtained by the method has the advantages of low trans-fatty acid content, high vitamin E, phytosterol and squalene contents, safety, nutrition, health, high nutrient content, no artificial synthetic substances such as pesticides, fertilizers, hormones and the like, and good health-care effect.
Description
Technical Field
The invention relates to the technical field of organic tea oil, and particularly relates to a processing method of organic tea oil.
Background
Organic camellia seed oil is obtained from camellia seeds, camellia is a unique oil tree species in China, China is the origin of camellia and has more than 2300 years of cultivation history, camellia is one of the oldest woody edible plants in China, China is the world with the widest distribution of the camellia plants, and China is the world with the largest production base of the camellia plants, and in addition, only China in southeast Asia, Japan and the like has a very small distribution.
The organic oil tea seed oil is produced and processed according to international organic agricultural production requirements and corresponding standards. Firstly, tea seeds are collected in an organic mode, and the whole production process is realized by strictly following the production, processing, packaging, storage and transportation standards of organic food. The organic food is absolutely forbidden to use artificial synthetic substances such as pesticides, fertilizers, hormones and the like in the production and processing processes, and the organic tea oil is original ecological oil and has very good health care effect on human bodies. The current first-grade camellia seed oil sold in the market has high fatty acid content, low vitamin E, phytosterol and squalene content and low nutrition degree.
Disclosure of Invention
The invention mainly aims to provide a processing method of organic tea oil, which can effectively solve the problems of high fatty acid content, low vitamin E, phytosterol and squalene content and low nutrition degree of the current first-grade oil-tea camellia seed oil sold in the market in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that: a processing method of organic tea oil comprises the following steps:
1) raw material Collection
The raw material adopts camellia seeds of an organic base, and raw materials from a non-organic base and raw materials containing impurities and having deteriorated quality cannot be mixed;
2) drying treatment
Drying the tea oil seeds by a kang or sun, so that the water content of the tea oil seeds is 10% -12%;
3) raw material treatment
Sequentially carrying out air separation and magnetic separation on the camellia seeds dried in the step 2 to obtain pure and lossless camellia seeds, wherein the impurities and dust in the camellia seeds are removed by adopting an electric windmill for air separation; magnetic separation adopts a magnetic separator to remove metal impurities;
4) shelling
Pouring the camellia seeds obtained in the step 3 into a camellia seed husking machine, husking, separating husked shells and kernels through automatic wind power, putting the separated kernels into a temporary storage box, and packaging the separated shells for warehousing;
5) color sorting
Removing color-changing and mildewing seeds of the tea seeds in the temporary storage box in the step 4 by using a color sorter;
6) crushing
Putting the camellia seed kernels subjected to color selection in the step 5 into a crusher, and crushing the camellia seed kernels into 6-8 pieces of particles;
7) squeezing machine
Placing the camellia seed kernel particles crushed in the step 5 into a special twin-screw oil press for camellia seeds to be pressed to prepare crude oil;
8) refining
Filtering the crude oil obtained in the step 6 for the first time, degumming, deacidifying, decolorizing, filtering for the second time, deodorizing, dewaxing, and filtering for the third time to obtain the final product oil, wherein degumming is performed by hydration degumming or phosphoric acid degumming, deacidifying is performed by alkali refining, decolorizing is performed by activated carbon, deodorizing is performed by a vacuum deodorizing tower, dewaxing is performed by crystallization in a low-temperature crystallizing tank,
9) filling
The qualified outlet pressure and flow of the oil storage tank are adjusted to ensure that crystals are not damaged and a good filtering effect is achieved, and filtered oil is pumped into the filling machine to automatically fill and paste the label.
Preferably, the kang drying in the step 2 is to dry the camellia seeds at 45-50 ℃ for 10-15 d, and the camellia seeds are dried in the sun at present, then spread in a ventilated warehouse, stored for 15-20 days and naturally dried.
Preferably, two feeding modes of manual feeding and mechanical conveying are adopted in the step 7, the blank enters a double-screw oil press to be pressed, the pressed crude oil containing the residues is precipitated and fished for the residues through a clarifying oil tank, a blade filter is used for filtering, and the oil residues discharged from the clarifying oil tank and the filter are sent to the oil press to be pressed back.
Preferably, in the step 8, the oil tea crude oil with a low acid value (KOH) of less than 2mg/g is degummed by hydration, and the method specifically comprises the following steps: heating the crude oil after primary filtration to 60-65 ℃, then adding hot water with the temperature 0-5 ℃ higher than that of the crude oil, wherein the hot water amount is 3.5 times of the phospholipid content or 5 percent of the crude oil amount, continuously stirring for 0.5h to degum, standing for 2-4h, draining, cooling the temperature to normal temperature after draining, and removing tea saponin and mechanical impurities in the camellia seed oil, wherein the phospholipid content of the degummed oil is 27.7 mg/kg.
Preferably, in the step 8, the low-acid camellia seed oil is degummed by using phosphoric acid, specifically, 85% of edible-grade phosphoric acid is selected, the adding amount of the edible-grade phosphoric acid is 0.2% of the oil mass, the oil temperature is 60 ℃, the adding amount of the water is 2-3% of the oil mass, the continuous stirring is performed for degumming, the mixture is placed still and then drained, the temperature is reduced to normal temperature after draining, the content of degummed oil phospholipid is 27.7mg/kg, and meanwhile, tea saponin and mechanical impurities in the camellia seed oil are removed;
preferably, the alkali refining deacidification in the step 8 is suitable for high-valence oleic acid crude oil with an acid value (KOH) of less than 2-5mg/g, and the method comprises the following specific steps: NaOH solution with the mass fraction of 3.65-8.07% is selected for alkali refining at normal temperature, alkali liquor is quickly added into crude oil with the super-alkali amount of 0.25%, the stirring speed is 50-60r/min, the mixture is slowly stirred at 30r/min after the alkali is added, the mixture reacts for 20min, the mixture is left to stand for 4h and then drained, the temperature of the oil is raised to 70-80 ℃, the water temperature is 85 ℃, the water addition amount is 8-10% of the oil mass, the mixture is left to stand for 2-4h and washed with water for 2-3 times, so that the soap content is reduced to be below 12mg/kg, and the oil tea seed oil is vacuum dehydrated for 30-40min at 105 ℃ so that the acid value (KOH) of the oil tea seed oil is reduced to be.
Preferably, the specific step of decoloring in the step 8 is: heating the alkali refined oil to 90 ℃ by a heater, adding 2% of activated clay and 0.5% of activated carbon, mixing and decoloring in a vacuum decoloring tower at the vacuum degree of more than or equal to 0.092MPa, inputting the mixture of the decolored oil and the activated carbon into a vertical blade filter for filtering, finely filtering by a bag filter, removing residual activated carbon in the oil to obtain decolored oil with pigment, residual soap and metal oxide removed, mechanically stirring in the vacuum decoloring tower, and having stable and reliable work and good decoloring effect.
Preferably, the concrete steps of deodorization in the step 8 are as follows: heating the decolored oil to 140 ℃ by a heater, then feeding the oil into a degasser to remove air in the oil, then carrying out heat exchange with the oil completed by a deodorization temperature and odor tower by an oil-oil heat exchanger to recover heat, heating the oil to 240-260 ℃ by heat conduction oil in the last heater, then feeding the oil into the deodorization tower to be deodorized, carrying out heat exchange on the deodorized oil, and then cooling the oil to 60 ℃ by a cooler to obtain finished oil, wherein a high-temperature heat source is supplied by a heat conduction oil furnace.
Preferably, the dewaxing in step 8 comprises the following specific steps: the deodorized oil is conveyed to a heat exchanger by a feed pump according to a certain flow rate to exchange heat with dewaxed oil at a lower temperature, then is cooled to about 5 ℃ by a freezing machine and enters a crystallizing tank, and the temperature is kept in the crystallizing tank for 48 hours to ensure that crystals grow and are large and solid, and the oil is less to facilitate filtration.
Preferably, the third filtration in the step 8 is performed by using a horizontal plate and frame filter, specifically, the frozen and crystallized camellia seed oil is pumped into the horizontal plate and frame filter, conveyed by using a screw pump, the filtered turbid oil is returned and filtered again under the control of frequency conversion, and the clear oil (dewaxed oil) enters a dewaxing finished product storage tank and is stored in a sealed nitrogen-filled manner.
The obtained organic tea oil product is tested to have the trans-fatty acid content less than or equal to 0.5 percent, the natural vitamin E content more than or equal to 300ppm, the phytosterol content more than or equal to 550ppm and the squalene content more than or equal to 200 ppm.
Compared with the prior art, the invention has the following beneficial effects: compared with the first-grade oil tea seed oil sold in the market at present, the organic oil tea seed oil obtained by the method has the advantages of low trans-fatty acid content, high vitamin E, phytosterol and squalene contents, safety, nutrition, health, high nutrient content, no artificial synthetic substances such as pesticides, fertilizers, hormones and the like, and good health-care effect.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
A processing method of organic tea oil comprises the following steps:
1) raw material Collection
The raw material adopts camellia seeds of an organic base, and raw materials from a non-organic base and raw materials containing impurities and having deteriorated quality cannot be mixed;
2) drying treatment
Drying the camellia seeds in a kang or a dry kang at 45-50 ℃ for 10-15 d, drying the camellia seeds in the sun at present, spreading the camellia seeds in a ventilated storehouse, storing for 15-20 days, and naturally drying the camellia seeds in the air, wherein the water content of the camellia seeds is 10% -12% in both cases;
3) raw material treatment
Carrying out air separation, color separation and magnetic separation on the camellia seeds dried in the step 2 in sequence to obtain pure and lossless camellia seeds, wherein impurities and dust in the camellia seeds are removed by adopting an electric windmill for air separation; magnetic separation adopts a magnetic separator to remove metal impurities;
4) shelling
Pouring the camellia seeds obtained in the step 3 into a camellia seed husking machine, husking, separating husked shells and kernels through automatic wind power, putting the separated kernels into a temporary storage box, and packaging the separated shells for warehousing;
5) color sorting
Removing color-changing and mildewing seeds of the tea seeds in the temporary storage box in the step 4 by using a color sorter;
6) crushing
Putting the camellia seed kernels subjected to color selection in the step 5 into a crusher, and crushing the camellia seed kernels into 6-8-petal particles;
7) squeezing machine
Placing the camellia seed kernel particles crushed in the step 8 into a special twin-screw oil press for pressing to prepare crude oil, wherein the feeding mode adopted is manual feeding and mechanical conveying, the material blank enters the twin-screw oil press for pressing, the pressed crude oil containing residues is precipitated and fished for residues through a clarifying oil tank, a blade filter is used for filtering, and the oil residues discharged from the clarifying oil tank and the filter are sent into the oil press for back pressing;
8) refining
And (3) carrying out primary filtration, degumming, deacidification, decoloration, secondary filtration, deodorization, dewaxing and tertiary filtration on the crude oil obtained in the step (7) to finally obtain finished oil, which specifically comprises the following steps:
filtering the crude oil for one time, and degumming;
deacidifying the degummed crude oil, wherein the acid value (KOH) of the camellia seed crude oil is less than 2mg/g, removing part of the acid value by using a deodorization process, and deacidifying the high-value oleic acid crude oil with the acid value (KOH) of 2-5mg/g by using alkali refining;
decolorizing the crude oil after alkali refining by a vacuum decolorizing tower, adding activated carbon for mixing, and filtering for the second time to obtain decolorized oil;
after air in the decolored oil is removed, the decolored oil enters a deodorization tower to be deodorized after heat exchange, the deodorized oil is cooled to obtain finished oil, and the deodorized finished oil is dewaxed, cooled and then enters a crystallizing tank to be crystallized;
filtering the crystallized finished oil for three times to obtain pure finished oil;
specifically, the oil tea crude oil with low acid value (KOH) less than 2mg/g is degummed by hydration, and the method comprises the following specific steps: heating the crude oil after primary filtration to 60-65 ℃, then adding hot water with the temperature 0-5 ℃ higher than that of the crude oil, wherein the hot water amount is 3.5 times of the phospholipid content or 5 percent of the crude oil amount, continuously stirring for 0.5h for degumming, standing for 2-4h, draining, cooling the temperature to normal temperature after draining, and removing tea saponin and mechanical impurities in the camellia seed oil, wherein the phospholipid content of the degummed oil is 27.7 mg/kg;
the alkali refining deacidification is suitable for 2-5mg/g of acid value (KOH) of high-value oleic acid crude oil, and comprises the following specific steps: selecting NaOH solution with the mass fraction of 3.65-8.07% for alkali refining at normal temperature, quickly adding alkali liquor into crude oil with the excess alkali amount of 0.25%, stirring at the speed of 50-60r/min, slowly stirring at 30r/min after adding alkali, reacting for 20min, standing for 4h, draining, heating the oil to 70-80 ℃, keeping the water temperature at 85 ℃, keeping the water amount at 8-10% of the oil mass, standing for 2-4h, washing with water for 2-3 times, reducing the soap content to below 12mg/kg, and performing vacuum dehydration at 105 ℃ for 30-40min to reduce the acid value (KOH) of the camellia seed oil to below 0.2 mg/g;
heating the alkali refined oil to 90 ℃ by a heater, adding 2% of activated clay and 0.5% of activated carbon, mixing and decoloring in a vacuum decoloring tower, inputting the mixture of the decolored oil and the activated carbon into a vertical blade filter for filtering, finely filtering by a bag filter, and removing residual activated carbon in the oil to obtain decolored oil with pigment, residual soap and metal oxide removed, wherein the vacuum decoloring tower adopts mechanical stirring, and has stable and reliable work and good decoloring effect;
heating the decolored oil to 140 ℃ by a heater, then feeding the oil into a degasser, removing air in the oil, then carrying out heat exchange with the oil completed by a deodorization temperature and deodorization tower by an oil-oil heat exchanger, recovering heat, heating the oil to 240-260 ℃ by heat transfer oil in the last heater, then feeding the oil into the deodorization tower for deodorization, carrying out heat exchange on the deodorized oil, then cooling the oil to 60 ℃ by a cooler to obtain the degummed oil, wherein the used high-temperature heat source is supplied by a heat-conducting oil furnace;
the deodorized oil is conveyed to a heat exchanger by a feed pump according to a certain flow rate to exchange heat with dewaxed oil with lower temperature, then is cooled to about 5 ℃ by a freezing machine and enters a crystallizing tank, the crystallizing tank is kept for 48 hours to ensure that crystals grow and grow, the crystals are large and firm, and the oil is wrapped in a small amount so as to be convenient for filtering.
9) Filling
The qualified outlet pressure and flow of the oil storage tank are adjusted to ensure that crystals are not damaged and a good filtering effect is achieved, and filtered oil is pumped into the filling machine to automatically fill and paste the label.
The obtained organic tea oil product is tested to have the trans-fatty acid content less than or equal to 0.5 percent, the natural vitamin E content more than or equal to 300ppm, the phytosterol content more than or equal to 550ppm and the squalene content more than or equal to 200 ppm.
Example 2
A processing method of organic tea oil comprises the following steps:
1) raw material Collection
The raw material adopts camellia seeds of an organic base, and raw materials from a non-organic base and raw materials containing impurities and having deteriorated quality cannot be mixed;
2) drying treatment
Drying the camellia seeds in a kang or a dry kang at 45-50 ℃ for 10-15 d, drying the camellia seeds in the sun at present, spreading the camellia seeds in a ventilated storehouse, storing for 15-20 days, and naturally drying the camellia seeds in the air, wherein the water content of the camellia seeds is 10% -12% in both cases;
3) raw material treatment
Carrying out air separation, color separation and magnetic separation on the camellia seeds dried in the step 2 in sequence to obtain pure and lossless camellia seeds, wherein impurities and dust in the camellia seeds are removed by adopting an electric windmill for air separation; color sorting is carried out by adopting a color sorter to remove damaged and mildewed grains; magnetic separation adopts a magnetic separator to remove metal impurities;
4) shelling
Pouring the camellia seeds obtained in the step 3 into a camellia seed husking machine, husking, separating husked shells and kernels through automatic wind power, putting the separated kernels into a temporary storage box, and packaging the separated shells for warehousing;
5) color sorting
Removing color-changing and mildewing seeds of the tea seeds in the temporary storage box in the step 4 by using a color sorter;
6) crushing
Putting the camellia seed kernels subjected to color selection in the step 5 into a crusher, and crushing the camellia seed kernels into 6-8-petal particles;
7) squeezing machine
Placing the camellia seed kernel particles crushed in the step 8 into a special twin-screw oil press for pressing to prepare crude oil, wherein the feeding mode adopted is manual feeding and mechanical conveying, the material blank enters the twin-screw oil press for pressing, the pressed crude oil containing residues is precipitated and fished for residues through a clarifying oil tank, a blade filter is used for filtering, and the oil residues discharged from the clarifying oil tank and the filter are sent into the oil press for back pressing;
8) refining
And (3) carrying out primary filtration, degumming, deacidification, decoloration, secondary filtration, deodorization, dewaxing and tertiary filtration on the crude oil obtained in the step (7) to finally obtain finished oil, which specifically comprises the following steps:
filtering the crude oil for one time, and degumming;
deacidifying the degummed crude oil, wherein the acid value (KOH) of the camellia seed crude oil is less than 2mg/g, removing part of the acid value by using a deodorization process, and deacidifying the high-value oleic acid crude oil with the acid value (KOH) of 2-5mg/g by using alkali refining;
decolorizing the crude oil after alkali refining by a vacuum decolorizing tower, adding activated carbon for mixing, and filtering for the second time to obtain decolorized oil;
after air in the decolored oil is removed, the decolored oil enters a deodorization tower to be deodorized after heat exchange, the deodorized oil is cooled to obtain finished oil, and the deodorized finished oil is dewaxed, cooled and then enters a crystallizing tank to be crystallized;
filtering the crystallized finished oil for three times to obtain pure finished oil;
specifically, degumming low-acid camellia seed oil by using phosphoric acid, specifically selecting 85% of edible-grade phosphoric acid, adding the edible-grade phosphoric acid with the amount of 0.2% of the oil mass, carrying out continuous stirring degumming on the oil at the temperature of 60 ℃, adding water with the amount of 2-3% of the oil mass, standing, then draining water, cooling the drained water to normal temperature, controlling the content of degummed oil phospholipid to be 27.7mg/kg, and simultaneously removing tea saponin and mechanical impurities in the camellia seed oil;
the alkali refining deacidification is suitable for 2-5mg/g of acid value (KOH) of high-value oleic acid crude oil, and comprises the following specific steps: selecting NaOH solution with the mass fraction of 3.65-8.07% for alkali refining at normal temperature, quickly adding alkali liquor into crude oil with the excess alkali amount of 0.25%, stirring at the speed of 50-60r/min, slowly stirring at 30r/min after adding alkali, reacting for 20min, standing for 4h, draining, heating the oil to 70-80 ℃, keeping the water temperature at 85 ℃, keeping the water amount at 8-10% of the oil mass, standing for 2-4h, washing with water for 2-3 times, reducing the soap content to below 12mg/kg, and performing vacuum dehydration at 105 ℃ for 30-40min to reduce the acid value (KOH) of the camellia seed oil to below 0.2 mg/g;
heating the alkali refined oil to 90 ℃ by a heater, adding 2% of activated clay and 0.5% of activated carbon, mixing and decoloring in a vacuum decoloring tower, inputting the mixture of the decolored oil and the activated carbon into a vertical blade filter for filtering, finely filtering by a bag filter, and removing residual activated carbon in the oil to obtain decolored oil with pigment, residual soap and metal oxide removed, wherein the vacuum decoloring tower adopts mechanical stirring, and has stable and reliable work and good decoloring effect;
heating the decolored oil to 140 ℃ by a heater, then feeding the oil into a degasser, removing air in the oil, then carrying out heat exchange with the oil completed by a deodorization temperature and deodorization tower by an oil-oil heat exchanger, recovering heat, heating the oil to 240-260 ℃ by heat transfer oil in the last heater, then feeding the oil into the deodorization tower for deodorization, carrying out heat exchange on the deodorized oil, then cooling the oil to 60 ℃ by a cooler to obtain the degummed oil, wherein the used high-temperature heat source is supplied by a heat-conducting oil furnace;
the deodorized oil is conveyed to a heat exchanger by a feed pump according to a certain flow rate to exchange heat with dewaxed oil with lower temperature, then is cooled to about 5 ℃ by a freezing machine and enters a crystallizing tank, the crystallizing tank is kept for 48 hours to ensure that crystals grow and grow, the crystals are large and firm, and the oil is wrapped in a small amount so as to be convenient for filtering.
9) Filling
The qualified outlet pressure and flow of the oil storage tank are adjusted to ensure that crystals are not damaged and a good filtering effect is achieved, and filtered oil is pumped into the filling machine to automatically fill and paste the label.
The obtained organic tea oil product is tested to have the trans-fatty acid content less than or equal to 0.5 percent, the natural vitamin E content more than or equal to 300ppm, the phytosterol content more than or equal to 550ppm and the squalene content more than or equal to 200 ppm.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the invention as claimed.
Claims (10)
1. A processing method of organic tea oil is characterized by comprising the following steps: the method comprises the following steps:
1) raw material Collection
The raw material adopts camellia seeds of an organic base, and raw materials from a non-organic base and raw materials containing impurities and having deteriorated quality cannot be mixed;
2) drying treatment
Drying the tea oil seeds by a kang or sun, so that the water content of the tea oil seeds is 10% -12%;
3) raw material treatment
Carrying out air separation, color separation and magnetic separation on the camellia seeds dried in the step 2 in sequence to obtain pure and lossless camellia seeds;
4) shelling
Pouring the camellia seeds obtained in the step 3 into a camellia seed husking machine, husking, separating husked shells and kernels through automatic wind power, putting the separated kernels into a temporary storage box, and packaging the separated shells for warehousing;
5) color sorting
Removing color-changing and mildewing seeds of the tea seeds in the temporary storage box in the step 4 by using a color sorter;
6) crushing
Putting the camellia seed kernels subjected to color selection in the step 5 into a crusher, and crushing the camellia seed kernels into 6-8 pieces of particles;
7) squeezing machine
Placing the camellia seed kernel particles crushed in the step 5 into a special twin-screw oil press for camellia seeds to be pressed to prepare crude oil;
8) refining
Performing primary filtration, degumming, deacidification, decolorization, secondary filtration, deodorization, dewaxing and tertiary filtration on the crude oil in the step 6 to obtain finished oil, wherein the degumming adopts hydration degumming or phosphoric acid degumming, alkali refining deacidification is adopted, activated carbon is adopted for decolorization, a vacuum deodorization tower is adopted for deodorization, and the dewaxing adopts crystallization in a low-temperature crystallization tank;
9) filling
The qualified outlet pressure and flow of the oil storage tank are adjusted to ensure that crystals are not damaged and a good filtering effect is achieved, and filtered oil is pumped into the filling machine to automatically fill and paste the label.
2. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: and 2, drying the kang at 45-50 ℃ for 10-15 d in the drying step, drying the camellia seeds in the sun at the moment, spreading the camellia seeds in a ventilated warehouse, storing for 15-20 days, and naturally drying the camellia seeds.
3. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: and 7, adopting two feeding modes of manual feeding and mechanical conveying, enabling the blank to enter a double-screw oil press for pressing, precipitating and fishing the pressed crude oil containing the residues through an oil clarifying tank, filtering through a blade filter, and sending the oil residues from the oil clarifying tank and the blade filter into the oil press for back pressing.
4. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: the hydration degumming in the step 8 comprises the following specific steps: heating the crude oil after primary filtration to 60-65 deg.C, adding hot water 0-5 deg.C higher than the crude oil, the hot water amount is 3.5 times of phospholipid content or 5% of crude oil amount, continuously stirring for 0.5h to degum, standing for 2-4h, draining, and cooling to room temperature.
5. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: degumming phosphoric acid in the step 8, which comprises the following specific steps: selecting 85% of edible phosphoric acid, adding 0.2% of oil by weight, heating at 60 deg.C, adding 2-3% of water by weight, continuously stirring to degum, standing, draining water, and cooling to room temperature.
6. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: the alkali refining deacidification in the step 8 is suitable for high-valence oleic acid crude oil with the acid value less than 2-5mg/g, and the method specifically comprises the following steps: NaOH solution with the mass fraction of 3.65-8.07% is selected for alkali refining at normal temperature, alkali liquor is quickly added into crude oil with the super-alkali amount of 0.25%, the stirring speed is 50-60r/min, the mixture is slowly stirred at 30r/min after the alkali is added, the mixture reacts for 20min, the mixture is left to stand for 4h, then water is drained, the temperature of the oil is raised to 70-80 ℃, the water temperature is 85 ℃, the water addition amount is 8-10% of the oil mass, the mixture is left to stand for 2-4h, and the mixture is washed with water for 2-3 times, so that the soap content is reduced to be below 12mg/kg, and the oil-tea camellia seed oil is vacuum dehydrated for 30-40min at 105 ℃ so that the acid value is reduced.
7. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: the specific steps of decoloring in the step 8 are as follows: heating the alkali refined oil to 90 ℃ by a heater, adding 2% of activated clay and 0.5% of activated carbon, mixing and decoloring in a vacuum decoloring tower at the vacuum degree of more than or equal to 0.092MPa, inputting the mixture of the decolored oil and the activated carbon into a vertical blade filter for filtering, finely filtering by a bag filter, removing residual activated carbon in the oil to obtain decolored oil with pigment, residual soap and metal oxide removed, and mechanically stirring in the vacuum decoloring tower.
8. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: the concrete steps of deodorization in the step 8 are as follows: heating the decolored oil to 140 ℃ by a heater, then feeding the oil into a degasser to remove air in the oil, then carrying out heat exchange with the oil completed by a deodorization temperature and odor tower by an oil-oil heat exchanger to recover heat, heating the oil to 240-260 ℃ by heat conduction oil in the last heater, then feeding the oil into the deodorization tower to be deodorized, carrying out heat exchange on the deodorized oil, then cooling the oil to 60 ℃ by a cooler to obtain the finished oil, wherein the used high-temperature heat source is supplied by a heat conduction oil furnace.
9. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: the dewaxing in the step 8 comprises the following specific steps: the deodorized oil is conveyed to a heat exchanger by a feed pump according to a certain flow rate to exchange heat with dewaxed oil at a lower temperature, then is cooled to about 5 ℃ by a freezing machine and enters a crystallizing tank, and the temperature is kept in the crystallizing tank for 48 hours to ensure that crystals grow and are large and solid, and the oil is less to facilitate filtration.
10. The method for processing organic tea oil according to claim 1, wherein the method comprises the following steps: and (3) adopting a horizontal plate-and-frame filter for the third filtration in the step 8, specifically pumping the frozen and crystallized camellia oleosa seed oil into the horizontal plate-and-frame filter, conveying the camellia oleosa seed oil by using a screw pump, controlling filtered turbid oil by frequency conversion to return to be filtered again, feeding clean oil into a dewaxing finished product storage tank, and sealing and filling nitrogen for storage.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903902A (en) * | 2019-12-20 | 2020-03-24 | 玉山县大成仓食品有限公司 | Method for refining organic camellia oil with rich nutrition |
| CN113046168A (en) * | 2021-03-30 | 2021-06-29 | 安徽省金天柱农业科技有限公司 | Processing technology of original-fragrance oil tea |
| CN113265296A (en) * | 2021-05-11 | 2021-08-17 | 广州明创生物科技有限公司 | Cold pressing and physical refining method of camellia oil |
| CN113652297A (en) * | 2021-08-26 | 2021-11-16 | 湖南金浩粮油工业有限公司 | Production and processing technology of antioxidant fried tea oil |
| CN113817545A (en) * | 2021-09-29 | 2021-12-21 | 广西壮族自治区林业科学研究院 | Low-temperature gradient drying method for separating oil and bran in tea oil processing |
| CN114806704A (en) * | 2022-04-11 | 2022-07-29 | 湖南亚美茶油股份有限公司 | Tea oil squeezing method |
| CN115197775A (en) * | 2022-06-22 | 2022-10-18 | 湖南林之神林韵油茶科技发展有限公司 | Processing technology of direct-drinking camellia oleosa seed oil |
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2020
- 2020-09-01 CN CN202010902427.6A patent/CN112226274A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110903902A (en) * | 2019-12-20 | 2020-03-24 | 玉山县大成仓食品有限公司 | Method for refining organic camellia oil with rich nutrition |
| CN113046168A (en) * | 2021-03-30 | 2021-06-29 | 安徽省金天柱农业科技有限公司 | Processing technology of original-fragrance oil tea |
| CN113265296A (en) * | 2021-05-11 | 2021-08-17 | 广州明创生物科技有限公司 | Cold pressing and physical refining method of camellia oil |
| CN113652297A (en) * | 2021-08-26 | 2021-11-16 | 湖南金浩粮油工业有限公司 | Production and processing technology of antioxidant fried tea oil |
| CN113817545A (en) * | 2021-09-29 | 2021-12-21 | 广西壮族自治区林业科学研究院 | Low-temperature gradient drying method for separating oil and bran in tea oil processing |
| CN114806704A (en) * | 2022-04-11 | 2022-07-29 | 湖南亚美茶油股份有限公司 | Tea oil squeezing method |
| CN115197775A (en) * | 2022-06-22 | 2022-10-18 | 湖南林之神林韵油茶科技发展有限公司 | Processing technology of direct-drinking camellia oleosa seed oil |
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