Green processing method of virgin tea oil

A processing method and technology of camellia oil, applied in the direction of fat oil/fat production, fat oil/fat refining, fat production, etc., can solve the problems of few steps, complex process, high nutritional value, etc., to prevent oxidative deterioration, avoid environmental pollution, and produce products high quality effect

Active Publication Date: 2014-09-10
温州瑞雪农业开发有限公司
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AI Technical Summary

Problems solved by technology

[0006] There are also some relatively good processing methods for pressing camellia oil now, as disclosed on October 31, 2012, in the Chinese patent whose publication number is CN102757858A, a double-screw low-temperature pressing production method of camellia oil is disclosed. The method comprises the following steps: a) drying at low temperature; drying the screened tea seeds with a flat-panel dryer and an exhaust fan at a drying temperature of 45-55°C and a drying time of 55-65 minutes, and the dried tea seeds The moisture content of the seed is 6-10%; b) shelling and separation; c) low-temperature pressing; d) static filtration; e) winterization treatment; f) finished product; The static filtration process can avoid excessive heating and excessive chemical treatment of oil, avoid harmful substance residues during high-temperature processing, and avoid acid, alkali, and heavy metal residues caused by adding chemical additives. However, the process of this method is complicated. It is difficult to effectively ensure the low acid value and low peroxide value of the product
Another example is the publication date of November 07, 2012, and the Chinese patent publication number CN102766527A discloses a method for low-temperature pressing and refining of tea seed oil, which includes low-temperature drying of tea seeds, separation of seed husks, and low-temperature extrusion. Pressing, crude oil refining and other steps, during refining (1) firstly collect crude oil under normal pressure for filtration, filter screen cleaning, slag removal and slag discharge; , and stand at a constant temperature for 60-72 hours to separate and remove the moisture and impurities in the oil; (3) Then dehydrate the impurity-removed crude oil at 55-60°C and 720mmHg vacuum for 2-3 hours at a low temperature to remove the moisture in the oil to 0.1% or less; (4) Stand the dehydrated crude oil at 5°C, crystallize and grow crystals for 48 hours, and separate the waxes and esters in the oil; Filtration, working pressure 0.3Mpa, remove wax and ester in the oil, to obtain refined tea seed oil; although this method has low energy consumption and high oil yield, it is also difficult to effectively ensure the low acid value and Low peroxide value, and no harmful substances such as benzopyrene in the product
Another example is that the date of publication is June 27, 2012, and the publication number is CN102517141A in the Chinese patent, which discloses a method for producing camellia oil at a purely physical low temperature. The method comprises the following steps: 1, drying treatment; 2, removing Shell processing; 3. Pressing crude oil; 4. Obtaining camellia oil after filtering; 5. Washing the camellia oil, which includes two steps; 6. Deodorizing the washed camellia oil; 7. Drying and cooling; 8. Low-temperature crystal growth; 9. Fine filtration; the whole process of this method adopts pure physical process without adding chemical substances, but this method also requires high-temperature deodorization treatment
[0007] In summary, there is no green tea oil processing method with low pressing and refining temperature, low energy consumption, few steps, high nutritional value, low acid value and peroxide value, and no harmful substances such as benzopyrene

Method used

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Embodiment 1

[0033] Green lightly pressed tea oil processing method comprises the following steps in the present embodiment.

[0034] (1) Select mature tea seed raw materials, transport them to the processing point within 24 hours, and remove moldy and shriveled seeds.

[0035] (2) Dry the picked tea seeds in a microwave vacuum. The microwave frequency can be 2450MHz, the standard frequency of an industrial dryer. %, the dried tea seeds are sent to the shelling machine for shelling, and the shelling rate is over 99%. The shelled tea seeds are removed by winnowing, so that the shelling rate in the tea seed kernel is less than 0.5%. The microwave vacuum drying temperature of the present invention is generally not higher than 60°C, for example, it can be 40°C, 45°C, 50°C or 55°C, and the vacuum degree is generally 7.4Kpa, 9.6Kpa, 12.3Kpa or 15.8Kpa according to the drying temperature , generally dried to a moisture content of 5-9%, after drying, shelling and winnowing, the shelling rate can ...

Embodiment 2

[0044] Green lightly pressed tea oil processing method comprises the following steps in the present embodiment.

[0045] (1) Pick 10,000kg of mature camellia seeds at the base, transport them to the processing site within 24 hours, and complete the picking process to remove shriveled and moldy seeds.

[0046] (2) Transport the picked camellia seeds to a microwave vacuum dryer, dry the camellia seeds to a moisture content of 6% at a frequency of 2450MHz, a vacuum of 12.3Kpa, and a drying temperature of 50°C, and dry the dried camellia seeds The seeds are transported into the shelling machine for shelling, and the shelled camellia kernels are then air-selected. The air-selected camellia kernels are about 1200kg, of which the shell content is less than 1kg.

[0047] (3) The camellia seed kernels after shelling and winnowing are transported into a cold press for light pressing, the oil output temperature is lower than 95°C, and the oil output rate is controlled at 70%, to obtain 4...

Embodiment 3

[0052] Green lightly pressed tea oil processing method comprises the following steps in the present embodiment.

[0053] (1) Pick 1000kg of mature tea seeds in the tea garden, transport them to the processing site within 12 hours, and complete the picking process to remove shriveled and moldy seeds.

[0054] (2) Transport the picked tea seeds to a microwave vacuum dryer, dry the tea seeds to a moisture content of 8% at a frequency of 2450MHz, a vacuum of 9.6Kpa, and a drying temperature of 45°C, and dry the dried camellia The seeds are transported into the shelling machine, and the shelled camellia kernels are then air-selected. The air-selected tea kernels are about 240kg, of which the shell content is less than 0.2kg.

[0055] The tea seed kernels after husking and winnowing are sent to the refrigerator for refrigeration at a temperature of -2°C. Wait for the tea seeds from other regions to be pre-treated and enter the next process for processing, reaching 1000kg for subsequ...

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Abstract

The invention relates to a green processing method of green virgin tea oil. At present, no green tea oil processing method which has the advantages of low pressing and refining temperature, low energy consumption and fewer steps is available. The green processing method comprises the following steps of: selecting and picking mature tea seeds; seeking and removing mildewed and flat tea seeds within 24 hours; drying the obtained tea seeds in a microwave vacuum way until the content of water reaches 5 to 9%; hulling, wherein the hulling rate is over 99%; removing the hulls, wherein the hull content is less than 0.5%; cold pressing the treated tea seeds in a cold-pressing machine to obtain the tea oil, wherein the oil discharge temperature is below 100 DEG C, and the oil discharge rate is 50%-80%; removing solid impurities from the pressed tea oil through a drum-film type plate-and-frame filter press; adding the filtered tea oil into a settling tank; feeding pressurizing air; maintaining the pressure to 0.12 to 0.14MPa and temperature to 0 to 10 DEG C for 1 to 20 days; educing the upper settled tea oil; and canning to obtain the finished product. The green processing method provided by the invention is simple in technology, low in energy consumption and high in product quality.

Description

technical field [0001] The invention relates to a processing method of tea seed oil, in particular to a processing method of green lightly pressed tea oil, which belongs to the green processing technology of lightly pressing camellia seeds and tea seeds to produce oil and natural sedimentation. Background technique [0002] Camellia seeds and tea seeds are the seeds of Camellia oleifera and tea leaves, and are one of the oldest traditional woody edible vegetable oils in my country. Their fatty acid composition is very reasonable, and they contain tea polysaccharides, saponins, flavonoids, tea polyphenols, and vitamins. and phytosterols and other nutritional and functional active substances. Regular consumption of tea seed oil has the effects of reducing three highs, improving immunity, anti-radiation, scavenging free radicals, and preventing tumors. It is a healthy edible oil and a topical oil for health care. [0003] At present, the extraction process of tea seed oil basica...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C11B1/06C11B3/00
Inventor童晓青钱华王衍彬刘本同
Owner温州瑞雪农业开发有限公司