CN102766525A - Method for squeezing tea seed oil at normal temperature - Google Patents
Method for squeezing tea seed oil at normal temperature Download PDFInfo
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- CN102766525A CN102766525A CN2012102470515A CN201210247051A CN102766525A CN 102766525 A CN102766525 A CN 102766525A CN 2012102470515 A CN2012102470515 A CN 2012102470515A CN 201210247051 A CN201210247051 A CN 201210247051A CN 102766525 A CN102766525 A CN 102766525A
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Abstract
The invention provides a method for squeezing tea seed oil at normal temperature. The method comprises the steps of low-temperature drying of tea seeds, separation of seed hulls, low-temperature extrusion squeezing, refining of crude oil and the like, and particularly comprises the following steps of: (1) during refining, performing continuous cycle operation of collecting the crude oil at normal pressure at first, filtering the crude oil, cleaning a filter screen, and fishing up and discharging slag; (2) performing mixed acidification washing and degumming; (3) standing the crude oil, heating the crude oil to 50 to 60 DEG C, preserving heat, and standing the crude oil for 60 to 72 hours at a constant temperature to separate and remove water and impurities in the crude oil; (4) dehydrating the crude oil without the impurities at a low temperature under a vacuum condition; (5) standing the dewatered crude oil at 5 DEG C, crystallizing the crude oil, growing crystal for 48 hours, and separating waxiness and lipid in the oil; and (6) performing diaphragm pressure filtration on the tea seed oil after crystal removal, and removing the waxiness and the lipid in the oil to obtain refined tea seed oil. The method is performed under the condition that the temperature is not higher than 65 DEG C, and is simple in process, low in energy consumption and high in oil yield, and the squeezed seed oil is high in quality, so that the method belongs to environmental-friendly processes.
Description
Technical field
The invention belongs to the grease manufacture field, specifically is a kind of processing technology of tea seed oil.
Background technology
Ministry of Health's approval tea seed oil was a new resource food in 2009.But current in high-quality tea seed oil is produced owing to exist a series of technical bottleneck problems, this resources advantage to fail really to be converted into economic advantages.Research and solve the key technical problem in the high-quality tea oil production, become the oil prodution industry development and be badly in need of.
The tea seed oil unsaturated fatty acid content surpasses sweet oil, reaches more than 83%, and content of vitamin E is high, particularly is rich in tea-polyphenol, is the extremely abundant edible oil of a kind of nutritive value, is described as " the top nutritional oil in east ".
Current; The subject matter that the high-quality tea seed oil production of China exists is: the tea seed oil that the hot moulding method is produced is prone to make natural nutrient component in the tea seed oil, active substance and intrinsic loss of aroma; It is dark to make the tea seed oil color, must carry out further refining processing, and energy consumption is big.The low temperature pressing method is produced tea seed oil, shelling and shell benevolence separation difficulty, and shelling back tea-seed benevolence oil length is high, and the pressurization difficulty is prone to the knot thorax, and common oil press zhai can't run well.There are problems such as energy consumption is big, oil quality instability in refining procedure.The tea-seed source is numerous in variety, and grease composition and active ingredient difference are big, and the standardized production technology is demanded urgently setting up.
Summary of the invention
The purpose of this invention is to provide a kind of tea seed oil normal temperature pressing method, operational path is reasonable, and oil yield is high, and oil quality is high.
Technical scheme of the present invention is following:
Tea seed oil normal temperature pressing method; Comprise steps such as tea-seed oven dry, seed shell separate, the low temperature extruding is squeezed, crude oil is refining; It is characterized in that: the oven dry of described tea-seed is that the tea-seed that purchase comes is screened immediately, behind 50 ℃ of left and right sides continuous mechanized oven dry and the exhausting hydrofuge 1h, is transported to down after tea seed water ratio reduces to 10% and goes on foot operation; Described crude oil is refining to be may further comprise the steps: (1) is at first collected crude oil filtration, filter screen cleaning, is dragged for the continuous cycle operation of slag deslagging under normal pressure; (2) pickling, washing add 50% Hydrocerol A and the 80% phosphoric acid mixing acid that account for oil-tea camellia seed crude oil gross weight 0.01-0.015% and get in the crude oil after removing slag; Add then that to account for oil-tea camellia seed crude oil gross weight 5-6%, temperature be 50-60 ℃ hot water; Get into thorough mixing in the static mixer together, get into again in the washing whizzer and come unstuck; (3) leave standstill crude oil, the crude oil after above-mentioned the coming unstuck is heated to 55-60 ℃ of insulation, and feeds ozone, and constant temperature left standstill 60-72 hour, separates moisture and the impurity removed in the oil; (4) and then with removal of impurities crude oil low temperature dewatering 2-3h under 55-60 ℃, 720mmHg vacuum, remove below the water content in oil to 0.1%; (5) crude oil that will dewater leaves standstill under 5 ℃, and crystallization, growing the grain 48h separate out wax in the oil with ester matter and separate; (6) will carry out the barrier film press filtration except that brilliant back tea seed oil, WP 0.3Mpa removes wax and ester matter in the oil, obtains refining tea seed oil.
Described low temperature extruding squeezing is meant extruding squeezing at normal temperatures, in tea-seed benevolence, mixes the grouts of 5-8% during squeezing.
Contain the minor amount of oil grouts after the described low temperature extruding squeezing, be mixed into defibrination in the aqueous ethanolic solution of 65-75%, leave standstill behind the defibrination, tea oil floats over the upper strata, isolates tea oil.
The present invention adopts low temperature flash baking technology, and tea-seed is behind screening, 50 ℃ of left and right sides continuous mechanized oven dry and exhausting hydrofuge 1h, and tea seed water ratio is reduced to about 10% very soon.Tea-seed after the oven dry can satisfy the requirement of postchannel process, and can reduce and go mouldy, and helps standing storage.And traditional a heatable brick bed room drying process floor space is big, drying time long (general more than 24 hours), handle that output is little, labour intensity is big, and the tea seed absorb cigarette vapour after contaminated quality descend, especially sanitary index benzopyrene content raises.
The present invention adopts tea-seed benevolence shell to separate the back squeezing, helps improving oil yield.
Grouts after the present invention will squeeze last time are incorporated in the tea-seed and squeeze, and can increase the gap between the tea-seed squeezing back, help oozing out of oil, can improve 2% oil yield.
The oil that also contains 5-6% in the grouts in the prior art after the squeezing, the common organic solvents extraction exists and pollutes; Reduced fuel-displaced grade, the present invention adopts the aqueous ethanolic solution defibrination, can effectively the oil immersion in the grouts be gone out; Can the oil immersion in the grouts be gone out more than 90%; That leaches simultaneously is oily pollution-free, and grade is high, has increased income.Defibrination in the aqueous ethanolic solution of 65-75%, oil yield is the highest.
Process for refining of the present invention; Be employed in the crude oil that removes slag and add 50% Hydrocerol A and the 80% phosphoric acid mixing acid that account for oil-tea camellia seed crude oil gross weight 0.01-0.015% and carry out pickling, washing; Add then that to account for oil-tea camellia seed crude oil gross weight 5-6%, temperature be 50-60 ℃ hot water, carry out centrifugal coming unstuck; Adopt 55-60 ℃ to adopt 50-60 ℃, 72 hours constant temperature to leave standstill technology, remove moisture and impurity in the oil.Adopt 55-60 ℃, the low temperature dewatering technology of 2-3h, 720mmHg vacuum, remove below the water content in oil to 0.1%.Adopt 5 ℃, the low temperature winterization technology of 48h crystallization, growing the grain, separate out wax and ester matter in the oil, and adopt the barrier film pressure filtering technique, wax and ester matter in the removal oil.Processing condition are gentle, do not have organic solvent to mix, and can guarantee greasy quality.Feed ozone and can remove wherein easy oxydised component and impurity, can prolong the tea oil preservation period after separating.
Table 1
The lipid acid of tea seed oil and tea oil is formed contrast
Embodiment
Implement 1
Tea seed oil normal temperature pressing method, concrete operations are following:
At first tea-seed oven dry; The tea-seed that purchase is come screens immediately, behind 50 ℃ of left and right sides continuous mechanized oven dry and the exhausting hydrofuge 1h; Be transported to after tea seed water ratio reduces to 10% and carry out the separation of seed shell in the decorticator; Squeeze down at normal temperatures then, obtain crude oil, crude oil is made with extra care may further comprise the steps: (1) collects under normal pressure at first that crude oil filters, the filter screen cleaning, drag for the continuous cycle operation of slag deslagging; (2) pickling, washing add 50% Hydrocerol A and the 80% phosphoric acid mixing acid that account for oil-tea camellia seed crude oil gross weight 0.01-0.015% and get in the crude oil after removing slag; Add then that to account for oil-tea camellia seed crude oil gross weight 5-6%, temperature be 55-65 ℃ hot water; Get into thorough mixing in the static mixer together, get into again in the washing whizzer and come unstuck; (3) leave standstill crude oil, be heated to 50 ℃ of insulations, and press crude oil weight 4% adding salt, after fully stirring, and feed ozone, constant temperature left standstill 65 hours, separated moisture and impurity in the removal oil; (4) and then with removal of impurities crude oil low temperature dewatering 2.5h under 55 ℃, 720mmHg vacuum, remove below the water content in oil to 0.1%; (5) crude oil that will dewater leaves standstill under 5 ℃, crystallization, growing the grain 48h, and separate out wax in the oil with ester matter and separates: brilliant back tea seed oil will be removed in (6) carry out the barrier film press filtration, WP 0.3Mpa, wax and ester matter in the removal oil obtain making with extra care tea seed oil.
Embodiment 2
Tea seed oil normal temperature pressing method, main working method are with embodiment 1, and different places are the grouts that when squeezing, in tea-seed benevolence, mix 5-8%, and squeezing has improved oil yield 2% together.
Embodiment 3
Tea seed oil normal temperature pressing method, main working method is with embodiment 1, and different places are to have increased the grouts refining process; Specific practice is that grouts behind the low temperature pressing are mixed into defibrination in 70% the aqueous ethanolic solution; Leave standstill behind the defibrination, tea oil floats over the upper strata, isolates tea oil; Isolated tea oil turns back to vacuum dewatering technique, carries out conventional subsequent disposal.
Claims (3)
1. tea seed oil normal temperature pressing method; Comprise steps such as tea-seed oven dry, seed shell separate, the low temperature extruding is squeezed, crude oil is refining; It is characterized in that: the oven dry of described tea-seed is that the tea-seed that purchase comes is screened immediately, behind 50 ℃ of left and right sides continuous mechanized oven dry and the exhausting hydrofuge 1h, is transported to down after tea seed water ratio reduces to 10% and goes on foot operation; Described crude oil is refining to be may further comprise the steps: (1) is at first collected crude oil filtration, filter screen cleaning, is dragged for the continuous cycle operation of slag deslagging under normal pressure; (2) pickling, washing add 50% Hydrocerol A and the 80% phosphoric acid mixing acid that account for oil-tea camellia seed crude oil gross weight 0.01-0.015% and get in the crude oil after removing slag; Add then that to account for oil-tea camellia seed crude oil gross weight 5-6%, temperature be 55-65 ℃ hot water; Get into thorough mixing in the static mixer together, get into again in the washing whizzer and come unstuck; (3) leave standstill crude oil, the crude oil after above-mentioned the coming unstuck is heated to 55-60 ℃ of insulation, and feeds ozone, and constant temperature left standstill 60-72 hour, separates moisture and the impurity removed in the oil; (4) and then with removal of impurities crude oil low temperature dewatering 2-3h under 55-60 ℃, 720mmHg vacuum, remove below the water content in oil to 0.1%; (5) crude oil that will dewater leaves standstill under 5 ℃, and crystallization, growing the grain 48h separate out wax in the oil with ester matter and separate; (6) will carry out the barrier film press filtration except that brilliant back tea seed oil, WP 0.3Mpa removes wax and ester matter in the oil, obtains refining tea seed oil.
2. tea seed oil normal temperature pressing method according to claim 1 is characterized in that: described low temperature extruding squeezing is meant extruding squeezing at normal temperatures, in tea-seed benevolence, mixes the grouts of 5-8% during squeezing.
3. tea seed oil normal temperature pressing method according to claim 1; It is characterized in that: the grouts that contain minor amount of oil after the described low temperature extruding squeezing, be mixed into defibrination in the aqueous ethanolic solution of 65-75%, leave standstill behind the defibrination; Tea oil floats over the upper strata, isolates tea oil.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140888A (en) * | 2014-08-19 | 2014-11-12 | 合肥工业大学 | Low-temperature dehydration method of tea oil |
| CN107714605A (en) * | 2017-10-27 | 2018-02-23 | 浙江晟泰茶油科技有限公司 | A kind of tea oil bath oil |
| CN112920891A (en) * | 2021-03-05 | 2021-06-08 | 河北宁心机械设计有限公司 | Virgin peanut oil and production process thereof |
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| CN101735886A (en) * | 2009-12-23 | 2010-06-16 | 湖南金浩茶油股份有限公司 | Novel process for refining oil-tea camellia seed crude oil |
| CN101880596A (en) * | 2010-07-13 | 2010-11-10 | 中国农业科学院油料作物研究所 | Method for preparing oil at low temperature |
| CN101886024A (en) * | 2010-07-13 | 2010-11-17 | 陕西华丰农林科技有限公司 | Physical low-temperature cold pressing process of tea seed oil |
| CN102028042A (en) * | 2010-10-28 | 2011-04-27 | 福建省尤溪县沈郎食用油有限公司 | Method and equipment for preparing tea seed oil from tea seeds and extracting tea polyphenol from byproduct tea seed cake |
| CN102533426A (en) * | 2011-11-18 | 2012-07-04 | 中国农业科学院油料作物研究所 | Processing method for improving flavor and nutritional quality of colza oil |
-
2012
- 2012-07-17 CN CN201210247051.5A patent/CN102766525B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101735886A (en) * | 2009-12-23 | 2010-06-16 | 湖南金浩茶油股份有限公司 | Novel process for refining oil-tea camellia seed crude oil |
| CN101880596A (en) * | 2010-07-13 | 2010-11-10 | 中国农业科学院油料作物研究所 | Method for preparing oil at low temperature |
| CN101886024A (en) * | 2010-07-13 | 2010-11-17 | 陕西华丰农林科技有限公司 | Physical low-temperature cold pressing process of tea seed oil |
| CN102028042A (en) * | 2010-10-28 | 2011-04-27 | 福建省尤溪县沈郎食用油有限公司 | Method and equipment for preparing tea seed oil from tea seeds and extracting tea polyphenol from byproduct tea seed cake |
| CN102533426A (en) * | 2011-11-18 | 2012-07-04 | 中国农业科学院油料作物研究所 | Processing method for improving flavor and nutritional quality of colza oil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104140888A (en) * | 2014-08-19 | 2014-11-12 | 合肥工业大学 | Low-temperature dehydration method of tea oil |
| CN104140888B (en) * | 2014-08-19 | 2016-03-23 | 合肥工业大学 | A kind of low temperature dewatering method of tea oil |
| CN107714605A (en) * | 2017-10-27 | 2018-02-23 | 浙江晟泰茶油科技有限公司 | A kind of tea oil bath oil |
| CN112920891A (en) * | 2021-03-05 | 2021-06-08 | 河北宁心机械设计有限公司 | Virgin peanut oil and production process thereof |
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| CN102766525B (en) | 2014-01-29 |
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Denomination of invention: Method for squeezing tea seed oil at normal temperature Effective date of registration: 20150108 Granted publication date: 20140129 Pledgee: Shucheng Jinlong financing Company limited by guarantee Pledgor: Anhui Huayin Camellia Oil Co., Ltd. Registration number: 2015990000023 |
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Date of cancellation: 20181113 Granted publication date: 20140129 Pledgee: Shucheng Jinlong financing Company limited by guarantee Pledgor: Anhui Huayin Camellia Oil Co., Ltd. Registration number: 2015990000023 |
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