CN103937605A - Extraction method of wheat germ oil - Google Patents
Extraction method of wheat germ oil Download PDFInfo
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- CN103937605A CN103937605A CN201410185637.2A CN201410185637A CN103937605A CN 103937605 A CN103937605 A CN 103937605A CN 201410185637 A CN201410185637 A CN 201410185637A CN 103937605 A CN103937605 A CN 103937605A
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Abstract
The invention belongs to the technical field of foods and particularly relates to an extraction method of wheat germ oil. The extraction method comprises the steps of: (1) pretreating; (2) leaching; (3) separating: (4) evaporating and desolventizing; (5) refining. The extraction method has the advantages and effects that a solvent is not needed to be heated, so that the energy consumption is low; 2, the solvent is nontoxic and harmless, so that human bodies can not be injured by the residual solvent.
Description
One, technical field:
The invention belongs to food technology field, be specifically related to a kind of method for extracting wheat embryo oil.
Two, background technology:
Wheatgerm accounts for 2% left and right of wheat grain, elite and the source of life of wheat grain, the protein, fat, multivitamin and some the trace active compositions that contain extremely abundant and high-quality can compare favourably with egg in human nutrition treasure-house, are the outstanding persons in heath food.China is a Wheat Production and consumption big country, and wheatgerm is as the byproduct of whole meal flour source mill, and resource is very abundant, more than the wheatgerm quantity that can be used for every year developing reaches millions of tons.For a long time, most milling plants join again used as fodder in wheat bran having separated wheatgerm out, make this precious resources fail to be used adequately reasonably.
Generally produce wheatgerm oil by the mode of squeezing now, oil yield is low, the wasting of resources.The shortcomings such as also have by the method for extraction and produce, but solvent needs heating, appearance power consumption is high, and solvent is easy residual.
Three, summary of the invention:
The present invention, in order to solve the weak point in above-mentioned background technology, provides a kind of method for extracting wheat embryo oil.
For achieving the above object, the technical solution used in the present invention is: a kind of method for extracting wheat embryo oil, is characterized in that: the step of described extracting method is:
1) pre-treatment
Wheat bran and flour bolt that fresh wheat germ is wherein mingled with separate, then wheatgerm is evenly laid in Stainless Steel Disc, be placed in the baking oven of 100～150 DEG C, under the condition that is 1.5～2.5cm in bed thickness, dry 10～40min, input is preheating in the crusher of temperature >=80 DEG C rolls embryo, obtains plumule;
2) leach
By drying, the plumule that rolls after embryo is placed in batch extractor, the charge amount of batch extractor is tank volume 50～80%, controls temperature at 30～70 DEG C, pressure is 0.2～0.8MPa, pumps into mixed solvent, soaks 30～60min, in immersion process, stir, the rotating speed of rotor is 15～30r/min; Leach four times, second and third soaks all over the mixing oil of using respectively a tank leaching, soaks for the 4th time and uses fresh mix solvent soaking, soaks the mixing oil obtaining be transported to setting tank or temporary tank by four times;
3) separate
The mixing oil of leaching is transported in tapered setting tank, precipitated for 3 stages, the first stage is cooled to 10～20 DEG C of left and right by temperature from 40～60 DEG C of left and right in 3～5h; Subordinate phase is cooled to temperature 7 DEG C of left and right in 5～7h; Temperature is controlled at 5 DEG C by phase III, leaves standstill 3～4h; Mixing oil is divided into three layers, is from top to bottom: mix plumule oil reservoir, solvent layer, gelatinous layer;
4) evaporation precipitation
Take out upper strata mixing plumule oil reservoir, be placed in long-tube evaportor, vacuumize, at absolute pressure 160mmHg, under the condition that temperature is 35～40 DEG C, evaporation twice, evaporates the solvent in mixing oil, obtains germ oil;
5) refining
By the germ oil after pervaporation precipitation, adding volume is that 15～20% NaOH solution carries out alkali-refining deacidification, then according to ordinary method come unstuck, deodorization, obtain wheatgerm oil.
Described step 2) in the volume ratio of plumule and mixed solvent be 1～3:3～8.
Described mixed solvent is that concentration is the ethanolic soln of 70-95%.
Compared with prior art, the present invention has advantage and effect are as follows:
1, solvent does not need heating, consumes energy low.
2, using solvent is nontoxic solvent, and dissolvent residual can not produce harm to human body.
Four, embodiment:
The step of a kind of method for extracting wheat embryo oil of the present invention is:
1) pre-treatment
Wheat bran and flour bolt that fresh wheat germ is wherein mingled with separate, then wheatgerm is evenly laid in Stainless Steel Disc, be placed in the baking oven of 100～150 DEG C, under the condition that is 1.5～2.5cm in bed thickness, dry 10～40min, input is preheating in the crusher of temperature >=80 DEG C rolls embryo, obtains plumule;
2) leach
The plumule of drying, rolling after embryo is placed in to batch extractor, the charge amount of batch extractor is 50～80% of tank volume, control temperature at 30～70 DEG C, pressure is 0.2～0.8MPa, pump into mixed solvent (ethanolic soln that concentration is 70-95%), soak 30～60min, in immersion process, stir, the rotating speed of rotor is 15～30r/min; Leach four times, second and third soaks all over the mixing oil of using respectively a tank leaching, soaks for the 4th time and uses fresh mix solvent soaking, soaks the mixing oil obtaining be transported to setting tank or temporary tank by four times;
Described plumule and the volume ratio of mixed solvent are 1～3:3～8.
3) separate
The mixing oil of leaching is transported in tapered setting tank, precipitated for 3 stages, the first stage is cooled to 10～20 DEG C of left and right by temperature from 40～60 DEG C of left and right in 3～5h; Subordinate phase is cooled to temperature 7 DEG C of left and right in 5～7h; Temperature is controlled at 5 DEG C by phase III, leaves standstill 3～4h; Mixing oil is divided into three layers, is from top to bottom: mix plumule oil reservoir, solvent layer, gelatinous layer;
4) evaporation precipitation
Take out upper strata mixing plumule oil reservoir, be placed in long-tube evaportor, vacuumize, at absolute pressure 160mmHg, under the condition that temperature is 35～40 DEG C, evaporation twice, evaporates the solvent in mixing oil, obtains germ oil;
5) refining
By the germ oil after pervaporation precipitation, adding volume is that 15～20% NaOH solution carries out alkali-refining deacidification, then according to ordinary method come unstuck, deodorization, obtain wheatgerm oil.
Claims (3)
1. a method for extracting wheat embryo oil, is characterized in that: the step of described extracting method is:
1) pre-treatment
Wheat bran and flour bolt that fresh wheat germ is wherein mingled with separate, then wheatgerm is evenly laid in Stainless Steel Disc, be placed in the baking oven of 100～150 DEG C, under the condition that is 1.5～2.5cm in bed thickness, dry 10～40min, input is preheating in the crusher of temperature >=80 DEG C rolls embryo, obtains plumule;
2) leach
By drying, the plumule that rolls after embryo is placed in batch extractor, the charge amount of batch extractor is tank volume 50～80%, controls temperature at 30～70 DEG C, pressure is 0.2～0.8MPa, pumps into mixed solvent, soaks 30～60min, in immersion process, stir, the rotating speed of rotor is 15～30r/min; Leach four times, second and third soaks all over the mixing oil of using respectively a tank leaching, soaks for the 4th time and uses fresh mix solvent soaking, soaks the mixing oil obtaining be transported to setting tank or temporary tank by four times;
3) separate
The mixing oil of leaching is transported in tapered setting tank, precipitated for 3 stages, the first stage is cooled to 10～20 DEG C of left and right by temperature from 40～60 DEG C of left and right in 3～5h; Subordinate phase is cooled to temperature 7 DEG C of left and right in 5～7h; Temperature is controlled at 5 DEG C by phase III, leaves standstill 3～4h; Mixing oil is divided into three layers, is from top to bottom: mix plumule oil reservoir, solvent layer, gelatinous layer;
4) evaporation precipitation
Take out upper strata mixing plumule oil reservoir, be placed in long-tube evaportor, vacuumize, at absolute pressure 160mmHg, under the condition that temperature is 35～40 DEG C, evaporation twice, evaporates the solvent in mixing oil, obtains germ oil;
5) refining
By the germ oil after pervaporation precipitation, adding volume is that 15～20% NaOH solution carries out alkali-refining deacidification, then according to ordinary method come unstuck, deodorization, obtain wheatgerm oil.
2. a kind of method for extracting wheat embryo oil according to claim 1, is characterized in that: described step 2) in the volume ratio of plumule and mixed solvent be 1～3:3～8.
3. a kind of method for extracting wheat embryo oil according to claim 1, is characterized in that: described mixed solvent is that concentration is the ethanolic soln of 70-95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185637.2A CN103937605A (en) | 2014-05-05 | 2014-05-05 | Extraction method of wheat germ oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185637.2A CN103937605A (en) | 2014-05-05 | 2014-05-05 | Extraction method of wheat germ oil |
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| CN103937605A true CN103937605A (en) | 2014-07-23 |
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| CN201410185637.2A Pending CN103937605A (en) | 2014-05-05 | 2014-05-05 | Extraction method of wheat germ oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132130A (en) * | 2015-08-20 | 2015-12-09 | 成都市新津迎先粮油有限公司 | Seed stir-frying method for rapeseed oil |
| CN105482891A (en) * | 2015-09-30 | 2016-04-13 | 东明县益康源食品有限公司 | Preparation method for selenium-rich wheat germ oil |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121910A (en) * | 2007-09-03 | 2008-02-13 | 江苏大学 | Method for extracting wheat germ oil by compression solvent |
| CN101260343A (en) * | 2008-04-24 | 2008-09-10 | 杨宝侠 | Method for extracting wheat embryo oil |
| CN101796983A (en) * | 2009-02-10 | 2010-08-11 | 山东临邑瑞海油脂厂 | Novel preparation technology of vegetable health care oil |
-
2014
- 2014-05-05 CN CN201410185637.2A patent/CN103937605A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101121910A (en) * | 2007-09-03 | 2008-02-13 | 江苏大学 | Method for extracting wheat germ oil by compression solvent |
| CN101260343A (en) * | 2008-04-24 | 2008-09-10 | 杨宝侠 | Method for extracting wheat embryo oil |
| CN101796983A (en) * | 2009-02-10 | 2010-08-11 | 山东临邑瑞海油脂厂 | Novel preparation technology of vegetable health care oil |
Non-Patent Citations (3)
| Title |
|---|
| 刘煜，等: "四号溶剂提取番茄籽油工艺和生产技术", 《粮食与油脂》, no. 9, 31 December 2001 (2001-12-31), pages 39 - 40 * |
| 刘煜，等: "四号溶剂浸出大米胚芽油工艺技术", 《粮食与油脂》, no. 7, 31 December 2003 (2003-12-31), pages 35 - 37 * |
| 左青，等: "液态烃(C3～ C4) 浸出小麦胚芽油", 《中国油脂》, vol. 23, no. 6, 31 December 1998 (1998-12-31), pages 10 - 11 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105132130A (en) * | 2015-08-20 | 2015-12-09 | 成都市新津迎先粮油有限公司 | Seed stir-frying method for rapeseed oil |
| CN105482891A (en) * | 2015-09-30 | 2016-04-13 | 东明县益康源食品有限公司 | Preparation method for selenium-rich wheat germ oil |
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Application publication date: 20140723 |