CN101530142A - Method for producing soybean oil rich in high unsaturated fatty acid (HUFA) - Google Patents
Method for producing soybean oil rich in high unsaturated fatty acid (HUFA) Download PDFInfo
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- CN101530142A CN101530142A CN200910071904A CN200910071904A CN101530142A CN 101530142 A CN101530142 A CN 101530142A CN 200910071904 A CN200910071904 A CN 200910071904A CN 200910071904 A CN200910071904 A CN 200910071904A CN 101530142 A CN101530142 A CN 101530142A
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Abstract
The invention provides a method for producing soybean oil rich in high unsaturated fatty acid (HUFA) by the steps of taking the soybean oil as a raw material, eliminating oil in partial saturated fatty acid by a physical method of recrystallization and increasing the unsaturated fatty acid content in the soybean oil. The invention relates to physical methods of temperature adjustment back and secondary crystallization; partial saturated fatty acid oil in the oil is separated from oil rich in unsaturated fatty acid; the oil rich in unsaturated fatty acid enjoys low loss and high yield; the unsaturated fatty acid content in the soybean oil is high after separation. Factors related in the invention comprises cooling rate, crystallization temperature, crystallization period, mixing speed and adjusted back temperature. The novel oil rich in unsaturated fatty acid is finally obtained by taking certain amount of soybean oil material and separating the oil rich in saturated fatty acid and the oil rich in unsaturated fatty acid.
Description
Technical field:
The present invention relates to a kind of production and be rich in the method for high unsaturated fatty acid soybean grease, relate to determining best cooling rate, crystallization temperature, crystallization time etc.
Background technology:
Unsaturated fatty acid content such as linoleic acid, leukotrienes is abundant in the soybean oil, especially linoleic acid, content surpasses 50%, has the cholesterol levels that reduces in the blood in view of these unrighted acids, improve the physiological function of immunity of organisms, be used in nutrition fortifier and food additives, edible oil series, the functional health care food more.So it is just particularly important to produce the soybean grease that is rich in high unsaturated fatty acid.
The two-part method of solid, liquid that grease is divided into commonly used at present mainly is the branch formulation, and the grease fractionation technology can divide conventional method (dry method), surfactant method, solvent method and liquid-liquid extraction by its crystallisation by cooling and separation process characteristics.But do not find as yet now with grease be divided into liquid with partly solidify attitude, the method that the grease that is rich in saturated fatty acid is separated with the grease of unrighted acid.
(1) the conventional formulation (dry method) of dividing
Conventional branch formulation is to make grease at crystallisation by cooling (winterization) and crystalline substance, in the liquid separation process, and not additional a kind of fractionation technology of other measure.The dry method branch is carried and can be divided into four steps: preliminary treatment, form nucleus with cooling method, and crystal growing and maturation are separated palmitin with filtration method from solid.The dry method branch is carried has following advance: (1) emits no waste water; (2) simple to operate, safety, all processes is all controlled by computer; (3) full flexibility can be processed any raw material; (4) stability is guaranteed in automation control; (5) product quality is better, pollutes without any solvent detergent; (6) need not use centrifuge; (7) do not need any solvent to reduce production costs.
Though the dry method branch has been put forward its unique superiority, it is low that the dry method branch is put forward efficient, and liquid oil contents is higher in the solid-state fat, makes the brilliant level of solid-state fat and fluid oil low.So some enterprise adds NaCl, Na in the grease crystallisation by cooling stage
2SO
4As the crystallization in motion agent, promote solid-state fat crystallization, improve to divide and put forward effect.
The dry method fractionation technology is widely used in the multiple product branch and carries, and is typically palm fibre the most and puts oil and carry through the dry method branch and can obtain high iodine number fluid oil, high rigidity tristearin, high-quality intermediate species.
(2) surfactant method
Behind the grease crystallisation by cooling, add surfactant, improve the interfacial tension of oil and fat, by affinity between fat and surfactant, form fat and in surfactant, be suspension, promote the brilliant segregation technology of fat to be called the surfactant fractionation technology.The 1950's, the surfactant fractionation technology scale of beginning is used for separation such as palm oil, palm-kernel oil, aliphatic acid.
Surfactant method separative efficiency height, superior product quality, purposes is wide, is suitable for large-scale production; But because surfactant method technology cost height, and surfactant can not be satisfactory to the contamination of products problem.
(3) solvent divides formulation
Solvent branch formulation is meant that mixing a certain solvent in grease in proportion constitutes the miscella system, carries out crystallisation by cooling then, divides and put forward a kind of technology.It is that branch is carried the efficient height that the solvent branch is put forward characteristics, and solid-state fat constituent mass is good.But its cost of investment is too high, the producing cost height, and as the hexane of solvent, acetone, isopropyl alcohols etc. have inflammability, and the additional safety guarantee is provided when requiring Workshop Production.Therefore, the solvent branch is carried and only is used for the production added value than high product, and exemplary is palm oil to be divided to carry obtain its middle component as the cacaolike butter raw material.
Summary of the invention:
The object of the present invention is to provide a kind of production to be rich in the method for high unsaturated fatty acid soybean grease.Described method technology is simple, the yield height, and process is pollution-free.
The present invention is achieved through the following technical solutions: adopt temperature readjustment and secondary crystallization, raw soybeans oil iodine number is: 137.6gI
2/ 100g.
This production method is characterized in that adopting the method for temperature readjustment and secondary crystallization, and carries out low-temperature centrifugation, operates with following process conditions: 2～11 ℃ of h of cooling rate
-1, crystallization temperature-5～-20 ℃, crystallization time 6～36h, mixing speed 5～25r/min, readjustment temperature-10～5 ℃, centrifugation time 10～30min, centrifuging temperature-5～5 ℃, rotating speed 5000～12000r/min.
Advantage of the present invention is: technology is simple, simple operation; Product is stable, and is easily separated; The grease of fractional saturation aliphatic acid separates more complete with the grease that is rich in unrighted acid, it is little to be rich in unsaturated fat acid lipid loss, the yield height.
The specific embodiment:
Earlier with soybean oil 50g with 5 ℃ of h
-1Speed cool the temperature to-15 ℃ and carry out low temperature crystallization, keep 24h.Then temperature is pulled back to-5 ℃, it is more complete to keep 24h that crystal is separated out, and separates centrifugal 15min under 0 ℃ of condition, rotating speed 10000r/min, cutting out partial saturated fatty acid again by refrigerated centrifuge.Repeat above-mentioned steps at last again and carry out secondary crystallization, separation.Obtain being rich in the soybean grease of high unsaturated fatty acid.
Above embodiment, the iodine number 150.2gI of final products
2/ 100g obtains being rich in the soybean grease of high unsaturated fatty acid.
Claims (10)
1, the method for high unsaturated fatty acid soybean grease is rich in a kind of production, it is characterized in that its step is as follows:
Step 1: the determining of best cooling rate, with respectively with 2,5,8,11,14 ℃ of h
-1Speed cool the temperature to-20 ℃ and carry out low temperature crystallization, keep 12h.Determine best cooling rate according to iodine number.
Step 2: the determining of best crystallization time, with 5 ℃ of h
-1Speed cool the temperature to-20 ℃, keep 6,12,24,30 respectively, 36h.Determine best crystallization time according to iodine number.
Step 3: the determining of best crystallization temperature, with 5 ℃ of h
-1Speed temperature is reduced to 0 ,-5 ,-10 ,-15 ,-20 ℃ respectively, keep 24h.Determine best crystallization temperature according to iodine number.
Step 4: the determining of best mixing speed, with 5 ℃ of h
-1Speed cool the temperature to-15 ℃, respectively with 5,10,15,20,25r/min stirs, and keeps 24h.Determine best mixing speed according to iodine number.
Step 5: best the determining of temperature of adjusting back, with 5 ℃ of h
-1Speed cool the temperature to-20 ℃, keep 24h, then temperature pulled back to-10 ,-5,0,5 ℃ respectively.Determine best readjustment temperature according to iodine number.
Step 6: determining of best centrifugation time, the grease after the crystallization is put into refrigerated centrifuge, according to centrifuging temperature-5 ℃, rotating speed 10000r/min, centrifugation time are respectively 10,15,20,25,30min carries out centrifugal.Determine best centrifugation time according to iodine number.
Step 7: determining of best centrifugal rotational speed, the grease after the crystallization is put into refrigerated centrifuge, according to centrifuging temperature-5 ℃, centrifugation time 15min, rotating speed are respectively 5000,8000,10000,12000r/min, carry out centrifugal.Determine best centrifugal rotational speed according to iodine number.
Step 8: determining of best centrifuging temperature, the grease after the crystallization is put into refrigerated centrifuge, be respectively-5 ,-2,0,2,5 ℃ according to centrifuging temperature, centrifugation time 15min, rotating speed 10000r/min carries out centrifugal.Determine best centrifuging temperature according to iodine number.
Step 9: the affirmation of secondary crystallization effect, the grease that is rich in unrighted acid of initial gross separation is carried out secondary crystallization, separation according to above-mentioned steps.Confirm the effect of secondary crystallization according to iodine number.
2, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that cooling rate is 5 ℃ of h in the step 1
-1
3, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that crystallization time is 24h in the step 2.
4, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that crystallization temperature is-15 ℃ in the step 3.
5, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that mixing speed is 15r/min in the step 4.
6, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that the readjustment temperature is-5 ℃ in the step 5.
7, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that centrifugation time is 15min in the step 6.
8, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that centrifugal rotational speed is 10000r/min in the step 7.
9, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that centrifuging temperature is 0 ℃ in the step 8.
10, the method for high unsaturated fatty acid soybean grease is rich in a kind of production according to claim 1, it is characterized in that adopting secondary crystallization in the step 9, and the productive rate that is rich in the grease of unrighted acid improves greatly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910071904A CN101530142A (en) | 2009-04-28 | 2009-04-28 | Method for producing soybean oil rich in high unsaturated fatty acid (HUFA) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910071904A CN101530142A (en) | 2009-04-28 | 2009-04-28 | Method for producing soybean oil rich in high unsaturated fatty acid (HUFA) |
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| CN101530142A true CN101530142A (en) | 2009-09-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105875868A (en) * | 2014-12-19 | 2016-08-24 | 贵州省黎平县黔香园油脂有限公司 | Technology for improving unsaturated fatty acid content in soybean oil |
| CN107164084A (en) * | 2017-05-15 | 2017-09-15 | 乌鲁木齐上善元生物科技有限公司 | A kind of production method of the vegetable oil rich in high content unrighted acid |
-
2009
- 2009-04-28 CN CN200910071904A patent/CN101530142A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105875868A (en) * | 2014-12-19 | 2016-08-24 | 贵州省黎平县黔香园油脂有限公司 | Technology for improving unsaturated fatty acid content in soybean oil |
| CN107164084A (en) * | 2017-05-15 | 2017-09-15 | 乌鲁木齐上善元生物科技有限公司 | A kind of production method of the vegetable oil rich in high content unrighted acid |
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Open date: 20090916 |