CN105368572A - Rice bran oil refining purification processes - Google Patents
Rice bran oil refining purification processes Download PDFInfo
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- CN105368572A CN105368572A CN201410411622.3A CN201410411622A CN105368572A CN 105368572 A CN105368572 A CN 105368572A CN 201410411622 A CN201410411622 A CN 201410411622A CN 105368572 A CN105368572 A CN 105368572A
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- oil
- rice bran
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- rice
- temperature
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- 238000007670 refining Methods 0.000 title claims abstract description 22
- 235000019774 Rice Bran oil Nutrition 0.000 title claims abstract description 20
- 239000008165 rice bran oil Substances 0.000 title claims abstract description 20
- 238000000746 purification Methods 0.000 title abstract 2
- 239000003921 oil Substances 0.000 claims abstract description 54
- 235000019198 oils Nutrition 0.000 claims abstract description 54
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 34
- 238000003756 stirring Methods 0.000 claims abstract description 20
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 14
- 238000004332 deodorization Methods 0.000 claims abstract description 9
- 238000005119 centrifugation Methods 0.000 claims abstract description 7
- 238000002386 leaching Methods 0.000 claims abstract description 6
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 5
- 239000007864 aqueous solution Substances 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 241000209094 Oryza Species 0.000 claims description 47
- 235000007164 Oryza sativa Nutrition 0.000 claims description 47
- 235000009566 rice Nutrition 0.000 claims description 47
- 241000269319 Squalius cephalus Species 0.000 claims description 34
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 238000004061 bleaching Methods 0.000 claims description 24
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000009874 alkali refining Methods 0.000 claims description 10
- 239000004927 clay Substances 0.000 claims description 8
- 235000019476 oil-water mixture Nutrition 0.000 claims description 8
- 239000000284 extract Substances 0.000 claims description 7
- 239000013557 residual solvent Substances 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000010779 crude oil Substances 0.000 claims description 4
- 238000004042 decolorization Methods 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 230000001007 puffing effect Effects 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 238000010025 steaming Methods 0.000 claims description 4
- 238000010792 warming Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000012535 impurity Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 2
- 230000008014 freezing Effects 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 150000002632 lipids Chemical class 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- HVCOBJNICQPDBP-UHFFFAOYSA-N 3-[3-[3,5-dihydroxy-6-methyl-4-(3,4,5-trihydroxy-6-methyloxan-2-yl)oxyoxan-2-yl]oxydecanoyloxy]decanoic acid;hydrate Chemical compound O.OC1C(OC(CC(=O)OC(CCCCCCC)CC(O)=O)CCCCCCC)OC(C)C(O)C1OC1C(O)C(O)C(O)C(C)O1 HVCOBJNICQPDBP-UHFFFAOYSA-N 0.000 description 1
- 229930186217 Glycolipid Natural products 0.000 description 1
- 102000003886 Glycoproteins Human genes 0.000 description 1
- 108090000288 Glycoproteins Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
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- Fats And Perfumes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention discloses a rice bran oil refining purification process, which comprises leaching, refining, decolorizing, deacidification, deodorization and other steps, wherein a degumming and dewaxing operation exists between the leaching operation and the refining operation, and the process concretely comprises placing crude rice bran oil in a container with a stirrer, adding an oxalic acid aqueous solution, carrying out stirring heating, standing, stirring the oxalic acid degumming oil, heating, filtering, adding a calcium chloride solution, and carrying out freezing centrifugation to obtain the degummed and dewaxed rice bran oil. According to the present invention, the energy consumption of the process is low, the oil yield is high, the decolorizing effect of the rice bran oil is good, and the rice bran oil is subjected to the impurity treatment during the production process so as to further reduce the content of the impurity in the oil and improve the oil quality.
Description
Technical field
The present invention relates to processing of agriculture product field, particularly a kind of refining of crude rice bran oil purifying technique.
Background technology
Rice bran is the byproduct in paddy processing process, and oleaginousness reaches 15-22%, and Rice pollard oil is a kind of high-quality edible oil, containing lipids such as glycolipid, glycoprotein, lipid acid, has the effect promoting growth in humans; And there is the advantages such as save-resistant, thermal oxidation resistance, be called as " healthy oil ", " nutritional oil ", there are extraordinary market outlook.In prior art, solvent extraction method oil yield is high compared with other two kinds, and easily scale operation, therefore, suitability is strong; But, in prior art, the Rice pollard oil obtained is produced by solvent extraction method, have the advantages that color and luster is darker, and energy consumption in production process is high, Rice pollard oil extracts not exclusively, more containing impurity, the existence of hair well cuts, not only affects edibleness and the safe storage of grease, and brings difficulty to deep processing.
Thus, according to Chinese Enterprises present situation, neither improve equipment on a large scale and can oil yield be increased and produce Rice pollard oil and conform with the production technique of national standard or production method becomes necessary.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, a kind of refining of crude rice bran oil purifying technique is provided, this explained hereafter energy consumption is low, oil yield is high, and the Rice pollard oil of good decolorizing effect, Rice pollard oil carry out impurity treatment in production process, the content of further reduction well cuts, improves the quality of oil.
In order to solve above technical problem, the invention provides a kind of refining of crude rice bran oil purifying technique, comprising following concrete steps:
(1) through rice bran degree of grinding 50 order, the water content 7% of wet method puffing, add leaching solvent Virahol by solid-liquid ratio 1: 5 (W/V), pH value is 6.4-6.6; Add the papoid that quality is rice bran 0.1-0.12%, the water of 8-12 times amount, stirs simultaneously; Extraction time is 4-8h;
(2) refining: alkali refining initial temperature 45 DEG C, KOH concentration 18.5%, excess alkali quantity 0.4%, and filter;
(3) decolour: adopt secondary decolourization technique, the 1st active bleaching clay dosage 4%, bleaching time 30 minutes, bleaching temperature 90 DEG C; 2nd bleaching clay dosage 3%, bleaching time 15 minutes, bleaching temperature 85 DEG C, vacuum tightness 0.08MPa;
(4) depickling: by the Rice pollard oil processed through step (3) temperature be 22 ~ 28 DEG C, under stirring velocity is the condition of 60 ~ 80r/min, adding mass concentration is 11% sodium hydroxide solution, after alkali refining 25-35min, centrifugation; Or the Rice pollard oil that will process through step (3), be that 10:1 adds ethanol by ethanol and Rice pollard oil volume proportion, at room temperature extract, extracted rear separatory, then distilled, removed residual solvent;
(5) deodorization: vacuum water steaming deodorization, vacuum tightness 0.08MPa, temperature 180 DEG C, 1.5 hours time.
The technical scheme that the present invention limits further is:
Further, aforesaid refining of crude rice bran oil purifying technique, is characterized in that, in the Rice bran crude oil obtained after filtration, foreign matter content controls below 0.2%.
Aforesaid refining of crude rice bran oil purifying technique, is characterized in that, also comprises and coming unstuck, dewaxing operation between step (1) and step (2), wherein:
To extract gained hair Rice pollard oil through step (1) and be placed in container with agitator, and add the oxalic acid aqueous solution of 20-25%, and stir and be warming up to 62-64 DEG C, standing 1-2h obtains oxalic acid degummed oil; Stirred by oxalic acid degummed oil and be heated to 72 DEG C-75 DEG C, stirring velocity is 60-80r/min, and churning time is 30-40min, filters; In oil-water mixture, add the mass concentration being equivalent to oil-water mixture weight 0.8-1.2% is the calcium chloride solution of 6 ± 0.2%, be then slowly cooled to 14-16 DEG C, speed of cooling is 4-6 DEG C/h, use refrigerated centrifuge centrifugal 20-25min under 6500-7500r/min again, must come unstuck, dewax Rice pollard oil.
Aforesaid refining of crude rice bran oil purifying technique, it is characterized in that, in step (4), by the Rice pollard oil processed through step (3) temperature be 24 DEG C, under stirring velocity is the condition of 70r/min, adding mass concentration is 11% sodium hydroxide solution, after alkali refining 30min, centrifugation; Or the Rice pollard oil that will process through step (3), be that 10:1 adds ethanol by ethanol and Rice pollard oil volume proportion, at room temperature extract, extracted rear separatory, then distilled, removed residual solvent.
The invention has the beneficial effects as follows:
A kind of refining of crude rice bran oil purifying technique designed by the present invention, this explained hereafter energy consumption is low, oil yield is high, and the Rice pollard oil of good decolorizing effect, Rice pollard oil carry out impurity treatment in production process, reduces the content of well cuts further, improves the quality of oil.
Embodiment
embodiment 1
A kind of refining of crude rice bran oil purifying technique that the present embodiment provides, comprises following concrete steps:
(1) through rice bran degree of grinding 50 order, the water content 7% of wet method puffing, add leaching solvent Virahol by solid-liquid ratio 1: 5 (W/V), pH value is 6.4-6.6; Add the papoid that quality is rice bran 0.1-0.12%, the water of 8-12 times amount, stirs simultaneously; Extraction time is 4-8h;
(2) refining: alkali refining initial temperature 45 DEG C, KOH concentration 18.5%, excess alkali quantity 0.4%, and filter, in the Rice bran crude oil obtained after filtration, foreign matter content controls below 0.2%;
Also comprise between step (1) and step (2) and coming unstuck, dewaxing operation, wherein:
To extract gained hair Rice pollard oil through step (1) and be placed in container with agitator, and add the oxalic acid aqueous solution of 20-25%, and stir and be warming up to 62-64 DEG C, standing 1-2h obtains oxalic acid degummed oil; Stirred by oxalic acid degummed oil and be heated to 72 DEG C-75 DEG C, stirring velocity is 60-80r/min, and churning time is 30-40min, filters; In oil-water mixture, add the mass concentration being equivalent to oil-water mixture weight 0.8-1.2% is the calcium chloride solution of 6 ± 0.2%, be then slowly cooled to 14-16 DEG C, speed of cooling is 4-6 DEG C/h, use refrigerated centrifuge centrifugal 20-25min under 6500-7500r/min again, must come unstuck, dewax Rice pollard oil.
(3) decolour: adopt secondary decolourization technique, the 1st active bleaching clay dosage 4%, bleaching time 30 minutes, bleaching temperature 90 DEG C; 2nd bleaching clay dosage 3%, bleaching time 15 minutes, bleaching temperature 85 DEG C, vacuum tightness 0.08MPa;
(4) depickling: by the Rice pollard oil processed through step (3) temperature be 22 ~ 28 DEG C, under stirring velocity is the condition of 60 ~ 80r/min, adding mass concentration is 11% sodium hydroxide solution, after alkali refining 25-35min, centrifugation; Or the Rice pollard oil that will process through step (3), be that 10:1 adds ethanol by ethanol and Rice pollard oil volume proportion, at room temperature extract, extracted rear separatory, then distilled, removed residual solvent;
(5) deodorization: vacuum water steaming deodorization, vacuum tightness 0.08MPa, temperature 180 DEG C, 1.5 hours time.
embodiment 2
A kind of refining of crude rice bran oil purifying technique that the present embodiment provides, comprises following concrete steps:
(1) through rice bran degree of grinding 50 order, the water content 7% of wet method puffing, add leaching solvent Virahol by solid-liquid ratio 1: 5 (W/V), pH value is 6.4-6.6; Add the papoid that quality is rice bran 0.1-0.12%, the water of 8-12 times amount, stirs simultaneously; Extraction time is 4-8h;
(2) refining: alkali refining initial temperature 45 DEG C, KOH concentration 18.5%, excess alkali quantity 0.4%, and filter, in the Rice bran crude oil obtained after filtration, foreign matter content controls below 0.2%;
Also comprise between step (1) and step (2) and coming unstuck, dewaxing operation, wherein:
To extract gained hair Rice pollard oil through step (1) and be placed in container with agitator, and add the oxalic acid aqueous solution of 20-25%, and stir and be warming up to 62-64 DEG C, standing 1-2h obtains oxalic acid degummed oil; Stirred by oxalic acid degummed oil and be heated to 72 DEG C-75 DEG C, stirring velocity is 60-80r/min, and churning time is 30-40min, filters; In oil-water mixture, add the mass concentration being equivalent to oil-water mixture weight 0.8-1.2% is the calcium chloride solution of 6 ± 0.2%, be then slowly cooled to 14-16 DEG C, speed of cooling is 4-6 DEG C/h, use refrigerated centrifuge centrifugal 20-25min under 6500-7500r/min again, must come unstuck, dewax Rice pollard oil.
(3) decolour: adopt secondary decolourization technique, the 1st active bleaching clay dosage 4%, bleaching time 30 minutes, bleaching temperature 90 DEG C; 2nd bleaching clay dosage 3%, bleaching time 15 minutes, bleaching temperature 85 DEG C, vacuum tightness 0.08MPa;
(4) depickling: by the Rice pollard oil processed through step (3) temperature be 24 DEG C, under stirring velocity is the condition of 70r/min, adding mass concentration is 11% sodium hydroxide solution, after alkali refining 30min, centrifugation; Or the Rice pollard oil that will process through step (3), be that 10:1 adds ethanol by ethanol and Rice pollard oil volume proportion, at room temperature extract, extracted rear separatory, then distilled, removed residual solvent;
(5) deodorization: vacuum water steaming deodorization, vacuum tightness 0.08MPa, temperature 180 DEG C, 1.5 hours time.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (4)
1. a refining of crude rice bran oil purifying technique, is characterized in that, comprises following concrete steps:
(1) through rice bran degree of grinding 50 order, the water content 7% of wet method puffing, add leaching solvent Virahol by solid-liquid ratio 1: 5 (W/V), pH value is 6.4-6.6; Add the papoid that quality is rice bran 0.1-0.12%, the water of 8-12 times amount, stirs simultaneously; Extraction time is 4-8h;
(2) refining: alkali refining initial temperature 45 DEG C, KOH concentration 18.5%, excess alkali quantity 0.4%, and filter;
(3) decolour: adopt secondary decolourization technique, the 1st active bleaching clay dosage 4%, bleaching time 30 minutes, bleaching temperature 90 DEG C; 2nd bleaching clay dosage 3%, bleaching time 15 minutes, bleaching temperature 85 DEG C, vacuum tightness 0.08MPa;
(4) depickling: by the Rice pollard oil processed through step (3) temperature be 22 ~ 28 DEG C, under stirring velocity is the condition of 60 ~ 80r/min, adding mass concentration is 11% sodium hydroxide solution, after alkali refining 25-35min, centrifugation; Or the Rice pollard oil that will process through step (3), be that 10:1 adds ethanol by ethanol and Rice pollard oil volume proportion, at room temperature extract, extracted rear separatory, then distilled, removed residual solvent;
(5) deodorization: vacuum water steaming deodorization, vacuum tightness 0.08MPa, temperature 180 DEG C, 1.5 hours time.
2. refining of crude rice bran oil purifying technique according to claim 1, is characterized in that, in the Rice bran crude oil obtained after filtration, foreign matter content controls below 0.2%.
3. refining of crude rice bran oil purifying technique according to claim 1, is characterized in that, also comprises and coming unstuck, dewaxing operation between step (1) and step (2), wherein:
To extract gained hair Rice pollard oil through step (1) and be placed in container with agitator, and add the oxalic acid aqueous solution of 20-25%, and stir and be warming up to 62-64 DEG C, standing 1-2h obtains oxalic acid degummed oil; Stirred by oxalic acid degummed oil and be heated to 72 DEG C-75 DEG C, stirring velocity is 60-80r/min, and churning time is 30-40min, filters; In oil-water mixture, add the mass concentration being equivalent to oil-water mixture weight 0.8-1.2% is the calcium chloride solution of 6 ± 0.2%, be then slowly cooled to 14-16 DEG C, speed of cooling is 4-6 DEG C/h, use refrigerated centrifuge centrifugal 20-25min under 6500-7500r/min again, must come unstuck, dewax Rice pollard oil.
4. refining of crude rice bran oil purifying technique according to claim 1, it is characterized in that, in step (4), by the Rice pollard oil processed through step (3) temperature be 24 DEG C, under stirring velocity is the condition of 70r/min, adding mass concentration is 11% sodium hydroxide solution, after alkali refining 30min, centrifugation; Or the Rice pollard oil that will process through step (3), be that 10:1 adds ethanol by ethanol and Rice pollard oil volume proportion, at room temperature extract, extracted rear separatory, then distilled, removed residual solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410411622.3A CN105368572A (en) | 2014-08-21 | 2014-08-21 | Rice bran oil refining purification processes |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410411622.3A CN105368572A (en) | 2014-08-21 | 2014-08-21 | Rice bran oil refining purification processes |
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| CN105368572A true CN105368572A (en) | 2016-03-02 |
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| CN201410411622.3A Pending CN105368572A (en) | 2014-08-21 | 2014-08-21 | Rice bran oil refining purification processes |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861145A (en) * | 2016-06-15 | 2016-08-17 | 高安市清河油脂有限公司 | Refining process for rice bran oil |
| CN106929139A (en) * | 2017-02-27 | 2017-07-07 | 张晓娟 | A kind of high-quality rice bran oil |
| CN107267285A (en) * | 2017-08-14 | 2017-10-20 | 宿松县春江粮油有限公司 | A kind of Rice oil alkali-refining deacidification method of utilization oxalic acid auxiliary degumming |
| CN107574013A (en) * | 2016-07-04 | 2018-01-12 | 吴忠市兴达粮油有限公司 | A kind of cottonseed oil refinement detoxification extraction process |
| CN118516176A (en) * | 2024-06-13 | 2024-08-20 | 江苏得乐康生物科技有限公司 | Purification process for refining crude rice bran oil |
| CN119193233A (en) * | 2024-09-19 | 2024-12-27 | 山东省农业科学院 | A water-saving method for pre-refining crude vegetable oil |
-
2014
- 2014-08-21 CN CN201410411622.3A patent/CN105368572A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861145A (en) * | 2016-06-15 | 2016-08-17 | 高安市清河油脂有限公司 | Refining process for rice bran oil |
| CN107574013A (en) * | 2016-07-04 | 2018-01-12 | 吴忠市兴达粮油有限公司 | A kind of cottonseed oil refinement detoxification extraction process |
| CN106929139A (en) * | 2017-02-27 | 2017-07-07 | 张晓娟 | A kind of high-quality rice bran oil |
| CN107267285A (en) * | 2017-08-14 | 2017-10-20 | 宿松县春江粮油有限公司 | A kind of Rice oil alkali-refining deacidification method of utilization oxalic acid auxiliary degumming |
| CN118516176A (en) * | 2024-06-13 | 2024-08-20 | 江苏得乐康生物科技有限公司 | Purification process for refining crude rice bran oil |
| CN119193233A (en) * | 2024-09-19 | 2024-12-27 | 山东省农业科学院 | A water-saving method for pre-refining crude vegetable oil |
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