CN104530118A - Method for extracting phytic acid from rice bran - Google Patents
Method for extracting phytic acid from rice bran Download PDFInfo
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- CN104530118A CN104530118A CN201510012451.1A CN201510012451A CN104530118A CN 104530118 A CN104530118 A CN 104530118A CN 201510012451 A CN201510012451 A CN 201510012451A CN 104530118 A CN104530118 A CN 104530118A
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- phytic acid
- rice bran
- phytin
- resin
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Abstract
The invention relates to a method for extracting phytic acid from rice bran. The method comprises the steps that (1) digestion is carried out on smashed rice bran through an HC1 solution of 0.1 mol/L and liquid supernatant is reserved; (2) phytic acid calcium pulp, namely phytine is obtained; (3) the phytine is washed; (4) the washed phytine is acidized; (5) ion exchange is carried out on acidizing fluid to obtain a purified phytic acid extracting solution; (6) finally a finished phytic acid product is obtained by concentration. By means of the method, the phytic acid extracting rate of the rice bran is high, the work time is short, and the product quality and color are good. The method has the advantages of being environmentally friendly, saving time, being easy and convenient to operate, and the like, and is suitable for extraction process conditions of industrial production.
Description
Technical field
The invention belongs to rice bran extract technical field, especially a kind of method extracting phytic acid from rice bran.
Background technology
Along with national economy and social development; water technology development for the purpose of resources conservation and environment protection is very fast; research institution both domestic and external mostly concentrates in the research and development to novel environmental friendly water treatment corrosion inhibitors to the research of inhibiter; there is a kind of green corrosion inhibitor in recent years---the research of phytic acid has caused interest both domestic and external; its relevant researchdevelopment is also very fast, and Application Areas and scope also constantly expand.
Rice bran is a kind of cheapness but nutritious Rice producing byproduct, a kind of organic phosphoric acid compound can be extracted in rice bran---phytic acid, phytic acid is a kind of extremely rare metal chelator, when easily forming multiple chelate ring with during metal complex, the complex compound formed all has extremely strong stability within the scope of pH widely.In phytate molecule structure, 6 phosphonos are in the same plane, therefore phytic acid in metallic surface with metal complex time, easily form the unit molecule organic protective film of one deck densification, can effectively stop oxygen etc. to enter metallic surface, thus suppress corrosion of metal.It is natural Non-toxic chemical product, is more promising green corrosion inhibitor product.The widespread use of phytic acid in metal protection process, can increase substantially quality product, reduces and is produced into wood, reduces environmental pollution, produces certain economic benefit and social benefit.
Research shows that phytic acid and salt thereof commonly use inhibiter benzothiazole and the more effective copper corrosion hold back agent of derivative thereof than copper material, when to being that when adding a certain amount of phytic acid in the recirculated cooling water of 60 DEG C, its corrosion potential just can become suddenly and effectively can stop the corrosion of copper containing 3mg/L Cl-, temperature.
Although the research that phytic acid is much extracted in the research of the operational path and processing condition that extract phytic acid from rice bran from rice bran is mature on the whole, due to traditional technology, adopt Acid leaching extraction yield low, man-hour is long, and product quality, color and luster are not so good.So be necessary to explore environmental protection, save time, easy and simple to handle, the extracting factor that is suitable for suitability for industrialized production.In addition, rice bran utilization abroad, progressively adopts biotechnology, and China's rice bran comprehensive utilization still belongs to the primary stage.Rice bran is a kind of huge renewable resources of China, has good development prospect, if utilize proper, will produce immeasurable economic benefit.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of method extracting phytic acid from rice bran is provided.
The present invention solves its technical problem and takes following technical scheme to realize:
From rice bran, extract a method for phytic acid, comprise step as follows:
(1) rice bran after pulverizing, with the HCl solution lixiviate of 0.1mol/L, solid-liquid ratio is 1:8, lixiviate 2 hours, then stirs 2 hours, carries out microwave treatment 3min, then carry out centrifugal settling to liquid after stirring, retains supernatant liquor;
(2) filtrate first used the Ca of 10% (OH) 2 to be transferred to PH=4.0, then adjust 7.0≤PH≤9.0 with the NaOH of 1mol/L, obtain the turbid liquid of adularescent precipitation in beige, then stir well-balanced, carry out centrifugal settling, until sedimentation is complete, obtain phytic acid ca soup compound, i.e. Phytin;
(3) Phytin is washed, first with the NaOH of 1mol/L, Phytin is washed, then carry out supersound process 5min, repetitive operation 3 times, then with de-mineralized water washing to neutral;
(4) acidifying is carried out to the Phytin after washing, PH=3.5-4.0 washed by positive resin desalination, after being filtered dry water by funnel, in a Phytins of ratio i.e. two parts of resins of 2:1, first put resin, after put Phytin, PH=1.5 is surveyed with precision test paper, in beaker static 2 hours, then filter, filtrate was acidizing fluid;
(5) carry out ion-exchange to acidizing fluid, ion-exchange is by two positive posts, and a cloudy post forms, with de-mineralized water, drip washing is carried out to the resin in resin column, make positive post water outlet pH=3.5-4.0, cloudy post water outlet pH=7.0-8.0, then stops drip washing, under resin column, water outlet passes into acidizing fluid after draining off, and coutroi velocity is between 50-60ml/min, first through two positive posts, then pass through cloudy post, collect with narrow-mouthed bottle, namely obtain the phytic acid extracting solution after purifying;
(6) the concentrated phytic acid extracting solution obtained, after the gac adding 1% in phytic acid extracting solution stirs, with the filter paper filtering of middling speed, by active carbon filtration out, the phytic acid leached carries out secondary decolourization, then uses the activated carbon decolorizing of 1%, filter, finally make phytic acid finished product.
And the power of microwave treatment is 100W in described step (1).
And, survey with precision test paper in described step (4) in the process of PH=1.5, if basicity is too high, then increase the amount of resin, if basicity is on the low side, surveys and add Phytin.
And temperature controls below 60 DEG C in the engineering of the concentrated phytic acid extracting solution obtained of described step (6).
Advantage of the present invention and positively effect are:
From rice bran, extract that phytic acid extraction yield is high, man-hour is short by the method, product quality and color and luster good.The method has environmental protection, saves time, the advantage such as easy and simple to handle, is suitable for the extracting factor of suitability for industrialized production.
Embodiment
Be further described the invention process below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
From rice bran, extract a method for phytic acid, comprise step as follows:
(1) rice bran after pulverizing, with the HCl solution lixiviate of 0.1mol/L, solid-liquid ratio is 1:8, lixiviate 2 hours, then stirs 2 hours, carries out microwave treatment 3min after stirring, microwave power is 100W, then carries out centrifugal settling to the liquid of beige, and retains supernatant liquor.
2) filtrate first used the Ca of 10% (OH) 2 to be transferred to PH=4.0, then adjust 7.0≤PH≤9.0 with the NaOH of 1mol/L, obtain the turbid liquid of adularescent precipitation in beige, then stir well-balanced, carry out centrifugal settling, until sedimentation is complete, obtain phytic acid ca soup compound, i.e. Phytin.
3) Phytin is washed, first with the NaOH of 1mol/L, Phytin is washed, then carry out supersound process 5min, repetitive operation 3 times, then with de-mineralized water washing to neutral.
4) carry out acidifying to the Phytin after washing, PH=3.5-4.0 washed by positive resin desalination, after being filtered dry water by funnel, in a Phytins of ratio i.e. two parts of resins of 2:1, first put resin, after put Phytin, PH=1.5 is surveyed with precision test paper, as basicity is too high, increase the amount of resin, if basicity is on the low side, add Phytin, in beaker static 2 hours, then filter, filtrate was acidizing fluid.
5) ion-exchange is carried out to acidizing fluid, ion-exchange is by two positive posts, a cloudy post composition, with de-mineralized water in resin column resin (with acid or alkali regenerated) carry out drip washing, make positive post water outlet pH=3.5-4.0, cloudy post water outlet pH=7.0-8.0, then drip washing is stopped, after under resin column, water outlet drains off, (resin not dry bed when) passes into acidizing fluid, and coutroi velocity is between 50-60ml/min, first through two positive posts, pass through cloudy post again, collect with narrow-mouthed bottle, namely obtain purer phytic acid extracting solution, narrow-mouthed bottle label label.
6) the concentrated phytic acid extracting solution obtained, after the gac adding 1% in phytic acid extracting solution stirs, with the filter paper filtering of middling speed, by active carbon filtration out, the phytic acid leached carries out secondary decolourization, and temperature controls below 60 DEG C, then uses the activated carbon decolorizing of 1%, filter, finally make phytic acid finished product.
Claims (4)
1. from rice bran, extract a method for phytic acid, it is characterized in that comprising step as follows:
(1) rice bran after pulverizing, with the HCl solution lixiviate of 0.1mol/L, solid-liquid ratio is 1:8, lixiviate 2 hours, then stirs 2 hours, carries out microwave treatment 3min, then carry out centrifugal settling to liquid after stirring, retains supernatant liquor;
(2) filtrate first used the Ca of 10% (OH) 2 to be transferred to PH=4.0, then adjust 7.0≤PH≤9.0 with the NaOH of 1mol/L, obtain the turbid liquid of adularescent precipitation in beige, then stir well-balanced, carry out centrifugal settling, until sedimentation is complete, obtain phytic acid ca soup compound, i.e. Phytin;
(3) Phytin is washed, first with the NaOH of 1mol/L, Phytin is washed, then carry out supersound process 5min, repetitive operation 3 times, then with de-mineralized water washing to neutral;
(4) acidifying is carried out to the Phytin after washing, PH=3.5-4.0 washed by positive resin desalination, after being filtered dry water by funnel, in a Phytins of ratio i.e. two parts of resins of 2:1, first put resin, after put Phytin, PH=1.5 is surveyed with precision test paper, in beaker static 2 hours, then filter, filtrate was acidizing fluid;
(5) carry out ion-exchange to acidizing fluid, ion-exchange is by two positive posts, and a cloudy post forms, with de-mineralized water, drip washing is carried out to the resin in resin column, make positive post water outlet pH=3.5-4.0, cloudy post water outlet pH=7.0-8.0, then stops drip washing, under resin column, water outlet passes into acidizing fluid after draining off, and coutroi velocity is between 50-60ml/min, first through two positive posts, then pass through cloudy post, collect with narrow-mouthed bottle, namely obtain the phytic acid extracting solution after purifying;
(6) the concentrated phytic acid extracting solution obtained, after the gac adding 1% in phytic acid extracting solution stirs, with the filter paper filtering of middling speed, by active carbon filtration out, the phytic acid leached carries out secondary decolourization, then uses the activated carbon decolorizing of 1%, filter, finally make phytic acid finished product.
2. the method extracting phytic acid from rice bran according to claim 1, is characterized in that: in described step (1), the power of microwave treatment is 100W.
3. the method extracting phytic acid from rice bran according to claim 1, is characterized in that: survey with precision test paper in described step (4) in the process of PH=1.5, if basicity is too high, then increase the amount of resin, if basicity is on the low side, surveys and adds Phytin.
4. the method extracting phytic acid from rice bran according to claim 1, is characterized in that: in the engineering of the concentrated phytic acid extracting solution obtained of described step (6), temperature controls below 60 DEG C.
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| CN201510012451.1A CN104530118A (en) | 2015-01-12 | 2015-01-12 | Method for extracting phytic acid from rice bran |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114369116A (en) * | 2021-12-22 | 2022-04-19 | 厦门世达膜科技有限公司 | Method for extracting high-purity phytic acid |
Citations (6)
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| CA2310288A1 (en) * | 2000-04-14 | 2001-11-30 | Protein Technologies International, Inc. | Treatment of plant protein extract by ion exchange to remove phytic acid and phytates |
| CN1417215A (en) * | 2001-11-01 | 2003-05-14 | 赵明阳 | Process of extracting phytic acid from plant shell |
| CN101205238A (en) * | 2007-11-21 | 2008-06-25 | 上海应用技术学院 | Extraction method of phytic acid in rice bran |
| CN102127108A (en) * | 2010-12-08 | 2011-07-20 | 东北电力大学 | Method for extracting phytic acid from rice bran |
| CN102206231A (en) * | 2010-03-31 | 2011-10-05 | 杜江 | Method for producing liquid phytic acid |
| CN103214512A (en) * | 2013-04-22 | 2013-07-24 | 江南大学 | Technology for preparing high-purity phytic acid with membrane technology by taking defatted rice bran as raw material |
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- 2015-01-12 CN CN201510012451.1A patent/CN104530118A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2310288A1 (en) * | 2000-04-14 | 2001-11-30 | Protein Technologies International, Inc. | Treatment of plant protein extract by ion exchange to remove phytic acid and phytates |
| CN1417215A (en) * | 2001-11-01 | 2003-05-14 | 赵明阳 | Process of extracting phytic acid from plant shell |
| CN101205238A (en) * | 2007-11-21 | 2008-06-25 | 上海应用技术学院 | Extraction method of phytic acid in rice bran |
| CN102206231A (en) * | 2010-03-31 | 2011-10-05 | 杜江 | Method for producing liquid phytic acid |
| CN102127108A (en) * | 2010-12-08 | 2011-07-20 | 东北电力大学 | Method for extracting phytic acid from rice bran |
| CN103214512A (en) * | 2013-04-22 | 2013-07-24 | 江南大学 | Technology for preparing high-purity phytic acid with membrane technology by taking defatted rice bran as raw material |
Non-Patent Citations (3)
| Title |
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| 戴传波等: "植酸制取的研究进展", 《食品工业科技》, vol. 28, no. 2, 25 February 2007 (2007-02-25), pages 239 - 241 * |
| 滕业方等: "从米糠中制取植酸的工艺研究现状及其进展", 《广州化学》, vol. 30, no. 3, 30 September 2005 (2005-09-30) * |
| 肖传豪等: "米糠制植酸的工艺研究和进展", 《化工时刊》, vol. 23, no. 8, 25 August 2009 (2009-08-25), pages 57 - 59 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114369116A (en) * | 2021-12-22 | 2022-04-19 | 厦门世达膜科技有限公司 | Method for extracting high-purity phytic acid |
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Application publication date: 20150422 |