CN103250973A - Industrialized pretreatment method of high-temperature rice bran meal - Google Patents
Industrialized pretreatment method of high-temperature rice bran meal Download PDFInfo
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- CN103250973A CN103250973A CN2013101381970A CN201310138197A CN103250973A CN 103250973 A CN103250973 A CN 103250973A CN 2013101381970 A CN2013101381970 A CN 2013101381970A CN 201310138197 A CN201310138197 A CN 201310138197A CN 103250973 A CN103250973 A CN 103250973A
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Abstract
The invention aims to solve the problem of difficulty in filtration due to starch pasting when components such as phytic acid and dietary fiber in rice bran meal subjected to high-temperature extrusion stabilization and solvent method deoiling are industrially separated, amylodextrin is degraded at a low temperature by adopting amylase, and thus the filter characteristic of the defatted rice bran meal is improved; and on the basis, the phytic acid and the dietary fiber in the rice bran meal can be continuously separated. The main characteristic is that high-viscosity rice bran dextrin is degraded at a temperature of less than the rice bran starch pasting temperature by adopting a medium-temperature or high-temperature alpha amylase, and the situation that filter cloth is blocked in a subsequent separating process to seriously influence the whole separation process can be avoided on the premise that the rice bran starch is not excessively degraded.
Description
Technical field
A kind of industrialization pre-treating method of high temperature rice bran meal belongs to agricultural byproducts deep processing field.
Background technology
Rice bran is the main byproduct of paddy processing, the rice bran that China's annual processing paddy produces is more than 1,000 ten thousand tons, be a kind of a large amount of wide renewable resource, containing nutritional labelings such as abundant grease, multiple high-quality protein, food fiber, mineral element and B family vitamin in the rice bran, also is a kind of nutritive value food with high resource therefore.
Fat content is about 15% in the rice bran, for alleviating the under-supply problem of China's edible oil, rice bran also is used as oil plant originates to extract oil, and the rice bran oil that makes is also referred to as rice oil, better because of its high-temperature stability, unsaturated fatty acid content is abundant and be subjected to extensive concern.But different with other oil plants is, contain active higher lipase in the rice bran, as deal with improperly, very easily cause becoming sour of rice bran, have influence on yield and the quality of grease, therefore, before rice bran to prepare oil, usually the technology that adopts high temperature to push stabilisation is come the lipase in the deactivation rice bran, to obtain higher oil yield and lower acid value.But high temperature extruding stabilisation is to the influence of rice bran, emphasis shows the gelatinization of rice bran starch under the condition of high temperature, report according to document (1), the extruding of rice bran high temperature is gone out behind the enzyme, the gelatinization degree of starch can reach more than 90%, so the starch of part gelatinization can not be removed in follow-up technology, then can cause filtration to have a strong impact on.Document (1): Xu Shu comes. and extrusion process is to the research of rice bran main nutrient composition influence. Chinese grain and oil journal .Vol22 (3): 12-16,2007.
Rice bran is used to extract phytate and dietary fiber is very general, relevant patent application report is also arranged, preparation method (200610026913.6) as a kind of defatted rice bran dietary fiber, utilize the defatted rice bran coproduction to prepare method (201110102062.X) of rice bran dietary fiber and rice bran protein etc., but these researchs and patent report are all pressed without too high warm extrusion based on raw rice bran and are handled, starch still is in the state of natural ungelatinized, after being added in the aqueous solution, can not produce the situation that viscosity increases, in follow-up extraction separation process, filtration resistance is less.Along with the generally employing of rice bran high temperature extruding stabilization technology, the problem of starch gelatinization becomes subsequent component and separates in the high temperature rice bran meal, causes separation difficulty when particularly adopting solution to extract the rice bran component, when serious, can cause filter pressure too big and spray is leaked.
Summary of the invention
The invention provides a kind of industrialization pre-treating method of high temperature rice bran meal, solved the filtration difficulty problem that the high temperature defatted rice bran dregs of rice bring in extracting component processes such as separating phytate, dietary fiber, by the amylase rice bran dextrin of selectively degrading, when improving high temperature rice bran meal filtering feature, not amyloplastic a large amount of hydrolysis and reduce the industrial use of rice bran meal separate for the subsequent component of high temperature rice bran meal and lay a good foundation.
Technical scheme of the present invention: a kind of industrialization pre-treating method of high temperature rice bran meal, it is characterized in that utilizing the degraded of amylase appropriateness to have full-bodied dextrin, through the industrial treatment checking effectively, rice bran dextrin through the appropriateness degraded, Separation of Solid and Liquid in the time of can not extracting follow-up rice bran component impacts, thereby has guaranteed the continuity of producing.
Technical characterstic of the present invention is by middle temperature or high temperature liquefaction type amylase, the amylodextrin of the gelatinization of hydrolysis at a lower temperature, full-bodied amylodextrin particularly, reduce its influence to filtering, adopt the dextrin liquefaction under the low-temperature condition, though when amylase activity only maintains the best use of temperature about 30% of activity, can reduce the high viscosity dextrin to the obstruction of filter cloth.Behind this preprocessing process, content of starch is still at more than 95% of raw material rice bran meal content of starch in the filter residue: processing step is as follows:
(1) through the extruding stabilisation, rice bran meal after the solvent lixiviate de-oiling, with 1: 8-1: 10 water is sized mixing, middle temperature or alpha-amylase according to the 10-30U/g of raw material rice bran meal weight, after stirring, quickly heat up to 30-45 ℃ with live (open) steam, kept under the speed of agitator 80-200rpm mechanical agitation 10-20 minute.
(2) above-mentioned raw materials pumps into retort or reaction tank immediately, with being used for extracting phytic acid behind the acidulant adjusting pH.
(3) the acidic extraction liquid of phytic acid adopts filter press to carry out Separation of Solid and Liquid, filter pressure＜8Kg/cm
2
(4) filter residue is washed with water after, obtain the rice bran meal of protein content higher (＞20%), starch loss late＜5%.
(5) filter residue in the step (4) is delivered to blend tank with auger, regulates behind the pH with amylase and protease degrade fully rice bran starch and protein, the rice bran diet fiber product of acquisition content of ashes＜2%.
(6) filter residue in the step (4) is delivered to blend tank with auger, can extract rice bran protein behind the adjusting pH, preparation rice bran protein product after separating.
Following table is that different pre-treatment conditions are to the influence of rice bran meal strainability
Beneficial effect of the present invention: the characteristics that the present invention is directed to the gelatinization of high temperature rice bran meal starch, can be owing to the high viscosity dextrin blocks filter medium when component is separated, cause filter pressure to increase sharply, adopt amylase hydrolysis high viscosity dextrin under low-temperature condition, make the rice bran meal extract have good filtering feature, and because amylase palliating degradation degree to starch under low-temperature condition is limited, can control loss late that starch causes because of degraded below 5%.High temperature rice bran meal through the method is handled can carry out separation and the extraction of components such as phytic acid, protein, dietary fiber smoothly, for deep development and the utilization of high temperature extrusion process rice bran meal lays the foundation.
Description of drawings
Fig. 1The pretreated component separation process scheme of high temperature rice bran meal.
The specific embodiment
Embodiment 1: get high temperature rice bran meal 100Kg, concentration according to 1: 8 (w/v) is sized mixing, and adding 100mL high temperature alpha amylase (20,000U/mL) be mixed, transfer the slurry back to feed steam and directly be heated to 40 ℃, under the 100rpm rotating speed, stir 15min, squeeze into extractor with underflow pump, regulate pH2.0 with HCl, carry out phytate and extract separation, extract the end back and separate with filter press, filter residue is delivered to extractor with auger, extracts protein or dietary fiber behind the adjusting pH.
Embodiment 2: get high temperature rice bran meal 100Kg, concentration according to 1: 10 (w/v) is sized mixing, and warm alpha amylase among the adding 50mL (20,000U/mL) be mixed, transfer the slurry back to feed steam and directly be heated to 40 ℃, under the 100rpm rotating speed, stir 20min, squeeze into extractor with underflow pump, regulate pH2.0 with HCl, carry out phytate and extract separation, extract the end back and separate with filter press, filter residue is delivered to extractor with auger, extracts protein or dietary fiber behind the adjusting pH.
Embodiment 3: get high temperature rice bran meal 100Kg, concentration according to 1: 8 (w/v) is sized mixing, and adding 50mL high temperature alpha amylase (20,000U/mL) be mixed, transfer the slurry back to feed steam and directly be heated to 40 ℃, under the 100rpm rotating speed, stir 20min, squeeze into extractor with underflow pump, regulate pH2.0 with HCl, carry out phytate and extract separation, extract the end back and separate with filter press, filter residue is delivered to extractor with auger, extracts protein or dietary fiber behind the adjusting pH.
Claims (2)
1. the present invention is especially at the rice bran that adopts the processing of high temperature extruding stabilization process, and the rice bran meal that obtains after the solvent method de-oiling carries out the pre-treating method of industrialization component consecutive hours.It is characterized in that, select suitable amylase liquefaction condition, slight degraded can cause the rice bran dextrin owing to high temperature extruding generation of filtration difficulty, can separate rice bran phytic acid and rice bran dietary fiber continuously on this basis, improved rice bran because the starch gelatinization that the high temperature extruding causes influences follow-up separation-extraction technology, concrete steps comprise:
(1) rice bran meal of, solvent method de-oiling stable through pushing, water furnishing suspension, add amylase after, adopt Steam Heating, be rapidly heated to 30-50 ℃, control is changeed and is stirred rotating speed 40-100 rev/min, hydrolysis time is no more than 20min, pumps into retort,
(2) follow-up extraction separation is primarily aimed at separating of rice bran phytic acid and dietary fiber, concrete steps comprise with acidulant regulates pH to 1.5-3.0, extract and to carry out Separation of Solid and Liquid behind the phytate and obtain the phytic acid leaching liquor, solid slag is regulated pH to 5.0-6.0 with alkali, add amylase again after, be warming up to 80-95 ℃, enzymolysis 30-60min is cooled to 40-60 ℃, adds neutral proteinase, continue to carry out Separation of Solid and Liquid behind the hydrolysis 2-5h, the residue drying obtains the rice bran dietary fiber.
2. pre-treating method is extracted in a kind of industrialization through high temperature extruding defatting rice bran meal according to claim 1, it is characterized in that: the starch that adopts the gelatinization of amylase in 30-50 ℃ of hydrolysis extruding rice bran, make follow-up Separation of Solid and Liquid, particularly adopt the Separation of Solid and Liquid of pressure filtration formula to become simply, can keep pressure and be lower than 8Kg/cm
2Following operation, used amylase is middle temperature or high temperature alpha amylase, the enzyme activity scope is at 20,0000-30, between the 000U/mL.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108208308A (en) * | 2017-10-27 | 2018-06-29 | 中国科学院青岛生物能源与过程研究所 | A kind of method for extracting thermal denaturation rice bran protein |
| CN108864313A (en) * | 2017-05-16 | 2018-11-23 | 罗盖特公司 | Clean the stabilized buckwheat starch of label |
| CN109170498A (en) * | 2018-09-27 | 2019-01-11 | 内蒙古燕谷坊全谷物产业发展有限责任公司 | A kind of Herba bromi japonici dietary fiber powder and its preparation process |
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| CN1560266A (en) * | 2004-03-08 | 2005-01-05 | 江南大学 | Preparation process of rise bran polysaccharose kind active component |
| CN1849931A (en) * | 2006-05-26 | 2006-10-25 | 上海师范大学 | Method for producing defatted rice bran edible fiber |
| CN101058822A (en) * | 2007-05-17 | 2007-10-24 | 中兴能源技术（武汉）有限公司 | Method of extracting rice bran polysaccharide and rice bran protein |
| CN101278712A (en) * | 2008-05-15 | 2008-10-08 | 江苏双兔食品股份有限公司 | Rice bran nutriment and method for separating rice bran nutrition fibre with high-efficiency |
| CN102178151A (en) * | 2011-04-22 | 2011-09-14 | 淮南市楚丰工贸有限公司 | Method for co-producing rice bran dietary fiber and rice bran protein by utilizing defatted rice bran |
| CN102286546A (en) * | 2011-07-18 | 2011-12-21 | 郑州凯乐生物能有限公司 | Rice bran meal comprehensive utilization method |
| CN102356845A (en) * | 2011-10-29 | 2012-02-22 | 安徽燕之坊食品有限公司 | Preparation method of rice bran nutrient |
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2013
- 2013-04-22 CN CN2013101381970A patent/CN103250973A/en active Pending
Patent Citations (7)
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| CN1560266A (en) * | 2004-03-08 | 2005-01-05 | 江南大学 | Preparation process of rise bran polysaccharose kind active component |
| CN1849931A (en) * | 2006-05-26 | 2006-10-25 | 上海师范大学 | Method for producing defatted rice bran edible fiber |
| CN101058822A (en) * | 2007-05-17 | 2007-10-24 | 中兴能源技术（武汉）有限公司 | Method of extracting rice bran polysaccharide and rice bran protein |
| CN101278712A (en) * | 2008-05-15 | 2008-10-08 | 江苏双兔食品股份有限公司 | Rice bran nutriment and method for separating rice bran nutrition fibre with high-efficiency |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864313A (en) * | 2017-05-16 | 2018-11-23 | 罗盖特公司 | Clean the stabilized buckwheat starch of label |
| CN108864313B (en) * | 2017-05-16 | 2021-02-09 | 罗盖特公司 | Buckwheat starch stabilized by cleaning label |
| CN108208308A (en) * | 2017-10-27 | 2018-06-29 | 中国科学院青岛生物能源与过程研究所 | A kind of method for extracting thermal denaturation rice bran protein |
| CN108208308B (en) * | 2017-10-27 | 2021-07-30 | 中国科学院青岛生物能源与过程研究所 | Method for extracting thermal denaturation rice bran protein |
| CN109170498A (en) * | 2018-09-27 | 2019-01-11 | 内蒙古燕谷坊全谷物产业发展有限责任公司 | A kind of Herba bromi japonici dietary fiber powder and its preparation process |
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