CN101619334A - Method for co-producing high-purity rice protein and malt syrup by rice - Google Patents
Method for co-producing high-purity rice protein and malt syrup by rice Download PDFInfo
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- CN101619334A CN101619334A CN200910043625A CN200910043625A CN101619334A CN 101619334 A CN101619334 A CN 101619334A CN 200910043625 A CN200910043625 A CN 200910043625A CN 200910043625 A CN200910043625 A CN 200910043625A CN 101619334 A CN101619334 A CN 101619334A
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Abstract
The invention provides a method for co-producing high-purity rice protein and malt syrup by rice, which comprises the following steps: soaking rice in sodium hydroxide solution, grinding the rice into thick liquid and extracting the rice to obtain supernate, precipitating the supernate to obtain protein glue, washing and drying the protein glue to obtain 80-90 percent of rice protein; soaking the rice in sodium hydroxide, extracting to obtain rice meal, and processing the rice meal by the steps of liquefying, filter-pressing, desalting and ion exchange to obtain the malt syrup. In the production process of the malt syrup, the liquefaction time is 20-60 min shorter than that of the traditional process, the liquefied enzyme using amount is reduced, and a membrane filteration and desalting process is added. The invention takes two products of the malt syrup and the high-purity rice protein with more than 80 percent of protein content as targeted products simultaneously, also improves the preparation process of the malt syrup and ensures the preparation of the malt syrup to achieve the aims of saving the energy and reducing the consumption.
Description
Technical field
The present invention relates to the method for a kind of rice co-producing high-purity rice protein and malt syrup.
Background technology
Existing malt syrup preparation technology is to be raw material with rice or other grain, and cleaning, immersion, defibrination, saccharification, press filtration, liquefaction, ion-exchange obtain, and obtains protein content simultaneously and be about 60% byproduct feed grade rice protein.Above-mentioned technology concrete steps are: (1) is cleaned: pressurized air is eluriated the raw material rice repeatedly, and impurity such as dust, rice bran are floated in overflow, make grain of rice cleaning; (2) soak: clear water soaked rice 1-3 in summer hour, 4-6 hour winter; (3) defibrination: with soaked rice defibrination to the 20-40 order; (4) size mixing: control starch milk massfraction is 28%-32%; (5) liquefaction: adopt steam ejection liquefaction or spray liquefaction with alpha-amylase at the 95-105 degree, be incubated 2-4 hour: (6) press filtration: it is about 60% the feed grade rice protein and the rice dextrin of DE value necessarily that liquefied product obtains protein content through filter press; (7) saccharification: the liquefied product after the press filtration is added saccharifying enzyme at the 50-60 degree, and the pH5.0-5.5 enzymolysis obtained malt syrup in 6-24 hour; (8) decolouring: activated carbon decolorizing; (9) ion-exchange: the zwitterion resin is removed protein residual in the liquid glucose, amino acid, pigment and inorganic salt and is promptly obtained finished product.
Tradition is extracted in the technology of maltose, adopts clear water to soak and extracts rice protein, and its protein content is lower.There are some researches show, rice is soaked in the sodium hydroxide of 0.05N extracted 2 hours, can obviously protein content be increased to more than 90%.(Yi Cuiping, Yao Huiyuan.The separation and Extraction of high purity rice protein and starch.Food and machinery.2004，20，6：18-21)
Existing method is the purpose product with the malt syrup mainly, obtains protein content simultaneously and be about 60% rice protein byproduct.Production time is long, energy consumption is serious, and the maltose productive rate is not high yet, has caused the waste of big content of starting materials simultaneously.
Summary of the invention
For overcoming the deficiency in the existing technology, simplify production technique, the invention provides the method for a kind of rice co-producing high-purity rice protein and malt syrup.May further comprise the steps: with the 0.01-0.1mol/L sodium hydroxide solution immersion 10-60min of rice with 2-10 times of weight; Soak the back defibrination, extracted 1-6 hour in 0-45 ℃; Centrifugal supernatant liquor and the Starch rice of obtaining, supernatant liquor is 6-7 with the hydrochloric acid adjust pH, separates to obtain albumin glue, and albumin glue cleaning, drying are obtained rice protein; Above-mentioned Starch rice is cleaned, and the feed liquid mass percent is by 1: the 2-5 water is sized mixing, and the Ye Huamei that with massfraction is 0.01%-0.1% was in 95-105 ℃ of liquefaction 20-40 minute, press filtration, filtrate membrane filtration desalination, the saccharifying enzyme saccharification, decolorizing with activated carbon is after ion-exchange obtains malt syrup.
Described drying is spraying drying or warm air drying; The described isoelectric precipitation that is separated into separates or centrifugation; Described membrane filtration is a ceramic membrane filter; Described ceramic membrane is a ceramic super-filtering film, and ultra-filtration membrane is a kind of aperture specification unanimity, and specified pore diameter range is the micropore filtering film of 0.001-0.02 micron.
Increased alkali in present method and put forward the technology of separating rice protein, caused the saltiness of Starch rice to increase,, increased the membrane filtration desalinating process, removed the salt of 30%-70% in the liquefied product filtrate for avoiding increasing the desalination burden of zwitterion resin.The preparation of malt syrup mainly is the Starch rice that utilizes in the rice, if there is proteinic existence can increase difficulty in the preparation process in the preparation process; The present invention soaks the back coproduction with rice with alkali and obtains rice protein earlier, reduced the influence of protein to subsequent disposal, therefore can reduce the preparation time of malt syrup, the consumption of minimizing Ye Huamei, simultaneously, utilize rice protein also can obtain a kind of high-quality food grade products in advance.
Method provided by the invention can reduce 1-10% with Ye Huamei consumption in the liquefaction step; Liquefying time shortens greatly, is reduced to 20-40 minute by original 2-4 hour; And introduced " membrane filtration desalinating process " first.Technology of the present invention is to be that two kinds of products of high purity rice protein more than 80% are target product simultaneously with malt syrup and protein content, under the situation that does not change the maltose productive rate, change the preparation technology of malt syrup, make the preparation of malt syrup reach energy saving purposes.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1
1000 gram rice are cleaned, sodium hydroxide solution with 5 liters of 0.05mol/L soaked 0.5 hour, defibrination, 25 ℃ are stirred extraction 2 hours, centrifugal supernatant liquor and the Starch rice of obtaining, supernatant liquor is with hydrochloric acid adjust pH to 6.5, and centrifugation gets that albumin glue cleans, to get protein content be 85% rice protein to spraying drying.Starch rice through clean, to size mixing, add massfraction by 1: 3 (w/v) be that 0.01% Ye Huamei liquefied 20-40 minute in the 95-105 degree to solid-liquid ratio, press filtration, the membrane filtration desalination, filtrate is used the saccharifying enzyme saccharification, activated carbon decolorizing is after ion-exchange obtains malt syrup.
Embodiment 2
5000 gram rice are cleaned, sodium hydroxide solution with 45 liters of 0.09mol/L soaked 15 minutes, defibrination, 30 ℃ are stirred extraction 1 hour, centrifugal supernatant liquor and the Starch rice of obtaining, supernatant liquor is with hydrochloric acid adjust pH to 7, and centrifugation gets that albumin glue cleans, to get protein content be 80% rice protein to spraying drying.Starch rice through clean, to size mixing, add massfraction by 1: 3 (w/v) be that 0.1% Ye Huamei liquefied 20-40 minute in the 95-105 degree to solid-liquid ratio, press filtration, the membrane filtration desalination, filtrate is used the saccharifying enzyme saccharification, activated carbon decolorizing is after ion-exchange obtains malt syrup.
Claims (5)
1, the method for a kind of rice co-producing high-purity rice protein and malt syrup is characterized in that, may further comprise the steps: with the 0.01-0.1mol/L sodium hydroxide solution immersion 10-60min of rice with 2-10 times of weight; Soak the back defibrination, extracted 1-6 hour in 0-45 ℃; Centrifugal supernatant liquor and the Starch rice of obtaining, supernatant liquor is 6-7 with the hydrochloric acid adjust pH, separates to obtain albumin glue, and albumin glue cleaning, drying are obtained rice protein; Above-mentioned Starch rice is cleaned, and the feed liquid mass percent is by 1: the 2-5 water is sized mixing, and the Ye Huamei that with massfraction is 0.01%-0.1% was in 95-105 ℃ of liquefaction 20-40 minute, press filtration, filtrate membrane filtration desalination, the saccharifying enzyme saccharification, decolorizing with activated carbon is after ion-exchange obtains malt syrup.
2, method according to claim 1 is characterized in that, described drying is spraying drying or warm air drying.
3, method according to claim 1 is characterized in that, the described isoelectric precipitation that is separated into separates or centrifugation.
4, method according to claim 1 is characterized in that, described membrane filtration is a ceramic membrane filter.
5, method according to claim 4 is characterized in that, described ceramic membrane is a ceramic super-filtering film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100436255A CN101619334B (en) | 2009-06-08 | 2009-06-08 | Method for co-producing high-purity rice protein and malt syrup by rice |
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| CN2009100436255A CN101619334B (en) | 2009-06-08 | 2009-06-08 | Method for co-producing high-purity rice protein and malt syrup by rice |
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| CN101619334A true CN101619334A (en) | 2010-01-06 |
| CN101619334B CN101619334B (en) | 2012-03-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792782A (en) * | 2010-03-09 | 2010-08-04 | 莆田市荔城区来康家食品有限公司 | Preparation process for producing malt syrup and rice protein from rice-washing water |
| CN102747120A (en) * | 2012-07-18 | 2012-10-24 | 庄晟 | Preparation method of special inverted syrup for moon cakes |
| CN105831390A (en) * | 2016-04-05 | 2016-08-10 | 无锡群硕谷唐生物科技有限公司 | Anthocyanin-rich black rice protein, anthocyanin-rich black rice syrup, and production method of protein and syrup |
| CN113481259A (en) * | 2021-07-13 | 2021-10-08 | 山东省科学院菏泽分院 | Method for extracting starch syrup and rice protein isolate from broken rice |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060084150A1 (en) * | 2004-09-29 | 2006-04-20 | Qunyu Gao | Method for manufacturing maltose-rich products |
-
2009
- 2009-06-08 CN CN2009100436255A patent/CN101619334B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101792782A (en) * | 2010-03-09 | 2010-08-04 | 莆田市荔城区来康家食品有限公司 | Preparation process for producing malt syrup and rice protein from rice-washing water |
| CN102747120A (en) * | 2012-07-18 | 2012-10-24 | 庄晟 | Preparation method of special inverted syrup for moon cakes |
| CN102747120B (en) * | 2012-07-18 | 2014-04-16 | 湖南昕祺生物科技有限责任公司 | Preparation method of special inverted syrup for moon cakes |
| CN105831390A (en) * | 2016-04-05 | 2016-08-10 | 无锡群硕谷唐生物科技有限公司 | Anthocyanin-rich black rice protein, anthocyanin-rich black rice syrup, and production method of protein and syrup |
| CN113481259A (en) * | 2021-07-13 | 2021-10-08 | 山东省科学院菏泽分院 | Method for extracting starch syrup and rice protein isolate from broken rice |
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| CN101619334B (en) | 2012-03-28 |
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