CN102550935A - Method for extracting rice bran nutrients - Google Patents
Method for extracting rice bran nutrients Download PDFInfo
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- CN102550935A CN102550935A CN2012100156542A CN201210015654A CN102550935A CN 102550935 A CN102550935 A CN 102550935A CN 2012100156542 A CN2012100156542 A CN 2012100156542A CN 201210015654 A CN201210015654 A CN 201210015654A CN 102550935 A CN102550935 A CN 102550935A
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Abstract
The invention discloses a method for extracting rich bran nutrients through two stages of CO2 supercritical extraction. With the extraction method provided by the invention, the extraction rate of rich bran nutrients can be increased, and a part of coarse fiber can be converted into soluble dietary fiber. The nutrition constituents in rice bran are furthest utilized, poor taste caused by the coarse fiber can also be avoided, and the method has high industrial value.
Description
Technical field
the invention belongs to food deep processing field, particularly a kind of rice bran nutrients supercritical extraction method.
Background technology
China is the major country of rice cultivation in the world; The output of paddy rice is very high; Yet the rice bran as byproduct in the rice process is not but effectively utilized; Only as oil expression, feed or offal treatment, its economic benefit is also low, has also caused a large amount of environmental pollutions simultaneously.
rice bran is a kind of renewable resource that has remarkable physiological function and high nutritive value and can fully be absorbed by human body.Big quantity research proves that rice bran is the elite place of paddy seed, contains the fat of high-quality; Protein, tocopherol is given birth to three rare phenol; Materials such as r-Hi-Z and dietary fiber have remarkable function aspect the illness regulating the organism physiology function and prevent and treat, and are known as the health-nutrition source of being bestowed by heaven by people.Yet because crude fiber content is too high in the rice bran, directly eating mouth feel is relatively poor, and nutrition content is not high, can not give full play to the effect of nutrient in the rice bran.
therefore, how extracting nutrient in the rice bran is the place that produces the healthy food key.Though the method for much extracting about rice bran nutrients is also arranged in the prior art, and these methods are conceived to the extraction of the part nutriment in the nutrient mostly, the nutriment extraction efficiency is low.Therefore, how to improve the extraction efficiency of rice bran nutrients, the using value of improving rice bran is a problem demanding prompt solution.
Summary of the invention
the object of the invention provides a kind of method for distilling of rice bran nutrients on the one hand, can improve the extraction efficiency of nutrient.In order to realize the object of the invention, intend and adopt following technical scheme:
One aspect of the present invention relates to a kind of method for distilling of rice bran nutrients, it is characterized in that comprising the steps:
(1) rice bran stabilization: fresh rice bran is cleaned with clear water, afterwards rice bran is carried out thermophilic digestion, boiling temperature is 110-150 ℃, and digestion time 20-40 minute, humid heat treatment made the fat oxidation enzyme deactivation of rice bran, and rice bran reaches the purpose of stabilisation;
(2) rice bran hydrolysis: get the rice bran after stablizing; The water that adds its 3-6 times quality; Every 100kg rice bran adds amylase, the protease of 10-30 ten thousand units and the cellulase of 100-200 ten thousand units of 40-80 ten thousand units, mixes the back and is incubated 0.5-2 hour down at 40-80 ℃, and the rice bran after the hydrolysis is through pulverizing pulping; Cross and filter slurries, dry slurries are removed moisture;
(3) one-level extraction: the rice bran hydrolysate of drying is joined CO
2
In the supercritical extract jar; In extractor, feed then and carry agent ethanol and extract; Under 10～60 ℃ of extraction temperature, extracting pressure 0.1～1Mpa condition, extracted 1～10 hour continuously, extract the concentrated solvent that reclaims of product decompression, recovered solvent can also further recycle
(4) secondary extraction: the residue that extracts is joined another CO
2
In the supercritical extract jar, in extractor, feed then and carry agent propane or butane or its combination and extract, the extraction temperature was extracted 1～10 hour under 10～25 ℃ of extraction temperature, extracting pressure 0.1～1Mpa condition continuously, extracted the product decompression and concentrated and reclaim solvent; Mix the product of extracted twice, be drying to obtain rice bran nutrients.
In a preferred implementation of the present invention, described method for distilling comprises that also the rice bran nutrients to being extracted detects
.
in another preferred embodiment of the present invention, the agent of carrying of described secondary extraction is a propane.
in another preferred embodiment of the present invention, the extraction time of described one-level extraction or secondary extraction independently is 2-8 hour, further is preferably 4-6 hour.
the present invention also relate to by the resulting rice bran nutrients of said extracted method on the other hand; Further; The invention still further relates to extract the food that the rice bran nutrients that obtains and other food materials are processed, include but not limited to process drink, biscuit, bread, compressed foods, quick-frozen food etc.
Adopt extraction process of the present invention, have following advantage:
(1) extracting power is strong, and recovery rate is high;
(2) operating temperature is low, and the active ingredient that can preserve in the rice bran is not destroyed more intactly;
(3) extraction time is fast, with short production cycle;
(4) operating parameter is controlled easily, constant product quality;
(5) investment is little, production cost is low;
(6) supercritical fluid source is wide, and price is low, is fit to suitability for industrialized production.
The specific embodiment
Embodiment 1:
(1) rice bran stabilization: fresh rice bran is cleaned with clear water, afterwards rice bran is carried out thermophilic digestion, boiling temperature is controlled between 110-150 ℃, digestion time 30 minutes;
(2) rice bran hydrolysis: get the rice bran after stablizing; The water that adds its 4 times of quality; Every 100kg rice bran adds the amylase of 600,000 units, the protease of 200,000 units and the cellulase of 1,500,000 units, mixes the back and is incubated 1 hour down at 60 ℃, and the rice bran after the hydrolysis is through pulverizing pulping; Cross and filter slurries, dry slurries are removed moisture;
(3) one-level extraction: the rice bran hydrolysate of drying is joined CO
2
In the supercritical extract jar, in extractor, feed then and carry agent ethanol and extract, extracting 5 hours continuously between extraction temperature 30-50 ℃, under extracting pressure 0.5～0.8Mpa condition, extract the product decompression and concentrate and reclaim solvent;
(4) secondary extraction: the residue that extracts is joined another CO
2
In the supercritical extract jar, in extractor, feed then and carry agent propane or butane or its combination and extract, at room temperature extracted 5 hours continuously under extraction, the extracting pressure 0.5～0.8Mpa condition, extract the product decompression and concentrate and reclaim solvent; The extract that mixes extracted twice.
The detection of extract:
The drying sample of extract is got in
; Recovery rate through unrighted acid, tocopherol, tocotrienols, lipopolysaccharides, soluble dietary fiber in the Detection and Extraction thing is estimated the quality of rice bran extract; Detection method is carried out (parallel carrying out 3 times) through the conventional method of this area; The ratio of the total amount of the relevant nutrient that is contained in the total amount in nutrient that described recovery rate is meant relevant nutriment and the raw material of corresponding weight, testing result is as shown in table 1.
Table 1: rice bran nutrients middle part split-off is formed branch recovery rate testing result
| Nutritional labeling | Recovery rate (%) |
| Unrighted acid | 83±2 |
| Tocopherol | 91±3 |
| Tocotrienols, | 92±2.5 |
| Lipopolysaccharides | 86±1.5 |
| Soluble dietary fiber | 326±18 |
can be known from above-mentioned experimental result; Adopt method of the present invention can improve the recovery rate of rice bran nutrients; And can the part crude fibre be converted into soluble dietary fiber; Utilize the nutritional labeling in the rice bran to greatest extent, the bad mouthfeel that can avoid crude fibre to cause again has higher industrial value.
are when being understood that; The above-mentioned specific embodiment only is an illustrative; Concerning those of ordinary skills, can improve or conversion according to above-mentioned explanation, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention.
Claims (6)
1. the method for distilling of a rice bran nutrients is characterized in that comprising the steps:
(1) rice bran stabilization: fresh rice bran is cleaned with clear water, afterwards rice bran is carried out thermophilic digestion, boiling temperature is 110-150 ℃, digestion time 20-40 minute;
(2) rice bran hydrolysis: get the rice bran after stablizing; The water that adds its 3-6 times quality; Every 100kg rice bran adds amylase, the protease of 10-30 ten thousand units and the cellulase of 100-200 ten thousand units of 40-80 ten thousand units, mixes the back and is incubated 0.5-2 hour down at 40-80 ℃, and the rice bran after the hydrolysis is through pulverizing pulping; Cross and filter slurries, dry slurries are removed moisture;
(3) one-level extraction: the rice bran hydrolysate of drying is joined CO
2In the supercritical extract jar, feeding is carried agent ethanol and is extracted continuous the extraction 1～10 hour under 10～60 ℃ of extraction temperature, extracting pressure 0.1～1Mpa condition, the concentrated recovery of extraction product decompression solvent in extractor then;
(4) secondary extraction: the residue that extracts is joined another CO
2In the supercritical extract jar, in extractor, feed then and carry agent propane or butane or its combination and extract, the extraction temperature was extracted 1～10 hour under 10～25 ℃ of extraction temperature, extracting pressure 0.1～1Mpa condition continuously, extracted the product decompression and concentrated and reclaim solvent; The product that mixes extracted twice.
2. the method for distilling of rice bran nutrients according to claim 1, wherein said method for distilling comprises that also the rice bran nutrients to being extracted detects.
3. the method for distilling of rice bran nutrients according to claim 1, the agent of carrying of wherein said secondary extraction is a propane.
4. the method for distilling of rice bran nutrients according to claim 1, the extraction time of described one-level extraction or secondary extraction independently is 2-8 hour, further is preferably 4-6 hour.
5. according to the resulting rice bran nutrients of method for distilling of any described rice bran nutrients of claim 1-4.
By the described rice bran nutrients of claim 5 separately or with other food materials food prepared therefrom, described food is drink, biscuit, bread, compressed foods or quick-frozen food preferably.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100156542A CN102550935A (en) | 2012-01-18 | 2012-01-18 | Method for extracting rice bran nutrients |
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|---|---|---|---|
| CN2012100156542A CN102550935A (en) | 2012-01-18 | 2012-01-18 | Method for extracting rice bran nutrients |
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| CN102550935A true CN102550935A (en) | 2012-07-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103689610A (en) * | 2013-12-16 | 2014-04-02 | 广西大学 | Method for extracting dietary fibers in fresh manioc waste by enzyme-physical process |
| CN105996060A (en) * | 2016-05-29 | 2016-10-12 | 刘平 | Method for extracting dietary fiber from bamboo shoots |
| CN107307080A (en) * | 2017-07-31 | 2017-11-03 | 东北农业大学 | A kind of method for production of functional form rice bran Yoghourt |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327764A (en) * | 2000-06-08 | 2001-12-26 | 无锡轻工大学 | Method for producing health-care food containing rice bran nutrients |
| 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 |
-
2012
- 2012-01-18 CN CN2012100156542A patent/CN102550935A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327764A (en) * | 2000-06-08 | 2001-12-26 | 无锡轻工大学 | Method for producing health-care food containing rice bran nutrients |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| 毛金水 等: "米糠营养素提取的研究与生产应用", 《粮食储藏》, vol. 34, no. 06, 31 December 2005 (2005-12-31), pages 45 - 47 * |
| 池爱平 等: "脱脂米糠酶法水解制备米糠营养素工艺研究", 《食品科学》, vol. 27, no. 12, 31 December 2006 (2006-12-31), pages 339 - 343 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103689610A (en) * | 2013-12-16 | 2014-04-02 | 广西大学 | Method for extracting dietary fibers in fresh manioc waste by enzyme-physical process |
| CN105996060A (en) * | 2016-05-29 | 2016-10-12 | 刘平 | Method for extracting dietary fiber from bamboo shoots |
| CN107307080A (en) * | 2017-07-31 | 2017-11-03 | 东北农业大学 | A kind of method for production of functional form rice bran Yoghourt |
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Application publication date: 20120711 |