CN102771795A - Method for producing nutrient rich in selemium - Google Patents

Method for producing nutrient rich in selemium Download PDF

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Publication number
CN102771795A
CN102771795A CN2012102778719A CN201210277871A CN102771795A CN 102771795 A CN102771795 A CN 102771795A CN 2012102778719 A CN2012102778719 A CN 2012102778719A CN 201210277871 A CN201210277871 A CN 201210277871A CN 102771795 A CN102771795 A CN 102771795A
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rice
rich
preparation
selemium
selemium nutrition
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CN2012102778719A
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郭少祥
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Anhui Guangming Huaixiang Industry Trade Group Co Ltd
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Anhui Guangming Huaixiang Industry Trade Group Co Ltd
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Abstract

The invention discloses a method for producing nutrient rich in selemium. The method comprises the following steps: mixing pretreated rice meal with corn meal with a certain proportion uniformly; adding sodium selenite, regulating the content water in the mixed meals; transferring the mixed meals to a single-screw extrusion machine to extrude; cutting the mixed meals into rice grain shape by using a rotary cutter; putting the rice grains at constant temperature and humidity to temper and age; and then drying and polishing, thus obtaining the nutrient rich in selemium. The nutrient rich in selemium is good in cooking quality, and can be contributed to eliminating peroxides and radicals in the bodies of customers in regions with selenium deficient soils, so cells are prevented from being damaged; and moreover, the tumor growth is inhibited, and the body immunity is improved.

Description

A kind of preparation method who is rich in organic selemium nutrition rice
Technical field
The present invention relates to a kind of preparation method who is rich in organic selemium nutrition rice, relate in particular to a kind of method that adopts the screw Extrusion Technology preparation to be rich in organic selemium nutrition rice, belong to food processing technology field.
Background technology
Paddy rice is extensively planted in the whole world as staple food crop, is human very important grain source.According to FAO's statistics, 122 national rice cultivations are arranged in the world, cultivated area reaches hundred million hectares of 1.40-1.57 throughout the year, accounts for 23% of cereal cultivated area; About 600,000,000 tons of paddy total outputs, account for 29% of cereal total output; Have more than 50 country and produce paddy per year more than 100,000 tons.In the ten big paddy rice producing countries of the whole world, all in the Asia, China, India and Indonesia occupy first three except that Brazil.In 2009-2010 year, global rice output is estimated to reach record-breaking 4.481 hundred million tons on the international market, than last year increasing by 4,500,000 tons.Rice is one of main grain ration of China resident, and the population in the whole nation nearly 60% is staple food with the rice, and it is staple food with rice that 800,000,000 people are arranged approximately, and annual consumption rice amount is hundred million tons of 1.3-1.4, and consumption ways is directly edible rice and edible its fabricated product.Rice and goods thereof are maximum, the most stable grain consumption kinds of China.Directly eating as resident's grain ration more than 80% in the rice consumption figure, and the consumption of resident demand mode was changed to present auxotype by in the past simply having adequate food and clothing.
Rice is being kept the existence of population over half in the world as the food on basis, and it can provide energy and nutriments such as vitamin, protein, amino acid and inorganic elements continuously for people.Traditional paddy processing and eating method make the nutrient loss of rice serious, and nutritive value descends greatly.Rice is the important channel that people obtain nutrition, and long this highed milled rice of ingesting causes the shortage of some nutritional labeling easily, thereby influences the healthy of people.In order to solve the malnourished problem of rice, rice is carried out deep processing and fortification, become the main path of rice nutrition improvement.Improvement rice, fine finishining rice and enriched rice become the people of the world today very cost-effective approach of the various nutrients of picked-up comprehensively, and progressively move towards market.
Enriched rice have the advantages that some health food supplements the nutrients, but method for using is easier as a kind of reinforcement staple food.Strengthen the diet of rice through people with absorptions that have additional nutrients, the purpose that promotes health with realization.Advantages such as strengthening rice is the staple food of strengthening, and it is wide to have a crowd of ingesting, and nutrient content is secure, and price is lower.Because China is low selenium in place, area or scarce selenium environment more than 2/3; Therefore a kind of mouthfeel of research and development production is strengthened the selemium nutrition rice preferably, then can help people to remove body endoperoxide, free radical, makes cell avoid infringement; Suppress tumor growth simultaneously, improve body immunity.
At present, the production technology of enriched rice mainly is the suction method of soaking, and this method is raw material with highed milled rice; Raw material soaking in fortification liquid, is treated that it fully absorbs preliminarily dried after the nutrient solution, and protective layer is sprayed on the surface; After the redrying again secondary soak suction; Gas steams gelatinization, in outer sprayed protection acid solution, and the final drying rice that strengthened.This enriched rice nutrient loss when storage, transportation and sale is little, but the production process energy consumption is high, the investment big, and production cost is high, is not suitable for China rice processing enterprise and adopts.In addition, the enriched rice that existing prepared goes out, its food flavor cooking quality is general, and mouthfeel is relatively poor, is difficult to accepted by the consumer.
Summary of the invention
In view of the deficiency of prior art, the present invention is primary raw material with the rice meal, is aided with the corn flour of special ratios simultaneously, through the continuously extruded technological granulating and forming of single screw rod, thereby a kind of preparation method who is rich in organic selemium nutrition rice is provided.
In order to realize the object of the invention, the inventor has finally obtained following technical scheme through a large amount of experimental studies:
A kind of preparation method who is rich in organic selemium nutrition rice comprises the steps:
(1) rice was soaked in the 0.5%-2% sodium bicarbonate aqueous solution 1-3 hour, the oven dry crushing screening makes rice meal;
(2) take by weighing said rice meal, add the corn flour of 5-15% (mass percent that corn flour accounts for rice meal is 5-15%), mixing; Ratio in the per kilogram mixed powder adds 0.3-0.5 milligram sodium selenite slowly adds sodium selenite solution, stirs to make to mix; And the moisture of regulating mixed powder is 22-25%, is transferred in the single-screw extrusion machine, and setting five sections temperature of screw rod is 35 ℃-70 ℃-90 ℃-85 ℃-50 ℃; Rate of feeding is 30-34r/min, and screw speed is 16Hz, and rice kernel shape is cut into the rotary-cut cutter in the extruding back; Place and carry out aging 3-5 hour of tempering under 40-46 ℃, 70-75% damp condition; It is dry to put into drying box then, and polishing must be rich in organic selemium nutrition rice.
Preferably, the said preparation method who is rich in organic selemium nutrition rice, wherein the concentration of the used sodium bicarbonate aqueous solution of step (1) is 0.8%-1.3%, the rice soak time is 1.8-2.2 hour.
Preferably, the said preparation method who is rich in organic selemium nutrition rice, wherein regulating the mixed powder moisture in the step (2) is 24%.
Further preferably, the said preparation method who is rich in organic selemium nutrition rice, wherein the rate of feeding in the step (2) is 32r/min.
Compared with prior art, the preparation method who is rich in organic selemium nutrition rice who the present invention relates to has following advantage and obvious improvement:
(1) the subjective appreciation result of the test shows, the organoleptic indicator of selenium-rich nutritive rice of the present invention and common rice marks close, does not have significant difference.Aspect the individual event scoring, product of the present invention is compared with common rice, and smell is better, and color and luster is close, and outward appearance and flavour are lower slightly, and palatability is poor slightly.This shows that be rich on the basis of organic selenium satisfied, the nutrition engineering rice that the present invention produces meets Chinese eating habit at product performance (institutional framework, form, local flavor, mouthfeel, color etc.).
(2) can find out that through water absorption rate and cubical expansivity determination test result the water absorption rate of selenium-rich nutritive rice of the present invention and cubical expansivity and general rice are approaching, this means that the cooking quality of product of the present invention is better.
(3) adopt single-screw extrusion machine to push preparation, utilized existing equipment, practiced thrift preparation cost simultaneously.Be embodied in: present twin (double) screw extruder is compared with single screw rod, has more performance, more convenient operation, and prepared product quality is better, but its cost but is much higher than the latter.And the existing extrusion equipment of China with single screw rod be main, so the present invention adopts single-screw extrusion machine to push preparation, both utilized existing equipment, also practiced thrift preparation cost.
 
The specific embodiment
Below through the embodiment form foregoing of the present invention is remake further detailed description; But should this be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, all technology that realizes based on foregoing of the present invention all belong to scope of the present invention.General rice that the present invention selects for use is as contrast, and wherein general rice is northeast rice (Great Northern Wilderness board).
 
Embodiment 1
(1) rice is soaked in 1.1% (w/v) sodium bicarbonate aqueous solution carried out pre-treatment in 2 hours, pull oven dry out, pulverized 120 mesh sieves and make rice meal;
(2) take by weighing rice meal 50kg, add the 5kg corn flour, mixing, the ratio of adding 0.38 milligram of sodium selenite in the per kilogram mixed powder; Slowly add sodium selenite solution, stirring makes and mixes, and the moisture of adjusting mixed powder is 23%; Be transferred in the single-screw extrusion machine, setting five sections temperature of screw rod is 35 ℃-70 ℃-90 ℃-85 ℃-50 ℃, and rate of feeding is 32r/min; Screw speed is 16Hz, and rice kernel shape is cut into the rotary-cut cutter in extruding back, places to carry out tempering under 43 ℃, 72% damp condition and wore out 4 hours; Put into 55 ℃ of dryings of drying box then, polishing must be rich in organic selemium nutrition rice.
 
Embodiment 2
(1) rice is soaked in 0.8% (w/v) sodium bicarbonate aqueous solution carried out pre-treatment in 2 hours, pull oven dry out, pulverized 120 mesh sieves and make rice meal;
(2) take by weighing rice meal 50kg, add the 7kg corn flour, mixing, the ratio of adding 0.38 milligram of sodium selenite in the per kilogram mixed powder; Slowly add sodium selenite solution, stirring makes and mixes, and the moisture of adjusting mixed powder is 23%; Be transferred in the single-screw extrusion machine, setting five sections temperature of screw rod is 35 ℃-70 ℃-90 ℃-85 ℃-50 ℃, and rate of feeding is 30r/min; Screw speed is 16Hz, and rice kernel shape is cut into the rotary-cut cutter in extruding back, places to carry out tempering under 43 ℃, 72% damp condition and wore out 4 hours; Put into 55 ℃ of dryings of drying box then, polishing must be rich in organic selemium nutrition rice.
 
Embodiment 3
(1) rice is soaked in 0.5% (w/v) sodium bicarbonate aqueous solution carried out pre-treatment in 2 hours, pull oven dry out, pulverized 120 mesh sieves and make rice meal;
(2) take by weighing rice meal 50kg, add the 3kg corn flour, mixing, the ratio of adding 0.30 milligram of sodium selenite in the per kilogram mixed powder; Slowly add sodium selenite solution, stirring makes and mixes, and the moisture of adjusting mixed powder is 23%; Be transferred in the single-screw extrusion machine, setting five sections temperature of screw rod is 35 ℃-70 ℃-90 ℃-85 ℃-50 ℃, and rate of feeding is 32r/min; Screw speed is 16Hz, and rice kernel shape is cut into the rotary-cut cutter in extruding back, places to carry out tempering under 43 ℃, 72% damp condition and wore out 4 hours; Put into 55 ℃ of dryings of drying box then, polishing must be rich in organic selemium nutrition rice.
 
Embodiment 4
(1) rice was soaked in 2% (w/v) sodium bicarbonate aqueous solution 2 hours, pulls oven dry out, pulverized 120 mesh sieves and make rice meal;
(2) take by weighing rice meal 50kg, add the 3kg corn flour, mixing, the ratio of adding 0.30 milligram of sodium selenite in the per kilogram mixed powder; Slowly add sodium selenite solution, stirring makes and mixes, and the moisture of adjusting mixed powder is 23%; Be transferred in the single-screw extrusion machine, setting five sections temperature of screw rod is 35 ℃-70 ℃-90 ℃-85 ℃-50 ℃, and rate of feeding is 32r/min; Screw speed is 16Hz, and rice kernel shape is cut into the rotary-cut cutter in extruding back, places to carry out tempering under 43 ℃, 72% damp condition and wore out 4 hours; Put into 55 ℃ of dryings of drying box then, polishing must be rich in organic selemium nutrition rice.
 
The sensory evaluation research of embodiment 5 selenium-rich nutritive rice
Select 10 and judge composition of personnel and judge group, and be arranged in a spaciousness, bright, the quiet room, everyone one, do not disturb mutually.The time of judging fixes on 2h ante cibum, and the personnel that judge before the trial test must not smokings or eaten sugar, and gargle with warm boiling water, residue in removing mouthful.Ready selenium-rich nutritive rice (embodiment 1 preparation) and common northeast rice sample mean branch are gone on each ceramic whiteware dish, and everyone judges by a dish, and the situation of sample must not be described to the personnel of judging.Judge outcome record in grade form.
The content of judging is: the color of rice, appearance character, palatability (comprising viscosity, elasticity, hardness) and flavour.When judging, identify the rice smell while hot earlier, observe rice color and luster, surface structure then, again through chewing taste evaluation palatability and flavour.
Contrast scoring reference sample (rice of boiling) is marked, and again the addition of each item score is comprehensive grading.Wherein, smell 25 minutes, color and luster 10 minutes, surface structure 10 minutes, palatability 30 minutes, flavour 25 minutes, total points is 100 minutes.Standards of grading are seen table 1.
According to each comprehensive grading of judging personnel calculating mean value as a result, individual persons is judged the big person of error (surpassing mean value more than 10 minutes) and can be given up, and recomputates mean value after giving up.At last with the mean value of comprehensive grading as evaluation result.
The food flavor evaluation index of table 1 rice and score value standard
Evaluation content 8.0-10.0 divide 5.0-8.0 divide 0-5.0 divide
Smell [weighted value 2.5] Rice gives off a strong fragrance, pleasant Rice fragrance is not dense, but does not have bad smell Fragrance is not obvious or obvious bad smell arranged
Color and luster [weighted value 1] Be faint yellow or normal look, color homogeneous, good luster Irregular colour one, gloss is not enough Have heterochromatic or be a bit darkish in color tarnish
Surface structure [weighted value 1] Rice grain is complete full, has only minority grain of rice cracking, and laxity is good Cracking rice grain quantity is more, more even, and laxity is relatively poor The rice grain cracking, fragmentation, not full, tarnish, rice grain is difficult for separately, agglomerating pasty state
Palatability [weighted value 3] Smooth, chew strength, the viscoplasticity appropriateness, pliability is good, and is soft agreeable to the taste More smooth, it is relatively poor to chew strength, and viscoplasticity is general, and harder or softer mashed, palatability is general Soft mashed
Flavour [weighted value 2.5] The rice flavour is abundant long Flavour is general Flavour is relatively poor
Comprehensive grading=smell+color and luster+outward appearance+palatability+flavour
Annotate: during judge, full marks multiply by weighted value at last in 10.0 minutes, got final numerical value.
 
The sensory evaluation scores of table 2 selenium-rich nutritive rice of the present invention and common rice relatively
Sample Smell 25 minutes Color and luster 10 minutes Outward appearance 10 minutes Palatability 30 minutes Flavour 25 minutes Comprehensive grading
Selenium-rich nutritive rice 17.81±0.96 7.22±0.40 7.05±0.16 20.86±1.80 18.30±1.21 71.24
Common rice 17.04±1.12 7.11±0.35 7.13±0.11 21.80±1.91 18.92±1.13 72
The subjective appreciation result of the test shows that the organoleptic indicator of selenium-rich nutritive rice of the present invention and common rice marks close, does not have significant difference.Aspect the individual event scoring, product of the present invention is compared with common rice, and smell is better, and color and luster is close, and outward appearance and flavour are lower slightly, and palatability is poor slightly.This shows that be rich on the basis of organic selenium satisfied, the nutrition engineering rice that the present invention produces meets Chinese eating habit at product performance (institutional framework, form, local flavor, mouthfeel, color etc.).
 
The water absorption rate of embodiment 6 selenium-rich nutritive rice and cubical expansivity are measured
(1) water absorption rate
Take by weighing the dried selenium-rich nutritive rice of 10g, common northeast rice respectively, put into the wire cage of certain mass, after the flushing metal cage is put in the 300mL beaker, add distilled water 150mL, boiling water bath 20min when boiling (1 pick up counting).Take out metal cage and be suspended from the beaker top, draining 2min spreads out then on the dry gauze of cleaning and cools off 30min, and rice water absorption rate, computing formula: rice water absorption rate=(rice quality/10) * 100% are calculated in the back of weighing.
(2) cubical expansivity
With the selenium-rich nutritive rice of certain mass, common northeast rice, be respectively charged in the 250mL graduated cylinder that fills 50mL, reading deducts the volume that 50mL is sample.With rice volume after rice volume and the boiling before this method mensuration boiling, according to formula volume calculated expansion rate, computing formula: cubical expansivity=(rice volume/rice volume) * 100%.
The result is referring to table 3.
The water absorption rate and the cubical expansivity of table 3 selenium-rich nutritive rice
Sample Water absorption rate Cubical expansivity
Selenium-rich nutritive rice (embodiment 1) 327.15% 320.29%
Selenium-rich nutritive rice (embodiment 3) 338.44% 329.63%
General rice 321.76% 314.51%
Water absorption rate and expansion rate are big more, and the loose of the rice of preparation expands, and mouthfeel is relatively poor.Can find out that through result of the test the water absorption rate of selenium-rich nutritive rice of the present invention (the especially product of embodiment 1 preparation) and cubical expansivity and general rice are approaching.

Claims (4)

1. a preparation method who is rich in organic selemium nutrition rice comprises the steps:
(1) rice was soaked in the 0.5%-2% sodium bicarbonate aqueous solution 1-3 hour, the oven dry crushing screening makes rice meal;
(2) take by weighing said rice meal, add the corn flour of 5-15%, mixing, the ratio of adding 0.3-0.5 milligram sodium selenite in the per kilogram mixed powder; Slowly add sodium selenite solution, stirring makes and mixes, and the moisture of adjusting mixed powder is 22-25%; Be transferred in the single-screw extrusion machine, setting five sections temperature of screw rod is 35 ℃-70 ℃-90 ℃-85 ℃-50 ℃, and rate of feeding is 30-34r/min; Screw speed is 16Hz, and rice kernel shape is cut into the rotary-cut cutter in extruding back, places to carry out tempering under 40-46 ℃, 70-75% damp condition and wore out 3-5 hour; It is dry to put into drying box then, and polishing must be rich in organic selemium nutrition rice.
2. according to the said preparation method who is rich in organic selemium nutrition rice of claim 1, it is characterized in that: the concentration of the used sodium bicarbonate aqueous solution of step (1) is 0.8%-1.3%, and the rice soak time is 1.8-2.2 hour.
3. according to the said preparation method who is rich in organic selemium nutrition rice of claim 1, it is characterized in that: regulating the mixed powder moisture in the step (2) is 24%.
4. according to the said preparation method who is rich in organic selemium nutrition rice of claim 1, it is characterized in that: the rate of feeding in the step (2) is 32r/min.
CN2012102778719A 2012-08-07 2012-08-07 Method for producing nutrient rich in selemium Pending CN102771795A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103609954A (en) * 2013-11-28 2014-03-05 福建新顺成食品科技有限公司 Five-grain rice and preparation method thereof
CN104509785A (en) * 2014-11-04 2015-04-15 苏州硒泰克生物科技有限公司 Preparation method of instant selenium enriched rice noodles
CN107373374A (en) * 2017-07-26 2017-11-24 安徽省福宁米业有限公司 A kind of extruding forming method of the feature rice containing resistant starch
CN108541881A (en) * 2018-03-21 2018-09-18 安徽农业大学 A kind of extruding Nutritive Rice and preparation method thereof rich in pentosan
CN112869016A (en) * 2021-01-25 2021-06-01 瑞德智能科技(淮安)有限公司 Special whole grain rice for diabetes patients and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071555A (en) * 1991-10-19 1993-05-05 贺平亚 Instant rice, congee, the incorporate method for making of crispy rice
CN1586284A (en) * 2004-07-14 2005-03-02 崔柏松 Synthetic reniforced functional rice and its preparing method
CN101658259A (en) * 2009-09-18 2010-03-03 南昌大学 Method for preparing enriched rice with hot-pressing gel technology

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1071555A (en) * 1991-10-19 1993-05-05 贺平亚 Instant rice, congee, the incorporate method for making of crispy rice
CN1586284A (en) * 2004-07-14 2005-03-02 崔柏松 Synthetic reniforced functional rice and its preparing method
CN101658259A (en) * 2009-09-18 2010-03-03 南昌大学 Method for preparing enriched rice with hot-pressing gel technology

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103609954A (en) * 2013-11-28 2014-03-05 福建新顺成食品科技有限公司 Five-grain rice and preparation method thereof
CN103609954B (en) * 2013-11-28 2016-08-17 福建新顺成食品科技有限公司 A kind of Five-grain rice and preparation method thereof
CN104509785A (en) * 2014-11-04 2015-04-15 苏州硒泰克生物科技有限公司 Preparation method of instant selenium enriched rice noodles
CN107373374A (en) * 2017-07-26 2017-11-24 安徽省福宁米业有限公司 A kind of extruding forming method of the feature rice containing resistant starch
CN108541881A (en) * 2018-03-21 2018-09-18 安徽农业大学 A kind of extruding Nutritive Rice and preparation method thereof rich in pentosan
CN112869016A (en) * 2021-01-25 2021-06-01 瑞德智能科技(淮安)有限公司 Special whole grain rice for diabetes patients and preparation method thereof

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Application publication date: 20121114