CN101430258B - Non-iron pollution milled rice high throughput process technology and use thereof - Google Patents
Non-iron pollution milled rice high throughput process technology and use thereof Download PDFInfo
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- CN101430258B CN101430258B CN2008102390317A CN200810239031A CN101430258B CN 101430258 B CN101430258 B CN 101430258B CN 2008102390317 A CN2008102390317 A CN 2008102390317A CN 200810239031 A CN200810239031 A CN 200810239031A CN 101430258 B CN101430258 B CN 101430258B
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Abstract
The invention relates to a technology for processing polished rice from rough rice and an application thereof. A vibrating mixer and a self-made matched device are used for mixing and polishing the rough rice and quartz sand in proportion of 1 to 1 and can realize the fast polished rice processing on a number of rice samples without the iron pollution. The technology has the characteristics of fewer samples, low cost and no metal pollution, and can process a number of samples within a short time. The technology is fit for processing early material for breeding into sample without the iron pollution during the iron-enriched rice breeding and provides the reliable polished rice processing technology for mensurating and filtering iron-enriched material.
Description
Technical field
The present invention relates to rice precision metric system Preparation Method of a kind of iron-free metallic pollution and uses thereof, be applicable in the rice rich in iron breeding breeding material be carried out the sample processing of iron-free metallic pollution.
Background technology
Iron element nutrition and health have close relationship, and it participates in haemoglobin, myoglobins, cytochrome, iron content Enzyme Production in the human body, is concerning transportation and the exchange of body cell oxygen and carbon dioxide.The human body iron deficiency not only causes the anaemia illness, also can cause the immune function of human body infringement; Pregnant woman's iron deficiency also can cause premature labor and fetal in utero poor growth.According to statistics, 30% population iron deficiency is arranged in the world.The micro nutrient deficit such as iron, vitamin A is the ubiquitous problems of China urban and rural residents, the 4th Chinese residents nutrition and investigation of health conditions report according in October, 2004 Ministry of Public Health's issue, whole nation resident's prevalence of anemia average out to 15.2%, the asiderosis rate of Chinese children is up to 38.6%, and this problem of the poor areas of the western region is even more serious.The data of State Statistics Bureau's investigation show that the annual loss that the malnutrition that microelement deficiencies cause causes accounts for the 3%-4% of gross national product (GNP) up to 30,000,000,000 Renminbi.Improve iron in human element nutrition condition, eliminate the hypoferric anemia sufferer, need to eat the high animals and plants food of a little iron content more.Rice is the staple food of nearly half population in the world, and it is that the people of the countries and regions of the world today take rice as staple food are used for improving the earliest the most direct approach of nutrition condition that rice is carried out fortification.But owing to the impact of all factors such as the consumption habit that is subjected to the consumer and economic situation, enriched rice is difficult to permanent popularization, thereby produces little effect.Improve iron content in the rice, cultivate rich iron rice, mend iron by edible rich iron rice and be the most effective and lasting approach that solves people's iron element nutritional deficiency, significant for the body health level that improves the population below the poverty line.
Iron content in the rice mainly concentrates on rice bran, plants in skin and the embryo.Paddy is after commerce is processed into polished rice, and its ferro element runs off serious, and the iron content in the polished rice is remaining less than 10%.Paddy rice is the minimum crop of iron content in the cereal crop.The International Rice Research Institute carries out the iron content analysis to the brown rice of more than 1000 farm varieties, commercial variety and improved line, and the discovery average content of iron is 12.1mg/kg, luffing 7.5-24.4mg/kg.All attach great importance to by breeding technique both at home and abroad and improve the paddy rice iron content, since nineteen ninety-four, general headquarters are positioned at the cultivation that the rice rich in iron kind is just set about by Filipine International Rice Research Institute, utilize traditional breeding method to select the brown rice iron content and are the rice new strain IR68144 of 21mg/kg.Domestic many scholars carry out brown rice or the analysis of polished rice iron content to the germ plasm resource of collecting from China different regions, have obtained the higher germplasm materials of a collection of iron content or local varieties.Comprehensively in the past domestic to paddy rice iron content measurement result, find main two problems that exist, the one, most of research measure to as if brown rice, the brown rice iron content of same kind generally is significantly higher than polished rice, but what people ate usually is polished rice, just has more practical significance so must measure iron content take polished rice as object; The 2nd, although some research adopts the polished rice sample to measure, but the process of testing sample from paddy to the polished rice all adopts common small-sized iron processing equipment, because axle and housing are made by iron material, there is serious iron pollution in process, cause measurement result higher, thereby can not really reflect the iron level of sample polished rice itself.According to us to the iron content testing result of different processing equipments processing with batch sample, as seen from Table 1,18 samples all are higher than the polished rice iron content that international paddy rice is adopted agate axle center (without iron pollution) processing through the polished rice iron content of domestic iron processing equipment processing, wherein the iron content difference of 9 samples reaches significantly or the utmost point level of signifiance, shows that there is serious pollution in the small-sized iron polished rice processing machine tool that present domestic most laboratory is used to the polished rice iron content.Consider the processing equipment expensive (more than 10 ten thousand Renminbi) in agate axle center, the laboratory that general amateur rice matter is measured is difficult to promote.
The processing equipment that table 1 different materials is made is to the comparison of rice sample polished rice iron content pollution level
*, * * and * * * represent that the probability level of significance of difference is respectively 0.05,0.01 and 0.001.
Since two thousand three, started in the world the Harvest-Plus plan of cultivating the staple crops kind of micro-enrichment by breeding technique, the mission of this project is to reduce and prevent the bad problem of global human nutrition by staple crops biological reinforced.Under the help of international Harvest-Plus project, China set up the HarvestPlus-China Project in 2004, the biological reinforced breeding work of the staple crops such as beginning paddy rice, corn, wheat.Therefore, for the result of study that the iron of China is biological reinforced and the international research of going together compare, come on paddy rice sample processing and the referred agenda of standardization issue measured.Under this background, we develop a kind of high flux, without iron pollution and be fit to the paddy rice polished rice process technology of a large amount of breeding materials, eliminate the iron pollution problem that processing equipment brings in the polished rice process, thereby guaranteed subsequent measurements result's science and reliability.
Summary of the invention
The object of the present invention is to provide rice precision metric system Preparation Method and the application thereof of a kind of low cost, high flux, iron-free metallic pollution, in the very suitable rice biological Intensive breeding process polished rice of a large amount of breeding material iron-free metallic pollutions is processed.
Purpose of the present invention is achieved through the following technical solutions:
The vibrating mixer (model SO400) of utilizing Shanghai Su Kai chemical industry company limited to produce is ground.These facility have pair sample Automatic-clamping and loosen, but the highest treatment product weight is 40kg, electronic timer 0～30 minute, and can process maximum product size length and width height is the characteristics of 350 * 350 * 450mm.Abrasive media adopts the graininess silica sand of 80 order sizes, is used for brown rice is ground to form polished rice.On this basis, the present invention develops following equipment: the round bottom plastic test tube that (1) gets two volumes is 30ml, after upper semisection clipped, two plastic tubes are processed into inside and outside mutually nested identical shape in the cross section, be two semicircular sealing test tube device (Fig. 1) after docking is tightened, be used for sample dress sample; (2) plank with holes, 40 holes of every plate (vertical 5 holes, horizontal 8 holes), aperture ratio sealing test tube slightly larger in diameter, highly for sealing test tube 2/3 height, fixing headblock is arranged around the plank surface, the height of headblock and plank just in time be placed on the hole in test tube height identical (Fig. 2); (3) the self-control nylon mesh screen of pore size 2mm and hairbrush (Fig. 3) are used for separating of polished rice and silica sand after the sample processing.
To place above-mentioned test tube through the 5g that weighs of brown rice after the brown rice machine shelling, add 5g silica sand in 1: 1 ratio, pour in the test tube, the test tube sealing is placed in the plank hole, again plank is placed on the vibrating mixer, the above covers fiberboard or the cardboard that 0.5cm is thick, Automatic-clamping plank about elder generation during machine startup, then carried out the different directions higher-order of oscillation 20 minutes with the frequency of per minute 800 times, suspend 5 minutes, be convenient to distributing of sample and silica sand friction heat, again start the machine after 5 minutes and vibrate again 20 minutes, grind and finish.After the taking-up sample is sieved, separate polished rice.If the polished rice surface is with the mishmash of a small amount of silica sand and rice bran, available clean thieving paper is wiped mishmash gently.The polished rice that obtains can be directly used in digestion, measures iron content for plasma emission spectrometer (ICP) or atomic absorption spectrophotometer (AAS) (AAS).
We compare with the precision of different process times (40,70 and 120 minutes) sample being processed different particle shapes (short grain and elongated grain); find no matter paddy is short grain or elongated grain; processed 40 minutes; the polished rice machining precision of different particle shape paddy is just the same; and with the precision (73% of commerce processing; different cultivars slightly has change) almost completely identical (Fig. 4, table 2).Adopt same sample that the machining precision of plank diverse location is also compared, find that the position, different hole (Fig. 2) of same plank is on the not impact (table 3) of polished rice machining precision, processing has consistent precision to the paddy rice polished rice to show this kind process equipment, meets the free of contamination processing request of iron content working sample fully.
The different particle shapes of table 2 and the comparison of different process times on the impact of polished rice machining precision
Position, the different hole of table 3 is on the impact of same rice sample polished rice rate
The present invention compared with prior art has the following advantages and effect:
(1) iron-free metallic pollution
Common polished rice processing machine tool is made by iron material, and iron machinery has certain iron pollution to the polished rice surface in the sample process of lapping, thereby affects the accuracy of sample iron content measurement result.The present invention adopts the plastic tube device, and silica sand and brown rice compound sample can not produce the pollution of any ferrous metal in process of lapping, thereby can guarantee accuracy and reliability that sample polished rice iron content detects.
(2) required sample size is few
The minimum 20g of need of brown rice amount that common iron polished rice machinery requires the processing polished rice, the low from generation to generation grain weight of individual plant of breeding is difficult to reach this quantitative requirement, thereby is difficult to realize the early screening to breeding segregating generation material polished rice iron content.The milling apparatus of utilization of the present invention does not have special requirement to sample size, each sample size arrives several grams even tens less also can normal process, be fit to very much the screening to separation early generation material in the rice biological Intensive breeding process, thereby can greatly improve breeding efficiency.
(3) high flux, low cost
Common iron polished rice machinery can only be processed 1 sample at every turn, and is time-consuming longer to the grinding of a large amount of breeding materials.The present invention utilizes vibrating mixer, its dead weight capacity can reach 40kg, and a plank can hold 40 samples, once grind the grinding that the plank that 3～5 numbers of blocks do not wait can be clamped together, such 40 minutes disposable grinds 120～200 samples, and grinding efficiency is much higher than common iron rice polisher.Abrasive media silica sand is cheap, and can repeatedly reuse after washing, drying, and therefore almost one-time investment can repeatedly utilize.
Description of drawings:
Fig. 1 fills the sample sealed tube, is spliced after clipping the first half by the plastic test tube of 2 30ml, and volume is about 30ml.
Fig. 2 fills the sample groove
A is used for the plank with holes of fixed sample.
The Position Number in hole on the B plank.
Fig. 3 sieve and hairbrush
Fig. 4 polished rice process equipment is on the polished rice rate impact of different particle shape paddy and different milling times
A is that elongated particle shape paddy grinds the polished rice sample after 40,70 and 120 minutes
B is the polished rice sample of short particle shape paddy grinding after 40,70 and 120 minutes
Embodiment
Below in conjunction with the implementation example, further set forth the present invention.Should be appreciated that following example only is used for explanation the present invention and is not used in the claimed scope of the present invention that limits.
The First Year that started in HarvestPlus rice in China iron fortification programs in 2004, we plant in same field, Hainan 53 Rice Germplasm Resources from country variant, and the detection of polished rice iron content is carried out in the results storage after 2 months.Every part of kind takes by weighing 10g paddy, after brown rice machine shelling, heavily accounts for paddy re-computation brown rice rate, brown rice rate average out to 80.5% according to the brown rice of every kind.Every kind is got 5g brown rice, adding 5g silica sand packs in the plastic tube in the lump, place the plank in two 40 holes, vibration was ground 20 minutes under 800 rev/mins speed, leaving standstill vibrates after 5 minutes again ground 20 minutes, taking-up is sieved, and separates polished rice and silica sand, wipes a small amount of silica sand and the rice bran mishmash on polished rice surface with thieving paper.The polished rice rate average out to 72.6% of different cultivars, luffing is 72.1%～73.2% (table 4), and is very approaching with the polished rice rate of commerce processing.
The polished rice that obtains is adopted the steps such as strong acid at high temperature digests, filtration, the polished rice iron content that adopts ICP to measure is listed in table 4.53 sample polished rice average content of iron are 3.2mg/kg as known from Table 4, luffing is 0.8mg/kg～6.7mg/kg, filter out and be numbered X48 Feng-Xiang-Si-Miao, the polished rice iron content reaches 6.7mg/kg, near the initial target of the biological reinforced breeding 8mg/kg of international paddy rice iron, we use the parent of this material as the biological reinforced breeding of iron.
Table 4 is from the selection result of country variant variety source polished rice iron content
Claims (2)
1. the rice precision metric system Preparation Method of an iron-free metallic pollution is characterized in that the method comprises following step:
A, choose sample:
Brown rice after shelling is mixed in 1: 1 ratio with the graininess silica sand of 80 order sizes;
B, the sample of packing into:
The described sample of choosing is packed in the plastic test tube device of closed at both ends, the round bottom plastic test tube that described plastic test tube device is is 30ml by two volumes, after upper semisection clipped, in the cross section two plastic tubes are processed into inside and outside mutually nested identical shape, are two semicircular sealing test tube device after docking is tightened;
C, fixed sample:
Described sealing test tube device is fixed in the plank with holes, vertical 5 holes of described plank, horizontal 8 holes, aperture ratio sealing test tube device slightly larger in diameter, highly be sealing test tube 2/3 height, fixing headblock is arranged around the plank surface, the height of headblock and plank just in time be placed on the hole in cuvette cartridge degree of setting high identical;
D, ground sample:
Described plank is placed on the vibrating mixer, cover fiberboard or the cardboard that 0.5cm is thick at plank again, Automatic-clamping plank about elder generation during machine startup, then carried out the different directions higher-order of oscillation 20 minutes with the frequency of per minute 800 times, suspending starts the machine after 5 minutes again vibrates 20 minutes again, grinds and finishes;
E, sample separation:
With the sample after grinding by the aperture be 2mm the screening of self-control nylon wire from, obtain polished rice.
2. the purposes of the paddy rice polished rice of iron-free metallic pollution according to claim 1 in iron content is measured.
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| CN2008102390317A CN101430258B (en) | 2008-12-05 | 2008-12-05 | Non-iron pollution milled rice high throughput process technology and use thereof |
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| CN2008102390317A CN101430258B (en) | 2008-12-05 | 2008-12-05 | Non-iron pollution milled rice high throughput process technology and use thereof |
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| CN101430258B true CN101430258B (en) | 2013-02-13 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1221605A1 (en) * | 2001-01-08 | 2002-07-10 | European Community | Portable sampling lance |
| CN101266200A (en) * | 2008-04-24 | 2008-09-17 | 上海交通大学 | Paddy rice root tip chromosome slide-making method |
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- 2008-12-05 CN CN2008102390317A patent/CN101430258B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1221605A1 (en) * | 2001-01-08 | 2002-07-10 | European Community | Portable sampling lance |
| CN101266200A (en) * | 2008-04-24 | 2008-09-17 | 上海交通大学 | Paddy rice root tip chromosome slide-making method |
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Granted publication date: 20130213 Termination date: 20131205 |