CN102464112A - Rice atmosphere packaging method and product thereof - Google Patents
Rice atmosphere packaging method and product thereof Download PDFInfo
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- CN102464112A CN102464112A CN2010105352051A CN201010535205A CN102464112A CN 102464112 A CN102464112 A CN 102464112A CN 2010105352051 A CN2010105352051 A CN 2010105352051A CN 201010535205 A CN201010535205 A CN 201010535205A CN 102464112 A CN102464112 A CN 102464112A
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Abstract
The invention relates to a rice atmosphere packaging method and a product thereof. The packaging method at least comprises the following steps of: placing rice in a packaging part, inflating preservation air into the packaging part, and sealing the packaging part, wherein during sealing, in the air in the packaging part, the volume percentage of carbon dioxide is controlled to be in a low level, and the volume concentration of carbon dioxide is not needed to be controlled to be 50 to 80 percent. When the technical scheme is adopted, the better effects of insect prevention, mould proofing, and preservation effects are achieved, and the air inflation cost is reduced; and the packaging form is appropriate, so the damage rate in the conveying and selling process is reduced.
Description
Technical field
The present invention relates to agricultural product packaging and storage technique field, particularly the packing of rice and storage technique field relate in particular to a kind of rice with air regulation packing method and products thereof.
Background technology
Rice is the finished product that paddy is processed after operations such as cleaning, husk rice, finished product arrangement.China and world market are divided into three types in long-grained nonglutinous rice, polished rice and glutinous rice according to particle shape and grain matter with rice usually.In the international market, again according to paddy processing stage and job operation, rice there is following classification again: brown rice, rice, preboiled rice, crack rice.
There are many difficulties in preservation and freshness aspect about rice always.
Present stage; China grows (being generally 3～6 months) from the rice processing to the pitch time selling, yet the rice after the paddy processing has lost the protective cover of cot; Organizational structure exposes; Very easily occur infested, go mouldy, problem such as dehydration, and then cause edible quality to descend, or cause food-safety problem; Simultaneously, the grain of rice after milling itself still remains a biological living, also at the biochemical reactions such as breathing that constantly carry out self; Time has been grown, and can cause the protein loss of rice, even phenomenon such as occur becoming sour; The structure and the quality of rice change, and the food flavor value descends.
Therefore, the packing of the rice form and the aspects such as material, packing method of packing (for example) seems particularly important for the preservation and freshness of rice.In addition, everybody should be understood that packing is also of crucial importance for maintenance, the product preservation and freshness of the packing effect of transportation of product (transportation convenience degree, cost control) and transportation.
About the packing of rice, generally adopt the form of packaging bag, common plastics woven bag for example also can apply the rete that is coated with of layer of polyethylene or polypropylene material usually on the outside face of common plastics woven bag.But still not enough, its anti-extraneous infection ability is relatively poor, receives the pollution of outside insect pest easily, and it is bigger also influenced by exterior humiture, not enough to insect protected, mildew-resistant, the fresh-keeping aspect effect of product.
This just needs us on the improvement packing method, to make an effort.At present; Those skilled in the art begin one's study and the CO2 controlled atmospheric packing are applied to the packing of rice; Result of study shows that the CO2 in the controlled atmospheric packing can fully penetrate in the rice, suppresses or stop the biochemical reactions such as respiration of rice; Reduce the loss of protein, also can have insecticidal effect preferably simultaneously.
Referring to publication number is CN101057608A Chinese invention patent prospectus, and this patent discloses a kind of method that adopts CO2 controlled atmospheric packing method that the grain that comprises rice is carried out fresh-keeping packaging, and wherein proposition need charge into the fresh-keeping gas of CO2 (gas gross 70%) of high concentration in packing; Just can make protein be in smother; Form negative pressure in the dormancy fully, thin-walled plastic container, grain is compressed; The plumule of grain and top layer have perfect shelter like this; Can not come off, thereby reach fresh-keeping purpose, freshness date was more than 1 year.
Referring to publication number is CN101416659A Chinese invention patent prospectus, and this patent discloses a kind of foodstuff activity preserving package bag system, through gas regulator the oxygen concentration in the packaging bag is controlled at below 2%, and CO2 is controlled at 50%-80%.Point out general O in the literary composition
2Concentration＜8% o'clock has apparent in view lethal effect, O to the rice insect
2Content is 5%～7% o'clock, can kill off the insect pests in 1～2 week.CO
2Mostly the required concentration that kills off the insect pests is 60%～80% generally than higher.
In addition, also having document " rice with air regulation preservation and freshness research " (Pan Juzhong etc., [J] fresh-keeping and processing, 2005) to propose gas concentration lwevel needs greater than 80%.
To sum up, the CO2 controlled atmospheric packing method field about rice it has been generally acknowledged that O
2Concentration＜8%, CO2 be controlled at 50%-80% and more than, just can reach preferable insect protected, mildew-resistant, fresh-keeping effect.
Summary of the invention
One aspect of the present invention provides a kind of rice with air regulation packing method; This method comprises at least rice is placed the package member of being processed by bubble-tight packing; And in said package member, charging into fresh-keeping gas, the step of at last said package member being carried out pressurizing window is during pressurizing window; In the internal gas of said package member, carbon-dioxide percent by volume is 16-40%.
The contriver finds through lot of experiments beyond expectationly, need not the CO2 volume concentration is controlled at 50%～80%, when adopting technique scheme, also can obtain preferable insect protected, mildew-resistant, fresh-keeping effect.
In a specific embodiment of the present invention, gas concentration lwevel is 25%.In a specific embodiment of the present invention, gas concentration lwevel is 30%.In a specific embodiment of the present invention, gas concentration lwevel is 28%.In a specific embodiment of the present invention, gas concentration lwevel is 32%, and in another embodiment, gas concentration lwevel is 35%.In a specific embodiment of the present invention, gas concentration lwevel is 16%.In another specific embodiment of the present invention, gas concentration lwevel is 40%.
In a specific embodiments of the present invention, the percent by volume of oxygen is less than 21%.Preferably, oxygen concentration is 8%-18%.Preferred, oxygen concentration is 12-16%.Preferred, oxygen concentration is 14-15%.Preferably, oxygen concentration is less than 8%.Preferred oxygen concentration is 0.
In addition, the contriver finds under study for action, when rice is carried out controlled atmospheric packing; Charge into carbonated fresh-keeping gas; After the pressurizing window, rice surface can continue absorption to CO2, is in negative pressure state in the package member always; After after a while (being generally 6-50 hour), it is stable that the package member internal gas pressure reaches basically.If the fresh-keeping atmospheric carbon dioxide excessive concentration that charges into, the steady timer-operated air pressure of package member internal gas pressure low excessively (excessive with the ambient pressure difference) then is easy to cause the flat bag and the bale broken problem of packaging bag, especially for the rice packaging product of inner wrapping specification.In addition, in the process of transportation, if when still having certain density CO2 in the package member, the continuous negative pressure state in the package member is very unfavorable to the transportation of packaging product.
For this reason, the contriver has done further improvement on the basis of technique scheme, and when selecting a suitable density of carbon dioxide gas, package member internal gas cumulative volume during to pressurizing window (gas reservation amount) is controlled to a certain extent.
Further improvement as technique scheme; During pressurizing window; The ratio of the total mass of the inner rice of said package member internal gas cumulative volume and said package member is 500ml/kg～700ml/kg, and the numerical value that calculates the internal gas cumulative volume that this ratio adopts is with the volume metering numerical value of this internal gas under standard condition STP (0 ℃, one barometric pressure).
This technical scheme has adopted a comparatively moderate gas concentration lwevel, and unexpected on the one hand discovery need not to adopt existing high concentration, still can obtain preferable insect protected, mildew-resistant, fresh-keeping effect; On the other hand; Select the gas concentration lwevel of this particular range and control corresponding gas reservation amount, guaranteed that difference is not too large between package member air pressure inside and the external atmosphere pressure after the package member internal gas pressure is stable; After accumulating, sales process in; The flat bag of rice packaging product and the probability of bale broken are lower, and it is lower to occur simultaneously the probability that swell and casing subside behind the rice packaging packaging products in boxes, is convenient to the transportation storage.
According to relation (PV=nRT, R are constant) between the pressure of gas, volume, molal quantity, the temperature, under the certain situation of the amount of gas (molal quantity), volume can change with the variation of temperature and pressure.Therefore, the temperature during rice packaging, the difference of inflation pressure, the volume of internal gas can be different.Be accurate statement, above-mentioned package member internal gas numerical total volume (also claiming gas retention volume (RV) amount) is the volume metering numerical value under standard condition STP (standard temperature and pressure) (0 ℃, one barometric pressure).Those skilled in the art can be that benchmark is converted into the volume numerical value under concrete package temperature and the pressure with above-mentioned numerical value according to common practise, formula etc. after knowing technique scheme.
Preferably, during pressurizing window, said package member internal gas cumulative volume (measuring numerical value under the standard condition) is 530ml/kg～680ml/kg with the ratio of the total mass of the inner rice of said package member.Preferred, ratio is 550ml/kg～650ml/kg.Choosing is more arranged, and ratio is 580ml/kg～620ml/kg.
In a specific embodiment of the present invention, during pressurizing window, being packaged with 0.68kg rice and cumulative volume in the described package member is the internal gas of 380-420ml (measuring numerical value under the standard condition).Preferred, if during pressurizing window, be normal temperature and pressure (20-25 deg.c, 1 barometric pressure) in the package member, 0.68kg specification rice packaging product then, package member internal gas cumulative volume is about 430ml.
In a specific embodiment of the present invention, being packaged with 2.5kg rice and cumulative volume in the described package member is the internal gas of 1520-1600ml (measuring numerical value under the standard condition).Preferred, if during pressurizing window, be normal temperature and pressure (20-25 deg.c, 1 barometric pressure) in the package member, 2.5kg specification rice packaging product then, package member internal gas cumulative volume is about 1700ml.
In a specific embodiment of the present invention, being packaged with 5kg rice and cumulative volume in the described package member is the internal gas of 2950-3100ml (measuring numerical value under the standard condition); Preferred, if during pressurizing window, be normal temperature and pressure (20-25 deg.c, 1 barometric pressure) in the package member, 5kg specification rice packaging product then, package member internal gas cumulative volume is about 3300ml.
In a specific embodiment of the present invention, being packaged with 10kg rice and cumulative volume in the described package member is the internal gas of 5900-6100ml (measuring numerical value under the standard condition).Preferred, if during pressurizing window, be normal temperature and pressure (20-25 deg.c, 1 barometric pressure) in the package member, 5kg specification rice packaging product then, package member internal gas cumulative volume is about 6500ml.
In a specific embodiment of the present invention, during pressurizing window, in the internal gas of said package member, except CO2 with the oxygen, going back nitrogen and the volume concentration that the occlusion body volume concentrations is 45-65% is the unreactable gas of 0.5-1%.Preferably, described unreactable gas main component is an argon gas.
In a specific embodiment of the present invention, to accomplish after 5～20h after the said package member pressurizing window, the air pressure inside of described package member is 0.50-1 barometric pressure (under the normal temperature state, the 20-25 deg.c).
In a specific embodiments of the present invention, this rice with air regulation packing method comprises the step that next coming in order carry out: 1) rice is filled in the said package member from top to bottom; 2) in said package member, charge into fresh-keeping gas, the inflation position is any place that the rice part is housed in the said package member, and the carbon-dioxide percent by volume of said fresh-keeping gas is 25-35%, and the percent by volume of oxygen is less than 21%; 3) gas to rice top in the said package member carries out pump-down process; 4) said package member is carried out pressurizing window.
Preferably, the described inflation of step 1) position promptly charges into fresh-keeping gas from the bottom up in the bottom of said package member, makes fresh-keeping gas can fill the space of rice as far as possible.
Step 2) aeration step, gas filled device can adopt this area conventional gas filled device (the inflation parameter: inflation pressure, flow of aerating air and time look packing specification and corresponding gas retention volume (RV) amount, specifically room temperature and decide).
The steps of exhausting of step 3) is preferably with the whole emptyings of air above the rice in the packaging bag.
Preferably, described fresh-keeping gas is except CO2 with the oxygen, and going back nitrogen and the volume concentration that the occlusion body volume concentrations is 45-65% is the unreactable gas of 0.5-1%.
In a specific embodiments of the present invention, the packaging bag of described package member for processing by the flexible packaging material.Described flexible packaging material is non-rigid and material with air-tightness effect, the airtight material that can be used in the rice gas flushing pouch that can select those skilled in the art to know.Preferably, described packaging bag is the vinyon packaging bag.Described poly-vinyl (PE) plastic packaging bag.
According to the present packaging material form of conventional rice package bag (for example can with reference to the packaging material of the imperial fish products board of gold packaging bag) on the market, in general, the packaging material internal dimensions that 0.68kg specification rice packaging product is adopted is about 290mm*150mm; 2.5kg the packaging material internal dimensions that specification rice packaging product is adopted is about 375mm*255mm; The packaging material internal dimensions that 5kg specification rice packaging product is adopted is about 535mm*300mm; The packaging material internal dimensions that 10kg specification rice packaging product is adopted is about 585mm*370mm.
The present invention provides the rice packaging product that adopts above-mentioned rice with air regulation packing method to obtain on the other hand.
Description of drawings
Fig. 1 be ageing after 60 days each gas concentration lwevel to the influence of rice aliphatic acid.
Fig. 2 be ageing after 30 days each gas concentration lwevel to the influence of rice organoleptic quality.
The specific embodiment
In order more to be expressly understood technology contents of the present invention, the special following examples of lifting specify.
The volume numerical value that is occurred in following examples, what do not specify is the volume numerical value under the normal temperature and pressure; Gas concentration does not specify is volume concentration.
In the used fresh-keeping gas, the carbon dioxide that is mixed is the food CO2, purity-99.992*10 in following examples
-2V/V, free from extraneous odour, aqueous water, oil do not detect, aqueous vapor+ethanol content＜0.005*10
-2M/m.
The rice packaging method concrete steps that adopted in following examples are following:
1) rice is filled in the packaging bag of corresponding specification from top to bottom; 2) in packaging bag, charge into fresh-keeping gas; The inflation position is the bottom of packaging bag; (the inflation parameter: inflation pressure is a little more than a barometric pressure (0.18Mpa) for the conventional gas filled device of gas filled device employing this area; Temperature is a normal temperature, and flow of aerating air and time look packing specification and corresponding gas retention volume (RV) amount and decides); 3) gas to rice top in the packaging bag carries out pump-down process (with the whole emptyings of air of rice top in the packaging bag); 4) each opening of packaging bag being carried out pressurizing window handles.
Embodiment 1 different gas concentration lwevels are to preserving rice, and mildew-resistant suppresses the influence that worm's ovum is grown
Totally 7 experimental group; Every group is filled to packaging material with 0.68kg rice (the little raised path between farm fields rice in golden imperial fish autumn fields) and is of a size of in the packaging bag (packaging bag of golden imperial fish autumn fields little raised path between farm fields brand 0.68kg specification) of 290mm*150mm; Packing method is referring to above-mentioned; The packaging product of each experimental group, during pressurizing window, volume of gas (gas reservation amount) is 432.5ml in the packaging bag.
Every group of fresh-keeping gas that charges into, gas concentration lwevel is respectively 0%, 15%, and 25%; 35%, 45%, 75%, 95% (the 1st group of oxygen concentration is 21%; 2-5 group oxygen concentration is that 15%, the 6 group of oxygen concentration is that 10%, the 7 group of oxygen concentration is 3%; Every group of inert gas concentration is 0.6%, and remaining is nitrogen basically), 3 every group are parallel.
First test: above-mentioned each experimental group packaging product is put into 40 ℃ of temperature, and humidity is to carry out ageing under 80% the condition, and the results of regular determination fatty acid value also carries out organoleptic quality evaluation (result value is got 3 parallel mean values).
The measuring method of fatty acid value: the method for ginseng GB GB/T15684-1995 is measured, and numerical value unit is that mg/100g is the milligram number of per 100 gram sample institute fatty acids.
The evaluation method of organoleptic quality: the mode (3 samples are an evaluation group) of above-mentioned 7 samples using combination is carried out recycle ratio; Method with reference to GB GB/T15682-2008 is estimated; The sample meter 3 minutes of sensory evaluation total points first place in the every evaluation group; Second place meter 2 minutes, third meter 1 minute, each sample is participated in its sensory evaluation score value of value representation of number of times relatively in the total mark of recycle ratio in divided by it.
Second BT(batch testing): a certain amount of worm's ovum of inoculation in above-mentioned each experimental group packaging product, put into 28 ℃ of temperature, humidity is to carry out ageing under 75% the condition, measures egg hatch number (result value is got 3 parallel mean values).Above-mentioned test result is seen table 1 and Fig. 1-2.
The measuring method of egg hatch number: above-mentioned sample is unpacked, calculate the adult quantity that hatches.
In first test, ageing the 60th day, the 2nd experimental group was promptly filled 15%CO
2Map product (surpassed 25mg/100kg and quality deterioration occurred), its fatty acid value is greater than all the other each experimental group, no significant difference between the fatty acid value of all the other each experimental group.From table 1, Fig. 1, can know 15%CO
2It is relatively poor to suppress the fat oxidation ability, 25%-95%CO
2Controlled atmospheric packing suppress fat oxidation ability no significant difference.
Can know that from table 1, Fig. 2 gas concentration lwevel is 25%, 35%, 45%, and the effect of the better organoleptic quality of maintenance rice of 95% controlled atmospheric packing is better than not gas flush packaging, between each concentration to the no significant difference that influences of quality.Concentration is that 15%, 75% controlled atmospheric packing fresh-keeping effect is not obvious.
Can know that from table 1 controlled atmospheric packing all can suppress the growth of worm's ovum, not have significant difference between each gas concentration lwevel of this inhibit function.
Simultaneously, from experiment, can learn 15%CO
2-95%CO
2Controlled atmospheric packing certain mould fungus inhibition energy for growth is arranged, and no significant difference between each concentration.
The different gas concentration lwevels of table 1 are hatched the number influence to fatty acid value, sensory evaluation, worm's ovum
Annotate: 1, fatty acid value is the testing result of promoting ageing after 60 days.
2, sensory evaluation result is promoting ageing result after 30 days, and the sensory evaluation mark is high more, shows that edible quality is good more
3, data are the aviation value of parallel sample in each group among the figure.
Experiment conclusion: under the certain situation of gas volume; Gas concentration lwevel is that the rice with air regulation packing of 25%-35% has the better inhibited fat oxidation; Mildew-resistant suppresses the effect that worm's ovum is grown, and this effect and gas concentration lwevel are that the rice with air regulation packing of 45%-95% is more or less the same.But the mark of sensory evaluation is very high, and the edible quality of rice is higher than the controlled atmospheric packing of 45-75% and the rice with air regulation of gas concentration lwevel 95% is packed quite.
And gas concentration lwevel be 25%-35% rice with air regulation packing since air consumption reduce, can economize on significantly pneumatolytic this, enhance productivity.
Therefore, take all factors into consideration inhibition fat oxidation in the above-mentioned rice preservation, mildew-resistant, press down the effect and the cost of worm, edible quality aspect, gas concentration lwevel is that 25%-35% is best in the rice with air regulation packing.
Embodiment 2
5kg rice (the little raised path between farm fields rice in golden imperial fish autumn fields) is filled to packaging material is of a size of in the packaging bag (the little raised path between farm fields brand in golden imperial fish autumn fields) of 535mm*300mm, packing method is referring to above-mentioned, during pressurizing window; Volume of gas (gas reservation amount) is 3300ml in the packaging bag; The CO2 volume concentration is 25%, and the carrier of oxygen volume concentrations is 15%, and the nitrogen volume concentrations is 56%; The unreactable gas volume concentration is about 0.7%, and remainder is a small amount of impurities gas.
The present embodiment map product is carried out ageing experiment (experimental technique is with embodiment 1), and this controlled atmospheric packing of experiment proof has good fresh-keeping, and mildew-resistant suppresses the effect that worm's ovum is grown.
The present embodiment map product, after the 12-24 after pressurizing window hour, its air pressure inside is basicly stable, and (the temporary transient at present no suitable method of air pressure inside is measured; But the contriver estimates that according to the common practise and the visual observation of this area air pressure inside is a little less than 1 barometric pressure, about about 0.8-0.9 barometric pressure); Packaging bag is in wraps form (somewhat similar vacuum packaging; But load not as vacuum packet), the packaging bag degree of tightness of product is suitable, does not occur flat bag or breakage of packages basically in the transportation; Guaranteed the conformability of product appearance, solved behind the packaging products in boxes swell and stored problems such as the later stage casing subsides.
Embodiment 3
2.5kg rice (the little raised path between farm fields rice in golden imperial fish autumn fields) is filled to packaging material is of a size of in the packaging bag (the little raised path between farm fields brand in golden imperial fish autumn fields) of 375mm*255mm, packing method is referring to above-mentioned, during pressurizing window; Volume of gas (gas reservation amount) is 1700ml in the packaging bag; The CO2 volume concentration is 30%, and the carrier of oxygen volume concentrations is 14%, and the nitrogen volume concentrations is 52%; The unreactable gas volume concentration is about 0.6%, and remainder is a small amount of impurities gas
The present embodiment map product is carried out ageing experiment (experimental technique is with embodiment 1), and this controlled atmospheric packing of experiment proof has good fresh-keeping, and mildew-resistant suppresses the effect that worm's ovum is grown.
The present embodiment map product, after the 6-10 after pressurizing window hour, its air pressure inside is basicly stable, and (the temporary transient at present no suitable method of air pressure inside is measured; But the contriver estimates that according to the common practise and the visual observation of this area air pressure inside is a little less than 1 barometric pressure, about about 0.8-0.9 barometric pressure); Packaging bag is in wraps form (somewhat similar vacuum packaging; But load not as vacuum packet), the packaging bag degree of tightness of product is suitable, does not occur flat bag or breakage of packages basically in the transportation; Guaranteed the conformability of product appearance, solved behind the packaging products in boxes swell and stored problems such as the later stage casing subsides.
Embodiment 4
10kg rice (the little raised path between farm fields rice in golden imperial fish autumn fields) is filled to packaging material is of a size of in the packaging bag (the little raised path between farm fields brand in golden imperial fish autumn fields) of 585mm*370mm, packing method is referring to above-mentioned, during pressurizing window; Volume of gas (gas reservation amount) is 6300ml in the packaging bag, and the CO2 volume concentration is 28%; The carrier of oxygen volume concentrations is 14.5%; The nitrogen volume concentrations is 54%, and the unreactable gas volume concentration is about 0.6%, and remainder is a small amount of impurities gas.
The present embodiment map product is carried out ageing experiment (experimental technique is with embodiment 1), and this controlled atmospheric packing of experiment proof has good fresh-keeping, and mildew-resistant suppresses the effect that worm's ovum is grown.
The present embodiment map product, after the 24-30 after pressurizing window hour, its air pressure inside is basicly stable, and (the temporary transient at present no suitable method of air pressure inside is measured; But the contriver estimates that according to the common practise and the visual observation of this area air pressure inside is a little less than 1 barometric pressure, about about 0.8-0.9 barometric pressure); Packaging bag is in wraps form (somewhat similar vacuum packaging; But load not as vacuum packet), the packaging bag degree of tightness of product is suitable, does not occur flat bag or breakage of packages basically in the transportation; Guaranteed the conformability of product appearance, solved behind the packaging products in boxes swell and stored problems such as the later stage casing subsides.
In this specification sheets, the present invention is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification sheets and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (12)
1. rice with air regulation packing method; This method comprises at least rice placed the package member of being processed by bubble-tight packing, and in said package member, charges into fresh-keeping gas, at last said package member carried out the step of pressurizing window; It is characterized in that; During pressurizing window, in the internal gas of said package member, carbon-dioxide percent by volume is 16-40%.
2. method according to claim 1 is characterized in that, in the internal gas of said package member, carbon-dioxide percent by volume is 25-30%, and the percent by volume of oxygen is less than 21%.
3. method according to claim 2; It is characterized in that; During pressurizing window; The ratio of the total mass of the inner rice of said package member internal gas cumulative volume and said package member is 500ml/kg～700ml/kg, and the numerical value that calculates the internal gas cumulative volume that this ratio adopts is with the volume metering numerical value of this internal gas under standard condition STP (0 ℃, one barometric pressure).
4. method according to claim 3 is characterized in that, during pressurizing window, in the internal gas of said package member, except CO2 with the oxygen, going back nitrogen and the volume concentration that the occlusion body volume concentrations is 45-65% is the unreactable gas of 0.5-1%.
5. according to claim 3 or 4 described methods, it is characterized in that accomplish after 5～20h after the said package member pressurizing window, the air pressure inside of described package member is 0.50-1 barometric pressure (under the normal temperature state).
6. according to any described method among the claim 2-4, it is characterized in that this rice with air regulation packing method comprises the step that next coming in order carry out: 1) rice is filled in the said package member from top to bottom; 2) in said package member, charge into fresh-keeping gas, the inflation position is any place that the rice part is housed in the said package member, and the carbon-dioxide percent by volume of said fresh-keeping gas is 25-35%, and the percent by volume of oxygen is less than 21%; 3) gas to rice top in the said package member carries out pump-down process; 4) said package member is carried out pressurizing window.
7. method according to claim 6 is characterized in that, described fresh-keeping gas is except CO2 with the oxygen, and going back nitrogen and the volume concentration that the occlusion body volume concentrations is 45-65% is the unreactable gas of 0.5-1%.
8. method according to claim 6 is characterized in that, described inflation position is in the bottom of said package member.
9. according to any described method among the claim 1-4, it is characterized in that of the packaging bag of described package member for processing by the flexible packaging material.
10. method according to claim 9 is characterized in that, described package member is the vinyon packaging bag.
11., it is characterized in that during pressurizing window, being packaged with 0.68kg rice and cumulative volume in the described package member is the internal gas of 380-420ml (measuring numerical value under the standard condition) according to any described method among the claim 1-4; Perhaps, be packaged with the internal gas that 2.5kg rice and cumulative volume are 1520-1600ml (measuring numerical value under the standard condition) in the described package member; Perhaps, be packaged with the internal gas that 5kg rice and cumulative volume are 2950-3100ml (measuring numerical value under the standard condition) in the described package member; Perhaps, be packaged with the internal gas that 10kg rice and cumulative volume are 5900-6100ml (measuring numerical value under the standard condition) in the described package member.
12. one kind is adopted any rice with air regulation packaging product that described method obtains among the power 1-11.
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| CN104760720A (en) * | 2014-01-08 | 2015-07-08 | 邓彬 | Air conditioned storage technology of traditional Chinese medicinal materials of Chinese caterpillar funguses, pseudo-ginseng, rhizoma gastrodiae and the like |
| CN104843226A (en) * | 2015-04-10 | 2015-08-19 | 刘佳 | Grain packaging method and device for grain production line |
| CN104920602A (en) * | 2015-06-23 | 2015-09-23 | 南通季和米业有限责任公司 | An organic rice storage technology |
| CN105941618A (en) * | 2016-05-24 | 2016-09-21 | 常熟市虞盛农产品专业合作社 | Fresh-keeping process capable of achieving long-term mildew prevention and bacteria resisting of rice |
| CN106975532A (en) * | 2016-01-18 | 2017-07-25 | 徐蕴山 | Clean rice and its production method that a kind of appropriateness is milled being rich in nutrition |
| CN107261968A (en) * | 2017-08-16 | 2017-10-20 | 贵州省科创气体有限公司 | A kind of preserving rice gas and its compound method and device for formulating |
| CN107668198A (en) * | 2017-09-13 | 2018-02-09 | 安徽鑫泉米业有限公司 | A kind of organic rice keeping storage method of fresh |
| CN111426809A (en) * | 2020-04-28 | 2020-07-17 | 四川省食品发酵工业研究设计院 | Method for determining CO required in rice package2Method of concentration |
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| CN104760720A (en) * | 2014-01-08 | 2015-07-08 | 邓彬 | Air conditioned storage technology of traditional Chinese medicinal materials of Chinese caterpillar funguses, pseudo-ginseng, rhizoma gastrodiae and the like |
| CN104843226A (en) * | 2015-04-10 | 2015-08-19 | 刘佳 | Grain packaging method and device for grain production line |
| CN104920602A (en) * | 2015-06-23 | 2015-09-23 | 南通季和米业有限责任公司 | An organic rice storage technology |
| CN106975532A (en) * | 2016-01-18 | 2017-07-25 | 徐蕴山 | Clean rice and its production method that a kind of appropriateness is milled being rich in nutrition |
| CN105941618A (en) * | 2016-05-24 | 2016-09-21 | 常熟市虞盛农产品专业合作社 | Fresh-keeping process capable of achieving long-term mildew prevention and bacteria resisting of rice |
| CN107261968A (en) * | 2017-08-16 | 2017-10-20 | 贵州省科创气体有限公司 | A kind of preserving rice gas and its compound method and device for formulating |
| CN107261968B (en) * | 2017-08-16 | 2018-07-13 | 贵州省科创气体有限公司 | A kind of preserving rice gas and its preparation method |
| CN107668198A (en) * | 2017-09-13 | 2018-02-09 | 安徽鑫泉米业有限公司 | A kind of organic rice keeping storage method of fresh |
| CN111426809A (en) * | 2020-04-28 | 2020-07-17 | 四川省食品发酵工业研究设计院 | Method for determining CO required in rice package2Method of concentration |
| CN111426809B (en) * | 2020-04-28 | 2021-08-10 | 四川省食品发酵工业研究设计院有限公司 | Method for determining CO required in rice package2Method of concentration |
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Effective date of registration: 20211227 Address after: No. 118, Gaodong Road, Pudong New Area, Shanghai 200137 Patentee after: WILMAR (SHANGHAI) BIOTECHNOLOGY RESEARCH & DEVELOPMENT CENTER Co.,Ltd. Address before: 066206 No. 1, Jinhai Road, East District, Qinhuangdao Economic and Technological Development Zone, Qinhuangdao City, Hebei Province Patentee before: Qinhuangdao Goldensea Foodstuff Industries Co.,Ltd. |