CN116195626A - Rice treatment method capable of prolonging storage time - Google Patents

Rice treatment method capable of prolonging storage time Download PDF

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Publication number
CN116195626A
CN116195626A CN202211713553.2A CN202211713553A CN116195626A CN 116195626 A CN116195626 A CN 116195626A CN 202211713553 A CN202211713553 A CN 202211713553A CN 116195626 A CN116195626 A CN 116195626A
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Prior art keywords
rice
polishing
storage time
mass ratio
acetic acid
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Inventor
潘仁飞
黄其芹
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Hexian Wangu Grain And Oil Co ltd
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Hexian Wangu Grain And Oil Co ltd
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/02—Preserving by heating
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/14—Coating with a protective layer; Compositions or apparatus therefor
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/16—Preserving with chemicals
    • A23B9/18—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B9/20—Preserving with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B9/00—Preservation of edible seeds, e.g. cereals
    • A23B9/16—Preserving with chemicals
    • A23B9/24—Preserving with chemicals in the form of liquids or solids
    • A23B9/26—Organic compounds; Microorganisms; Enzymes
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Cereal-Derived Products (AREA)

Abstract

The invention relates to the technical field of rice processing, and discloses a rice processing method for prolonging storage time, which comprises the following steps: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing; the polishing is carried out twice, warm water is added during the first polishing, and polishing liquid is added during the second polishing; the rice treated by the treatment method can greatly prolong the storage time, the invention improves the storage time of the rice mainly by polishing the rice, particularly, the rice is polished by water, and the damage repair can be carried out mainly in the polishing process of the rice, so that the smoothness of the rice can be improved, and meanwhile, the storage time of the rice can be prolonged.

Description

Rice treatment method capable of prolonging storage time
Technical Field
The invention relates to the technical field of rice processing, in particular to a rice processing method for prolonging storage time.
Background
The rice is a finished product prepared by the working procedures of cleaning, hulling, finishing finished rice products and the like, and contains approximately 64% of nutrient substances and more than 90% of nutrient elements required by human bodies.
Rice is one of the most difficult varieties to store, and aging and mildew occur in the storage process because the storage technology is not in place for a long time.
In order to facilitate storage, the finished rice is stored in more places, the protein content in the rice is about 8%, the starch content is more than 80%, the rice has rich nutritional value, the rice needs to be processed before storage, especially when the rice is polished, the rice is extremely easy to damage, the rice endosperm is easy to directly contact with the external environment due to damage, the rice endosperm is aged and degenerated continuously along with the extension of the storage time, and even mildews in the storage process, so that the storage stability of the rice is greatly reduced, and the storage time is obviously shortened.
Based on this, we propose a rice treatment method for prolonging the storage time, which is hoped to solve the defects in the prior art.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a rice treatment method for prolonging the storage time.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions:
a rice treatment method for extending storage time, comprising: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing;
the polishing is carried out twice, warm water is added in the first polishing, and polishing liquid is added in the second polishing.
As a further technical scheme, the temperature of the warm water added in the first polishing treatment is 60-65 ℃.
As a further technical scheme, the polishing solution preparation method comprises the following steps:
adding trimethyl chitosan into glacial acetic acid solution, stirring uniformly, adding radix Scutellariae extract and sodium alginate, stirring uniformly to obtain mixed solution, and adding water according to the mass ratio of 1:20 to obtain polishing solution.
As a further technical scheme: the mixing mass ratio of the trimethyl chitosan to the glacial acetic acid solution is 1:10-15;
the mass fraction of the glacial acetic acid solution is 10%.
As a further technical scheme, the mixing mass ratio of the radix scutellariae extract to the sodium alginate is 2:1;
the mixing mass ratio of the sodium alginate to the glacial acetic acid solution is 1.5-2:10.
As a further technical scheme, the radix scutellariae extract is obtained by supercritical carbon dioxide extraction.
As a further technical scheme: the gas filled by the inflation is mixed gas;
the mixed gas is formed by mixing nitrogen and carbon dioxide.
(III) beneficial effects
Compared with the prior art, the rice treatment method for prolonging the storage time has the following beneficial effects:
the rice treated by the treatment method can greatly prolong the storage time, the invention mainly improves the storage time of the rice by polishing the rice, particularly, the rice is polished by water, the damage repair can be carried out in the polishing process of the rice, the smoothness of the rice can be improved, the storage time of the rice can be prolonged, and the polishing treatment is carried out by special polishing liquid after the primary polishing treatment, so that a layer of covering film is formed on the surface of the rice, thereby inhibiting the respiration of the rice, inhibiting the proliferation of microorganisms, further delaying the aging of the rice in the storage process and prolonging the storage time.
Drawings
FIG. 1 is a graph showing the change in fatty acid value of rice over time;
FIG. 2 shows the change in fatty acid value after 120d of storage for various plasma treatment times;
FIG. 3 is a graph showing the effect of different gas protections on catalase activity during rice storage.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
A rice treatment method for extending storage time, comprising: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing;
the plasma treatment is carried out by adopting an HD-2N type plasma seed treatment machine: helium is adopted as working gas, capacitive coupling glow discharge is adopted, the space between plates is 5cm, the system is vacuumized to 15Pa, the plasma treatment power is 350W, and the rice treatment time is 40s;
the polishing is carried out twice, and warm water is added in the first polishing, wherein the mass ratio of the warm water to the rice is 1:100; and in the second polishing, adding polishing solution, wherein the mass ratio of the polishing solution to the rice is 1:80-90.
The water adding polishing treatment is mainly to raise the temperature of the surface of the rice by the grinding pressure and friction heating in the polishing machine, and the high-temperature gelatinization of the starch on the surface of the rice can be promoted by the temperature rise, and when the gelatinized starch is rubbed, the damaged place of the surface of the rice is continuously filled and supplemented completely, so that the surface of the rice is in a smooth state.
After the water adding polishing treatment is performed, the damage of the surface of the rice is mainly repaired, and then the polishing solution prepared by the invention is polished for the second time, so that a layer of covering film can be generated on the surface of the rice, the covering film is generated, and the rice can be isolated from being contacted with the external environment, so that the respiration of the rice is inhibited under the condition that the internal rice is anaerobic, the nutrition consumption of the rice is reduced, the breeding of bacteria and fungi is avoided, the storage time is prolonged, the covering film can be removed by water washing, the convenience and the rapidness are realized, and meanwhile, the influence on a human body is avoided.
In the process of rice storage, the quality of the rice is continuously reduced and the aging phenomenon is continuously deepened due to the action of various bacteria and fungi along with the extension of time, meanwhile, the brightness of the rice is continuously reduced, the fragrance of the rice is reduced, the fatty acid value is started to rise, the quality of the cooked rice is continuously reduced after the rice is cooked, the instability of the storage property of the rice is indicated, the aging speed of the rice can be greatly delayed after the rice is treated by the rice storage method, the storage time of the rice is prolonged, and the cooked quality of the rice can be kept at a higher level within a long time.
The temperature of the warm water added in the first polishing treatment is 60-65 ℃.
The preparation method of the polishing solution comprises the following steps:
adding trimethyl chitosan into glacial acetic acid solution, stirring uniformly, adding radix Scutellariae extract and sodium alginate, stirring uniformly to obtain mixed solution, and adding water according to the mass ratio of 1:20 to obtain polishing solution.
The mixing mass ratio of the trimethyl chitosan to the glacial acetic acid solution is 1:10-15;
the mass fraction of the glacial acetic acid solution is 10%.
The mixing mass ratio of the radix scutellariae extract to the sodium alginate is 2:1;
the mixing mass ratio of the sodium alginate to the glacial acetic acid solution is 1.5-2:10.
The radix Scutellariae extract is obtained by supercritical carbon dioxide extraction.
One factor causing the shortening of the storage time of the rice is mildew of the rice, and main strains causing the mildew of the rice are aspergillus kawachii, aspergillus terreus, aspergillus flavus, aspergillus versicolor, penicillium arcicum and the like.
The gas filled by the inflation is mixed gas;
the mixed gas is mixed by nitrogen and carbon dioxide, wherein the mixing volume ratio of the nitrogen to the carbon dioxide is 2:1, and the mixed gas of the nitrogen and the carbon dioxide can inhibit the respiration of rice, and can inhibit the respiration of microorganisms and reduce the reproductive performance of microorganisms, so that the storage time of the rice is prolonged.
The polishing machine equipment parameters adopted by the invention are as follows:
(1) Model KFP300C
(2) Capacity/(kg.h) -1 ） 8000~10000；
(3) Air volume/(m3.h) -1 ） 8000~10000；
(4) Static pressure/Pa 3000-3500;
(5) Compressed air consumption/(m) 3 ·min -1 ） 0.09~0.15；
(6) The compression air pressure/MPa is 0.6;
(7) Polishing roll accuracy/mm 170;
(8) Auger/mm 180 x 224;
(9) Pitch/mm 56;
(10) Spindle rotation speed/(r. Min) -1 ） 750～850；
(11) power/kW 55 x 2 (motor Y250M-4):
the following are specific examples:
example 1
A rice treatment method for extending storage time, comprising: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing; the plasma treatment is carried out by adopting an HD-2N type plasma seed treatment machine: helium is adopted as working gas, capacitive coupling glow discharge is adopted, the space between plates is 5cm, the system is vacuumized to 15Pa, the plasma treatment power is 350W, and the rice treatment time is 40s; the polishing is carried out twice, and the polishing is carried out twice, wherein warm water is added in the first polishing, and the mass ratio of the warm water to the rice is 1:100; and in the second polishing, adding polishing solution, wherein the mass ratio of the polishing solution to the rice is 1:80. The temperature of the warm water added in the first polishing treatment was 60 ℃. The preparation method of the polishing solution comprises the following steps: adding trimethyl chitosan into glacial acetic acid solution, stirring uniformly, adding radix Scutellariae extract and sodium alginate, stirring uniformly to obtain mixed solution, and adding water according to the mass ratio of 1:20 to obtain polishing solution. The mixing mass ratio of the trimethyl chitosan to the glacial acetic acid solution is 1:10; the mass fraction of the glacial acetic acid solution is 10%. The mixing mass ratio of the radix scutellariae extract to the sodium alginate is 2:1; the mixing mass ratio of the sodium alginate to the glacial acetic acid solution is 1.5:10. The radix Scutellariae extract is obtained by supercritical carbon dioxide extraction. The gas filled by the inflation is mixed gas; the mixed gas is formed by mixing nitrogen and carbon dioxide gas, wherein the mixing volume ratio of the nitrogen to the carbon dioxide gas is 2:1.
Example 2
A rice treatment method for extending storage time, comprising: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing; the plasma treatment is carried out by adopting an HD-2N type plasma seed treatment machine: helium is adopted as working gas, capacitive coupling glow discharge is adopted, the space between plates is 5cm, the system is vacuumized to 15Pa, the plasma treatment power is 350W, and the rice treatment time is 40s; the polishing is carried out twice, and the polishing is carried out twice, wherein warm water is added in the first polishing, and the mass ratio of the warm water to the rice is 1:100; and in the second polishing, adding polishing solution, wherein the mass ratio of the polishing solution to the rice is 1:85. The temperature of the warm water added in the first polishing treatment was 62 ℃. The preparation method of the polishing solution comprises the following steps: adding trimethyl chitosan into glacial acetic acid solution, stirring uniformly, adding radix Scutellariae extract and sodium alginate, stirring uniformly to obtain mixed solution, and adding water according to the mass ratio of 1:20 to obtain polishing solution. The mixing mass ratio of the trimethyl chitosan to the glacial acetic acid solution is 1:12; the mass fraction of the glacial acetic acid solution is 10%. The mixing mass ratio of the radix scutellariae extract to the sodium alginate is 2:1; the mixing mass ratio of the sodium alginate to the glacial acetic acid solution is 1.8:10. The radix Scutellariae extract is obtained by supercritical carbon dioxide extraction. The gas filled by the inflation is mixed gas; the mixed gas is formed by mixing nitrogen and carbon dioxide gas, wherein the mixing volume ratio of the nitrogen to the carbon dioxide gas is 2:1.
Example 3
A rice treatment method for extending storage time, comprising: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing; the plasma treatment is carried out by adopting an HD-2N type plasma seed treatment machine: helium is adopted as working gas, capacitive coupling glow discharge is adopted, the space between plates is 5cm, the system is vacuumized to 15Pa, the plasma treatment power is 350W, and the rice treatment time is 40s; the polishing is carried out twice, and the polishing is carried out twice, wherein warm water is added in the first polishing, and the mass ratio of the warm water to the rice is 1:100; and in the second polishing, adding polishing solution, wherein the mass ratio of the polishing solution to the rice is 1:90. The temperature of the warm water added in the first polishing treatment was 65 ℃. The preparation method of the polishing solution comprises the following steps: adding trimethyl chitosan into glacial acetic acid solution, stirring uniformly, adding radix Scutellariae extract and sodium alginate, stirring uniformly to obtain mixed solution, and adding water according to the mass ratio of 1:20 to obtain polishing solution. The mixing mass ratio of the trimethyl chitosan to the glacial acetic acid solution is 1:15; the mass fraction of the glacial acetic acid solution is 10%. The mixing mass ratio of the radix scutellariae extract to the sodium alginate is 2:1; the mixing mass ratio of the sodium alginate to the glacial acetic acid solution is 2:10. The radix Scutellariae extract is obtained by supercritical carbon dioxide extraction. The gas filled by the inflation is mixed gas; the mixed gas is formed by mixing nitrogen and carbon dioxide gas, wherein the mixing volume ratio of the nitrogen to the carbon dioxide gas is 2:1.
Measurement of rice moisture: reference is made to GB/T21305-2007 standard:
at a temperature of 10 ℃, storing for 60d and 120d, and respectively detecting the change of the water content:
TABLE 1
Figure 388806DEST_PATH_IMAGE002
As can be seen from Table 1, the rice treated by the method of the present invention has a limited reduction in water content after long-term storage, and thus the rice treated by the method of the present invention can maintain a relatively stable storage property.
The fatty acid value of rice was measured on the side of the sample based on example 1 by referring to GB/T20569-2006, and the change in fatty acid value of rice was observed with the storage time, as shown in FIG. 1.
The fatty acid value of the rice was measured on the side of the fatty acid value, and the change in the fatty acid value after 120d storage was compared with the plasma treatment time based on the sample of example 1 by referring to GB/T20569-2006 standard, as shown in FIG. 2.
Based on example 1, the effect of different gas protection on catalase activity during rice storage was compared as shown in FIG. 3;
comparative example 1 was encapsulated with pure nitrogen and comparative example 2 was encapsulated with pure carbon dioxide.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. A rice treatment method for extending storage time, comprising: polishing rice, carrying out plasma treatment on the polished rice, bagging, inflating and sealing;
the polishing is carried out twice, warm water is added in the first polishing, and polishing liquid is added in the second polishing.
2. The method for treating rice for an extended period of time as recited in claim 1, wherein the warm water added in the first polishing treatment is at a temperature of 60-65 ℃.
3. The method for treating rice for extended storage time according to claim 1, wherein the polishing liquid is prepared by:
adding trimethyl chitosan into glacial acetic acid solution, stirring uniformly, adding radix Scutellariae extract and sodium alginate, stirring uniformly to obtain mixed solution, and adding water according to the mass ratio of 1:20 to obtain polishing solution.
4. A rice treatment process for extending storage time according to claim 3, wherein: the mixing mass ratio of the trimethyl chitosan to the glacial acetic acid solution is 1:10-15;
the mass fraction of the glacial acetic acid solution is 10%.
5. A rice treatment method for prolonging storage time according to claim 3, wherein the mixing mass ratio of the radix scutellariae extract and sodium alginate is 2:1;
the mixing mass ratio of the sodium alginate to the glacial acetic acid solution is 1.5-2:10.
6. The method for treating rice with prolonged storage time as claimed in claim 5, wherein the extract of radix Scutellariae is obtained by supercritical carbon dioxide extraction.
7. A rice treatment method for extending storage time according to claim 1, wherein: the gas filled by the inflation is mixed gas;
the mixed gas is formed by mixing nitrogen and carbon dioxide.
CN202211713553.2A 2022-12-30 2022-12-30 Rice treatment method capable of prolonging storage time Pending CN116195626A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1919087A (en) * 2006-09-13 2007-02-28 蔡林玲 Method for extending fresh-keeping time and preservation time of fresh rice-flour noodles and cutting-noodles
CN111657421A (en) * 2020-05-11 2020-09-15 国家粮食和物资储备局科学研究院 Application of method for treating rice by using cold plasma in improving rice quality
CN111955542A (en) * 2020-09-09 2020-11-20 安徽省东博米业有限公司 Rice fresh-keeping storage process
CN113545390A (en) * 2021-06-25 2021-10-26 浙江万里学院 Method for prolonging storage period of rice

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1919087A (en) * 2006-09-13 2007-02-28 蔡林玲 Method for extending fresh-keeping time and preservation time of fresh rice-flour noodles and cutting-noodles
CN111657421A (en) * 2020-05-11 2020-09-15 国家粮食和物资储备局科学研究院 Application of method for treating rice by using cold plasma in improving rice quality
CN111955542A (en) * 2020-09-09 2020-11-20 安徽省东博米业有限公司 Rice fresh-keeping storage process
CN113545390A (en) * 2021-06-25 2021-10-26 浙江万里学院 Method for prolonging storage period of rice

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