Physical method for preventing and controlling mould fungi of grain

A physical method and grain technology, applied in the direction of preserving seeds through drying, and preserving seeds through radiation/electrical treatment, etc., can solve the problems of environmental secondary pollution, uncontrollable sterilization quality, unfavorable green ecological grain storage requirements, etc. Achieve the effects of reducing environmental pollution, simple and easy process, and reducing impact

Inactive Publication Date: 2017-06-13
NANJING UNIV OF FINANCE & ECONOMICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a physical method for preventing and controlling the growth of mold in grains by using pulsed strong light equipment, so as to solve the problems in the prior art that excess chemical residues will be produced in grains after sterilization, which is not only uncontrollable Bacterial quality, and cause secondary pollution to the environment, which is not conducive to the technical problems of the requirements of green ecological grain storage

Method used

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  • Physical method for preventing and controlling mould fungi of grain
  • Physical method for preventing and controlling mould fungi of grain
  • Physical method for preventing and controlling mould fungi of grain

Examples

Experimental program
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Effect test

Embodiment 1

[0025] 1. Selection of grain: select rice with an initial moisture content of 19.5% and a storage period of about one year, and the rice has not been dried.

[0026] 2. Sterilization by pulsed strong light: spread the rice evenly on the surface of 28*17cm 2 In the stainless steel tray, in order to ensure the uniformity of the pulsed light irradiation on the grain particles, the rice should be covered as much as possible on the surface of the tray during the process of placing the rice. Place the prepared tray in the sterilization cavity of the pulsed strong light equipment, the vertical distance of the flash is 12cm, and the sterilizing intensity of the pulsed strong light is 0.4J / cm 2 , flash time 60s, 3 times per second.

[0027] 3. After irradiation, dry it with hot air for 3 hours, and choose suitable conditions to put it into the warehouse for secondary storage.

Embodiment 2

[0029] 1. Selection of grains: select rice newly harvested in the season with an initial moisture of 17.8%, and the rice has not been dried.

[0030] 2. Sterilization by pulsed strong light: spread the rice evenly on the surface of 28*17cm 2 In the stainless steel tray, in order to ensure the uniformity of pulsed light irradiation on grain particles, during the process of placing rice, the rice should be covered as much as possible on the surface of the tray, and the prepared tray should be placed in the sterilization chamber of the pulsed strong light equipment, flashed The vertical distance is 12cm, and the sterilization intensity of pulsed strong light is 0.4J / cm 2 , flash time 60s, 3 times per second.

[0031] 3. After irradiation, dry for 3 hours in conjunction with infrared radiation, and select suitable conditions for storage.

Embodiment 3

[0033] 1. Grain selection: select wheat with an initial moisture content of 19.2%, and the wheat grains have not been dried.

[0034] 2. Sterilization by pulsed strong light: Spread the wheat evenly on the stainless steel tray of 28*17cm2. In order to ensure the uniformity of the irradiation of the pulsed light on the grain particles, the wheat should be covered as much as possible on the surface of the tray during the process of placing the wheat. Place the prepared tray in the sterilization cavity of the pulsed strong light equipment, the vertical distance of the flash is 12cm, the sterilizing intensity of the pulsed strong light is 0.4J / cm2, the flash time is 60s, and irradiate 3 times per second.

[0035] 3. After irradiation, according to the microwave drying for 3 hours, select the appropriate conditions to enter the warehouse for storage.

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Abstract

The invention discloses a physical method for preventing and controlling mould fungi of grain, and belongs to the technical field of farm product storage and processing. The method concretely comprises the following steps of A, quantificationally and uniformly laying the grain onto a container with good reflectivity or a conveying belt provided with a reflecting material to form a thin grain layer; B, performing pulse strong light treatment: putting a tray or a flat plate containing the grain onto a support frame; putting the tray or the flat plate into a pulse strong light device to be subjected to irradiation treatment; C, after the irradiation, controlling the moisture of the grain subjected to the pulse treatment to be lower than 14 percent by cooperating with other physical drying methods; conveying the grain into a cabin or a warehouse to be stored, or directly selling the grain. The method has the advantages that the pulse strong light sterilization effect on various grain such as cereals is obvious; the growth and the breeding of the mould fungi on the surface of the grain are controlled; the processing flow process is short; the technical process is simple and convenient; the implementation is easy; meanwhile, the environment-friendly performance is better.

Description

technical field [0001] The invention belongs to the technical field of storage and processing of agricultural products, and in particular relates to a physical method for preventing and controlling mold in grains by using pulsed strong light equipment to prevent and control mold growth in grains. Background technique [0002] In our country, the annual loss of stored grain due to insect mold pollution is as high as 20 billion catties. According to statistics, the average annual loss rate of my country's grain due to mildew and germination is more than 5%. Moldy grains produce aflatoxin, which is the deadliest biological carcinogen discovered so far. Long-term intake of moldy grains by the human body will undoubtedly lead to cancer. In order to control the excessive reproduction of mold during grain storage, storage companies often use drying methods to reduce the water activity to control the growth of microorganisms and use chemical fumigation. Live, just force it to be in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B9/06A23B9/08
CPCA23B9/06A23B9/08
Inventor 丁超裴永胜杨国峰
Owner NANJING UNIV OF FINANCE & ECONOMICS
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