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Insect disinfestation method performing radio frequency treatment on grain

A radio frequency treatment and radio frequency technology, which is applied in food preservation, food science, heating and preserving seeds, etc., can solve the problems of microwave energy consumption increase, reagent residue, uneven heating, etc., and achieve the effect of thorough insecticide and short treatment time

Inactive Publication Date: 2017-05-31
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional pest control methods for rice and paddy mainly include low temperature, controlled atmosphere, chemical fumigation, etc. Although these methods can inhibit the breeding of pests to a certain extent, they are difficult to kill insect eggs, and because of cumbersome operations and possible chemical pollution and reagent residues Questioned and rejected by people due to problems such as pests, and with the growing problem of insect resistance to pesticides, chemical storage applications have gradually been banned
In addition, new technologies such as high-temperature steam (80°C-100°C), irradiation technology, and microwave technology have also been applied to rice and rice to kill insects. Accepted by most consumers and microwave treatment has inherent limitations in penetration depth, uneven heating, increased microwave energy consumption, reduced protein content in rice, and increased blue value. Insect method has become a major task for scientists from all over the world

Method used

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  • Insect disinfestation method performing radio frequency treatment on grain
  • Insect disinfestation method performing radio frequency treatment on grain
  • Insect disinfestation method performing radio frequency treatment on grain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The application of radio frequency insecticidal treatment device (disclosed in the invention patent application with application number 201510234110.9) is used to process grain, and the specific steps are as follows:

[0022] (1) Pretreatment: select grains with complete grains, remove impurities and rotten grains therein, then encapsulate the samples in polyethylene plastic bags, and store them in a refrigerator at 4°C;

[0023] (2) Insertion of test worms: insert 25 live, robust test worms (mainly adults) of the same growth stage into polyethylene plastic containers containing 1 kg of grain (sterilized with ultraviolet light in advance);

[0024] (3) Cultivation of samples: putting the grains inserted into the test worms into a temperature of 28° C., and expanding and cultivating for 30 days in an incubator with a relative humidity of 40%;

[0025] (4) Constant sample temperature: Before starting the experiment, take another sample to be used in step (1) and place it ...

Embodiment 2

[0031] Grain is processed with reference to the method of embodiment 1, and its difference is, the cooling of step (7) sample: after radio frequency treatment, the sample that will be sealed and packaged with polyethylene plastic bag is placed on the natural condition that surface air velocity is 0.2m / s cooling down;

Embodiment 3

[0033] Grain is processed with reference to the method of embodiment 1, and its difference is, the preparation of step (5) experimental sample: in step (3), select live, robust adult 20 respectively to insert into the polythene that constant temperature sample is housed. In a vinyl plastic bag (UV sterilized in advance);

[0034] Step (6) RF treatment: place the sample bag containing adults on the conveyor belt at the center of the pole plate under the radio frequency treatment chamber, the operating frequency of the radio frequency treatment device is 27.12MHz, the power is 6Kw, the distance between the pole plates is 60mm, and the sample thickness The temperature is 25mm, the treatment time is 210s, the auxiliary temperature in the radio frequency treatment chamber is 50°C, the auxiliary temperature is provided by hot air ≥ 50°C, and an external hot air generator can be selected to collect the ambient air and pass it through a 5.6Kw electric heater Heating to the set tempera...

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Abstract

The invention discloses an insect disinfestation method performing radio frequency treatment on grain and belongs to the technical field of grain storage. The insect disinfestation method includes: using a radio frequency insect disinfestation and sterilizing continuous treatment device disclosed in patent application CN104782758A to performe radio frequency treatment on the grain after the grain is harvested or before the grain is stored, discharging samples out of a radio frequency cavity after the radio frequency treatment, and performing natural or forced air cooling under room temperature, wherein the radio frequency treatment can kill insect eggs, adult insets and larvae in a large amount of grain. The insect disinfestation method has the advantages that the method is low in energy consumption, high in automation level, evident in insect disinfestation effect, safe, nontoxic and free of odor, the original color, fragrance, smell, nutritional component and germination rate of the samples are hardly changed, and the storage period of the grain is prolonged greatly.

Description

technical field [0001] The invention relates to a method for killing insects by radio frequency treatment of grain, and belongs to the technical field of grain storage. Background technique [0002] Food is the basis for people's survival, and every country must have a certain amount of food reserves. According to statistics, the total grain output in the world reaches 589.57 million tons, and the loss of grain mildew and insect damage is nearly more than 50 million tons, accounting for about 10% of the total grain output, and the loss is serious. Rice is one of the most difficult grains to preserve. According to the statistics of the Food and Agriculture Organization of the United Nations (2006), 15% to 16% of rice in the world is lost every year due to improper storage and processing after harvest. There are about 39 countries in the world, and more than half of the world's population uses rice as a staple food. Asia has the strongest dependence on rice. my country is al...

Claims

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Application Information

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IPC IPC(8): A23B9/04A23B9/02
CPCA23B9/04A23B9/025
Inventor 赵伟赵义存杨瑞金颜文旭
Owner JIANGNAN UNIV
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