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Technology of detection with microwave

A microwave detection and technology technology, applied in the application field of microwave in the food field, can solve problems such as lack of professional skills, harmful ethephon, and ethephon residues.

Inactive Publication Date: 2018-11-30
赵锦玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this can quickly accelerate the ripening effect, it will cause a large amount of ethephon residues, and the residual ethephon in excess concentration is harmful to the human body
[0006] A variety of detection methods can be used to judge whether there is excess ethephon residue on kiwifruit, but these methods often require professional instruments. Ordinary consumers have no access to these professional equipment and do not have these professional skills, so they cannot directly and effectively judge

Method used

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  • Technology of detection with microwave

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] With 3g of commercially available ethephon (Shanghai Huayi Group Huayuan Chemical Co., Ltd.) of 40% concentration water agent, without dilution, it is directly sprayed on the greenish green surface, with villous hairs on the surface, the hard raw kiwi fruit surface as a whole. Put the kiwi fruit sprayed with ethephon solution into a constant temperature ripening box at 15°C, take it out after 8 hours, put it into a microwave oven (Sanyo EM-L520P) at a room temperature of 12°C, set the power at 600 watts, and process for 15 seconds. Start the microwave. After the treatment, the kiwi fruit was taken out immediately, and the temperature (TA and TC) at A and C were measured with an infrared thermometer (Fluke MT4max type temperature gun). With the judgment condition of TC ≥ 39°C, it can be determined that the kiwi fruit has been ripened with ethephon with a concentration of more than 1000 ppm.

Embodiment 2

[0015] Commercially available ethephon with a concentration of 40% is diluted with water to 10 times the original volume to form a 4% concentration of ethephon solution. Spray 3 g of this solution on the green surface with villous hairs on the surface, and the whole is hard and solid. Kiwi surface. Put the kiwi fruit sprayed with ethephon solution into a constant temperature ripening box at 15°C, take it out after 12 hours, put it in a microwave oven at a room temperature of 12°C, set the power at 600 watts, and start the microwave oven for 15 seconds. Immediately after the treatment, the kiwifruit was taken out, and the temperature at A and C was measured with an infrared thermometer. The results are shown in Table 1. Since TA-TC=43°C, which meets the judgment condition of TA-TC≥39°C, it can be determined that the kiwifruit is used Ethephon at a concentration of more than 1000 ppm was used for ripening.

Embodiment 3

[0017] Commercially available ethephon with a concentration of 40% is diluted with water to 1000 times the original volume to form a 400 ppm concentration of ethephon solution. Spray 3 g of this solution on the surface of the dark green, villous hair on the surface, and the whole is hard and solid. Kiwi surface. Put the kiwi fruit sprayed with ethephon solution into a constant temperature ripening box at 15°C, take it out after 48 hours, put it into a microwave oven at a room temperature of 12°C, set the power at 600 watts, and start the microwave oven for 15 seconds. Immediately after the treatment, the kiwi fruit was taken out, and the temperature at A and C was measured with an infrared thermometer. The results are shown in Table 1. Since TA-TC=33°C, it does not meet the judgment condition of TA-TC≥39°C, and the concentration was determined not to be used More than 1000 ppm of ethephon for ripening.

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Abstract

The invention discloses a technology of detection with microwave, the technology of detection with microwave can be used for detecting concentration of ethephon used for accelerating the ripening of the kiwi fruit, firstly, a kiwi fruit sample is heated by microwave, temperature of different parts of the same kiwi fruit is measured, and according to range of temperature difference values, whetherthe kiwi fruit is subjected to ripening acceleration with the ethephon of which the concentration is more than 1000 ppm can be judged. The technology provided by the invention can quickly and effectively judge whether the kiwi fruit is treated with the ethephon of which the concentration exceeds a standard, and plays a role in the aspect of food sanitation and safety.

Description

technical field [0001] The invention relates to a microwave detection technology, in particular to a microwave application technology in the food field. Background technique [0002] Microwave is a kind of electromagnetic wave, which can generate high-frequency electromagnetic field, and the molecules in the dielectric material will have different tendencies as the frequency changes in such an electromagnetic field, and the different tendencies between molecules will generate heat. Microwaves can be used to heat food that contains water. [0003] After the immature kiwi fruit is picked, it is placed in a warehouse for storage, and ethephon is often used to accelerate the ripening before it goes on the market. Ethephon, a plant growth regulator, has physiological effects of accelerating maturation, shedding, senescence and promoting flowering. When used for ripening, soak or spray the fruit with ethephon solution and put it in the ripening room for ripening. The concentrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N1/44
CPCG01N1/44G01N25/20
Inventor 赵锦玲高丽王安桥
Owner 赵锦玲