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Method for judging irradiation of product and dosage thereof

A product, irradiation technology, used in dosimeters, measuring devices, material analysis using wave/particle radiation, etc., can solve the problems of undetermined radiation dose, false positives, false negatives, etc., to reduce false negative results. Probability, accurate and rapid judgment, and the effect of improving detection sensitivity

Inactive Publication Date: 2011-04-13
JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to solve the problem that the existing method for judging whether a product has been irradiated is likely to cause false negative or false positive, thereby causing misjudgment. , a method that can not only determine the product irradiation but also determine the radiation dose

Method used

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  • Method for judging irradiation of product and dosage thereof
  • Method for judging irradiation of product and dosage thereof
  • Method for judging irradiation of product and dosage thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0058] Example 1: Beet sample irradiation and dose determination:

[0059] Select five batches of unirradiated sugar beet samples in advance according to the method of the first step above, each batch is divided into two parts, and one part of each batch is taken for a total of 5 parts for detection, and it is obtained: log(DEFT 0-1 ) = 6.48, log(APC 0-1 ) = 7.08, D C0-1 =log(DEFT 0-1 )-log(APC 0-1 )=-0.6,...,D C0-2 =-0.49,D C0-3 =-0.71,D C0-4 =-0.55,D C0-5 = -0.65, calculate

[0060] The other five samples in the five batches passed the sugar beet irradiation dose (ranging from 0 to 0.8kGy, 0.8>2×0.28) survival test, respectively: D 10-1 =0.24kGy,D 10-2 = 0.34kGy, D 10-3 =0.26kGy,D 10-4 = 0.30kGy, D 10-5 = 0.26kGy, calculate

[0061] 1) Beet sample 1 under inspection:

[0062] DEFT / APC method test results: log(DEFT)=6.29, log(APC)=4.32, Dc=1.97, because According to criterion 1, the sample has been treated with a dose greater than 0.28 / 2 = 0.14 kGy. ...

example 2

[0067] Example 2: Irradiation of yellow line fish samples and its dose determination:

[0068] Select five batches of unirradiated yellow-haired fish samples in advance according to the method of the first step above, each batch is divided into two parts, and one part of each batch is taken for a total of 5 parts for detection, and it is obtained: log(DEFT 0-1 ) = 10.65, log(APC 0-1 ) = 8.34, D C0-1 =log(DEFT 0-1 )-log(APC 0-1 )=2.31,...,D C0-2 =2.2,D C0-3 =2.40,D C0-4 =2.32,D C0-5 = 2.32, calculate

[0069] The other five samples in the five batches passed the survival test of yellow line fish irradiation dose (ranging from 0 to 4.0 kGy, 4.0>2×1.42), respectively: D 10-1 = 1.42kGy, D 10-2 = 1.30kGy, D 10-3 = 1.46kGy, D 10-4 = 1.44kGy, D 10-5 = 1.48kGy, calculate

[0070] 1) Sample 1 of the inspected yellow line fish:

[0071] DEFT / APC method test results: log(DEFT)=10.45, log(APC)=6.84, Dc=3.61, because According to criterion 2, it cannot be judged w...

example 3

[0076] Example 3: Irradiation and dose determination of black pepper samples:

[0077] Select five batches of unirradiated black pepper samples in advance according to the method of the first step above, each batch is divided into two parts, and one part of each batch is taken for a total of 5 parts for testing, and it is obtained: log(DEFT 0-1 ) = 6.92, log(APC 0-1 ) = 5.77, D C0-1 =log(DEFT 0-1 )-log(APC 0-1 )=1.15,...,D C0-2 =1.18,D C0-3 =1.20,D C0-4 =1.08,D C0-5 = 1.14, calculate

[0078] Another five samples in the five batches passed the black pepper class irradiation dose (range is 0~6.0kGy, 6.0>2×2.39) survival test, respectively: D 10-1 =2.39kGy,D 10-2 =2.44kGy,D 10-3 =2.22kGy,D 10-4 =2.31kGy, D 10-5 = 2.59kGy, calculate

[0079] 1) Detected black pepper sample 1

[0080] DEFT / APC test results: log(DEFT)=6.9, log(APC)=4.41, Dc=2.49, because According to criterion 3, it cannot be judged whether the sample has been treated with a dose > 2.0 kGy. ...

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Abstract

The invention relates to a method for judging the irradiation of a product and the dosage thereof, which is characterized by comprising the following steps of: firstly acquiring the mean value D0 of an unirradiated product with a direct epifluorescent filter technique (DEFT) and an aerobic plate count (APC) method, and meanwhile, determining the mean value D10 of same class products, wherein the mean value D0 is equal (Dc(0-1)+Dc(0-2)+......Dc(0-n)) / n, and the mean value D10 is equal to (Dc(10-1)+Dc(10-2)+......Dc(10-n)) / n; and setting four classes of judging standards by taking the difference value between Dc and the mean value of Dc0 of a detected sample as a judging reference, thereby achieving the purpose of detecting the irradiation of an actual product and the dosage thereof. The method can enhance the sensitivity and the accuracy of the traditional DEFT / APC method on detecting irradiated products and has important application value for an irradiation enterprise on daily controlling the quality of the irradiated product and a food production enterprise, a food sanitation supervision department and an import and export quarantine department on monitoring the quality safety of irradiated agricultural products (seasonings, dehydrated vegetables, aquatic products, and the like).

Description

technical field [0001] The invention relates to a food detection technology, in particular to a detection technology for testing whether food has been irradiated, in particular to a method for judging product radiation and its dosage. Background technique [0002] At present, food (including grain, oil, vegetables, meat products, non-staple food, poultry and egg products and other products that can be sterilized by radiation) irradiation technology is the main field of nuclear technology for civilian use. It uses γ-rays, X-rays and electrons. It can interact with food to achieve the purpose of killing insects and sterilizing bacteria, preventing mildew, improving food hygiene quality, maintaining nutritional quality and extending shelf life. Because food irradiation processing has unique advantages such as low energy consumption, no pollution, no residue, fast and convenient, it has been widely used at home and abroad. According to statistics, more than 50 countries in the ...

Claims

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Application Information

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IPC IPC(8): G01N23/00G01N15/10G01N15/14G01T1/02
Inventor 赵永富
Owner JIANGSU ACADEMY OF AGRICULTURAL SCIENCES
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