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Preparation method of fresh and live agricultural product pesticide residue detection sample

A technology for pesticide residue detection and agricultural products, which is applied in the field of preparation of samples for pesticide residue detection of fresh and live agricultural products, can solve the problems of inconsistent conclusions between initial inspection and re-inspection, waste of administrative resources of law enforcement units, affecting the results of inspection and re-examination, etc. Differences in degradation rates, preventing differences in test results, and avoiding disputes

Inactive Publication Date: 2018-11-06
国检测试控股集团(安徽)拓维检测服务有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The detection of pesticide residues in fresh and live agricultural products is an important control method to ensure the safety of food and agricultural products. Pesticide residues in isolated agricultural products will be degraded to varying degrees due to the influence of internal and environmental factors. Routine sampling, separation and storage will affect The results of the test review
At present, the conventional method of sampling pesticide residues in agricultural products is mainly to extract raw materials and divide them into test samples and backup samples, and store them in whole plant packaging (-20°C) at low temperature. Individual differences between samples may lead to inconsistent conclusions between initial inspection and re-inspection. It causes a great waste of administrative resources of law enforcement units; at the same time, it takes up a lot of cold storage space, which is not conducive to the random inspection of batches of agricultural products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, a kind of preparation method of fresh grape pesticide residue detection sample comprises the following steps:

[0015] (1) Sample extraction, divide the grapes to be tested into 6 parts on average, and take 20 samples from each part as test samples. When taking samples from each part, check whether there are obvious bruises, wilting parts, and rot in the samples taken , bacterial plaque or its surface has no obvious mechanical damage. If there is any, discard it and re-extract it from the portion. After extraction, wipe off the attachments on the surface of the sample with gauze. If there is more soil, rinse it with clean water and dry it. Packed in vinyl packaging bags; when sampling, use the sampling terminal to record in detail, record the sample information such as the sampling unit, sampling time, sampling location, sample name, party information, etc., and print the sampling list; after the sampling is completed, the on-site sampling person After sig...

Embodiment 2

[0018] Embodiment 2, a kind of preparation method of fresh watermelon pesticide residue detection sample, comprises the following steps:

[0019] (1) Sample extraction, divide the watermelon to be tested into 3 parts on average, and take 2 parts from each part, and check whether the extracted watermelon has obvious bruises, wilting parts, rot, bacterial plaque or no obvious mechanical damage on its surface, If there is any, discard it and extract it again in this portion. After extraction, wipe off the attachments on the surface of the sample with gauze. If there is more soil, rinse and dry it with clear water. Get 3 parts in 20 equal parts of a watermelon, mix together as testing sample after all getting, and pack with the packaging bag of polyethylene material;

[0020] (2) Sample preparation, under the recording of the camera lens, open the packaging bag to take out the sample, put the sample into a masher to make a uniform slurry, take two-thirds of the slurry as a sample,...

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Abstract

The invention discloses a preparation method of a fresh and live agricultural product pesticide residue detection sample. The preparation method comprises three steps of extracting samples, preparingthe samples and preserving. The operating flow is simple, and sample spot check, pretreatment and storage efficiency of batched agricultural products can be improved; and test samples and spare samples are treated and stored under the same condition, so that agricultural product residue degradation rate difference and sample individual difference are avoided.

Description

technical field [0001] The invention relates to the technical field of food safety, in particular to a method for preparing a sample for detection of pesticide residues in fresh and live agricultural products. Background technique [0002] The detection of pesticide residues in fresh and live agricultural products is an important control method to ensure the safety of food and agricultural products. Pesticide residues in isolated agricultural products will be degraded to varying degrees due to the influence of internal and environmental factors. Routine sampling, separation and storage will affect The results of the detection review. At present, the conventional method of sampling pesticide residues in agricultural products is mainly to extract raw materials and divide them into test samples and backup samples, and store them in whole plant packaging (-20°C) at low temperature. Individual differences between samples may lead to inconsistent conclusions between initial inspec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/02
CPCG01N33/025
Inventor 李建华项威何蕾
Owner 国检测试控股集团(安徽)拓维检测服务有限公司
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