Method for identifying organic coriander based on stable isotope ratio

An organic aroma and isotope technology, applied in measuring devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of non-uniformity, many certification agencies, and high costs, and achieve the effect of promoting healthy development, maintaining interests, and simple operation.

Inactive Publication Date: 2013-03-20
CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the national standard GB / T19630 "Organic Products" comprehensively stipulates and requires organic products from the four aspects of production, processing, labeling and sales, and management system, due to high cost, irregular management, and many and inconsistent certification agencies For other reasons, in the organic market, cases of passing off fake products as real ones and shoddy good ones continue to occur.
This not only harms the legitimate rights and interests of consumers, but also harms the interests of some honest organic growers

Method used

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  • Method for identifying organic coriander based on stable isotope ratio
  • Method for identifying organic coriander based on stable isotope ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Organic coriander and conventional coriander were planted according to the national standard; organic coriander was divided into two groups: organic fertilizer application group and no exogenous fertilizer application group; conventional coriander was divided into two groups: fully applied chemical fertilizer and half organic fertilizer and half chemical fertilizer. Coriander samples were taken at 30 days, 45 days and 60 days for δ 15 Determination of N value, the results show that the difference between organic coriander and conventional coriander is extremely significant (p≤0.009), as shown in the attached figure 1 .

Embodiment 2

[0019] The so-called "organic coriander" collected from organic farms around Beijing was compared with the conventional coriander purchased in the market, as shown in the attached figure 2 And as shown in the following table, wherein sample 3 is the conventional parsley purchased in the market, and the others are picked in the farm.

[0020] Sample to be tested 1

[0021] As can be seen from the results, the test sample 2 collected on the market and the test sample 1, test sample 4, test sample 5 and test sample 6 collected by the farm 15 The abundance of N was significantly different, that is, the test sample 2 collected in the market was not real organic coriander; at the same time, the test sample 3 collected from an organic farm was not real organic coriander.

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Abstract

The invention discloses a method for identifying organic coriander based on a stable isotope ratio, belonging to the technical field of authenticity identification for organic foods. The method comprises the step that the delta 15N values of real organic coriander and a coriander sample to be detected are compared, if significant difference is inexistent, the sample to be detected is a real organic coriander sample; otherwise, the sample to be detected is not a real organic sample. Or, the method comprises the steps of measuring a large quantity of real organic corianders and establishing an organic coriander N-isotope composition characteristic database at first, and then detecting whether the delta 15N value of the coriander sample to be detected is in the organic coriander N-isotope composition characteristic database; if so, judging that the sample to be detected is the organic coriander; otherwise, judging that the sample to be detected is not the real organic coriander. According to the method, the method capable of accurately identifying organic coriander is established by virtue of a stable isotope mass spectrometry technology, so that technical problems existing in market supervision for the organic coriander in China can be solved, and market behaviours can be standardized, the benefits of consumers and legitimate enterprises can be protected, and the healthy and the ordered development of the organic food industry can be promoted.

Description

Technical field: [0001] The invention relates to a method for identifying organic coriander based on a stable isotope ratio, and belongs to the technical field of authenticity identification of organic food. Background technique: [0002] Organic products require no chemical fertilizers or chemical pesticides to be used in the process of planting or production, and have no pollution and pollution to the environment and human body, so they are favored by consumers. In my country, the organic food industry maintains an annual growth rate of 20% to 30%. Although the national standard GB / T19630 "Organic Products" comprehensively stipulates and requires organic products from the four aspects of production, processing, labeling and sales, and management system, due to high cost, irregular management, and many and inconsistent certification agencies And other reasons, in the organic market, the cases of shoddy goods and false ones continue to occur. This not only harms the legiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
Inventor 钟其顶武竹英元晓梅熊正河
Owner CHINA NAT RES INST OF FOOD & FERMENTATION IND CO LTD
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