Identification method of rice geographical indications and application of identification method of rice geographical indications

A technology of geographical indication and rice, applied in the direction of material resistance, to achieve the effect of safeguarding the interests of farmers, guaranteeing the brand and fast detection

Inactive Publication Date: 2014-11-05
HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few literature and patent reports on the use of electronic nose technology to identify geographical indications of rice. The traditional method

Method used

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  • Identification method of rice geographical indications and application of identification method of rice geographical indications
  • Identification method of rice geographical indications and application of identification method of rice geographical indications
  • Identification method of rice geographical indications and application of identification method of rice geographical indications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 Sample pretreatment and collection of characteristic odor information

[0037] 3 kg of samples were collected from the rice fields of farmers in Wuchang City, Qiqihar, and Jiansanjiang, Heilongjiang Province. A total of 62 rice samples were collected, including 16 in Wuchang City, Heilongjiang, 9 in Qiqihar, and 37 in Jiansanjiang Administration Bureau. The collected rice is hulled and milled, and the precision of the obtained rice is in accordance with the national first-level standard. The milling time is 80s, and it is passed through a 50-mesh sieve to be tested.

[0038] The PEN3-electronic nose produced by the German AIRSENSE company was used to detect the dynamic changes of the smell of rice from different origins. Weigh 30g of rice into a 100mL sealed sample bottle, place it at 30°C for 90min, and then measure it. The measurement time is 60s and the recovery time is 120s. There are 10 odor sensors in the applied electronic nose (see Table 1), and each...

Embodiment 2

[0042] Example 2 Feasibility Analysis of Electronic Nose Technology for Identification of Rice Origin

[0043] The electronic nose is a characterization of the overall information of the volatile components of the sample. Different types of volatile components are measured by different sensors, and the amount of data information is large. It is necessary to combine chemometrics to extract effective data information. Principal component analysis (PCA) was first proposed by PEARSON in 1901, and its principle is to reduce the dimension of a large amount of data. In this embodiment, the software SPSS 20.0 is used to conduct principal component analysis on the measured data, and multiple indicators with certain correlations are combined into a group of unrelated comprehensive indicators to replace the original indicators. Based on the response value of each sensor for PCA analysis, two principal components are extracted. The first principal component mainly synthesizes sensors 1, 2...

Embodiment 3

[0045] Embodiment 3 linear discriminant analysis method establishes discriminant model

[0046] Discriminant analysis is a method to distinguish the type of sample. Discriminant analysis is different from cluster analysis. Discriminant analysis is to divide the known research objects into several categories, and establish a discriminant function according to the properties of the known categories of things on the basis of obtaining various known sample observation data, and then substitute the corresponding indicators of the samples to be classified into the discriminant function. Discriminative classification of samples of unknown sample type is then performed.

[0047] From the results of principal component analysis, it can be seen that the electronic nose fingerprint analysis technology is feasible to discriminate the origin of rice. In order to further understand the results of the gas sensor on the discrimination of rice origin, 50 samples were randomly selected to est...

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Abstract

The invention discloses an identification method of rice geographical indications and an application of the identification method of the rice geographical indications, and belongs to the technical field of safety and quality detection on agricultural products. The identification method comprises the steps: performing crushing pretreating on a to-be-detected sample, acquiring feature smell information of the pretreated rice by using an electronic nose, establishing a discrimination model, and determining the rice geographical indications according to the discrimination model. The method in which electronic nose fingerprint analysis and multivariate statistical analysis are combined, provided by the invention, realizes the identification of the rice geographical indications, has the advantages of high detection accuracy rate, convenience in operation, rapidness, nondestructive detection and the like, the correct classifying rate of samples can be up to 90 percent, the tracing of a rice producing area is effectively performed, and the method is suitable for on-site rapid identification of the rice producing area.

Description

technical field [0001] The invention relates to a rice geographical indication identification method and its application, and belongs to the technical field of agricultural product safety and quality inspection. Background technique [0002] Geographical indication products refer to products produced in a specific region, whose quality, reputation or other characteristics essentially depend on the natural and human factors of the place of origin, and which are named after review and approval with geographical names. The development of geographical indication products and the cultivation of characteristic industries have become a new growth point of regional economic development, and play an important role in strengthening local economy, adjusting industrial structure, increasing farmers' income and expanding employment. However, for the brand protection of geographical indication products, my country still has legal and technical deficiencies. Wuchang rice, Qiqihar rice and...

Claims

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Application Information

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IPC IPC(8): G01N27/04
Inventor 钱丽丽张东杰张爱武吕海峰
Owner HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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