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Rice producing area identification method based on mineral matter analysis technology and application

An identification method and analysis technology, applied in the field of identification of rice origin, can solve problems such as indetermination

Inactive Publication Date: 2015-09-16
HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lack of an effective method for identifying origins with the help of crop mineral element fingerprints.
Although at present, scholars at home and abroad have studied the influence of factors such as region, variety, and year on the content of mineral elements in agricultural products, the purpose of such research is to screen varieties that can enrich nutrients. It has not been reported yet, because the content of mineral elements in japonica rice is affected by many factors, such as water, atmosphere, soil, fertilization amount, rainfall, etc. Sure

Method used

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  • Rice producing area identification method based on mineral matter analysis technology and application
  • Rice producing area identification method based on mineral matter analysis technology and application
  • Rice producing area identification method based on mineral matter analysis technology and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The collection of embodiment 1 rice sample

[0035] The inventor collected rice samples in 2013 from Wuchang, Jiansanjiang and Chahayang. Each city selects the main producing county, and each county selects the main planting variety with the largest planting area in the main producing township (town). Collect about 5 kg of rice ears from the field during the harvest period, and number them. About 30 samples were collected in each city, and a total of 180 samples were collected. Considering the influence of different ecological conditions on the test results, sampling and recording the longitude and latitude of the planting site, sunshine hours, annual average temperature, rainfall, etc. The sample information collected in 2013 is shown in Table 1.

[0036] Table 1 Sample collection information table in 2013

[0037]

[0038]

Embodiment 2

[0039] The mensuration of embodiment 2 sample pretreatment and mineral content

[0040] The samples collected in Example 1 were air-dried, harvested grains, packed into nylon net bags and placed in a cool and ventilated place. The rice is then selected, hulled, hulled, and milled to obtain polished rice. All samples are processed in a unified manner. Rinse the polished rice quickly with deionized water to remove the surface of the polished rice and the foreign ions introduced during the processing, put it in an oven to dry, and perform ultrafine grinding.

[0041] Accurately weigh a sample of a certain quality, put it into a digestion tube, add a certain amount of acid, and put it into a microwave digestion apparatus for digestion. The sample solution obtained after digestion was washed out with deionized water, constant volume, and Na, Mg, Al, K, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Rb, Sr, Y, Mo, Rh, Ag, Cd, Sb, Te, Ba, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm...

Embodiment 3

[0047] Example 3 Verification and Analysis of Elements Closely Related to Regions in Japonica Rice from Different Regions

[0048] 3.1 Principal component analysis of elements closely related to regions in Japonica rice from different regions

[0049] In order to preliminarily test the discriminative effect of 14 elements closely related to regions, Na, Mg, Ca, Cr, Mn, Co, Se, Rb, Sr, Y, Mo, Dy, Ho, and Er, on the origin of wheat samples from different regions The principal component analysis was performed on the contents of these 14 elements. The loading plot of the first 3 principal components is as follows figure 1 shown. Depend on figure 1 It can be seen that the main component 1 mainly synthesizes the information of the elements Na, Ca, Y, Er, Sr, Dy, Mo, and Co; the main component 2 mainly synthesizes the information of the elements Mn, Rh and Mg; the main component 3 mainly represents the element Ho information. The scores of the first three principal components of...

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Abstract

The present invention discloses a rice producing area identification method based on mineral matter analysis technology and application, and belongs to the technical field of quality and safety of agricultural products. The method is as follows: after pretreatment of raw rices of different producing areas, mineral element content of the rice can be measured by high-resolution inductively coupled plasma mass spectrometer, the characteristics of mineral element content of the rice of different producing areas can be analyzed, a discrimination model can be built and validated, and the producing area of a to-be-tested rice can be measured by the discrimination model. The method has the characteristics of high discriminating accuracy, the accuracy rate can reach 97.8%, and the method has great significance to agricultural product quality inspection and protection of geographical indications.

Description

technical field [0001] The invention relates to a method and application of rice origin identification based on mineral analysis technology, and belongs to the technical field of agricultural product safety and quality detection. Background technique [0002] Due to the unique geographical advantages in the north of my country, some japonica rice varieties in the north are favored by consumers all over the country because of their sweet, soft, fragrant and refreshing taste, and their sales prices in the domestic market are relatively high. However, at present, good and bad are mixed in the japonica rice market, and good and bad varieties are mixed together. It is common to counterfeit high-quality japonica rice, use cheap rice and mix high-priced rice and so on. For example, in the Wuchang rice "adulterated door" incident reported in 2010, it is difficult for consumers to buy the real Wuchang "Daohuaxiang" fragrant rice. Instead, they buy ordinary long-grain rice pretending ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N27/626
Inventor 钱丽丽张东杰张爱武鹿保鑫王颖张桂芳
Owner HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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