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Auxiliary identification method of geographical origin of wheat

A wheat and origin technology, which is applied in the preparation of test samples, measuring devices, material analysis by electromagnetic means, etc., can solve the problem of few wheat origins, reduce the types of elements, improve the correct discrimination rate, and reduce the detection cost. Effect

Inactive Publication Date: 2012-06-27
INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no patent related to the identification of wheat origin in China, and there are few related studies on the identification of wheat origin using mineral element fingerprint analysis technology

Method used

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  • Auxiliary identification method of geographical origin of wheat
  • Auxiliary identification method of geographical origin of wheat
  • Auxiliary identification method of geographical origin of wheat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1. Identification of wheat producing area

[0024] (1) Sample collection

[0025] In June 2009, farmers were randomly selected in Hebei and Henan provinces, and 5 kg of wheat harvested in their fields were taken, numbered, and used as a sample; 15 samples were collected from each province, and 100 g of each sample was taken as an analysis sample.

[0026] (2) Sample cleaning, drying, grinding

[0027] Pick out impurities such as stones and weeds in the sample, then rinse with deionized water 4 times and put them in an evaporating dish; dry in a 38℃ oven for 24 hours to reach a constant weight, take it out and cool in a desiccator; then use 1093 Cyclone mill (Foss Tecator, Denmark) milled to obtain whole wheat flour with a particle size of 0.15 mm.

[0028] (3) Sample digestion

[0029] Accurately weigh 0.2000g of the sample into a 25mL PTFE special sample dissolving tank, first wet it with a small amount of water, gently shake to make the sample uniform, add 15m concentra...

Embodiment 2

[0046] Example 2. Identification of wheat producing area

[0047] (1) Sample collection

[0048] In June 2009, farmers were randomly selected in Shandong and Shaanxi provinces, and 5 kg of wheat harvested from their fields were taken, numbered, and used as a sample; 15 samples were collected from each province, and 100 g of the samples were taken as analysis samples.

[0049] (2) Sample cleaning, drying, grinding

[0050] Pick out impurities such as stones and weeds in the sample, then rinse with deionized water 4 times and put in an evaporating dish; dry in an oven at 105°C for 6 hours to reach constant weight, take it out and cool in a desiccator; then use 1093 A cyclone mill (Foss Tecator, Denmark) milled to obtain whole wheat flour with a particle size of 0.075 mm.

[0051] (3) Sample digestion

[0052] Accurately weigh 0.2000g of the sample into a 25mL special sample dissolving tank for PTFE. Wet it with a small amount of water first, shake it gently to make the sample uniform, add...

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Abstract

The invention discloses an auxiliary identification method of geographical origin of wheat, comprising the following steps: (1) collecting a wheat sample from any one region of Hebei, Henan, Shandong and Shanxi; (2) grinding the wheat sample to obtain a wheat powder sample and carrying out digestion; (3) measuring the concentrations of Be, Sc, Co, Ga, Ba and Ti in the digested solution to obtain the contents of Be, Sc, Co, Ga, Ba and Ti in the wheat sample, successively marking as XBe, XSc, XCo, XGa, XBa and XTi with the unit of mu g / g; wherein Y Hebei, Y Henan, Y Shandong and Y Shanxi can be obtained according to discrimination modes (1)-(4), and the largest value of the Y Hebei, Y Henan, Y Shandong and Y Shanxi represents where the wheat sample comes from. Compared with the prior art, the method adopts 6 elements different from the prior art to establish the identification modes, the element variety required by the measurement is reduced, the measurement cost is reduced, and the accurate identification rate is raised, wherein the accurate identification rate can reach more than 90 %.

Description

Technical field [0001] The invention relates to a method for assisting in identifying the producing area of ​​wheat, in particular to a method for identifying the producing area of ​​wheat based on a mineral element analysis method. Background technique [0002] Wheat is an important food crop in the world. Its distribution, cultivation area and total trade volume rank first among food crops. About 35% of the world's population feed on wheat as the staple food. Wheat is also China's main food crop, and its annual output and consumption account for about 1 / 4 of the country's total grain. Its nutritional quality, processing quality and utilization value are not only related to the variety, but also affected by special geographical factors such as local climate and soil. To this end, China has built high-quality wheat production bases in the main wheat-producing areas, such as the Gaocheng Wheat Base in Hebei Province and the Yanjin Wheat Base in Henan Province. The wheat produced...

Claims

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Application Information

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IPC IPC(8): G01N27/62G01N1/28
Inventor 魏益民赵海燕郭波莉
Owner INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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