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Potato production place tracing method based on mineral elements and stable isotopes

A stable isotope and carbon stable isotope technology, applied in the field of potato origin traceability based on mineral elements and stable isotopes, can solve the problems of extensive production and processing, market fairness, brand protection and consumer rights infringement, lack of geographical identification and protection methods, etc. , to achieve the effect of wide application prospects and protection of regional potato brands with advantages of origin

Pending Publication Date: 2020-07-31
INNER MONGOLIA AUTONOMOUS REGION ACAD OF AGRI & ANIMAL HUSBANDRY SCI
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AI Technical Summary

Problems solved by technology

[0004] The perennial planting area and total output of potatoes in Inner Mongolia rank among the top three in the country, and its processing quality has regional characteristics and flavor characteristics. The phenomenon of shoddy goods happens from time to time, causing serious damage to market fairness, brand protection and consumer rights

Method used

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  • Potato production place tracing method based on mineral elements and stable isotopes
  • Potato production place tracing method based on mineral elements and stable isotopes
  • Potato production place tracing method based on mineral elements and stable isotopes

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Experimental program
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Effect test

Embodiment 1

[0028]Sample collection: During the potato harvest period, 129 samples were collected from potato production bases in four major potato-producing counties and cities in Inner Mongolia, Heilongjiang, Xinjiang, and Sichuan provinces. The sampling location information is shown in Table 1. Three samples were randomly collected at each sampling point. After the collected potatoes are peeled, washed with deionized water, homogenized by a tissue masher, 50-100g is taken, dried in a blast oven at 60°C for 2 hours, then dried at 105°C to constant weight, fully ground, passed A 100-mesh sieve is used as an analysis sample for later use.

[0029] Table 1 Statistics of sampling locations

[0030]

Embodiment 2

[0032] Analysis of samples

[0033] Determination of mineral elements: Refer to GB 5009.268-2016 "National Food Safety Standard for the Determination of Multi-Elements in Food", accurately weigh 0.5g of potato samples (accurate to 0.001g) into a microwave digestion tube, add 10mL of concentrated nitric acid, and let stand for 1h , Tighten the cap of the tube, adopt the temperature programming method to digest the sample, cool to room temperature after the digestion, rinse the inner cap with a small amount of water, remove the acid in vacuum, dilute it to a 50mL volumetric flask with deionized water, and do a blank experiment at the same time. Sodium (Na), magnesium (Mg), aluminum (Al), potassium (K), calcium (Ca), iron (Fe), boron (B), phosphorus (P), vanadium ( V), chromium (Cr), manganese (Mn), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), arsenic (As), selenium (Se), cadmium (Cd) a total of 18 types content of mineral elements. The external standard method was used fo...

Embodiment 3

[0040] Data analysis and model building:

[0041] The contents of 18 mineral elements in potatoes from different origins were counted separately. The variance analysis results are shown in Table 3. At the 0.05 level, the significant d values ​​of arsenic and selenium were 0.07 and 0.0957, respectively. At the level of 0.05, the significant d values ​​were all less than 0.05, indicating that there were significant differences in the contents of different mineral elements in potatoes in different regions.

[0042] Table 3 Statistics of variance analysis results

[0043]

[0044]

[0045] The principal component analysis was carried out on 18 kinds of potato mineral elements in different production areas. The analysis results are shown in Table 5. We selected the components with eigenvalues ​​greater than 1 as the principal components, and extracted 5 effective principal components. The contribution rate of the first principal component is 33.747%, the contribution rate of...

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Abstract

The invention discloses a potato production place tracing method based on mineral elements and stable isotopes. The method comprises the steps: respectively collecting potato samples of potato production bases of four provinces: Inner Mongolia, Heilongjiang, Xinjiang and Sichuan, and preparing analysis samples; determining the contents of aluminum, manganese, copper and zinc, the carbon stable isotope ratio delta < 13 > C and the nitrogen stable isotope ratio delta < 15 > N in the obtained analysis sample; substituting the determination result into a discrimination model, and determining the production place of the potato sample. The potato production place tracing method is based on mineral elements and stable isotope contents of different origins, the sources and accuracy of different potato products can be explained by utilizing an objective detection technical means, the accuracy rate is not less than 95.3%, the blank of lack of a potato traceability technology is filled, data support can be provided for protecting potato regional brands with production place advantages, the phenomenon of shoddy goods is avoided, and the method has a wide application prospect.

Description

technical field [0001] The invention relates to the technical field of potato origin traceability, in particular to a method for potato origin traceability based on mineral elements and stable isotopes. Background technique [0002] At present, there are many researches on origin traceability based on mineral elements and stable isotopes at home and abroad: at first, they were mostly used in the field of plant-derived characteristic agricultural products, including wine, tea, fruit, wheat, tartary buckwheat, peanuts, rice, traditional Chinese medicine, etc. For example: Kelly (Application of isotope and elemental analysis in the traceability research of the origin of high-quality long-grain rice. European Food Research and Technology, 2002.214.72-78) and others used the traceability analysis technology of mineral elements to study the traceability of four countries in the United States, Europe, India and Pakistan. identified the origin of rice and found that manganese, boron...

Claims

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Application Information

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IPC IPC(8): G01N30/06G01N30/72
CPCG01N30/06G01N30/72
Inventor 张欣昕张福金刘广华杨永青董泰音康博洋莎娜李秀萍张尧
Owner INNER MONGOLIA AUTONOMOUS REGION ACAD OF AGRI & ANIMAL HUSBANDRY SCI
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