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A method for distinguishing between Huaniu apple and American Red Delicious

A technology for apples and cattle, applied in the field of food authenticity detection and inspection, can solve problems such as large differences, high misjudgment rate, high quality identification rate, etc., and achieve reliable detection results, simple operation, and good detection feasibility. Effect

Active Publication Date: 2022-03-29
BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the appearance of Huaniu apple and red snake fruit is very similar, and the rate of misjudgment by naked eye is high; and the quality of the fruit is related to the water and fertilizer management of the orchard and the climatic conditions of planting. There are large differences between years, and the quality identification is difficult to guarantee. High accuracy rate; although near-infrared spectroscopy has the characteristics of non-destructive and rapid detection, modeling is difficult, especially for fruit samples, and its ability to distinguish is easily interfered by factors such as spectral information collection position and fruit maturity

Method used

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  • A method for distinguishing between Huaniu apple and American Red Delicious
  • A method for distinguishing between Huaniu apple and American Red Delicious
  • A method for distinguishing between Huaniu apple and American Red Delicious

Examples

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Embodiment 1

[0028] The embodiment of the present invention provides a kind of method for discriminating Huaniu apple and red snake fruit, such as figure 1 As shown, it specifically includes the following steps:

[0029] S1. Collect 30 parts of Huaniu apples from Tianshui City, Gansu Province and 30 parts of American red snakes from Washington State, USA respectively, remove the stalks and cores, and then crush them to obtain a homogenate sample. Weigh 2g of the homogenate sample in a glass Fill the sample bottle with quartz wool, place the sample bottle in the sample tank of the plant moisture vacuum extraction equipment, extract at 120°C for 3 hours, and transfer the extracted water sample to the sample injection vial; Use an elemental analyzer-stable isotope mass spectrometer to measure the hydrogen and oxygen isotope ratios of the water samples in the injection vials, and use water isotope standard materials for calibration to obtain the hydrogen isotope ratios δ of all Huaniu apple an...

Embodiment 2

[0045] The embodiment of the present invention adopts a method similar to that of Example 1 to identify Huaniu apples and American Red Delicious apples, and uses the relevant data of the training sample set of Huaniu Apples and American Red Delicious Red Delicious apples in Example 1, and uses the labels sold in a supermarket in Beijing For the American Red Delicious sample is the sample to be identified, adopt the method of step S1 in the embodiment 1 to measure its hydrogen isotope ratio δ 2 H and oxygen isotope ratio δ 18 O data, the results are shown in Table 3 below.

[0046] Table 3 Hydrogen isotope ratio δ of samples to be identified 2 H and oxygen isotope ratio δ 18 O test result

[0047]

[0048] Simultaneously, adopt the method of step S4 in the embodiment 1 to carry out SPSS statistical analysis and judgment: the hydrogen isotope ratio δ of Huaniu apple training sample set and the sample to be identified 2 H and oxygen isotope ratio δ 18 O data input into th...

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Abstract

The invention discloses a method for identifying Huaniu apple and American snake fruit. 2 H and oxygen isotope ratio δ 18 O, construct the training sample set of Huaniu apple and American red fruit, and calculate the hydrogen isotope ratio δ of water in the juice of the sample to be identified 2 H and oxygen isotope ratio δ 18 The measured value of O is compared with the training sample set and the type is identified. According to the characteristics that the hydrogen and oxygen isotope composition of the water of the fruit is only related to the hydrogen and oxygen isotopic composition of the water source in the growth process and the climate environment of the production area, the invention can quickly and effectively identify and distinguish the Huaniu apple and the American snake fruit, which is helpful for unknown Authenticity identification of origin samples; when the method of the present invention is applied, only the hydrogen isotope ratio δ of the samples to be identified is required 2 H and oxygen isotope ratio δ 18 The measured value of O is compared with the training sample set, the operation is simple, the feasibility is good, and the detection result is reliable.

Description

technical field [0001] The invention relates to the technical field of food authenticity detection and inspection, in particular to a method for identifying Huaniu apples and American red snakes. Background technique [0002] Huaniu apple is a special product in Tianshui City, Gansu Province, my country. It belongs to the marshal apple. The fruit shape is conical, the peel is bright red, and the flesh is yellow-white. Produced in the western region of the United States, it belongs to the marshal apple. Its fruit shape, peel and flesh color are very similar to Huaniu apples. Among them, the red snake fruit in Washington State, the United States is the most famous, and it occupies most of the imported red snake fruit market in my country. . [0003] Due to factors such as standardized production, quality classification and brand premium of imported fruits, the price of imported fruits is often higher than that of domestic fruits. For example, the price of American snake fruit i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G16C20/20G01N27/62
CPCG16C20/20G01N27/62
Inventor 李安潘立刚靳欣欣赵杰
Owner BEIJING ACADEMY OF AGRICULTURE & FORESTRY SCIENCES
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