Method for distinguishing huaniu apple from red delicious apple
A technology for apples and cows, applied in the field of food authenticity detection and inspection, can solve problems such as large differences, high misjudgment rate, and high quality identification accuracy, and achieve reliable detection results, simple operation, and good detection feasibility. Effect
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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] In the embodiment of the present invention, a method similar to that of Example 1 is used to identify Huaniu apples and American Red Delicious apples, using the relevant data of the training sample set of Huaniu Apples and American Red Delicious Red Delicious apples in Example 1, and using 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...
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Abstract
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