Rapid identification method for four kinds of high-temperature sterilized commercial milk

A high-temperature sterilization and identification method technology, which is applied in nuclear methods, measuring devices, and material analysis through optical means, can solve problems such as huge data and poor data mining results, and achieve rapid identification and reduce computing costs.

Inactive Publication Date: 2021-08-27
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The data output by the mid-infrared spectrometer is a matrix of n×1060 (n is the sample size), the data is huge, and it is not difficult to avoid data incompleteness, inconsistency,

Method used

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  • Rapid identification method for four kinds of high-temperature sterilized commercial milk
  • Rapid identification method for four kinds of high-temperature sterilized commercial milk
  • Rapid identification method for four kinds of high-temperature sterilized commercial milk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: Model establishment and screening

[0038] Instruments and equipment:

[0039] Selected from MilkoScan produced by FOSS company TM 7RM milk composition detector (operate according to the product instruction manual).

[0040] Specific steps are as follows:

[0041] (1) Collect milk samples

[0042] Purchased in supermarkets 194 samples of multi-batch high-temperature sterilized pure milk of four brands with large sales volume in China, 140 samples of multi-batch high-temperature sterilized high-end milk of two brands, and 70 samples of high-temperature sterilized organic milk. 175 samples of two brands of multi-batch α2-β casein milk.

[0043] (2) Determination of mid-infrared spectrum

[0044] Pour the milk samples into cylindrical sample tubes with a diameter of 3.5cm and a height of 9cm to ensure that the liquid level is greater than 6cm, then bathe them in a water bath at 42°C for 15-20min, and then extend the solid optical fiber probe into the liquid...

Embodiment 2

[0065] Embodiment 2: the application of the present invention to construct the model

[0066] 36 high-temperature sterilized milk samples were taken to verify the model, and the predicted results were compared with the real results. Among them, the types of these 36 samples have been recorded in advance.

[0067] Specific steps: Using the methods of measuring spectrum and data preprocessing in Example 1, 36 milk samples were measured and processed, and the optimal model selected was used for identification.

[0068] The results are shown in Table 4.

[0069] Table 4 model application results

[0070]

[0071] The identification result is exactly the same as the real situation, and the identification accuracy rate of the present invention reaches 100% for 13 pure milks, 8 high-end milks, 5 organic milks and 10 A2-β casein milks.

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Abstract

The invention belongs to the field of dairy product analysis, and particularly relates to a rapid identification method for four kinds of high-temperature sterilized commercial milk. The four kinds of high-temperature sterilized commercial milk are pure milk, high-end milk, organic milk and A2-beta casein milk. The method comprises the steps of 1) collecting samples of four kinds of high-temperature sterilized milk; 2) scanning the samples in the mid-infrared spectrum range to obtain mid-infrared spectrum data; 3) preprocessing the original mid-infrared spectrum to remove abnormal values; 4) dividing the preprocessed data set into a training set and a test set according to a stratified sampling principle; 5) screening spectral bands for modeling; 6) combining different spectrum preprocessing methods and modeling algorithms, establishing an identification model, evaluating the model by using accuracy and a Kappa coefficient, and screening out an optimal preprocessing method and modeling algorithm combination to obtain an optimal model; and 7) verifying the model, and evaluating the generalization ability of the model.

Description

technical field [0001] The invention belongs to the technical field of milk product analysis, and specifically relates to a rapid identification method for four main commercial milks in high-temperature sterilized milk. The four main commercial milks include pure milk (protein content 3.2g / 100ml, fat content 4g / 100ml), high-end Milk (protein content 3.6g / 100ml, fat content 4.4g / 100ml), organic milk (3.8g / 100ml, fat content 4.6g / 100ml) and A2-β casein pure milk (contains only A2-β casein without Pure milk with A1-beta casein). The technical field of the invention is related to the field of mid-infrared spectroscopy. Background technique [0002] In recent years, the income level of Chinese residents has continued to increase, and people's consumption tendency has also shifted to a higher level and more demand for dairy products, such as buying nutritious high-end milk with higher milk protein content, healthy and natural healthy organic milk, And special A2-β casein pure mi...

Claims

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Application Information

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IPC IPC(8): G01N21/3577G06N20/10
CPCG01N21/3577G06N20/10
Inventor 张淑君王海童南良康刘文举彭松悦上官爱哨
Owner HUAZHONG AGRI UNIV
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