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Method for quickly identifying pasteurized buffalo fresh milk added with high-temperature sterilized milk

A pasteurization and high-temperature sterilization technology, applied in character and pattern recognition, measuring devices, material analysis by optical means, etc., can solve the problems of huge data, incomplete data, inconsistency, etc., and achieve the effect of reducing 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

Since 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, and being easily disturbed by noise (errors or outliers), and low-quality data will be Lead to poor data mining results, so some method is needed to preprocess the output data

Method used

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  • Method for quickly identifying pasteurized buffalo fresh milk added with high-temperature sterilized milk
  • Method for quickly identifying pasteurized buffalo fresh milk added with high-temperature sterilized milk
  • Method for quickly identifying pasteurized buffalo fresh milk added with high-temperature sterilized milk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1: Establishment of the model

[0035] Instruments and equipment:

[0036] The MilkoScanTM7RM milk component detector produced by FOSS Company was selected (operated according to the product instruction manual). The operation steps are as follows:

[0037] (1) Collection of milk samples

[0038] A total of 28 samples of pasteurized buffalo fresh milk were collected from different batches, and a total of 28 samples of the same batch of high-temperature sterilized milk were collected. Add high-temperature sterilized milk to pasteurized buffalo fresh milk according to seven volume percentages (0%, 2%, 5%, 10%, 20%, 50%, 100%), and the seven adulteration ratios The numbers of the adulterated buffalo milk are 1, 2, 3, 4, 5, 6 and 7 respectively, and the number of samples of the seven adulterated buffalo milks is 25, a total of 196 samples.

[0039] (2) Acquisition of mid-infrared spectra

[0040] Pour the milk samples into cylindrical sample tubes with a diamete...

Embodiment 2

[0058] Embodiment 2: the application of the model of the present invention

[0059] 21 samples were measured and processed using the technologies of measurement spectrum and data preprocessing in Example 1, and the optimal model selected was used for identification. The results are shown in Table 4.

[0060] Table 4 Model application results of the present invention

[0061] category number of real samples Number of identified samples Accuracy 1 3 3 1.00 2 3 3 1.00 3 3 3 1.00 4 3 3 1.00 5 3 3 1.00 6 3 3 1.00 7 3 3 1.00

[0062] The identification results of 21 samples of the present invention are completely consistent with the real situation, and the determination accuracy rate reaches 100%.

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Abstract

The invention belongs to the technical field of dairy product analysis, and particularly relates to a method for quickly identifying pasteurized buffalo fresh milk added with high-temperature sterilized milk. The method comprises the steps of 1) taking pasteurized buffalo fresh milk and high-temperature sterilized milk, and adding the the high-temperature sterilized milk into the pasteurized buffalo fresh milk in different proportions to prepare samples to be detected; 2) scanning a to-be-detected sample in the medium infrared spectrum range to obtain medium 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 a modeling spectral band; 6) on the training set, establishing an identification model of the method for quickly identifying the pasteurized buffalo fresh milk added with the high-temperature sterilized milk through 10-fold cross validation by using a nearest neighbor algorithm and the like, and evaluating and screening the model by using accuracy and kappa coefficients; and 7) verifying and applying the optimal model.

Description

technical field [0001] The invention belongs to the technical field of milk product analysis, in particular to a rapid identification method for pasteurized buffalo fresh milk mixed with high-temperature sterilized milk. Background technique [0002] Buffalo milk is the second most produced milk in the world (Santillo, Caroprese et al.2016), and its nutrient content and nutritional value are higher than milk, such as the total protein, medium-chain fatty acids, conjugated linoleic acid, and retinoids of buffalo milk. Alcohol and tocopherol content are higher than milk. Buffalo milk may contain almost all beneficial compounds found in other milks, and some beneficial compounds are unique to buffalo milk, such as specific classes of gangliosides (Colarow, Turini et al. 2003). In addition to the advantages of being a rich source of nutrients, studies have shown that buffalo milk can be tolerated by people who are allergic to cow's milk. [0003] Milk quality is a very importa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3577G06F30/27G06K9/62
CPCG01N21/3577G06F30/27G06F18/2411G06F18/24323
Inventor 张淑君罗雪路王海童南良康杨利国滑国华熊家军何长久苏俊东樊懿楷胡修忠万平民夏瑜
Owner HUAZHONG AGRI UNIV