Spectroscopy and Spectral Analysis, Volume. 42, Issue 4, 1243(2022)
Nondestructive Testing and Grading of Milk Quality Based on Fourier Transform Mid-Infrared Spectroscopy
Figures & Tables(8)
Fig. 1. Mean spectra of special quality milk, high protein characteristic milk, high fat characteristic milk and ordinary milk
Fig. 3. (a) Number of sampling variables; (b) RMSECV; (c) Regression coefficient path
Fig. 4. Hierarchical model based on the second order difference-UVE-SCARS-RF
Table 1. Sample distribution statistics of each pasture
View tableView in ArticleTable 1. Sample distribution statistics of each pasture
牧场标记 样本数量 特优优质奶 高蛋白
特色奶高乳脂
特色奶普通奶 1 118 183 50 119 2 102 56 151 92 3 144 106 338 249 4 40 22 112 44 5 258 132 167 143 6 187 131 130 141 7 63 66 41 62 8 169 149 81 147 9 139 221 57 176 10 122 89 165 159
Table 2. Standard of classification
View tableView in ArticleTable 2. Standard of classification
牛奶
标记级别 脂肪/% 蛋白质/% 体细胞/
(104个·mL-1)A 特优优质奶 ≥4且≤9 ≥3.7且≤7 ≤20 B 高蛋白特色奶 ≥1.5且≤3.4 ≥3.7且≤7 ≤50 C 高乳脂特色奶 ≥4且≤9 ≥1且≤3.1 ≤50 D 普通奶 3.14 2.83.4 ≤100
Table 3. Full spectrum prediction model using different pre-processing methods
View tableView in ArticleTable 3. Full spectrum prediction model using different pre-processing methods
模型 预处理 训练集准确率/% 测试集准确率/% Total A B C D Total A B C D NB 全光谱 84.50 87.77 81.09 85.86 82.85 84.22 89.80 82.66 83.46 80.70 SNV 90.72 89.47 94.56 92.71 86.71 88.46 87.06 92.20 89.66 85.46 MSC 90.97 89.89 94.93 92.27 87.35 88.98 89.05 92.20 89.92 85.21 一阶导数 90.69 92.34 88.63 91.27 90.25 88.85 94.03 84.68 89.15 86.97 二阶导数 93.76 95.74 94.68 93.26 91.43 92.05 96.77 93.06 90.70 87.72 一阶差分 90.38 92.34 87.64 90.94 90.25 88.85 93.78 84.39 89.41 87.22 二阶差分 94.31 96.28 95.92 93.59 91.64 92.11 96.52 94.51 90.44 87.22 RF 全光谱 99.86 100 100 99.56 99.89 95.83 97.26 96.53 95.09 94.49 SNV 99.86 100 100 99.56 99.89 94.52 97.01 95.66 95.09 90.48 MSC 99.86 100 100 99.56 99.89 94.33 97.01 95.66 95.09 89.72 一阶导数 99.86 100 100 99.67 99.79 96.15 98.01 97.69 96.12 92.98 二阶导数 99.86 100 100 99.56 99.89 96.41 98.01 97.69 96.12 93.99 一阶差分 99.86 100 100 99.56 99.89 96.09 98.01 97.69 95.87 92.98 二阶差分 99.86 100 100 99.56 99.89 96.87 98.76 97.69 96.90 94.24
Table 4. Prediction results by NB and RF models
View tableView in ArticleTable 4. Prediction results by NB and RF models
模型 筛选方法 变量数 训练集准确率/% 测试集准确率/% Total A B C D Total A B C D NB 全光谱 514 94.31 96.28 95.92 93.59 91.64 92.11 96.52 94.51 90.44 87.22 UVE 229 94.17 96.06 95.92 93.26 91.64 92.70 97.76 92.49 90.96 89.47 CARS 37 93.73 95.21 95.43 94.14 90.35 92.50 96.77 93.06 92.25 87.97 SCARS 20 94.45 95.96 95.30 94.92 91.75 93.94 97.26 93.93 93.02 91.48 UVE-CARS 30 93.95 95.11 95.30 93.59 91.96 93.42 97.01 93.35 92.51 90.73 UVE-SCARS 47 94.68 95.96 95.92 94.59 92.39 93.61 97.26 93.35 93.28 90.48 RF 全光谱 514 99.86 100 100 99.56 99.89 96.87 98.76 97.69 96.90 94.24 UVE 229 99.86 100 100 99.56 99.89 96.74 98.51 97.69 96.38 94.49 CARS 37 99.86 100 100 99.56 99.89 95.76 97.76 95.95 95.87 93.48 SCARS 20 99.86 100 100 99.56 99.89 95.57 98.51 95.95 94.83 92.98 UVE-CARS 30 99.86 100 100 99.67 99.79 95.83 97.26 97.40 96.12 92.73 UVE-SCARS 47 99.86 100 100 99.56 99.89 96.48 98.26 97.40 95.87 94.49
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Shi-jie XIAO, Qiao-hua WANG, Chun-fang LI, Chao DU, Zeng-po ZHOU, Sheng-chao LIANG, Shu-jun ZHANG. Nondestructive Testing and Grading of Milk Quality Based on Fourier Transform Mid-Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1243
Paper Information
Category: Research Articles
Received: Apr. 8, 2021
Accepted: --
Published Online: Jul. 25, 2023
The Author Email: XIAO Shi-jie (1175760869@qq.com)
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