Shi-jie XIAO, Qiao-hua WANG, Yi-kai FAN, Rui LIU, Jian RUAN, Wan WEN, Ji-qi LI, Huai-feng SHAO, Wei-hua LIU, Shu-jun ZHANG. Rapid Determination of αs1-Casein and κ-Casein in Milk Based on Fourier Transform Infrared Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2021, 41(12): 3688
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 12, 3688 (2021)
Fig. 1. Original spectra of cow’s milk
Fig. 2. Average spectra of cow’s milk
Fig. 3. Mean value and variance distributions of (a)αs1 and (b) κ-casein
Fig. 4. Variable selection of CARS
Fig. 5. Screening characteristic wavelengths by UVE
Fig. 6. (a) RMSE; (b) Selected optimal wavelength number index
Fig. 7. Optimal model for αs1-casein based on CARS
Fig. 8. Optimal model for κ-casein based on UVE
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Table 1. Data statistics of partitioning sample sets by SPXY algorithm
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Table 2. SVR prediction model of αs1-casein based on 3 characteristic variable selection methods
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Table 3. SVR prediction model of κ-casein based on different characteristic variable selection methods
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