Yan-de LIU, Yu ZHANG, Xiao-gang JIANG, Xu-dong SUN, Hai XU, Hao-chen LIU. Detection on Firmness and Soluble Solid Content of Peach During Different Storage Days[J]. Spectroscopy and Spectral Analysis, 2021, 41(1): 243
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 1, 243 (2021)
Fig. 1. Peach samples of different storage periods
Fig. 2. Near-infrared dynamic online detection device
Fig. 3. Average spectrum of peach in different storage days
(a): Diffuse transmittance; (b): Diffuse reflectance
(a): Diffuse transmittance; (b): Diffuse reflectance
Fig. 4. PLS models of SSC and Firmness of peach under two detection methods
(a): Diffuse transmittance; (b): Diffuse reflectance
(a): Diffuse transmittance; (b): Diffuse reflectance
Fig. 5. The results of two wavelength selection algorithms
(a): The selected result of UVE; (b): The selected result of SPA
(a): The selected result of UVE; (b): The selected result of SPA
Fig. 6. Optimal model after characteristic wavelength selection
(a): Diffuse reflectance; (b): Diffuse transmittance
(a): Diffuse reflectance; (b): Diffuse transmittance
Fig. 7. Regression coefficients of SSC and Firmness of peach
(a): SSC; (b): Firmness
(a): SSC; (b): Firmness
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Table 1. Sample set division
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Table 2. Parameter changes of peach in different storage days
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Table 3. Comparison of sugar and firmness models under different pretreatment methods
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Table 4. PLS models of two wavelength selection algorithms
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