Spectroscopy and Spectral Analysis, Volume. 41, Issue 11, 3385(2021)
Research on Construction of Visible-Near Infrared Spectroscopy Analysis Model for Soluble Solid Content in Different Colors of Jujube
Figures & Tables(13)
Fig. 4. Original Vis-NIR spectra of Jujube samples and spectra after pretreatment with SNV
(a): Original Vis-NIR spectra; (b): Spectra after pretreatment with SNV
Fig. 5. RMSEP variation diagram of PLS models for jujube SSC established by samples with different colours for modeling sets
Fig. 7. Variations of RMSECV and RMSEP of mixed jujube model with PLS factors
Fig. 8. Correlation of SSC measured value and model predicted value
Table 1. Statistics of SSC contents in jujube samples
View tableView in ArticleTable 1. Statistics of SSC contents in jujube samples
Type of color Calibration set 1nc SSC(°Brix) Prediction set 2nv SSC(°Brix) MJ MJc 30 10.93~15.67 MJv 15 10.93~15.67 GJ GJc 30 11.00~17.10 GJv 15 11.50~16.90 RJ RJc 30 10.60~19.20 RJv 15 11.10~18.30 MJ-GJ MJc-GJc 60 10.93~17.10 MJv-GJv 30 10.93~16.90 MJ-GJ-RJ MJc-GJc-RJc 90 10.60~19.20 MJv-GJv-RJv 45 10.93~18.30
Table 2. Modelling results of PLS models for jujube SSC with different pretreatment methods
View tableView in ArticleTable 2. Modelling results of PLS models for jujube SSC with different pretreatment methods
Samples Pretreatment
methodsFactor RMSECV Rc MJc RAW 8 0.898 0.700 NWS 14 0.843 0.756 CWD 12 0.948 0.672 MSC 10 0.958 0.652 SNV 10 0.969 0.643 NWS-MSC 11 0.896 0.722 GJc RAW 19 0.825 0.854 NWS 10 0.718 0.893 CWD 9 0.659 0.910 MSC 9 0.774 0.873 SNV 20 0.739 0.884 NWS-MSC 10 0.717 0.897 RJc RAW 7 1.268 0.816 NWS 7 1.211 0.835 CWD 6 1.337 0.796 MSC 8 1.376 0.784 SNV 8 1.325 0.799 NWS-MSC 8 1.340 0.801 MJc-GJc RAW 6 1.362 0.496 NWS 10 1.329 0.578 CWD 8 1.245 1.606 MSC 8 1.124 0.676 SNV 8 1.132 0.671 NWS-MSC 11 1.108 0.698 MJc-GJc-RJc RAW 10 1.351 0.786 NWS 11 1.318 0.740 CWD 8 1.255 0.757 MSC 8 1.187 0.785 SNV 8 1.156 0.796 NWS-MSC 10 1.168 0.793
Table 3. Predicted results of PLS models for SSC of single color jujube
View tableView in ArticleTable 3. Predicted results of PLS models for SSC of single color jujube
Samples for modeling Pretreatment methods Factor RMSECV Rc Prediction set RMSEP Rp MJv 1.314 0.816 MJc NWS 14 0.843 0.752 GJv 2.112 0.657 RJv 2.792 0.405 MJv 1.769 0.611 GJc CWD 9 0.659 0.910 GJv 0.875 0.822 RJv 1.276 0.812 MJv 1.517 0.736 RJc NWS 8 1.211 0.835 GJv 1.578 0.831 RJv 0.960 0.923
Table 4. Predicted results of PLS models for SSC of mixed color jujube samples
View tableView in ArticleTable 4. Predicted results of PLS models for SSC of mixed color jujube samples
Samples for modeling Pretreatment methods Factor RMSECV Rc Prediction set composition RMSEP Rp MJc-GJc NWS-MSC 11 1.108 0.698 MJv 0.980 0.724 GJv 0.983 0.822 RJv 1.928 0.597 MJv-GJv-RJv 1.378 0.704 MJc-GJc-RJc SNV 8 1.158 0.796 MJv 1.077 0.668 GJv 0.881 0.861 RJv 1.140 0.841 MJv-GJv-RJv 0.946 0.864
Table 5. Analysis results of the models with modelling variables optimization
View tableView in ArticleTable 5. Analysis results of the models with modelling variables optimization
Calibration set Selected the number of variables Factor RMSECV Rc Prediction set RMSEP Rp MJc 2 040 13 0.850 0.748 MJv 1.070 0.824 GJc 340 9 0.515 0.947 GJv 0.443 0.958 RJc 180 11 0.725 0.943 RJv 0.980 0.947 MJc-GJc 160 14 0.903 0.812 MJv 0.797 0.848 300 14 0.808 0.851 GJv 0.605 0.933 MJc-GJc-RJc 200 10 0.886 0.884 MJv-GJv-RJv 0.721 0.922
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Yong HAO, Jiao-jun DU, Shu-min ZHANG, Qi-ming WANG. Research on Construction of Visible-Near Infrared Spectroscopy Analysis Model for Soluble Solid Content in Different Colors of Jujube[J]. Spectroscopy and Spectral Analysis, 2021, 41(11): 3385
Paper Information
Category: Orginal Article
Received: Oct. 28, 2020
Accepted: --
Published Online: Dec. 17, 2021
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