Nondestructive Identification of'Shatangju'Mandarin from Different Origins Based on Near-infrared Spectroscopy Combined with the Variable Screening Strategy
QIU Xiwen
YANG Qinghua
ZHAN Jiaqi
TANG Hui
LI Pao
DU Guorong
Abstract：A non-destructive traceability method for'Shatangju'mandarin(Citrus reticulata Blanco cv.Shatangju)from different origins was established based on near-infrared(NIR)spectroscopy technology and variable screening-linear discriminant analysis(LDA)method.Spectra of'Shatangju'mandarin from Guangxi,Yunnan,and Guangdong at the integration times of 25,45 ms,and 65 ms were collected.Spectral preprocessing was used to eliminate interferences,while principal component analysis(PCA)and LDA methods were used to establish identification the models for'Shatangju'mandarin from different origins.Competitive adaptive reweighted sampling(CARS),Monte carlo non informative variable elimination(MCUVE),continuous projection algorithm(SPA),and randomized trial method(RT)were used to further simplify the model and improve the identification accuracy.The results indicated that spectral preprocessing methods could eliminate the interferences in spectra.The unsupervised pattern recognition could not achieve the identification of'Shatangju'mandarin from different origins.The models of 45 ms and 65 ms were better than those of 25 ms.95.10%identification rate could be obtained with LDA and spectral preprocessing methods.The accuracies of model identification using variable screening method were significantly improved.99.02%identification rate could be obtained with 65 ms-debias correction(de-bias)-RT-LDA,65 ms-standard normal variate transformation(SNV)-RT-LDA,65 ms-original spectra-SPA-LDA,65 ms-first-order derivative(1st)-SPA-LDA models,and 45 ms-original spectra-MCUVE-LDA models.The above results indicated that the portable NIR spectroscopy technology and variable screening-LDA method could achieve accurate and non-destructive identification of'Shatangju'mandarin from different origins.
Keywords：'Shatangju'mandarinportable near infrared spectroscopyoriginvariable screeningnondestructive identification
Publication Date：2025-03-31
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：6( 6-11 )