Abstract

Soluble solids content(SSC) of Nanfeng mandarin fruit was studied by quantitative analysis technique based on visible/near infrared diffuse reflectance spectroscopy(Vis/NIR).Partial least squares(PLS) regression was carried out to analyze the Vis/NIR of Nanfeng mandarin fruit and its flesh.Calibration results for SSC were compared and discussed by using different spectral pretreatment methods.The result shows that the best calibration models,in the wavelength range of 350~1800nm,can be obtained by the first derivative spectrum(D1log(1/R)).The best prediction results for the mandarin fruit are 0.825 and 0.899 for correlation coefficient(rp) and root mean square errors of prediction(RMSEP) respectively.The best prediction results for its flesh are 0.893 and 0.749 for rp and RMSEP respectively.

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