Rapid assessment of soluble solids content in navel orange by near-infrared diffuse reflectance spectra

Yande Liu; Ji Luo; Xingmiao Chen; Yibin Ying

doi:10.1117/12.686544

23 October 2006 Rapid assessment of soluble solids content in navel orange by near-infrared diffuse reflectance spectra

Yande Liu, Ji Luo, Xingmiao Chen, Yibin Ying

Proceedings Volume 6381, Optics for Natural Resources, Agriculture, and Foods; 638117 (2006) https://doi.org/10.1117/12.686544
Event: Optics East 2006, 2006, Boston, Massachusetts, United States

Abstract

The potential of using Near Infrared diffuse reflectance spectroscopy to assess soluble solids content (SSC) of intact navel orange was examined. A total 40 samples were used to develop the calibration and prediction models. NIR spectral data were collected in the spectral region between 350 nm and 2500 nm and its second derivative spectra was used for this study. Different scattering correction algorithms (no preprocessing and multiplicative scattering correction (MSC) were compared. Calibration models based on different spectral ranges, different derivatives and different kinds of statistical models including partial least square (PLS) and principle component regression (PCR) were also compared in this research. The best results of PLS models with the second derivative spectra are r=0.929, RMSEC=0.517 and RMSEP=0.592, in the wavelength range of 361-2488 nm. The segment length used to derivate the spectra influences the calibration model and the results are better when the segment lengths and gap sizes are lower in Norris derivate filter. The results show that this method is feasible for rapid assessing SSC of the navel orange.

Citation Download Citation

Yande Liu, Ji Luo, Xingmiao Chen, and Yibin Ying "Rapid assessment of soluble solids content in navel orange by near-infrared diffuse reflectance spectra", Proc. SPIE 6381, Optics for Natural Resources, Agriculture, and Foods, 638117 (23 October 2006); https://doi.org/10.1117/12.686544

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