Then each sample was graded by a three-member
panel. After the NIR spectra for each sample were collected over the wavenumber range of
11,0 0 0e4000 cm , the SLC of each sample was measured according to the official method. The calibration equations relating the Fourier Transform Near-infrared (FT-NIR) spectra to the measured SLC
were developed based on the partial least square (PLS) regression.