The raw spectra of the PCC samples obtained after visible/NIR spectroscopy scan ( Figure 1 A), in which the horizontal coordinate was the wavelength, and the vertical coordinate was the absorbance expressed as log 1/R, showed that several samples of PCC had a clear trend of decreasing absorption peaks in the wavelength range of 400 to 800 nm, which indicated that different samples had specific absorption characteristics in the visible wavelength band.
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Prediction of Anthocyanidins Content in Purple Chinese Cabbage Based on Visible/Near Infrared Spectroscopy.
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