Visual SpectroscopyChemical components of any food material absorb light energy at specific wavelengths; hence some compositionalinformation can be determined from spectra measured by spectrophotometers. In the visible wavelength range, pigmentssuch as chlorophylls, carotenoids, anthocyanins and other coloured compounds are the major light absorbing componentof foodstuffs such as vegetables [1]. The reflectance features of any object in the visible region (380–750 nm) areperceived by human eyes as colour, which prepare information about the pigment content of the sample [2]. When lightis absorbed and some part of it is reflected by the target material, colours appear. If all light is reflected, the object willappear white, and if all is absorbed, it will appear black. The wavelengths influence the observed colour which thereforeis related on both the light source and the absorption [3].