As to the morphological effect,
internal space, numerous seeds and peel thickness might obstruct
the light path, affecting absorbance spectra and diminishing model
accuracy, especially, for the transmission measurement where the
light was absorbed by peels or seeds and/or scattered to different
directions in the fruit cavity. On the other hand, in terms of chemical
quality analysis, lack of uniformity of quality attributes within
the fruit might also decrease model accuracy, therefore, it might be
necessary to repeat the spectral acquisitions at several positions on
the fruit sample