To examine the effect of using a particular measurement position,
the EIS scans were performed at eight positions located at
intervals of 45 along the circumference of the equator of each
sample (Fig. 1). Visual inspection (Fig. 2) on the internal pericarp of
the cut-open mangosteens revealed that the largest segment of the
flesh is normally translucent (Chaisrichonlathan and Noomhorm,
2011). Therefore, the first position of the measurement is referenced
at the external surface of the pericarp where the internal
segment has its largest external surface area (Terdwongworakul
et al., 2012). The largest internal segment was identified by the
assessment of the external shape of the fruit. The number of petals
on the bottom of the mangosteen can be used to indicate the
number of flesh segments within the fruit. Thus, the first position
on the fruit was visually assigned by means of assessment of the