powder has given it moderate compressibility. The same trend was observed in the case of tensile strength versus density relationships
(Fig. 2b). With increasing pressure load the tensile strength of all tablet
formulations increased and the tensile strength of the mixed fruit powder was in between the individual fruit powders. The mixing of two
powders allowed for minimization of inter-particle forces and thus
lowered the tensile force required to compress compared to pitaya
tablets. The die filling value at the initial stages of rearrangement is indicated by the intercept of the trend lines [24]. Pitaya tablets showed
the highest die filling value, while the mixed fruit powder was in
between the pitaya and guava fruit powders as expected (Fig. 2b). At
bulk state close packing of particles occurs, which depends on initial
rearrangements. Powder particles undergo plastic deformation at
higher compression pressure and greater slopes indicate greater degree
of plasticity and hence higher compressibility [25]. Thus, pitaya tablets
are found to be highly compressible compared to guava and mixed
fruit tablets.