values of failure stress; however the failure stress had only
slight changes during all process.
Statistical analysis (ANOVA) showed the E variation was
independent of drying temperature, even though changes of
the attribute are smaller at high temperature. The E value
decreased 2.4–3.4 times in the first hour of drying; afterward,
the change ofthis parameter was smaller but proportionalto
water loss.Inbrief, pineapple dried at 75◦
Cappeared asmore
rigid (greater E) than the samples of pineapple dried at 45◦
C,
but much less rigid than fresh fruit.
In contrast, the failure strain ε
HF of dried pineapple
was lower when the process temperature was higher. This
mechanical attribute was influenced by drying temperature
(p