3.2. Texture analysis
The firmness of the grape tomatoes without heating treatment was
13.8% higher than the firmness of the grape tomatoes which were
heated by medium power for 50 s, and 14.6% higher than, that of
tomatoes treated by high power for 40 s (pb0.05), respectively
(Table 1). This observation suggests softer tomato texture might be
obtained in these two microwave heating treatments. Also, the grape
tomatoes which were treated by high power level for 50 s were
damaged. However, there were no significant differences of firmness
between grape tomatoes which were heated by other treatments and
that of without heating (pN0.05).