Moreover, surface moisture evaporates quickly at the initial stage of
the drying process due to the higher heat transfer and mass transfer coefficient.
Both meat samples dried faster in drying processes carried out at higher temperatures, which was consistent with previous studies.
This can be explained by the fact that higher drying temperatures cause higher heat and mass transfer.
In other words, increasing the drying temperature
decreased the drying period.
The drying period of the drying techniques at different temperatures is shown in Table 3. As shown in this table, the type of drying technique and the drying temperature influenced the drying period.
The drying time required for drying the beef sample with the USV technique at 55 °C, 65 °C and 75 °C was 16.5 h, 10.0 h and 5.0 h, respectively and that for the chicken meat
was 16.5 h, 7.0 h and 5.5 h, respectively.
Among the drying techniques
used in this study, the shortest drying period was observed in the USV