The effects of microwave power levels on drying characteristics
and the quality of Spirogyra sp. during microwave drying process
at different power levels were investigated based on the color
properties and phenolic content. The optimum drying microwave
power level was found to be 1.55 W/g judging by the comparison
of quality results obtained from the different power levels.
Considering from five thin layer drying models, the logarithmic
model was best describing the microwave drying characteristics
of Spirogyra sp.