in each unit is critical for optimization of the production process.
Unfortunately, the mass transfer of sugar in this system has not
been studied.
Although no free water was observed in the SSF technology,
mass transfer of sugar occurred in particles with water moisture
above 70% [9]. In each particle unit, the sugar diffusion is driven
by the sugar gradient between the interior and exterior of the particle.
Because the apparent mass transfer of sweet sorghum sugar
was originated from the adduct of each micro unit, the kinetic of
sugar transfer in SSF process of sweet sorghum was investigated
by solid-liquid extraction experiments. In the present paper,
various factors impacting the sugar transfer from sweet sorghum
cells to the surface in SSF were studied. These factors included
particle size, stirring speed, osmotic pressure and temperature