involves the recovery of solute from the
solid media using a liquid solvent [1,2].
The use of microwave radiation
for mass transfer intensification is well-known [2]. In microwave
assisted solid–liquid extraction, the extraction is accelerated
due to the changes in cell anatomy caused by the impact of microwave
radiation. The accelerated extraction may be attributed to
synergistic action of temperature and concentration gradients
operating in the same direction [3,4]. It is pertinent to note that
in microwave assisted solid–liquid extraction, the heat is dissipated
directly within the moisture-laden solid matrix causing the
sudden disruption of the same [5]. However, in the conventional
solid–liquid extraction methods, heat transfer takes place from
external cell surfaces to the internal core [3].