MAE conditions. The beaker was placed in the middle of the oven
over a rotating dish and was exposed to microwave radiation at
different powers (160–320–480 W) for the selected irradiation
time (60–120–180 s). After microwave heating, the mixture in the
Pyrex beaker was allowed to cool down to room temperature and
filtered using filter paper (Whatman no-1). The filtered extract
was centrifuged and the supernatant was precipitated with an
equal volume of 95% (v/v) ethanol. The coagulated pectin mass
was washed with 95% (v/v) ethanol for three times to remove the
mono and disaccharides (Minkov, Minchev, & Paev, 1996).