The moisture as well as oil uptake in the intermittent use of
frying oil up to 6 cycles during deep-fat frying of poori are
shown in Fig. 1. It was found that there was no significant
(p > 0.05) difference in the moisture content of poori fried in oils
subjected to increased number of frying cycles. The oil uptake
in the product was found to increase significantly from 28.46
to 36.85% with an increase in number of frying cycles from
1 to 6. The higher oil uptake may be due to the increase in
degradation products and viscosity of the frying medium due
to thermal polymerization and or oxidative deterioration during
cooling, which leads to the higher oil absorption by the
fried product (Blumenthal, 1991). The increase in viscosity of
the oil with an increase in frying cycles results in thickness
of boundary layer between the food being fried and the frying
oil, which consequently results in higher oil uptake (Bouchon
et al., 2003; Moyano and Pedreschi, 2006).