Ohmic heating is an alternative fast and uniform heating which can extract biomaterials more efficiently than the conventional heating from plant cell walls. Central Composite Design: was employed to study the effect of voltage gradient, temperature and time on the yield, galacturonic acid content and degree of esterification of the pectin. Results: showed that the highest yield of pectin (14.32 g/100 g d. m.) was obtained at the optimum conditions including voltage gradient of 15 V/cm, temperature of 90 degrees C during 30 min and was significantly (p < 0.05) higher than the pectin yield obtained by conventional method (13.53 g/100 g d. m.). The emulsifying activity of the pectin extracted under the optimal conditions was 67.18 +/- 3.77% which was similar to those obtained from the pectin extracted by conventional heating. In addition, the emulsions were maintained 91.88 to 94.87% stable after 30 days of storage. The flow behavior of the optimal pectin solutions at concentration of 0.5% w/v was the Newtonian, while at higher concentration (2% w/v), pseudoplastic flow was observed.