Optimization of production yield and functional properties of pectin extracted from sugar beet pulp

► Extraction process of sugar beet pulp pectin (SBPP) on yield, yield stress and tint has been optimized. ► The yield, color, rheological and emulsifying properties of SBPP were measured. ► The flow behavior of SBPP solution followed the Herschel-Bulkley model. ► RSM was used to quantify the integral effect of extraction temperature, time and pH. ► Optimum yield (24.45%), yield stress and tint value were obtained at 93.7 °C, 3 h and pH value of 1.21.