title: Optimization of production yield and functional properties of pectin extracted from sugar beet pulp.
abstract: A central composite design was employed to determine the optimum extraction condition to obtain higher yield, better color attribute as well as better rheological and emulsifying properties in pectin extracted from sugar beet pulp (SBP). A second-order polynomial model was developed for predicting the yield of sugar beet pulp pectin (SBPP) based on the composite design. Response surface methodology (RSM) was used to quantify the integral effect of three processing parameters (extraction temperature, time and pH) on yield, yield stress, color attribute (tint value) and emulsifying activity index (EAI). Through the frequency analysis it was found that the optimal temperature, time and pH value of the extraction were 93.7 °C, 3 h, and 1.21, respectively. The yield, yield stress and tint value of the SBPP extracted at the optimal condition were 24.45%, above 0.1 Pa and -6.0, respectively.
authors.affiliation: College of Engineering, China Agricultural University, P.O. Box 50, 17 Qinghua Donglu, Beijing 100083, China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Lv
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Li-jun
authors.initials: LJ
authors.lastname: Wang
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.forename: Benu
authors.initials: B
authors.lastname: Adhikari
mesh_terms: D027461:Beta vulgaris / Q000737:chemistry*; D003116:Color; D006863:Hydrogen-Ion Concentration; D015233:Models, Statistical; D010368:Pectins / Q000737:chemistry* / Q000302:isolation & purification; D013696:Temperature; D013997:Time Factors
chemical_list: D010368:Pectins