【摘要】 以橘皮为原料,稀盐酸为溶剂,超声萃取、乙醇沉淀法提取果胶.探讨了温度、液料比、pH值和超声提取时间等因素对果胶提取率的影响.通过正交实验确定的最佳工艺条件是:pH值为2.0,温度70℃,超声提取时间30 min,浸提液料比为40 mL/g.果胶提取率最高达到13.9%.更多还原

【Abstract】 Extracting pectin from orange peel with ultrasonic-assistant solvent method was studied,hydrochloric as solvent and ethanol as precipitator.The influencing factors including temperature,liquid-to-solid ratio,pH value of the solution and extracting duration are studied.The optimal process conditions were obtained by orthogonal analysis as follows:pH value 2.0,temperature 70 ℃,extracting duration 30min,the liquid-to-solid ratio was 40 mL/g,and at the condition the extracting rate of pectin was 13.9%.更多还原