【摘要】 酸浸提法提取果胶具有快速、简便、易于控制、提取率较高等特点 ,用盐酸浸提、乙醇沉淀法进行了从桔皮中提取果胶的工艺试验。研究结果表明 ,提取的液料质量比为 10～ 15、浸提液为 p H2～ 3、浸提时间为 4 5～6 0 m in、浸提温度为 80℃左右时 ,果胶提取效果较好。在单因素试验的基础上用正交试验进行工艺参数的优化 ,其适合的工艺条件是 :液料质量比为 10、浸提液 p H值为 2、浸提温度为 80℃、浸提时间为 4 5 min,在此工艺条件下进行试验 ,其果胶提取率达 70 .6 8%。更多还原

【Abstract】 The acid soaking method used for pectin extraction has the features of quick ext raction,simple operation,convenient control and high extraction rate. The expe riments of pectin extraction from orange peel were carried out,by the hydrochlo ric acid extraction method and the ethanol deposition method. The result shows t he pectin extraction rate is high when the ratio of solution/material is 10～15 , pH of solution 2～3,time 45 min, and temperature around 80℃. On the ba se of single factor trial,the orthogonal trial was used in optimization of tech nological parameters. The feasible technological conditions are 10 of solution/m aterial ratio,pH value 2,80℃ of temperature and 45 min of time. By the above condition,the of pectin extraction rate can be 70.68%.更多还原