【作者】 魏丹；

【导师】 王泽南；

【作者基本信息】 合肥工业大学 ， 农产品加工及贮藏工程， 2007， 硕士

【摘要】 荸荠营养丰富，常被用来深加工成荸荠罐头，荸荠果脯等，而富含膳食纤维的果皮则被作为废料处理。同时，膳食纤维作为一种极其重要的功能食品，引起了国内外营养学家的高度重视。论文对化学法提取荸荠加工废弃果皮中膳食纤维的加工工艺进行了实验研究。提取可溶性膳食纤维的实验中，通过单因素及正交试验得到了最佳工艺参数为：盐酸浓度为0.7mol／L、处理温度为80℃、液料比为15∶1(ml∶g)、处理时间为1.5h、原料粒度通过40目筛。最佳工艺条件下可溶性膳食纤维的得率为1.57％。提取不溶性膳食纤维的实验中，通过单因素及正交试验得到了最佳工艺参数为：氢氧化钠浓度4％，处理温度40℃，处理时间1h，原料粒度为通过40目筛。最佳工艺条件下不溶性膳食纤维的提取率为84.5％，纯度为79.1％，得率为12.31％。不溶性膳食纤维的漂白实验中，通过单因素及正交试验得到了最佳工艺参数为：过氧化氢浓度为6％、处理温度为70℃、处理时间为2.5h。最佳工艺条件下得到的漂白后产品色泽雪白，其持水性为7.5g／g，溶胀性为6.2ml／g。更多还原

【Abstract】 Chinese water chestnut is well-fed, it was often used to produce Chinese water chestnut can, or preserved fruit etc., but Pericarp abounded in dietary fiber was dealt with as wasters. At the same time, the dietary fiber is a kind of very important functional food. It impressed the domestic and international nutritionist. The extraction of dietary fiber from Chinese water chestnut with chemical method was investigated.In the experiment of extracting soluble dietary fiber, through single factor and orthogonal experiments, obtained the optimum processing technology: salt concentration was 0.7mol/L, temperature was 80℃, liquid to material was 15 :1（ml:g）, time was 1.5h, the granularity of material is under 40 mesh. In this optimum condition, the yield of dietary fiber was 1.57%.In the experiment of extracting insoluble dietary fiber, through single factor and orthogonal experiments, obtained the optimum processing technology: NaOH concentration was 4%, temperature was 70℃, time was 1h, the granularity of material is under 40 mesh. In this optimum condition, the extraction rate was 84.5%, the purification was 79.1% and the yield was 1.57%.In the study on the blanching of insoluble dietary fiber, through single factor and orthogonal experiments, obtained the optimum processing technology: H₂O₂ concentration was 6%, temperature was 40℃, time was 2.5h. In this optimum condition, the color was snow-white, water-holding capacity was 7.5g/g, swelling properties was 6.2ml/g.更多还原