紫甘薯色素废渣淀粉提取工艺参数研究  

Study on extracting parameters of starch from waste residue of purple sweet potato anthocyanins

作　　者：魏银霞[1] 高路[1] 蔡璐璐[1] 徐美禄 李颖[1] 李冬静[1] 

机构地区：[1]沈阳师范大学粮食学院,辽宁沈阳110034

出　　处：《粮食与油脂》2014年第8期17-19,共3页Cereals & Oils

摘　　要：为了提高紫甘薯综合利用率,该文以提取色素后的紫甘薯废渣为原料,分别采用水和柠檬酸为提取剂,在不同的料液比、浆料pH、浸泡时间、浸泡温度下提取淀粉。通过单因素实验和正交试验确定淀粉的最佳提取工艺条件为:料液比1︰4、浆料pH 5.0、浸提时间2.0 h、浸提温度30℃,此时淀粉提取率为57.49%,淀粉纯度为85.37%。In order to make full use of purple sweet potato and improve comprehensive utilization rate of the raw material,starch was extracted from purple sweet potato anthocyanins waste residue. Experiments were done using water and 1.25% citric acid as solvent respectively under the conditions of different solid-liquid ratio,pH value of slurry,soaking time and soaking temperature. The optimum extracting conditions of starch obtained by single factor experiment and orthogonal experiment were as follow,ratio of sample weight（g）to solvent volume（ml）was 1︰4,pH value was 5.0,soaking time was 2.0 h and soaking temperature was 30 ℃ . Under these conditions,extraction rate could reach 57.49%,and starch purity was 85.37%.

关 键 词：紫甘薯 色素废渣 淀粉 提取参数 

分 类 号：TS235.2[轻工技术与工程—粮食、油脂及植物蛋白工程]