摘要
采用酶碱法提取马铃薯皮渣中的膳食纤维,并分别设计正交试验对马铃薯皮渣脱色及淀粉水解条件进行了优化研究,结果表明:脱色的最佳工艺条件是用95%乙醇浸提,料液比为1∶4(g/m L),温度为50℃,p H为5,浸提时间为150 min;水解淀粉的最佳工艺是温度为65℃,时间为120 min,料液比为1∶9(g/m L),p H为6.5,酶浓度为0.8%。膳食纤维提取率可达57.00%。
Dietary fiber was extracted from potato residue by enzymic and alkaline hydrolysis. The principe of orthogonal test was adopted to optimization study on potato decolorization and starch hydrolysis.The results showed that optimal conditions of potato decolorization were using 95 % ethanol ertraction,ratio of material to liquid was 1 ∶ 4(g/m L),temperature was 50 ℃,p H was 5,extraction time was 150 min. The optimal conditions of starch hydrolysis were that temperature was 65 ℃,time was 120 min,ratio of material to liquid was 1 ∶ 9(g/m L),p H was 6.5,enzyme concentration was 0.8 %.The recovery ratio of dietary fiber was up to 57.00 %.
出处
《食品研究与开发》
CAS
北大核心
2015年第22期33-35,共3页
Food Research and Development
基金
中央高校基本科研业务费专项资金项目(31920140095)
国家自然科学基金(31260098)
西北民族大学2015年开放项目
国家民委中青年英才计划([2014]121号)
2013年西北民族大学创新团队项目
关键词
马铃薯皮渣
膳食纤维
脱色
淀粉水解
potato residue
dietary fiber
decolorization
starch hydrolysis
