抗性糊精分离纯化方法研究

摘要

抗性糊精具有低甜度、低热量、耐热、耐酸、难发酵等特点，能调节人体肠道菌群，改善血糖和脂肪代谢，降低血清胆固醇，促进矿物质吸收，在食品工业应用广泛。分离纯化是制备高纯度抗性糊精的重要工序，介绍了微生物发酵、纳滤、离子交换色谱、模拟移动床以及酶法分离纯化抗性糊精的方法及其原理，为制备高纯度抗性糊精提供了技术指导。%Characterized with low quantity of heat,heat-resisting,anti-acid,anti-fermentation and other excellent physico-chemical properties,resistant dextrin could adjust the human intestinal flora,improve blood sugar and fat metabolism,reduce serum cholesterol and promote mineral absorption,which was widely used in food industry.Separation and purification was an important process to prepare high-purity resistant dextrin.The method and principles of microbial fermentation,nano filtration, ion-exchange chromatography,simulated moving bed and enzymatic purification were introduced,which could provide theoretical guidanceforthepreparationofhighpurityresistantdextrin.