Objective: To optimize the conditions of the vacuum belt drying process(VBD) for drying Panax notoginseng extract and compare with methods of vacuum freezing drying and spray drying.

• 目的:研究确定三七浸膏真空带式干燥的最优工艺条件,并与喷雾干燥和真空冷冻干燥方法比较干燥效果。