不同干燥方法对三七内部结构和复水品质的影响

摘要

对比研究真空冷冻干燥、真空干燥和热风干燥对三七内部结构和复水品质的影响。采用微CT技术对干燥样品进行扫描和图像重构,计算干燥样品的孔隙率和复水比,对3种干燥方法所得样品的复水品质进行对比分析。结果表明：3种干燥方法对孔隙率和复水比都有极显著影响（P〈0.01）。从内部结构的保持和复水品质角度来看,真空冷冻干燥优于其他两种干燥方法,较适于工业生产。%The influence of vacuum freeze-drying,vacuum drying and hot-air drying on the inner structure and rehydration quality of Radix Notoginseng（dried roots of Panax notoginseng） was comparatively investigated.Porosity and rehydration rate of dried samples were calculated based on Micro-CT scanning and image reconstruction.All the three drying methods had a highly significant impact on porosity and rehydration rate of dried samples.In terms of inner structure maintenance and rehydration quality,vacuum freeze-drying was superior to the other two methods and more suitable for industrial production.