摘要
采用真空冷冻干燥(FD)、真空干燥(VD)和热风干燥(HAD)的方法干制沙葱,将干制沙葱研磨后制得沙葱粉,探究不同粒度沙葱粉的品质特征.结果表明:干燥方法对沙葱粉的得率、复水性、堆积密度、流动性、色泽均有显著影响(P＜0.05).FD沙葱粉的平均粒度最小为30 μm;堆积密度最大为1.57g/mL;亮度最高为56;休止角最大为47.77°.HAD和VD沙葱粉的微观形态分布均匀,由圆形、椭圆等颗粒形状组成,颗粒之间较分散.FD沙葱粉的微观形态由片状、碎屑状等颗粒形状组成,颗粒之间较聚集,堆积密度较高,制取较大颗粒(50目)沙葱粉时得率最高达50％.
Abstract
Allium mongolicum Regel must be made into powder so as to be used widely in the food industry,and the quality of Allium mongolicum Regel powder determines the application range of Allium mongolicum Regel.In this paper,the methods of vacuum freeze drying(FD),vacuum drying(VD)and hot air drying(HAD)were used to dry Allium mongolicum Regel,and the dried Allium mongolicum Regel were ground to obtain Allium mongolicum Regel powder,and the quality characteristics of Allium mongolicum Regel powder with different particle sizes were further explored.The results showed that the drying method had significant effects on the yield,rehydration,bulk density,fluidity and color of Allium mongolicum Regel powder(P＜0.05).FD powder has the smallest average particle size(30µm),the largest bulk density(1.57 g/mL),the highest brightness(56)and the highest angle of repose(47.77°).The micromorphological distribution of HAD and VD A llium mongolicum Regel powder is uniform,composed of round,oval and other particle shapes,and the particles are more dispersed.The micromorphology of FD Allium mongolicum Regel powder is composed of flakes,chips and other particle shapes,and the particles are more aggregated with higher bulk density.The other characteristics of FD Allium mongolicum Regel powder is highest yield(50％)when bigger particle(50 mesh)is ob-tained.
维普
万方数据