Effect of different drying methods on the quality of Zizania latifolia granules
This paper took Zizania latifolia granules as the text materials. Effects of different drying methods, hot air drying, microwave drying, microwave spouted drying, vacuum freeze-drying, on rehydration ratio, color, texture properties, Vc of dried Zizania latifolia were researched. The drying time and consumption of different drying methods were compared. The results showed that the quality of dried Zizania latifolia by vacuum freeze-drying is the best, but also the energy consumption that 20 times of the microwave spouted drying is the highest. The quality of dried Zizania latifolia by microwave spouted drying is better than hot air drying which energy consumption is 7 times of microwave drying. Drying time of microwave drying which have the worst quality is the shortest, so it have the lowest energy consumption.Actually, considering quality and energy consumption, microwave spouted drying is a potential drying method.