不同干燥方式对南果梨干理化指标及质构特性的影响

Effects of Different Drying Methods on Dry Physicochemical Index and Texture Characteristics of Nanguo Pear

研究了真空冷冻干燥和热风干燥方式对南果梨干理化指标和质构的影响。结果表明,在真空冷冻干燥条件下南果梨干的可滴定酸度、总酚含量、回复性指标均优于热风干燥,总糖含量低于热风干燥;真空冷冻干燥条件对南果梨干的硬度、咀嚼性、内聚性质构优于热风干燥,弹性不及热风干燥。

The effects of vacuum fi＇eeze drying and hot air drying on dry physicochemical index and texture of Nanguo pear were studied. The results showed that the titratable acidity and total phenol content of Nanguo pear were titratable under vacuum freeze drying condition. The recovery index was better than that of hot air drying, and the total sugar content was lower than that of hot air drying. The hardness, mastication and cohesion of Nanguo pear dried by vacuum freeze-drying conditions were better than that of hot air drying, and the elasticity was not as good as that of hot air drying.