Crispy banana obtained by the combination of a high temperature and short time drying stage and a drying process

Brazilian Journal of Chemical Engineering

K. Hofsetz¹  C. C. Lopes¹ 

[1] ,State University of Campinas Dept. of Food Engineering, Faculty of Food Engineering Laboratory of Applied TechnologyCampinas SP ,Brazil

关键词: Banana;    Drying;    Crispness;    Texture;    Food;   

DOI  :  10.1590/S0104-66322005000200017

来源: SciELO

【 摘 要 】

The effect of the high temperature and short time (HTST) drying stage was combined with an air drying process to produce crispness in bananas. The fruit was dehydrated in an air drier for five minutes at 70°C and then immediately set at a HTST stage (130, 140, 150°C and 9, 12, 15 minutes) and then at 70°C until water activity (a w) was around 0.300. Crispness was evaluated as a function of water activity, using sensory and texture analyses. Drying kinetics was evaluated using the empirical Lewis model. Crispy banana was obtained at 140°C-12min and 150°C-15min in the HTST stage, with a w = 0.345 and a w = 0.363, respectively. Analysis of the k parameter (Lewis model) suggests that the initial moisture content of the samples effects this parameter, overcoming the HTST effect. Results showed a relationship between sensory crispness, instrumental texture and the HTST stage.

【 授权许可】

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