CAVALCANTI, Maria Eduarda Ramos de Rangel Moreira.; SILVA, Francisco de Assis Santos e.; MATA, Eduardo Rangel Moreira Cavalcanti.; DUARTE, Maria Elita Martins.; DIAS, Vanucia Santos.; Anna Sylvia Ramos de Rangel Moreira.
Abstract:
The objectives of this study were: a) to determine the hygroscopic equilibrium isotherms of the white
bean and black bean, at temperatures of 20, 30, 40 and 50 oC and with air relative humidity from 10
to 90%, and to test 6 mathematical models; b) to determine the variation in size (length, width and
thickness) and of the radius of the equivalent sphere of white bean and black bean as a function of
moisture content from 10 to 45%, wet basis. It is concluded in this work, that the Oswin model had
the largest coefficient of determination (99.2%) and the Cavalcanti Mata model had the lowest
percentage of error, and that the variation in size (length, width and thickness) of the white bean and
black bean, increase in a linear fashion with the increase of the moisture content.
