Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/42489
Title: Isotermas de sorção e propriedades termodinâmicas de sementes de maracujá doce
Other Titles: Moisture sorption isotherms and thermodynamic properties of passion fruit seeds
Isotermas de sorción y propiedades termodinámicas de semillas de maracuyá Dulce
Keywords: Equilíbrio higroscópico
Passiflora
Calor isostérico integral
Entropia diferencial
Energia livre de Gibbs
Hygroscopic equilibrium
Integral isosteric heat
Differential entropy
Gibbs free energy
Issue Date: 2020
Publisher: CDRR Editors
Citation: ISQUIERDO, E. P. et al. Isotermas de sorção e propriedades termodinâmicas de sementes de maracujá doce. Research, Society and Development, Vargem Grande Paulista, v. 9, n. 5, p. e44952884, 2020. DOI: 10.33448/rsd-v9i5.2884.
Abstract: The objective of this work was to determine the adsorption isotherms of sweet passion-fruit seeds, select the mathematical model that best describes the hygroscopic behavior of these seeds and estimate the integral isosteric heat, the differential entropy and Gibbs free energy to the conditions studied. The equilibrium moisture content of the seeds was obtained by the static-gravimetric method. To condition the equilibrium environment, the seeds were placed in sealed containers containing different saturated saline solutions and placed in chambers type B.O.D. regulated at temperatures of 10, 20, 30 and 40 ºC. Analyzing the results obtained conclude that: The equilibrium moisture content of passion-fruit seeds is directly proportional to water activity and decreases as the temperature increases; Among the models tested, the Chung Pfost model is the one that best represents the hygroscopicity of sweet passion-fruit seeds; With the reduction of the moisture content of the seeds, the integral isosteric heat of adsorption, the differential entropy and the Gibbs free energy increase; The adsorption process of sweet passion-fruit seeds is controlled by enthalpy.
URI: http://repositorio.ufla.br/jspui/handle/1/42489
Appears in Collections:DEA - Artigos publicados em periódicos
DEG - Artigos publicados em periódicos

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