Year: 2025 | Month: June | Volume 15 | Issue 1
Moisture Sorption Isotherms of Tender Cashew Kernel at Varied Temperatures
Shrikant Baslingappa Swami* and N.J. Thakor
DOI:June
Abstract:
Adsorption-desorption behaviors of tender cashew kernel were studied at different relative humidity (ERH) ranging
from 0 and 100% and temperatures at 30, 40, 50 and 60°C following the static equilibriation technique using the saturated
solutions of various salts. These data were analysed and fitted Guggenheim-Anderson-de Boer (GAB) sorption model. The
temperature dependence of the respective coefficients revealed that the GAB model is acceptable (r2 ≥ 0.994; MRES ≤ 904) in
describing the EMC-ERH relationships of the tender cashew kernel. The M0, C and K values were in the range of 5.740-
5.645, 375.538-111.550 and 0.504-0.490 for adsorption. The corresponding values for desorption are 13.274-12.935, 808.516-
342.936 and 0.427-0.421. The net isosteric heats of sorption estimated from the Clausius-Clapeyron equation, decreased
exponentially from 1.17 to 0.60 kJ mol-1 with the increase in moisture content of the sample 8 % to 23% (db) for adsorption.
The corresponding values were 5.75 to 0.684 kJ mol-1 for desorption.
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