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Moisture sorption isotherms and isosteric heat of sorption of dry persimmon leaves
- Martínez-Las Heras, R., Heredia, A., Castelló, M.L., Andrés, A.
- Food bioscience 2014 v.7 pp. 88-94
- equations, heat, leaves, models, persimmons, relative humidity, sorption, sorption isotherms, temperature, water content
- Moisture sorption isotherms of persimmon leaves were determined at 20, 30 and 40°C using the standard gravimetric static method over a range of relative humidity from 0.06 to 0.9. The experimental sorption curves were fitted by seven equations: Henderson, Halsey, Smith, Oswin, BET, GAB and Caurie. The Halsey, Smith, GAB and BET models were found to be the most suitable for describing the sorption curves. The isosteric heat of sorption of water was determined from the equilibrium data at different temperatures. It decreased as moisture content increased and was found to be a polynomial function of moisture content.