The Moisture Content/Relative Humidity Equilibrium Relationship Of Wheat - A Review
- 1 January 1993
- journal article
- review article
- Published by Taylor & Francis in Drying Technology
- Vol. 11 (7), 1523-1551
- https://doi.org/10.1080/07373939308916918
Abstract
Thirty three sources of hygroscopic data for wheat are identified. Gravimetric methods predominate in the literature, followed by hygrometric methods which largely employ a dew Point technique for relative humidity determination. Hysteresis effects vary considerably in magnitude. The greatest difference between adsorption and desorption isotherms occurs in the 20–40% RH region. A table of equilibrium moisture contents interpolated from the data sets is presented for a Fixed set of temperatures and RH to enable comparison. The isotherm equations used to fit the data are also revewed. The Strohman-Yoerger, Modified-Oswin, Modified-Chung-Pfost, Chen-Clayton and Modified-Henderson equations are identified as the most suitable. Further investigation is needed to compare them.Keywords
This publication has 50 references indexed in Scilit:
- Comparison of Four EMC/ERH EquationsTransactions of the ASAE, 1989
- Comparison of three routine oven methods for grain moisture content determinationJournal of Stored Products Research, 1984
- Equations for fitting water sorption isotherms of foods: Part 1 — a reviewInternational Journal of Food Science & Technology, 1978
- The Effect Of Temperature On Sorption Isotherms Of Biological MaterialsTransactions of the ASAE, 1971
- Determination of the water activity of some hygroscopic food materials by a dew‐point methodJournal of the Science of Food and Agriculture, 1965
- Solutions for Maintaining Constant Relative HumidityIndustrial & Engineering Chemistry, 1949
- OBSERVATIONS ON THE ADSORPTION OF WATER VAPOR BY WHEATCanadian Journal of Research, 1949
- Hysteresis in the Adsorption of Water Vapour by WheatNature, 1945
- Adsorption of Gases in Multimolecular LayersJournal of the American Chemical Society, 1938
- The Measurement and Control of HumidityBulletin of Entomological Research, 1934