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The adsorption and desorption isotherms for a biomaterial are given in the figure below (for a temperature of 40C ). The biomaterial had an initial
The adsorption and desorption isotherms for a biomaterial are given in the figure below (for a temperature of 40C ). The biomaterial had an initial moisture content of 16.5% (\% wet basis) but was then transferred for storage to a room at the same temperature but a different relative humidity. After equilibrium is reached at the new storage conditions, the water activity of the biomaterial is determined to be 0.700 . a. What would be the final equilibrium moisture content (in \% db) of the biomaterial after storage for several weeks in the new conditions? b. What relative humidity does the biomaterial need to be stored at to achieve the desired water activity
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