FOOD PROCESSING AND PRESERVATION
DRYING AND DEHYDRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The following technical terms Which of the following is related to moisture sorption isotherm?
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Relative humidity
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Hysteresis
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Desorption & Adsorption
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Sigmoid curve
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right on all counts
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Explanation:
Detailed explanation-1: -Type IV isotherm is a variation of Type II, but with a finite multi-layer formation corresponding to complete filling of the capillaries. The adsorption terminates near to a relative pressure of unity. This type of isotherm is obtained by the adsorption of water vapour on activated carbon at 30 oC.
Detailed explanation-2: -Moisture sorption isotherms describe the relationship between water activity and moisture content at a constant temperature. The nature of this relationship depends on the interaction between water and other ingredients.
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