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______________ of moisture measurement is based on chemical reactions.

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in Food Processing Unit Operations by (110k points)
______________ of moisture measurement is based on chemical reactions.

(a) Lyophilization

(b) Karl Fischer method

(c) Halogen drying

(d) Infrared drying

This question was posed to me by my college professor while I was bunking the class.

My question is from Drying topic in section Drying of Food Processing Unit Operations

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Right answer is (b) Karl Fischer method

Easy explanation: Karl Fischer Method of moisture measurement is based on chemical reactions. A chemical reaction happens where the water is separated chemically from the rest of the sample.  The water is then moved to other cell where it is measured.  That measurement is equated with the initial mass of the sample and then moisture content is calculated.

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