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Which one of the following is non-destructive moisture measurement?

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+1 vote
in Food Processing Unit Operations by (110k points)
Which one of the following is non-destructive moisture measurement?

(a) Karl Fischer method

(b) Nuclear moisture meter method

(c) Loss on drying moisture method

(d) Lyophilization

This question was posed to me in exam.

This is a very interesting question from Drying topic in portion Drying of Food Processing Unit Operations

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Correct choice is (b) Nuclear moisture meter method

To explain: In the Nuclear moisture meter technology, the energy is radiated into the sample and the amount of energy absorbed by the sample is measured. Beta radiation and gamma radiations are used for moisture determination. The relationship between absorbed energy and moisture content is then calculated to generate a calibration curve.

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