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Assessment of Microwave Permittivity for Detecting Fruit Maturity

Published online by Cambridge University Press:  15 February 2011

Stuart O. Nelson ,
W. Roy Forbus Jr  and
Kurt C. Lawrence
Stuart O. Nelson
Affiliation:
U. S. Department of Agriculture, Agricultural Research Service, Richard B. Russell Agricultural Research Center, P. O. Box 5677, Athens, GA 30613
W. Roy Forbus Jr
Affiliation:
U. S. Department of Agriculture, Agricultural Research Service, Richard B. Russell Agricultural Research Center, P. O. Box 5677, Athens, GA 30613
Kurt C. Lawrence
Affiliation:
U. S. Department of Agriculture, Agricultural Research Service, Richard B. Russell Agricultural Research Center, P. O. Box 5677, Athens, GA 30613
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Abstract

Permittivity measurements from 0.2 to 20 GHz were taken on fresh peaches of three varieties at three stages of maturity during the growing season to determine whether dielectric properties might be correlated with maturity. Other physical properties of the peach tissue, such as density, moisture content, firmness, and total soluble solids content, were also determined. Two indices, based on dielectric constant and loss factor values at 0.2 and 10 GHz were found to correlate with stage of maturity, but they were dependent on the variety, and further study is necessary to determine their practical usefulness.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 347: Symposium O – Microwave Processing of Materials IV , 1994 , 277
Copyright
Copyright © Materials Research Society 1994

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References

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