Pitahaya aging diagnostic by impedance/capacitance spectroscopy
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Undergraduate course
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Publisher
Springer
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Article
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Abstract
Impedimetric/capacitive analyses were used as a non-destructive analytical tool for the determination of yellow pitahaya (Selenicereus megalanthus Haw.) aging. Pitahaya is an exotic fruit of increasing commercial importance, in which sensing the level of maturation plays a major role. The impedimetric analysis of the fruit's normal deterioration was performed with a homemade probe with two needle silver electrodes. The most sensitive changes on the impedance/capacitance spectra were found at a low-frequency region, where it was possible to build a linear analytical curve between the instrumental response and the aging time.
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Keywords
Bioimpedimetry, Biosensor, Fruit analysis, Food quality
Language
English
Citation
Food Analytical Methods. New York: Springer, v. 8, n. 1, p. 126-129, 2015.
