—Banana is an extremely perishable fruit thus
post-harvest quality process changes quickly. Conventional
banana ripeness assessment include sorting and grading based
on human visual evaluation, ethylene hormone treatment,
firmness check by penetrometer and soluble solid content
measurement using refractometer are not effective to give
uniform and quick result. Dielectric spectroscopy has been
applied in agricultural materials as it offers relatively
inexpensive assessment, nondestructive, fast and easy to operate
system. In ripeness assessment, the magnitude phase of
impedance value will increase with ripening stages over certain
frequency. This study showed that impedance measurement
was able to differentiate the unripe, ripe and overripe banana
over the frequency of 20.1kHz to 30.1kHz. Soluble solid content
(SSC) of banana was determined by developed model at the
frequency of 21.1kHz.
—Banana ripeness, dielectric, impedance,
soluble solid content.
D. Jamaludin is with the Faculty of Engineering Universiti Putra
Malaysia (e-mail: firstname.lastname@example.org).
S. Abd Aziz was with Universiti Putra Malaysia. She is now the head
department of Department of Biological & Agricultural Engineering,
N. U. A. Ibrahim is with the Department of Biological & Agricultural
Engineering, Universiti Putra Malaysia (e-mail:
Cite:D. Jamaludin, S. Abd Aziz, and N. U. A. Ibrahim, "Dielectric Based Sensing System for Banana Ripeness Assessment," International Journal of Environmental Science and Development vol. 5, no. 3, pp. 286-289, 2014.