Portable device for dual impedance and mass measurement in fruit ripening assessment

Md Yusof, Adib Azrai and Mohd Mansor, Ahmad Fairuzabadi and Muhamad Atan, Muhammad Khairul Faisal and Ab Rahim, Rosminazuin and Md Ralib, Aliza Aini and Nordin, Anis Nurashikin (2026) Portable device for dual impedance and mass measurement in fruit ripening assessment. Journal of Food Measurement and Characterization, 20 (4). pp. 5707-5719. ISSN 2193-4126 E-ISSN 2193-4134

	PDF - Published Version Restricted to Registered users only Download (5MB) | Request a copy
	PDF - Supplemental Material Restricted to Registered users only Download (145kB) | Request a copy
	PDF - Supplemental Material Restricted to Registered users only Download (294kB) | Request a copy

Abstract

Quality assessment of fruit ripeness is critical for reducing postharvest losses and ensuring consumer satisfaction. However, conventional methods for evaluating fruit maturity are typically destructive, labour-intensive, and unsuitable for continuous monitoring. This study presents a portable, low-cost dual-sensor device that enables non-destructive monitoring of fruit ripening through simultaneous measurements of electrical impedance and mass. The system integrates an AD5933-based impedance spectroscopy module and a strain-gauge load cell with an HX711 amplifier, controlled by an Arduino UNO for real-time data acquisition and storage. Impedance spectroscopy was conducted over a frequency range of 4–30 kHz using a 400 mV excitation voltage, while the load cell provided high-resolution weight measurements. Electrical validation using a 1 kΩ–1 µF parallel RC circuit demonstrated close agreement between measured and theoretical impedance magnitude and phase responses, and load cell calibration showed a relative error of less than approximately 2%. A seven-day proof-of-concept study on Musa acuminata bananas revealed clear ripening-related trends, including a decrease in impedance magnitude at 12 kHz from approximately 6.5 kΩ on Day 0 to 5.5 kΩ by Day 7, a progressive phase shift toward more resistive behaviour, and a steady reduction in fruit mass attributed to moisture loss. These combined electrical and mass variations indicate that the proposed dual-parameter sensing approach effectively captures physiological changes associated with fruit ripening. Overall, the results demonstrate that the developed device provides a practical and scalable platform for non-destructive fruit quality monitoring, with potential for further development toward broader agricultural applications.

Item Type:	Article (Journal)
Uncontrolled Keywords:	AD5933, electrical impedance spectroscopy, fruit ripening, non-destructive sensing, portable sensor system, load cell measurement
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Dr. Ahmad Fairuzabadi Mohd Mansor
Date Deposited:	14 May 2026 13:15
Last Modified:	14 May 2026 13:15
URI:	http://irep.iium.edu.my/id/eprint/127173

Actions (login required)

View Item