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Novel impedance measurement technique for soluble solid content determination of banana


Ibrahim, Nur Ul Atikah and Abd Aziz, Samsuzana and Mat Nawi, Nazmi (2017) Novel impedance measurement technique for soluble solid content determination of banana. Pertanika Journal of Science & Technology, 25 (2). pp. 519-526. ISSN 0128-7680; ESSN: 2231-8526


Soluble solid content (SSC) is one of the important traits that indicate the ripeness of banana fruits. Determination of SSC for banana often requires destructive laboratory analysis on the fruit. An impedance measurement technique was investigated as a non-destructive approach for SSC determination of bananas. A pair of electrocardiogram (ECG) electrode connected to an impedance analyser board was used to measure the impedance value of bananas over the frequency of 19.5 to 20.5 KHz. The SSC measurement was conducted using a pocket refractometer and data was analysed to correlate SSC with impedance values. It was found that the mean of impedance, Z decreased from 10.01 to 99.93 KO at the frequency of 20 KHz, while the mean value of SSC increased from 0.58 to 4.93 % Brix from day 1 to day 8. The best correlation between impedance and SSC was found at 20 KHz, with the coefficient of determination, R2 of 0.87. This result indicates the potential of impedance measurement in predicting SSC of banana fruits.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Publisher: Universiti Putra Malaysia Press
Keywords: Banana ripeness; Impedance measurement; Non-destructive; Soluble solid content (SSC)
Depositing User: Nabilah Mustapa
Date Deposited: 07 Jun 2017 02:01
Last Modified: 07 Jun 2017 02:01
URI: http://psasir.upm.edu.my/id/eprint/52521
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