CeO2NPs Based Capacitive Sensor for Quantification of Limonin in Citrus Limetta Juice

Citrus fruit juices are beneficial to health immunity due to having antiviral, antifungal, and antioxidant properties. However, acceptability of its juices reduces due to the delayed bitterness caused mainly by the biomolecule limonin. Hence, continuous monitoring of limonin in juices is required to...

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Bibliographic Details
Published in:IEEE sensors journal 2023-04, Vol.23 (7), p.7591
Main Authors: Das, Satyajit, Sahu, Partha Pratim
Format: Article
Language:English
Subjects:
Biomolecules
Bitterness
Cerium oxides
Citrus fruits
Fungicides
High performance liquid chromatography
Juices
Monitoring
Nanoparticles
Sensors
Substrates
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Summary:Citrus fruit juices are beneficial to health immunity due to having antiviral, antifungal, and antioxidant properties. However, acceptability of its juices reduces due to the delayed bitterness caused mainly by the biomolecule limonin. Hence, continuous monitoring of limonin in juices is required to keep its limit within permissible level. Here, CeO2 nanoparticles (NPs) based capacitive sensor has been introduced for the first time to quantify limonin concentration in citrus limetta juice. The CeO2NPs were synthesized through a low-cost and eco-friendly method using Dillenia Indica aqueous extract. The capacitive sensor was designed and simulated using COMSOL multiphysics and fabricated by drop coating of CeO2NPs on interdigitated electrode (IDE) structure patterned on paper substrate. The sensor exhibits an excellent sensitivity of [Formula Omitted]9.62 [Formula Omitted]/ppm and a fast response time of [Formula Omitted]13 s. The sensor’s performance was validated using high-performance liquid chromatography (HPLC) analysis. The developed sensor assures easy, on-site, eco-friendly, and rapid monitoring of limonin level in citrus juices.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2023.3241384