Kundu, Sumit and Gangopadhyay, Deepam and Banerjee, Mahuya Bhattacharyya and Nag, Shreya and Pramanik, Panchanan and Roy, Runu Banerjee (2025) A molecular imprinted polymer tethered QCM sensor to classify lemongrass essential oils. Sensors and Actuators A-Physical, 383. ISSN 0924-4247, DOI https://doi.org/10.1016/j.sna.2025.116234.
Full text not available from this repository.Abstract
Citral is the major constituent of lemongrass essential oil (LEO) which has widespread use in pharmaceutical, culinary and cosmetic industries due to its characteristic lemon aroma. The present study uses a quartz crystal microbalance sensor coated with a specific molecularly imprinted polymer to detect citral in several LEOs. The surface of the quartz crystal had been modified by a citral imprinted copolymer of acrylonitrile and methacrylic acid. Fourier transform infrared (FTIR) spectroscopy and a scanning electron microscope (SEM) were employed to establish the surface morphology. The suggested sensor demonstrated a linear operation from 10 to 600 ppm (parts per million) with a sensitivity of 0.172 Hz/ppm. The sensor has a good repeatability of 93.989 % and reproducibility of 91.969 %. There was a substantial correlation between sensor performance and gas chromatographic analysis of LEO samples having average prediction accuracy of 96.642 %, obtained from the PLSR model. Principal component analysis (PCA) demonstrated the clustering of these four samples. Furthermore, the chemometric analysis was done using the sensor response data with three classifiers, k nearest neighbors (KNN) model, an artificial neural network (ANN) with a back-propagation multilayer perceptron (BPMLP) model, and a support vector machine (SVM). The classifier trio had a respectable overall accuracy of 84 %, with KNN outperforming the others at 85.687 %.
| Item Type: | Article |
|---|---|
| Funders: | Department of Science & Technology (India) Science Engineering Research Board (SERB), India [Grant No: SUR/2022/002832] |
| Uncontrolled Keywords: | Lemongrass essential oil; Citral; MIP; QCM; KNN; BPMLP; SVM |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Divisions: | Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 01 Oct 2025 08:03 |
| Last Modified: | 01 Oct 2025 08:03 |
| URI: | http://eprints.um.edu.my/id/eprint/47986 |
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