2023
DOI: 10.1590/0103-8478cr20220498
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Smartphone-based rapid and low-cost method for the determination of eugenol content of clove essential oil

Abstract: The determination of eugenol in clove essential oil was performed using a smartphone-operated device, which was used for image capture and processing. The colorimetric reaction with the Folin-Ciocalteu reagent was used, and the lighting conditions were evaluated to capture images directly in 2 mL disposable vessels. The free application PhotoMetrix UVC was used for partial least squares regression calibration with suitable values (R² greater than 0.99). The accuracy of the proposed method was compared with tra… Show more

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