https://scholars.lib.ntu.edu.tw/handle/123456789/605935
標題: | Quality assessment of deep-frying palm oil by impedimetric sensing with a simple and economic electrochemical cell | 作者: | Kung Y PO-CHUAN HSIEH |
關鍵字: | Acid value;Cell constant;Screen-printed carbon electrode;Total polar compounds;Viscosity;Charge transfer;Electrochemical electrodes;Deep frying;Frying oil;Global public health;Polar compounds;Quality assessment;Screen-printed carbon electrodes;Simple++;Total polar compound;Palm oil;palm oil;cooking;electrode;heat;Cooking;Electrodes;Hot Temperature;Palm Oil | 公開日期: | 2021 | 卷: | 21 | 期: | 21 | 來源出版物: | Sensors | 摘要: | Quality control of deep-frying oil is a global public health concern. A simple and economic electrochemical chamber composed of two bare screen-printed carbon electrodes (working area: 78.54 × 102 cm2; distance: 0.0055 cm; cell constant: 0.70 × 10?2 cm?1) was constructed for precisely acquiring the impedimetric responses of a high-resistance palm oil sample (RSD < 7%, n = 3). Good correlations between the measured impedance data (charge transfer resistance and logarithmic out-put impedance (Log Z) obtained in the frequency region <0.1 Hz) and the regulatory quality indicators (total polar compounds and acid value) were achieved (R2 > 0.97), suggesting that the proposed impedimetric sensing method is useful for accurately assessing the deteriorated condition of repeated frying oil. Applications for rapid screening can also be realized because the measurement times of Log Z at any given perturbation frequency from 0.01–1 Hz were all less than 3 min. ? 2021 by the authors. Licensee MDPI, Basel, Switzerland. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85117933205&doi=10.3390%2fs21217093&partnerID=40&md5=2bdad8c3d692daf986c1390023dcc017 https://scholars.lib.ntu.edu.tw/handle/123456789/605935 |
ISSN: | 14248220 | DOI: | 10.3390/s21217093 |
顯示於: | 生物機電工程學系 |
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