Abstract
Curcumin-coloured cellophane test strip—fabricated without any synthetic material—is used to determine in situ the instantaneous pH changes in liquids and in the air. A low-cost, portable sensor array for possible medical and food–industrial application is developed. Next to the pH detection, curcumin-coloured test strip can be applied as CO2 monitoring sensor, too. Ongoing processes and the structural changes are followed by ultraviolet-visible (UV-VIS) spectrophotometer, attenuated total reflection-fourier transform infrared spectroscopy (ATR-FTIR) and atomic force microscope (AFM).
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This article does not contain any studies with human or animal subjects.
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Mária Pávai declares that she has no conflict of interest. Judith Mihály declares that she has no conflict of interest. András Paszternák declares that he has no conflict of interest.
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Pávai, M., Mihály, J. & Paszternák, A. pH and CO2 Sensing by Curcumin-Coloured Cellophane Test Strip. Food Anal. Methods 8, 2243–2249 (2015). https://doi.org/10.1007/s12161-015-0102-1
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DOI: https://doi.org/10.1007/s12161-015-0102-1