pH and CO2 Sensing by Curcumin-Coloured Cellophane Test Strip
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).
KeywordspH sensor Curcumin Cellophane CO2 Medical application Food quality
Compliance with Ethics Requirements
This article does not contain any studies with human or animal subjects.
Conflict of Interest
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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