Journal
FOOD ANALYTICAL METHODS
Volume 8, Issue 9, Pages 2243-2249Publisher
SPRINGER
DOI: 10.1007/s12161-015-0102-1
Keywords
pH sensor; Curcumin; Cellophane; CO2; Medical application; Food quality
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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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