Food Analytical Methods

, Volume 8, Issue 9, pp 2243–2249 | Cite as

pH and CO2 Sensing by Curcumin-Coloured Cellophane Test Strip

  • Mária Pávai
  • Judith Mihály
  • András Paszternák
Article

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).

Keywords

pH sensor Curcumin Cellophane CO2 Medical application Food quality 

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Mária Pávai
    • 1
  • Judith Mihály
    • 1
  • András Paszternák
    • 1
  1. 1.Research Centre for Natural Sciences, Hungarian Academy of SciencesInstitute of Materials and Environmental ChemistryBudapestHungary

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