Spectrophotometric determination of various polyanions with polymeric film optodes using microtiter plate reader

► A new titrimetric analysis method to detect polyanions in food products. ► Application of polycation sensitive optical sensing films for detection of several polyanions like DNA, pentosanpolysulfate(PPS), xanthan, alginate and carrageenan. ► A microtiter plate-based titrimetric assay to detect thickening agents in foods.