A food freshness sensor using the multistate response from analyte-induced aggregation of a cross-reactive
Marc S Maynor1, Toby L Nelson, Caroline O'Sullivan
1Department of Chemistry & Biochemistry, University of South Carolina, 631 Sumter Street, Columbia, South Carolina 29208, USA.
Abstract:
A single cross-reactive conjugated polymer generates a multidimensional response capable of identifying and differentiating between 22 structurally similar and biologically relevant amines with 97% accuracy in a highly competitive aqueous environment. Statistical analysis on an array of wavelengths was used to assess the viability of this approach. In a separate investigation, the multidimensional response from a single cross-responsive poly(thiophene) has been analyzed using a different ratiometric method to quantify the amount of biogenic amine present in a fish matrix, thereby evaluating the quality of the food.
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