Nanocarbon–{[Na10(PrW10O36)]2·130H2O} composite to detect toxic food coloring dyes at nanolevel

Taposhree Dutta,Sabyasachi Sarkar

doi:10.1007/s13204-016-0529-8

Abstract

Monitoring of adulterated and toxic food colors is important due to their potential toxicity and pathogenicity. Here, we repot an Ln–POM (lanthanide polyoxometalate) cluster, {[Na10(PrW10O36)]2·130H2O}, with carbon nano-onion (CNO) hybrid composite which is a highly efficient sensor for the rapid detection of toxic dyes like metanil yellow, auramine O, Orange II and in allura red (red 40) as low as 3.83; 4.73; 4.14 and 2.90 nmol ml−1 concentration, respectively, by fluorescence spectroscopy.

Highlights

Serving of colorful food is esthetically pleasant to raise good appetite
We focused on the application of carbon nano-onion (CNO)–Pr–POM hybrid and its use to detect the trace amount of toxic color used in food materials is described
We tried first with metanil yellow to check the behavior of Ln–POM cluster and CNO by fluorescence spectroscopy, in the presence of 1.71 9 10-5 Ln– POM cluster with different concentration of aqueous solution of metanil yellow, no change was observed in the intensity of its yellow color; rather in the presence of 3.43 9 10-6 mol ml-1 CNO, there is a change in intensity but that was in the micro range (1.03 9 10-2 lmol ml-1) (Fig. 4)

Summary

Introduction

Serving of colorful food is esthetically pleasant to raise good appetite. To dress food material, extensive coloring materials are in use. We repot an Ln–POM (lanthanide polyoxometalate) cluster, {[Na10(PrW10O36)]2Á130H2O}, with carbon nano-onion (CNO) hybrid composite which is a highly efficient sensor for the rapid detection of toxic dyes like metanil yellow, auramine O, Orange II and in allura red (red 40) as low as 3.83; 4.73; 4.14 and 2.90 nmol ml-1 concentration, respectively, by fluorescence spectroscopy.

Results

Conclusion