Abstract
A sensitive and new solid-phase spectrophotometry for the determination of tartrazine in soft drinks has been developed. In this method, β-cyclodextrin epichlorohydrin polymer (β-CDP) of 60-80 mesh, which has less background absorbance in ultraviolet and visible region compared to other ion-exchanger resins, was used to support direct adsorption of tartrazine from aqueous solutions to form a solid complex (tartrazine-β-CDP complex). The effects of pH, temperature, time and ionic strength on the β-CDP including tartrazine were determined. The optimum conditions were obtained (pH, 1.0; temperature, 20°C; time, 40 min). The method was applied for the direct solid phase spectrophotometric determination of tartrazine in soft drink samples at the maximum absorption wavelength of 435 nm with satisfactory results.
Recommended Citation
Li, R.; Jiang, Z.-T.; and Liu, Y.-H.
(2008)
"Direct solid-phase spectrophotometric determination of tartrazine in soft drinks using β-cyclodextrin polymer as support,"
Journal of Food and Drug Analysis: Vol. 16
:
Iss.
5
, Article 6.
Available at: https://doi.org/10.38212/2224-6614.2327
