Simultaneous determination of anthocyanin and ponceau 4R in drink powders by derivative spectrophotometry and partial least-squares multivariate spectrophotometric calibration


Ozgur M. , Bozdogan A. E. , ERCAG A., Koyuncu I.

MONATSHEFTE FUR CHEMIE, vol.132, no.6, pp.669-673, 2001 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 132 Issue: 6
  • Publication Date: 2001
  • Doi Number: 10.1007/s007060170080
  • Title of Journal : MONATSHEFTE FUR CHEMIE
  • Page Numbers: pp.669-673

Abstract

Two methods for the simultaneous determination of anthocyanin and ponceau 4R in drink powders by second derivative spectrophotometry and by partial least-squares multivariate spectrophotometric calibration are described. The procedures do not require any separation step. The methods were applied to determine both colorants in commercial gelatin powders; the results obtained are compared.