Validated Spectrophotometric Methods for Simultaneous Determination of Food Colorants and Sweeteners

Figure 2

Zero-order spectra (a) of 10 μgmL⁻¹ IND, 10 μg.mL⁻¹ BB and their binary mixture and first derivative spectra (b) of colorants (IND: a: 2, b: 4, c: 6, d: 8, e: 10 μgmL⁻¹; BB: f: 2, g: 4, h: 6, i: 8, j: 10 μgmL⁻¹).

(a)

(b)