414631.fig.005a
(a)
414631.fig.005b
(b)
Figure 5: Calibration curves of the protonated MCYST-LR molecular ion in MeOH and estimated calibration curves in food additives matrices (salmon hydrolyzate and Stigeoclonium sp. extract). From (a) to (b) estimated calibration curve in salmon hydrolyzate and estimated calibration curve in Stigeoclonium sp. extract. The blue stars represent the measured calibration curve of the protonated MCYST-LR molecular ion in MeOH. The red circles represent the measured calibration curve of the protonated MCYST-LR molecular ion in the given food additive matrix. The green lines represents the estimated calibration curve of the protonated MCYST-LR molecular ion in a given food additive matrix. Units for graph axes are follows: μg/mL for the -axis and counts for the -axis.