Simultaneous Determination of Preservatives in Dairy Products by HPLC and Chemometric Analysis

Table 1

Analytical characteristics of the method validation.

Analyte	Calibration equation	Correlation coefficient	LOD; mg/kg	LOQ; mg/kg	Recovery (%)		RSDr () (%)
					Yogurt	Cheese	Yogurt	Cheese
Sodium benzoate		0.999	0.326	0.989	94.163	93.316	±0.549	±0.799
Potassium sorbate		0.998	0.520	1.575	88.382	85.245	±1.332	±1.394
Natamycin		0.997	0.511	1.548	87.853	87.221	±0.549	±1.646