Artículos de revistas
Validação de metodologia para a determinação simultânea dos antioxidantes sintéticos em óleos vegetais, margarinas e gorduras hidrogenadas por CLAE/UV
Validation of methodology for the simultaneous determination of synthetic antioxidants in vegetables oils, margarine and vegetables hydrogenated fats by HPLC/UV
Registro en:
Química Nova. Sociedade Brasileira de Química, v. 32, n. 5, p. 1189-1194, 2009.
0100-4042
S0100-40422009000500020
10.1590/S0100-40422009000500020
Autor
Takemoto, Emy
Teixeira Filho, José
Godoy, Helena Teixeira
Institución
Resumen
The use of antioxidants either to prevent or retard food's lipids oxidation was approved after inquires that verified their security within a daily intake limit. In this study, the methodology was developed and validated for the analysis of synthetic antioxidants: propylgallate (PG), tert-butylhydroquinone (TBHQ), butylhydroxyanisole (BHA), octylgallate (OG) and butylhydroxytoluene (BHT) in vegetables oils, margarine and hydrogenated fats by high performance liquid chromatographic. The methodology revealed itself efficient, with recovery rates above 90% for all antioxidant substances, besides good linearity in concentration range of 40-240 mg kg-1 (r = 0,999), repeatability with CV < 3,7% and limit of quantification 16.55, 10.32, 1.40, 3.76 and 9.30 mg/kg for BHT, BHA, PG, OG and TBHQ, respectively. 1189 1194