Abstract (EN):
This study describes for the first time the development and validation of an extraction procedure for the quantification of 5-hydroxymethylfurfural (HMF) in coated deep-fried products by liquid chromatography with photodiode array detection. The method entailed the extraction of HMF with ethyl acetate/hexane (4:1) followed by a concentration step with 40 mM sodium formate (pH = 3)/methanol (1:1). The optimum combination of the extraction variables was achieved by response surface methodology. Sample amount and concentration solvent volume showed a notable influence on HMF yield, while the effect of extraction solvent volume seemed to be less marked. From experimental results, 5 g of sample, 10 ml of the extraction solvent, and 550 mu l of the concentration solvent were selected as optimal combination. The consistency between predicted and experimented values as well as in the quality parameters was observed. Quantities of HMF in coated deep-fried fish products were 1.25 +/- 0.21 mu g g(-1).
Idioma:
Inglês
Tipo (Avaliação Docente):
Científica
Nº de páginas:
7