Metallic contaminants in Andalusian vinegars

Abstract

A study on the content of several metallic ions and arsenic in Andalusian vinegars has been carried out.The technique employed was atomic absorption spectrophotometry. The measurements were performed directly in the samples. The determination of these ions is interesting since they can produce in certain amounts undesirable organoleptic effects or even make an attempt on the health (toxic elements). No kind of relevant contamination was found.

Dilute-and-shoot procedure for the determination of mineral constituents in vinegar samples by axially viewed inductively coupled plasma optical emission spectrometry (ICP OES)

“…(Artiles et al 1993;Gonzalez and Chozas 1988;Guerrero et al 1996;Guerrero et al 1997;Rizzon and Miele 1998 with those obtained from other authors (Gonzalez and Chozas 1988;Artiles et al 1993;Guerrero et al 1996Guerrero et al , 1997Rizzon and Miele 1998) using several commercial vinegar samples from different sources (Table IV). The results showed a large variability in the analytes concentration values determined in the present work for commercial vinegars of different producers and compared with those described at the literature (Table IV).…”

“…The samples of apple vinegar V2 and V9, although of different manufacturers, presented similar mineral composition. Although those samples have shown the largest concentrations of the investigated analytes, they were smaller in relation to most of the samples described in the literature, as shown in Table IV ( Gonzalez and Chozas 1988;Artiles et al 1993;Corradini et al 1994;Guerrero et al 1997). On the other hand, sample V8 (vinegar of rice) showed an intermediate mineral concentration, but the Zn values (1.23 mg l À1 ) were greater than those observed for all investigated samples.…”

“…On the other hand, sample V8 (vinegar of rice) showed an intermediate mineral concentration, but the Zn values (1.23 mg l À1 ) were greater than those observed for all investigated samples. Independently of this result, the concentrations of Al, Ba, Cu, and Zn were low; this is important considering the influence of these elements in the development of undesirable processes, such as precipitation (Gonzalez and Chozas 1988;Guerrero et al 1996).…”

“…Undesirable matrix effects are avoided using either a previous decomposition step (Artiles et al 1993;Corradini et al 1994;Rizzon and Miele 1998) or the standard additions method (Gonzalez and Chozas 1988;Guerrero et al 1997). However, the former procedure may increase the possibility of contamination and volatilization losses of the analytes, and both decrease the analytical frequency.…”

“…wine, honey, etc.) following the process of the acetic fermentation of alcoholic substrates (Gonzalez and Chozas 1988;Guerrero et al 1994Guerrero et al , 1997Baccan et al 1998;FAO 2006). Wine vinegars can be made either by a slow, traditional process (surface culture), or by a quick acetification process (submerged culture) (Artiles et al 1993;Corradini et al 1994;Guerrero et al 1994, (Guerrero et al 1997).…”