Presence Of Benzoic And Sorbic Acids In Brazilian Wines And Ciders [presença Dos ácidos Benzóico E Sórbico Em Vinhos E Sidras Produzidos No Brasil]

摘要

This study determined benzoic and sorbic acid contents in Brazilian wines and ciders in order to verify whether these preservatives are used in accordance with Brazilian regulations. Forty-nine samples of commercially available wines (35 red wines, 11 white wines and 3 ciders) were analyzed by HPLC coupled to a photodiode array detector. Although the use of benzoic acid in wines and ciders is not permitted, this preservative was detected in three samples, one wine and two ciders, which contained benzoic acid levels of 295.6, 424.7 and 608.4 mg.L-1, respectively. Sorbic acid was detected in 49% of the analyzed samples, with levels ranging from 91.0 to 309.5 mg.L-1. Considering only the samples containing sorbic acid, the mean content detected was 171.2 mg.L-1. Six red wine samples presented sorbic acid content above the maximum level allowed by Brazilian regulations. The results showed that, in some cases, the content of benzoic and sorbic acids in wines and ciders, as well as their labels, do not meet current national regulations.