engleski

Determination of ash content in Croatian wines by empirical equation

Ash content is an obligatory indicator for certified wines to be placed on market. The official method for determination of ash content is simple but time-consuming. The possibility of fast determination of ash content from given conductivity, alcohol and total dry extract was examined on 252 samples of Croatian white and red wines. Based on experimental data the empirical equation for ash content calculation is proposed. The values calculated by this equation were compared to experimentally determined values obtained by official gravimetric method. When differences in ash content between the experimental and calculated values were up to 10 %, calculated ash content by proposed equation is found to be satisfactory for 83 % of samples, while for literature equation it was only 60 %. Based on the results of this study, proposed equation can be applied for ash content evaluation in Croatian wines.

ash content; conductometry; gravimetry

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