engleski

Comparison of reference and rapid methods used in wine analysis

Reference methods assigned by the European Communities for determination of wine quality parameters are work and time consuming. Because of that and economic reason, numbers of European laboratories rather use rapid methods whose accuracy is not equal to the reference methods but rather is lower. Consequence of different methods usage in different laboratories is often difference of results. Authorized laboratories for wine quality control are usually obligated to use reference methods while laboratories for production process control can use rapid methods with recommendation to evaluate their results by participation in interlaboratory comparisons. The goal of this work was to compare reference and rapid methods on Croatian wines analysis. Investigation was carried out on 40 Croatian wines originated from different parts of the Republic of Croatia, differing in color (20 white, 20 red) and content of reducing sugars (dry, semi-dry, semi-sweet, sweet). The following parameters were determined: relative density, alcoholic strength, total dry extract, reducing sugars, total acidity, ash, free and total SO2. The obtained results showed significant positive correlation for all investigated parameters for both reference and rapid methods.

reference and rapid methods; wine analysis

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