Analysis of caffeine and chlorogenic acids content regarding the preparation method of coffee beverage

摘要

This research was focused on the evaluation of selected parameters of coffee quality, regarding the beverage preparation method, using high-performance liquid chromatography. Samples of Coffea arabica from South America were analyzed. For the preparation of the final beverage were used filtration and moka methods. All samples roasted at medium dark roasting level Full City ++, contained less than 5% of moisture. The values of pH and dry matter content did not show a significant difference. The lowest content of chlorogenic acid reached value (1.41 g.100 g(-1)) prepared from filtration and 1.49 g.100 g(-1) prepared from moka method. The highest content of chlorogenic acid ranged from 2.94 g.100 g(-1) filtration method and 3.36 g.100 g(-1) moka. Similarly, caffeine content, showed lower values using the filtration method. Values ranged from 1.37 to 1.57% (filtration) and from 1.54 to 1.78% (moka). However, PCA didn't show a significant difference.