Aplicação da cromatografia por exclusão e da cromatografia gasosa de alta resolução na análise do café Application of exclusion chromatography and high resolution gas chromatography to coffee analysis

Abstract

The combination of high performance exclusion chromatography (HPEC) and gas chromatography (GC) was applied to the analysis of six coffee samples that were previously characterized by sensory tests as of good or poor quality. The data obtained by the two techniques were statistically evaluated by "Principal Components Analysis" (PCA) using selected peak areas. The results showed the potential of the described techniques for coffee analysis. The HPEC technique monitored with the U.V. detector at 272 nm and followed by PCA may be correlated with sensorial data, particularly if a wider group of samples is used.

Keywords

• coffee quality
• high performance exclusion chromatography
• principal components analysis