All methods have been applied for the analysis of three
different pilsner-type beer samples. Each analysis has been
repeated three times. The concentrations as average of the triplets
of the analyzed compounds are shown in Table 2. The internal
standardmethod has been chosen for compound quantitation.As
internal standards, heptanoic acid for the determination of
medium-chain fatty acids (caproic-lauric acids) and pentanedecanoic
acid for the determination of long-chain fatty acids
(myristic-linolenic acids) were used. Three compounds were
present in concentrations>1mg/L (caproic, caprylic, and capric
acids), and four compounds were present in low concentration,