3.1.3. Organic Acids

A total of 3.93 ± 0.01 g/100 g fw of organic acids was quantified (Table 1), with citric acid as the most abundant one (2.76 ± 0.01 g/100 g fw), followed by malic and quinic acids in lower amounts (0.77 ± 0.01 and 0.37 ± 0.01 g/100 g fw, respectively), and also oxalic and ascorbic acids (0.041 ± 0.002 and 0.0248 ± 0.0003 g/100 g fw, respectively). Comparing these results with the ones reported by other authors for this cultivar, some variations can be observed, for instance Wojdyło et al. detected 0.154 ± 0.005 g/100 g fw of citric acid, followed by malic, oxalic, quinic, and ascorbic acids (0.039 ± 0.002, 0.0115 ± 0.0003, 0.0098 ± 0.0007, and 0.0017 ± 0.0002 g/100 g fw, respectively), which concentrations were significantly lower than the ones found in the present study [21]. These authors also detected phytic and shikimic acids in concentrations of 0.047 ± 0.005 and 0.0039 ± 0.0002 g/100 g fw, which were not detected in this work.
