## 3 Results and Discussion
### Mineral Content  
All fractions of buritiraana have nutritional potential in micro- and macrominerals (Table 2), but there were differences among the fractions (\(p\) < 0.05). The highest mineral contents in mg\(\cdot\)100 g\({}^{-1}\) were: Fe (3.58 \(\pm\) 0.33, PE), Zn (2.23 \(\pm\) 0.07, WS), Ca and Mn (65.189 \(\pm\) 0.71 and 3.54 \(\pm\) 0.08, PU) and Mg, K and Cu (112.96 \(\pm\) 0.87, 800.01 \(\pm\) 8.91 and 0.79 \(\pm\) 0.00, SE). On the other hand, the lowest contents were: Fe, Zn and Mn (2.70 \(\pm\) 0.13, 1.94 \(\pm\) 0.03 and 2.15 \(\pm\) 0.07, SE), Ca, Mg and K (34.46 \(\pm\) 1.20, 43.96 \(\pm\) 1.03 and 528.12 \(\pm\) 23.36, PE) and Cu (0.43 \(\pm\) 0.04, PU). Fruit from the same family, buriti (_Mauritiaflexuosa_), acai (_Euterpeoleraceae_) and macaiba (_Acrocomia aculeata_), were also studied regarding mineral content [4] by convention; the highest mineral content (mg\(\cdot\)100 g\({}^{-1}\)) found here will be compared with those of these fruits. The content of Fe in buritiraana was higher than that of buriti, but lower than that of macaiba and acai; the Zn content was lower than that of macaiba and higher than that of buriti and acai; the Mg content was lower than that of the three other fruits; the K content was lower than that of acai but higher than that of buriti and macaiba; the Cu content was higher than that of buriti and macaiba (acai, not reported); the Ca content was lower than that of the three fruits; and the Mn content was lower than that of açai but higher than that of buriti and macaiba. Minerals are essential elements for good maintenance of the body, and according to [42], the consumption of 100 g of edible buritiraa fractions (WS and PU) provides the recommended daily intake (RDA) of Ca for all lifestyle groups; Cu represents 50% of the RDA for infants, children, males and females >70 years); Fe provides about 26.4% of the RDA for children 0-8 years; Mg provides more than 50% of the recommendation for infants and children aged 7 months-3 years); Mn also supplies the RDA of all groups; and finally, Zn provides about 74% of the RDA for children aged 1-3 years) [42]. All fractions of the buritiraa studied are sources rich of minerals for people of different lifestyles, sex and age, as they present more than the minimum of 15% of the recommended dietary intake per 100 g of sample [43]. PE and SE fractions, which are not edible, can be used as sources of minerals to enrich food. Figure 2 shows a clear and concise interpretation of the possible relationships among the responses of proximate composition, carbohydrate profile, physicochemical characteristics, bioactive compounds, including antioxidant properties and vitamin C content, and the fractions. The first two main components explain 71.5% and 26.7% of the data variability, totaling 98.2%. This value was higher than that recommended by [PERSON] and [PERSON] [44], who reported that the first selected main components must correspond to a minimum of 75% of the variability among the samples. The SE fraction (Figure 2a) had greater values for Mo, Ash, TF, IF, Fru, Suc, Mal, K, Mg, Cu, GF2, GF3, pH, ChA and PA (Figure 2b) as they are in the same geometric space as the SE. Among the nine phenolic compounds investigated, six were present in the seed, and among these, two were below the LOQ (Table 3). Thus, since the phenolic compounds are directly related to the antioxidant capacity, it can be observed (Table 4) that in all the assays, SE presented lower antioxidant potential compared to the other fractions. On the other hand, oligosaccharides such as GF2 and GF3 were identified in a greater proportion in the buritirana seed and can contribute to the formulation of products with functional claim. Since these compounds have prebiotic action, they can regulate the gut microbiota and help to prevent and fight against diseases [45; 46].