## 3 Results and Discussion
### Polyphenolic Compounds  
The results presented in Figure 5 enable the visualization of the variations in the total polyphenol content of fruit samples from the areas studied. The total polyphenol content was the highest for AbHa22 and AbM22, approaching 2200 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM. The AbHb22 fruits showed an intermediate content (1576 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM), while Ab21 fruits had a significantly lower content, around 900 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM. The highest values obtained corresponded to those reported by [PERSON] et al. [29] for fruits of the same genus, _A. laurina_ (2305 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM). In contrast, the content obtained by [PERSON] et al. [13] in the loengo fruit was 66 times lower (26 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM). As with other compounds, numerous factors can influence the polyphenol content of fruits [43]. For comparison with other fruits, our highest contents were of the same order of magnitude as the contents reported by [PERSON] et al. [44] in strawberry cultivars (_Fragaria ananassa_ Duch. ), containing between 2000 and 2800 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM. According to research conducted by [PERSON] et al. [45], the total polyphenol content in mango pulp ranged from 292 et 669 mg eq.GA\(\cdot\)100 g\({}^{-1}\) of DM, which was lower than our results. [PERSON] et al. [46] reviewed various studies on 40 banana cultivars, and found contents ranging from 3 to 990 mg eq. GA\(\cdot\)100 g\({}^{-1}\) of DM. The spectrometric analysis of polyphenols, a colorimetric method, can overestimate total values due to interactions with other compounds. In contrast, HPLC may fail to detect certain compounds, since only wavelengths of 360 and 510 nm were taken into account, excluding compounds that absorb at 280 nm. Figure 5: Total polyphenol content (TPC) of the samples of loengo fruit (mean with \(n=3\)). Different letters for significant difference, according to the Tukey test (\(p<0.05\)). The HPLC analyses carried out allowed for the detection of ten flavonoids, of which eight were identified based on their UV-visible absorption spectrum (HPLC-DAD) and the data obtained via HPLC-MS (Table 2 and Figure S2). Qualitatively, all the fruit samples were similar. Two classes of flavonoids were identified--anthocyanins and flavonoids--mainly in the form of glycosides. Concerning anthocyanins, only one molecule was detected and identified. Co-injection conducted with an HPLC standard (Extrasynthese, Genay, France) confirmed that it was indeed cyanidin 3-O-glucose (C3G). The peaks 1 and 9, which exhibited absorption maxima at 344 and 356 nm, respectively, were not detected via mass spectrometry, and therefore could not be identified. Based on their UV spectrum and fragmentation behavior, two compounds (peaks 3 and 4) were identified as myricetin O-glycos, and peaks 5, 6, 7, and 8 were identified as quercetin O-glycos. Figure 6 showed that for three out of four samples, the anthocyanin contents were similar--between 45 and 52 mg eq. cyanidin:100 g\({}^{-1}\) of DM. However, the AbHa22 fruits were approximately 1.5 times richer in anthocyanins. These contents were lower than those obtained by [PERSON] et al. [47] in strawberry (_Fragaria ananassa_ Duch.) (219 mg eq. C3G:100 g\({}^{-1}\) of DM) and higher than those reported by [PERSON] et al. [29] in _A. laurina_ fruit (5 mg:100 g\({}^{-1}\) of DM). Our results were also higher than those obtained by [PERSON] et al. [48] for strawberry fruits (_Arbutus unedo_ L.), whose contents ranged between 0.15 and 0.64 mg eq. C3G:100 g\({}^{-1}\) of DM. The sample richest in flavonoids was Ab21, with 30 mg eq. quercetin:100 g\({}^{-1}\) of DM. The fruits with the lowest contents were AbHb22 and AbM22, with contents of around 14 mg eq. quercetin:100 g\({}^{-1}\) of DM. In comparison with 17 plum cultivars reported by [PERSON] et al. [49], with contents ranging from 16.04 to 77.6 mg:100 g\({}^{-1}\) of DM, our results were in a similar range. Higher values were found by [PERSON] et al.