## 3 Results  
### Chromatographic Analysis  
Phenolic compounds extracted from natural sources have been a target of intensive studies since they offer notable antioxidant, anti-inflammatory, antimicrobial, antidiabetic, and anticancer effects, as well as neurological and cardiovascular protection. The determination of the phenolic profiles of such natural products is necessary and, as expected, considerable differences were found regarding phenolics present in blueberries and sweet cherries, as described in Tables 1 and 2. Focusing on anthocyanins from blueberries, eight anthocyanins were found, and the presence of petunidin 3-O-galactosidase (C\({}_{22}\)H\({}_{23}\)O\({}_{12}\)) and malvidin 3-O-arabinoside (C\({}_{22}\)H\({}_{23}\)ClO\({}_{11}\)) stood out in both total extract and coloured fraction of cv. Legacy. Additionally, higher levels of malvidin 3-O-galactosidase (C\({}_{22}\)H\({}_{25}\)O\({}_{12}\)Cl) were detected in its coloured fraction. Regarding cv. Duke, petunidin 3-O-arabinoside was the main compound found in both total extract and coloured fraction. Its total extract also showed higher levels of malvidin 3-O-arabinoside, while the coloured fraction was richer in malvidin 3-O-galactosidase. The presence of these anthocyanins in blueberry fruits is in accordance with the literature [46; 47; 48]. On the other hand, four anthocyanins were detected in Sweetheart sweet cherry. As expected considering other published works [17; 35], Sweetheart is poor in anthocyanin compounds. However, it was possible to quantify the presence of delphinidin 3-O-rutinoside (C\({}_{27}\)H\({}_{31}\)ClO\({}_{16}\)) in its total extract. Saco cv possesses higher amounts of anthocyanins, with cyanidin 3-O-rutinoside (C\({}_{27}\)H\({}_{31}\)O\({}_{15}\)) being one of the most predominant anthocyanins found [5]. Concerning non-coloured phenolic compounds, quercetin aglycone (C\({}_{15}\)H\({}_{10}\)O\({}_{7}\)) was the main one detected in both blueberry cultivars. The presence of the detected compounds has been reported in other works [49; 50; 51]. On the other hand, in Sweetheart sweet cherry, the main compound found was 5-O-caffeoylquinic acid, also known as _cis_ chlorogenic acid (C\({}_{16}\)H\({}_{18}\)O\({}_{9}\)), while Saco extracts showed higher levels of 3-O-caffeoylquinic acid (_trans_ chlorogenic acid; C\({}_{16}\)H\({}_{18}\)O\({}_{9}\)) [5]. The richness of chlorogenic acids in sweet cherries is in agreement with other research [17; 33; 52]. Compared with other fruits, higher levels of quercetin were found in blueberry extracts than in tart cherries (292.6 ug/g of dried weight (dw)) [53]. Furthermore, blueberries are richer in anthocyanins than methanolic elderberry extracts (6500 ug/g of dw) [54]. Peaches showed lower levels of phenolic compounds than both blueberry and cherry extracts [55]. These differences were expected since phenolic levels depend on genotype, time of harvest and maturity stage, origin, climate, and agricultural and processing methods [17; 18; 52]. \begin{table}
\begin{tabular}{l c c c c c c c c c} \hline \multicolumn{1}{c}{**Blueberry Fruits**} & \multicolumn{6}{c}{**Sweet Chey Fruits**} \\ \hline  & \multicolumn{2}{c}{**cv Legacy**} & \multicolumn{2}{c}{**cv Duke**} & \multicolumn{2}{c}{**cv Sweetment**} & \multicolumn{2}{c}{**cv.