3.6. Polyphenolic compounds concentrations in sunflower leaves
Dry matter and organic content determination in sunflower leaves do not show important differences (Table 4). However, in the case of total polyhenols content determined in leaves, important differences were observed between samples. Thus, for plants cultivated under different conditions and treated with extract SB1, TPC increased (81 mg EAG/dm3 extract) compared with control (49 mg EAG/dm3 extract). The same situation was observed for the plants treated with a mixture of DDW + SB, where TPC concentration of polyphenols was 75 mg EAG/dm3 extract.