Damage and drying modify the composition of Mikania glomerata and Mikania laevigata leaves

Numerical optimization of guaco leaves extraction based on pre‐heat treatment

“…In terms of coumarin concentration, obtained after hydroalcoholic extraction of guaco leaves, it was reported that lyophilization results in a higher coumarin content, 17.7 mg/g, than that obtained after pre-treatment with spray dryer, 8.0 mg/g (E Silva et al, 2012). Furthermore, the coumarin contents obtained after drying in an oven at 40 °C are higher than those obtained from leaves dried in the shade (Borghi et al, 2019). For pre-drying at 50 and 60 °C, the temperature harmed the concentration of coumarin in the extract (Silva et al, 2018).…”