Ultrasound-assisted extraction (UAE) of phenolic compounds from differentBrosimum alicastrumtissues

Abstract

The leaves and fruit ofBrosimum alicastrum, a neotropicaltree, contain many phenolic compounds, although it is still unclear whichextraction techniques and protocols are most efficient. We analyzed theeffect of solvent-to-tissue ratio (STR) and lyophilized tissue type (LT) inultrasound-assisted extraction (UAE) ofB. alicastrumleaf and seed elementson total phenolic compounds content (TPC) and extraction yield (EY).Phenolic compounds from lyophilized fruit peel, seed skin, seed and leafwere extracted with ethanol-distilled water (1:1, v/v) in an ultrasonic bath atthree STRs (20, 40 and 60 mL g−1) for 30 min, at 30°C and 100% amplitude.The two factors (LT and STR) and their interaction affected UAE results. Thehighest STR value (60 mL g−1) produced the highest TPC, while seed tissuehad the highest TPC and fruit peel tissue the highest EY. Ultrasound-assistedextraction effectively extracts phenolic compounds fromB. alicastrumusingthe evaluated conditions.