Pressurized liquid extraction of medicinal plants

The suitability of pressurized liquid extraction (PLE) in medicinal plant a nalysis was investigated. PLE extracts from a selection of representative h erbs were compared with extracts obtained according to Pharmacopoeia monogr aphs with respect to yield of relevant plant constituents, extraction time and solvent consumption. In all cases a significant economy in time and sol vents was realized, while extraction yields of the analytes were equivalent or higher. (C) 1999 Elsevier Science BN. All rights reserved.