The document discusses the maceration and percolation processes in the context of pharmacognosy and phytochemistry. It details the procedures involving liquid extraction of powdered drugs using solvents and the application of gentle heat. The methods described aim to obtain concentrated alcoholic extracts after a period of preparation.

1. Sanjivani College of Pharmaceutical Education and
Research, Kopargaon
Pharmacognosy & phytochemistry-II
Dr. Sutar N. G
Associate Professor

2. Maceration
extract
Filter
liquid
Drug powder
Drug powder
and solvent
residue
Stir kept 7 days by
gentle application
of heat.
Not to boil
residue

3. Percolation
Percolator
Moist powder
drug by solvent
imbibition
Kept for 7 days
maceration percolation
Conc. Alc. extract