General screening bioassays are simple complex( simple, complex ), inexpensive expensive( inexpensive, expensive ) and used for rapid screening specific enzyme screening( rapid screening, specific enzyme screening ) of extracts

specialised screening bioassays are subcellular multicellular( subcellular, multicellular ) assays directed at specific broad spectrum( specific, broad spectrum ) enzymes or receptors. Compounds working by mechanisms unrelated to the assay are likely to be missed.

What are the stages of natural product processing? Specimen Taxonomy molecules structure( Specimen, Taxonomy, molecules, structure ) collection, establishing taxonomy specimen molecules therapeutics( taxonomy, specimen, molecules, therapeutics ), extracting possible active molecules, using screening showing therapeutic herbariums( screening, showing, therapeutic, herbariums ) techniques to evaluate therapeutic activity, identifying and isolating burning melting releasing( isolating, burning, melting, releasing ) the structure responsible for the activity, using organic synthesis

a range of techniques are used to isolate active compounds (fractionation). these include TLC LTC MSMS( TLC, LTC, MSMS ), column chromatography, HPLC ELISA SPE( HPLC, ELISA, SPE ) and combinations such as HPLC/MS