... out the importance of careful chemical analysis of these compounds, sincethey occur in many derivative forms (Sun et al., 2002). Their report describes, asan example, the underestimation of ... clinical testing. Many scientific methods of analysis have been developed for the investigation of the constituents and bio-logical activities of these constituents of plants. Various chromatographic, ... http://www.ars-grin.gov/duke/.Although medicinal plants have been known for thousands of years and havebeen used for a variety of medicinal purposes, understanding of the activity andM. McKenzie (B)Denali BioTechnologies,...