The applications of analytical tools in evaluation of quality and safety of dietary supplements, microbial transformation, fingerprinting and standardization of marker compounds in medicinal plant products, Optimization of large scale extraction and isolation of natural products of commercial value.

This includes the search of active components from plants used in folk medicine to understand validity of centuries old use of Herbal Medicine which possess antimicrobial, antitumor, anti-inflammatory or immune modulators properties.

The development of analytical methods for the quantitation of marker/standard compounds in dietary supplements by HPLC, GC, and LC/MS, and NMR. These methods will help in determining the validity of claims on dietary supplements.

Dr. Khan's group is also actively collaborating with other researchers in areas like genetic fingerprinting, cultivation, environmental contamination of plants used as dietary supplements as well as microbial transformation.