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Professional Experiences
:
10/13-present, Senior Scientific Liaison, USP, Rockville, MD
Review USP botanical monograph submissions and propose botanical monographs for both
dietary supplements and herbal medicines.
10/06-10/13, Reference Standard Scientist, USP, Rockville, MD
Effectively managed reference standard portfolio. In my portfolio mainly includes
botanical reference standards.
02/02-09/06, Postdoctoral Research Associate, University of Illinois at Chicago, Chicago, IL
Participated drug discovery projects funded by NIH.
Performed bioassay directed isolation and structural elucidation of bioactive compounds from
tropical plants.
Conducted in vitro anti-cancer, anti-malarial bioassay.
09/01-01/02, Research Associate, Lehman College, The City University of New York, New
York, NY
Developed and validated HPLC methods for the quantitation of catechin and epicatechin in
Theobroma gradiflorum
extracts.
Conducted bioactivity guided isolation and structural elucidation of antioxidants from
tropical fruit of
Theobroma
gradiflorum
and
Manilkara zapota
.
10/00-09/01, Associate Professor, National Institute for the Control of Pharmaceutical and
Biological Products, Beijing, China
Performed extensive quality control analysis of herbal medicines by HPLC and TLC.
Developed HPLC quality control method by quantifying multi-flavonoids in
S. baicalensis
.
Standardized botanical reference standards by identifying the structures of the compounds
based on NMR, MS, IR and UV spectral data and determining the purity of the compounds
using HPLC and TLC techniques.
Involved in HPLC fingerprint method development for
Panax ginseng
.
02/97-09/00, Research Assistant, Hong Kong University of Science and Technology, HK
Performed bioassay guided isolation and structure determination of pure chemical
compounds from
Hyoscyamus. niger, Euptelea
pleiospermum
and
Rorippa montana
.
Developed and validated HPLC and CE methods for the quantitative analysis of scopolamine
and atropine in
Hyoscyamus niger
seeds.
07/95-12/96, Research Assistant, Hong Kong University of Science and Technology, HK
Developed and validated HPLC methods for the quantitative analysis of lignans in
Schisandra chinensis
.
Performed bioassay guided fractionation, isolation and structure determination of pure
chemical compounds from
Schisandra chinensis
and
Polygonum multiflorum
.
09/89-07/95, Assistant Professor, National Institute for the Control of Pharmaceutical and
Biological Products, Beijing, China
Performed extensive quality control analysis of herbal medicines using HPLC and TLC.
Developed and validated quality control methods for four different finished Chinese herbal
medicines using HPLC and TLC-densitometry by quantifying and identifying the active
compounds in the drugs.
Standardized botanical reference standards by identifying the structures of the compounds
based on NMR, MS, IR and UV spectral data and determining the purity of the compounds
using HPLC and TLC techniques.
07/87-03/89, Research Assistant, Institute of Materia Medica Chinese Academy of Medical
Sciences, Beijing, China
Performed isolation and structural characterization of flavonoids isolated from
Veronica
linariifolia
.
AOAC OMB Meeting Book
208