SHERMAN H. CHAN (1)
(1) ThermoFisher Scientific, Clinical Diagnostics Division
A new on-site test for deoxynivalenol (DON) was developed using a
novel homogeneous enzyme immunoassay (HEIA) method. The test mechanism
is described in detail and data is presented comparing the test’s
performance with commercial ELISA kits using grain samples (barley,
malted barley, and wheat) naturally contaminated with DON at levels
determined by HPLC and GC-MS analysis. The accuracy and precision of the
DON HEIA test was found to be consistently equivalent to the
corresponding ELISA systems. These results indicate that the new HEIA
test can be effectively used for on-site DON testing and offers
additional advantages of speed and simplicity.
Sherman Chan received his bachelor’s degree from the National Taiwan
University and master’s degree in cereal science and technology from
North Dakota State University, Fargo. Sherman was employed at the
Fleischmann Malting Company as quality control lab manager and then at
the Pabst Brewing Company as a principal research chemist. Sherman
joined Rahr Malting Company in 1980 as the technical director in charge
of research and quality control until his retirement in 2006. He has
been short course instructor for ASBC and MBAA and has worked as a
malting consultant and short course instructor for the U.S. Grains
Council to promote U.S. barley in Asia and South America. He has been a
member of ASBC, MBAA, the AMBA Technical Committee, and IoB. He has
served ASBC on the local and national levels. In addition to serving on
technical subcommittees and the Technical Committee, he has served as
president-elect, president, and past president of ASBC. During the past
few years, he has worked as a technical consultant for the ThermoFisher
Scientific Clinical Diagnostics Division.
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