Research Areas:
Plant Biochemistry, Protein Isolation and Characterisation,
Enzymology and Biosensors for Agricultural Applications.
Research Interests:
To understand the biology (including physiology,
biochemistry and molecular biology) of cassava (Manihot
esculenta Crantz ) and application of this body of knowledge
towards systematics and promotion of food security in cassava
consumption.
Current Projects:
Research targeting safety in cassava consumption
is aimed at helping countries where cassava is a staple.
This project looks into developing of sensors for cyanogen
determination, evaluating and understanding cyanogen variation
in cassava and its products, zero-cyanogen cassava based
food. Cyanogenesis in cassava is another area of interest
to us. Plant tissue culture techniques coupled with those
involving mutation and molecular biology are being used
to create mutant lines to understand cyanogenesis, with
an aim to lower its cyanogen content. This project is in
collaboration with departmental colleague, Associate Professor
Loh Chiang Shiong.
Selected Publications:
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Yeoh, H.H. & Sun, F. Assessing cyanogenic potential
in cassava-based food using the enzyme dipstick method.
Food and Chemical Toxicology 2001. 39:649-653.
-
Tatsuma, T., Komori, K., Yeoh, H.H. & Oyama, N.
Disposable test plates with tyrosinase and b-glucosidases
for cyanide and cyanogenic glucosides. Analytica
Chimica Acta (2000) 408:233-240.
-
Joseph, T., Yeoh, H.H. & Loh, C.S. Somatic embryogenesis,
plant regeneration and cyanogenesis in Manihot glaziovii
Muell. Arg.(ceara rubber). Plant Cell Reports
(2000) 19:535-538.
-
Wong, H.L., Yeoh, H.H. & Lim, S.H. Customization
of AFLP analysis for cassava variatal identification.
Phytochemistry (1999) 50:919-924.
-
Yeoh, H.H., Tatsuma, T. & Oyama, N. Monitoring
cyanogenic potential of cassava: the trend towards biosensor
development. Trends in Analytical Chemistry (1998)
17:234-240.
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