Current rice research projects

by Emily Wilson
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Drying and tempering

• Determine the impact of airflow velocity on the drying rate constant.

• Correlate fissure occurrence to head rice yield for various drying treatments.

• Incorporate the glass transition temperature concept in rice drying to optimize drying strategies.

• Characterize individual kernel size distributions at harvest and during drying.

• Use video microscopy to characterize fissure formation in rice kernels during drying.

• Determine the thermal conductivity of rough rice above and below the glass transition

• Determine minimum tempering durations between drying passes.

• Study the shrinkage behavior of a single rice kernel using thermomechanical analysis.

• Predict the intra-kernel temperature and moisture distribution through finite element modeling of rice drying.

• Study the fracture mechanism of rice kernels from a polymer science perspective.

• Study the glass transition and other transitions of a single rice kernel by dynamic mechanical analysis.

• Show how variety, geographic location, maturity and chalkiness affects the glass transition of rice kernels.

• Relate shrinkage to stress distribution inside kernels and predict single kernel fissuring potential and milling quality.

• Analyze the milling quality of rice as affected by individual kernel property distributions at harvest.

• Predict internal stress distributions duringdrying using finite element analysis.

• Characterize individual rice kernel moisture content distributions at harvest and in relation to milling quality.


• Quantify the effects of controlled ambient aeration during rice storage to prevent insect damage and maintain quality.

• Kinetics and quantification of rice yellowing.

Milling/bran utilization

• Evaluate various laboratory mills for use in milling small samples of rice.

• Develop an extraction method for rice bran oil using supercritical carbon dioxide.

Sensory analysis/quality assessment

• Predict sensory texture of short, medium and long-grain rice using spectral stress strain analysis.

• Correlate instrumental measurements to sensory evaluation of cooked long-grain rice texture.

• Develop near-infrared calibrations for rapid measurement of rice sensory attributes.

• Determine the sensory attributes (appearance, flavor and texture) most important to U.S. Asian consumers.

• Predict sensory texture attributes of jasmine rice by instrumental analysis using a texture analyzer.

• Study rice texture and functionality as affected by starch and protein chemistry during storage.

Cereal chemistry/value-added processing

• Investigate the influence of rice source, additives and processing variables on rheological, sensory and chemical properties of rice milk.

• Evaluate the structure and properties of rice varieties of different milling and grain qualities.

• Characterize the effect of processing and storage conditions on physical and chemical properties of rice starch.

• Investigate the single-stage production of high glucose syrup using immobilized enzymes.

• Show the effects of growing location and harvesting time on physical and chemical properties of rice flours and starches.

• Determine the properties of starch from defective rice.

• Determine the effect of drying and tempering treatments on moisture absorption kinetics
and structural and chemical changes of rice.