Texture Analysis in Action: the Rice Extrusion Rig

The RICE EXTRUSION RIG (HDP/RE) allows the determination of rice kernel resistance to extrusion after cooking according to ISO 11747.  

The standard is the outcome of inter-laboratory testing and was prepared by the ISO/TC34 Technical Committee for Cereals and Pulses.  

The sample is tested after cooking (parboiled or not parboiled) under specified conditions. A small sample is placed in the testing cell of the rig. 

Comparison of the resistance to extrusion
of wholegrain, thai-style and white long-
grain rice using the Rice Extrusion Rig

The rice is pushed down by a plunger of similar cross-section to the cell therefore forcing the rice to be compressed before extruding through the holes in the base extrusion plate on which the sample is located.  

Resistance to extrusion is measured as the ease of pushing cooked rice through this perforated plate using compression and shear.  

The mean force required to extrude the sample over the plateau region of its curve is divided by the testing area of the extrusion plate and is recorded in kg/cm2.

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We can design and manufacture probes or fixtures for the TA.XTplus texture analyser that are bespoke to your sample and its specific measurement.

Once your measurement is performed, our expertise in its graphical interpretation is unparalleled. Not only can we develop the most suitable and accurate method for the testing of your sample, but we can also prepare analysis procedures that obtain the desired parameters from your curve and drop them into a spreadsheet or report designed around your requirements.

For more information on how to measure texture, please visit the Texture Analysis Properties section on our website.

The TA.XTplus texture analyser is part of a family of texture analysis instruments and equipment from Stable Micro Systems. An extensive portfolio of specialist attachments is available to measure and analyse the textural properties of a huge range of food products. Our technical experts can also custom design instrument fixtures according to individual specifications.

No-one understands texture analysis like we do!

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