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 Glutograph-E |
NEW MODEL: Glutograph-E
Test the quality of wet and dry gluten - precisely, reliably, and reproducibly
Apart from dough-rheological measurements of the flour quality, e.g. with the Farinograph®-E or Extensograph®-E, separate quality control of wet and dry gluten as being used as a flour additive gains more and more importance.
The Brabender® Glutograph for testing the gluten quality has been completely revised and now appears as Glutograph-E with a completely new, compact design and improved technical features:
• state-of-the-art electronic measuring system
• easy and comfortable operation via touch-screen
• integrated computer with user-optimized measuring and evaluation software
• printer output
The Glutograph-E represents the state of the art on the sector of gluten testing and enables
• reliable, objective, and reproducible measurement of the stretching and elastic properties of washed wet gluten and of dry gluten mixed with water to a dough
• testing of sample weights usually occurring in practice when gluten is washed out
• testing flour quality with regard to its suitability for noodle production
• recognition of drying and heat damage of flour and dry gluten
Measuring principle
The measuring system of the Glutograph-E consists of two parallel, round, corrugated plates mounted at a defined distance opposite each other. The sample is put in-between these two plates. The fixed distance and diameter of the two plates provide for a defined sample volume and a reproducible sample geometry.
While the upper plate stands still, the lower one is turned with a constant force - independent of shear angle and sample. Depending on your gluten quality, this constant force (shear stress) stretches the sample more or less, i.e. the lower plate is deflected more or less quickly against the upper one. This deflection (shear angle) is recorded as a function of time.
After having reached a certain deflection, the sample is released and recovers according to its elasticity.
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 Glutograph Diagrams | |  | |
The diagram
The resulting diagram first shows the stretching process (rising curve). The falling curve in the second part represents the recovery of the sample.
The shearing time (time up to reaching a certain preset deflection) is a measure of the stretching properties of the sample. The recovery of the sample after a certain time mirrors the elasticity.
