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In an ultra-high-shear inline mixer, the high-shear mixing takes place in a single or multiple passes through a rotor–stator array. The mixer is designed to subject the product to higher shear and a larger number of shearing events than a standard inline rotor–stator mixer, producing an exceptionally narrow particle-size distribution.
The high-shear mixing generates high temperatures in the dough, which is cooled in some advanced mixers using a cooling jacket. Chilled water or ice may also be used to counteract the temperature rise during high-speed mixing. Air pressure in the mixer headspace can be controlled to keep gas bubbles at the desired size and number.
The various types of food products manufactured by extrusion typically have a high starch content. [1] Directly expanded types include breakfast cereals and corn curls, and are made in high-temperature, low-moisture conditions under high shear. Unexpanded products include pasta, which is produced at intermediate moisture (about 40%) and low ...
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In baking, a farinograph measures specific properties of flour. It was first developed and launched in 1928. [1] The farinograph is a tool used for measuring the shear and viscosity of a mixture of flour and water. The primary units of the farinograph are Brabender Units, an arbitrary unit of measuring the viscosity of a fluid. [2]
Mixing of liquids occurs frequently in process engineering. The nature of liquids to blend determines the equipment used. Single-phase blending tends to involve low-shear, high-flow mixers to cause liquid engulfment, while multi-phase mixing generally requires the use of high-shear, low-flow mixers to create droplets of one liquid in laminar, turbulent or transitional flow regimes, depending ...
Baking: The proofed dough is loaded into a hot oven for baking. During the first few minutes, the remaining rise will occur in the dough and is known as oven spring . Starch gelatinization begins at 105 °F (41 °C), [ 34 ] the yeast dies at 140 °F (60 °C), [ 35 ] and the baking is finished when the product reaches an internal temperature of ...
A three roll mill or triple roll mill [1] is a machine that uses shear force created by three horizontally positioned rolls rotating in opposite directions and different speeds relative to each other, in order to mix, refine, disperse, or homogenize viscous materials fed into it.