In which instrument dough is inflated in the form of balloon to evaluate quality?

The Alveograph is an apparatus for measuring the properties of wheat flours based on the observation of the deformation of a dough bubble.

What is measured in Alveograph?

The alveograph, like the extensograph, is used to measure the stretching properties of a flour–water–salt dough.

How is gluten stretch measured?

The alveograph test measures the resistance of a bubble of dough to expansion. The wet gluten test measures the amount of gluten protein in flour. The starch properties of flour are measured by the amylograph and the rapid visco analyzer tests.

How do you test flour for gluten?

All flour mills produce Certificates of Analysis (COA). If you don't have one, ask for it from your miller. You can look for the protein level on the COA. The higher the percentage of protein in your flour, the more gluten there is in it.

How do you test the quality of gluten?

To determine whether gluten is starch-free, squeeze the gluten mass and let 1 or 2 drops fall into a beaker containing clear water. If starch is still present, it will make the water cloudy. When the gluten mass is finally clean, press it between the hands and roll into a ball.

Wheat School - How a Farinograph Tests for Dough Quality - CIGI

What method is used to determine gluten quality?

The Glutomatic System is the world standard for determination of gluten quantity and quality.

What is elastic dough?

Mixing gluten and water results in a dough that almost feels like rubber. Wheat flour contains 6 to 12 percent gluten, enough to provide a gluten network that holds the carbohydrates together. This dough is elastic and stretchy, but not as strong and tough as the gluten dough.

How is quality of wheat measured?

It is usually quantified by removing damaged kernels by hand from potions free of impurities. Grain grades contain a limit of damage kernels for each grade, for instance for wheat to be grade one must contain no more than 0.4% of the total weight.

What is a farinograph used for?

The farinograph is a recording dough mixer that measures and records the torque developed by the action of the mixer blades on the dough during mixing. It is used to estimate the water absorption of flours, the relative mixing time, the stability to overmixing, and rheological properties of the dough during mixing.

What is the resistance to flow or the consistency of the flour?

The farinograph is a tool to assess baking qualities and performance of wheat flour doughs. It records the resistance to deformation, or the consistency of dough mixed from flour and water.

What is dough rheology?

In baking and cereal science, rheology is of particular interest. Dough is a viscoelastic material which behaves as both a liquid and a solid. It exhibits a viscous (fluid-like) and an elastic (solid-like) behavior when a force is applied to it.

What is flour quality determined by?

Parameters that are used to determine flour quality include: Physiochemical characteristics: protein content, wet gluten content, ash content as indicator of extraction rate, moisture level, enzymatic activity, particle size distribution.

Which tool is used to measure the viscosity of flour mixture explain its principle and methods with neat diagram?

The farinograph is a tool used for measuring the shear and viscosity of a mixture of flour and water.

How do you assess the quality of different types of grains?

Grain quality is defined by several factors such as physical (moisture content, bulk density, kernel size, kernel hardness, vitreousness, kernel density and damaged kernels), safety (fungal infection, mycotoxins, insects and mites and their fragments, foreign material odour and dust) and compositional factors (milling ...

Which of the following instruments would you use to measure the mass of wheat flour?

The physical balance or called as the beam balance was the first instrument which is used to measure the solid mass.

What is wheat quality?

Wheat quality refers to the performance of grain to meet the requirements of its use in flour milling, breads, noodles, cereals, pasta or animal feed. Quality is determined by the genetic attributes of the variety grown and the environmental conditions during crop growth.

How do you test the elasticity of dough?

The Alveograph test consists of producing a test piece of dough, which, under air pressure, turns into a bubble. This process reproduces the deformation of the dough when subject to carbon dioxide during fermentation. The Alveograph test measures the visco-elastic properties of a bubble of dough as it is inflated.

How do you know if dough is elastic?

The Dough Passes the Windowpane Test

To do this, tear off a chunk of dough and stretch it between your fingers. If the dough tears, you haven't developed enough gluten and it needs more kneading. If it stretches without breaking, making a windowpane of sorts, you're done and you can let the dough rest.

What's it called when you leave dough to rise?

Proofing (aka final fermentation, final rise, second rise, or blooming) is the dough's final rise that happens after shaping and just before baking. The entire dough fermentation process is sometimes referred to as the proofing process.

How can we test the quality of wheat flour at home?

To test the adulteration, you can simply sprinkle some flour in a glass of water and check if the bran floats on the top. Sometimes wheat flour is also adulterated with chalk powder. You can check for the presence of chalk powder by adding some dilute hydrochloric acid to the grain sample in a test tube.

What is gluten extraction?

Through a process called centrifugation the major constituents of the flour are separated. The starch and other constituents dissolve, but the gluten, which is not water soluble, does not. Once starch and gluten are separated by centrifugation, the gluten is washed thoroughly and dried.

Which instrument is used for the determination of viscosity?

The measurement of fluid viscosity is conducted with a device known as a viscometer. For liquids with viscosities that vary with flow conditions, an instrument called a rheometer is used. Viscometers only measure viscosity under one flow condition.

How do you measure viscosity of dough?

The u-tube capillary viscometer is a simple method to qualitatively estimate viscosity. This method measures the resistance of liquid to flow through a 'U'-shaped capillary channel.

Which viscometer is used for viscosity measurement?

Falling ball viscometers

A falling ball viscometer measures the viscosity of fluids and some units can also measure the viscosity of gases.