Dear Sobatech community,
What is dough homogeneity and how do you measure it?
As you might know, Sobatech always proclaims to be thé specialist in creating homogeneous foods. Put differently, we claim to constantly deliver a consistent product quality. But what is homogeneity and how do we actually measure constant consistency?
Evidently, there are multiple ways to measure dough homogeneity. During trials at our demo center we sometimes simply dose a few drops of liquid coloring into the dough to see how the coloring diffuses into the product.
Visual check – oval glasses
Another way to measure dough homogeneity is to take a small amount of product and put it in between two oval glasses. The dough is pressed in between the glasses and hold against bright day-light. This allows to closely analyze the mass, its texture and possible lumps or other inconsistencies. To show you the effectiveness of this measure – we executed a small experiment.
A liquid dough consisting of water and a premix of solids was created. Thereafter we treated the dough with three separate mechanical forces:
- 10 minutes on a batch mixer
- A pass through a Sobatech continuous mixer including low shear tooling
- A pass through a Sobatech continuous mixer including wing-shaped tooling (high shear)
Please see below pictures for the results.
The darker spots show lumps of product and/or other inconsistencies.
This picture shows less darker spots and/or inconsistencies compared to picture 1.
This picture shows limited to no inconsistencies.
Conclusion – it is all about shear force
All in all, we can conclude from this experiment that the best blender is actually a kneader. Put differently, dough homogeneity is all about shear force. Shear is needed in order to disclose lumps (pieces of flour capsulized by liquid ingredients).
For exactly that reason, Sobatech designed a new type of (extreme high shear) tooling. This tooling is called the wing-shaped tool and is all about maximizing shear force. This tool design, in combination with the general advantage of a continuous mixer that explains the relatively large contact surface inside the mixing chamber, results in a remarkable shear force.
Do you want to learn more about this topic? Please visit our website or contact us on firstname.lastname@example.org.