Why we use flour for yeast fermentation

Why do we produce yeast from flour and not molasses?

Yeast production from molasses:

Raw material supply: Molasses can only be found in certain months of the year. It is also necessary to store molasses in large quantities, as it is used in many sectors. Larger land is needed to build thousands of tons of molasses warehouses.

Molasses is a very dirty and sticky raw material. Since yeast produced from molasses is very dirty, it must be washed with water at least twice. In addition, a lot of water is used for washing the fermenters, machinery and equipment used. Therefore, approximately 30 kg of water is used to produce 1 kg of yeast.

Since molasses is a very dirty and sticky raw material, it is common for fermenters to become infected. Therefore, continuous production cannot be made. Only batch system manufacturing can be done. In the batch system, you empty the fermenter once a day and you need very large capacity Centrifuge separators, vacuum rotary filters and packaging plants to process it in a very short time.

Liquid waste. At the end of the fermentation, the wastewater separated from the yeast is dark brown in color. This liquid waste should be evaporated in special evaporators and made to be discharged.

For example: A company that produces 20 tons of fresh yeast per day must discharge 600 tons of water by distillation or purifying it in treatment plants.

Environmental impact: Factories producing yeast from molasses emit a very bad odor to the environment. Therefore, many complaints are encountered.

Investment cost: Thousands of tons of molasses warehouses, large amounts of land, thousands of tons of evaporators, treatment plants; Considering all these, it is necessary to make large investments to produce yeast from molasses.

Yeast production from corn or wheat flour:

Raw material supply: The cleanest raw material available anywhere, anytime. 

There is no liquid waste: 30 kg of water is required to produce 1 kg of yeast from molasses, while only 10 kg of water is needed to produce 1 kg of yeast from flour. The water obtained at the end of fermentation is discharged without any purification process.

Environmental impact: No adverse effects on the environment. It does not emit bad odor into the environment.

Investment cost: Large-capacity facilities can be established in very small indoor and outdoor areas. Because there are no thousands of tons of molasses warehouses. There are no giant evaporators. There are no treatment plants. The capacities of the machines used are very low and the cost is very low.