How to do the sparging during the mashing process

1) The temperature of the Sparging water must be appropriate in a brewery. Generally controlled the temperature at 76 ~ 78 ℃, preferably not more than 80 ℃, not lower than 74 ℃. If the water temperature is too high, it is easy to wash out a large amount of viscous substances and destroy a-amylase. If the water temperature is too low, the residual sugar will not be washed cleanly in brewhouse.
Mashing process, sparging, mashing, rake, grain, brewery, beer equipment, brewhouse,boiling process

Mashing process, sparging, mashing, rake, grain, brewery, beer equipment, brewhouse,boiling process

(2) The PH value of the sparging water must be appropriate. Generally, the PH value of the washed waste water is below 6, but the adjustment of the pH value in actual production is more troublesome. Therefore, it is required to control the pH value of the wort water as much as possible to be below 6.5, which can reduce the dissolution of husk polyphenols, and facilitate the coagulation of proteins during the boiling process of wort, and the color of the wort is also lighter.

(3) The number of sparging should also have a degree. Although the multiple recovery of residual sugar can improve the utilization rate of raw materials, the excessive washing times will wash out a lot of harmful components in the wheat husk, such as polyphenols and pigment substances, which will be detrimental to the taste and shelf life of beer. In addition, excessive washing of the wort will reduce the concentration of the mixed wort in the boiling pot, and a large amount of heat energy will be used to evaporate the water, and this energy consumption will increase the production cost.

(4) Sparging should follow the principle of a small number of times. A small amount means that the Sparging water has just covered the bad layer, and it can be slightly higher than 2-3cm.

(5) The first Sparging time should be mastered well. A more suitable time to wash the dregs can wash away more leaching substances.

(6) It is not necessary to open the rake every time Sparging, especially in the case that the grains layer is relatively loose, generally the first washing grains (including the second time at most) should be ploughed in principle, because at this time the grains in the grains layer should be ploughed. The residual sugar concentration is high, the grains layer is relatively compact, and the tillage grains can help to wash out the extract and loosen the grains layer.

(7) In the case of difficult filtration, the top water method is often used to reorganize the wort layer, but when the top water is used, the concentration of the wort layer and the unfiltered wort will be diluted to a certain extent, and the top water will bring a large amount of water to boiling. In this way, the number of times and the amount of water that can be washed will be affected, and the residual sugar will be too high.

(8) In the case that the evaporation intensity of the boiling pot is low, the method of boiling while washing the waste can be considered, which can wash out some residual extracts, but pay attention to ensure the normal boiling time.

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