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Wort Filtration
| Having or dissolved the soluble matters by the cofoundation it is necessary to separate the wort of the insoluble part called grains out or bran. The operation is soon made in two phases the first flow of must and the operation of washing of the extract that contains grains out. The must and the water of washing must then be clear if it contributes during the operation too many substances badly dissolved, the clarification of the beer will be too difficult. The quality of the beer I also could be altered by a washing of grains out with alkaline water because polifenoles and bitter substances of the rind of Malt dissolve very easily in alkaline water still more if it considers that the washing becomes in water to Maxima temperature of 75ºc; with regard to the temperature is very important not to exceed 75ºc because the risk is run still of dissolving present starch in orujo, which acarearía problems of later turbiedad and fermentation. Two types of apparatuses exist where they are made the filtration later and the washing of orujo: Cuba filter and Filter presses. | |
| Lauter Tub
The variation of concentration of grains out directly does not imply in the volume of lauter tub, being able to be the thickness of 25 to 50 cm. As disadvantage the proportion of associate is of 25%. Another advantage is the smaller manual labor, but the time of filtration is greater. |
Filter
Presses
A denser must can be leaked, with one more a faster filtration and a greater proportion of associates of 75%. As disadvantages must is less shining, there is greater amount of insaturados fatty acids, and the work is more demanding. |
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