This method describes how to determine the moisture content of specialty malt.
Specialty malt intended for use in beer brewing or elsewhere in the food industry
Determination of the percentage of nitrogen that has dissolved in the wort during the Congress mash method
Suitable for (Congress) mash
The Kolbach index is used to express the quantity of the nitrogenous substances found in malt, which go into solution under the conditions present during the Congress mash method. It is a measure of the degree of proteolytic modification of the malt and also provides an indication for the quantity of proteolytic enzymes contained in the malt. The Kolbach index is less conclusive than other methods due to its dependence on the total nitrogen content and the provenance of the barley. Therefore, it must always be considered together with the total nitrogen content.
Malt intended for use in beer brewing or elsewhere in the food industry.
The malt is placed in a stainless steel wire sieve drum. For a designated time period, the kernels are pressed against the rotating wire sieve drum by a roller, whereby the friable portion of the malt falls through the sieve, while the glassy portion is retained in the drum.
Barley malt intended for use in beer brewing or elsewhere in the food industry
High-molecular weight dextrins and starch present in the wort extracted from brewery spent grains are precipitated through the addition of ethanol, centrifuged and dissolved in phosphate buffer, followed by the addition of an iodine solution. Depending upon the molecular weight and degree of branching, a red to blue color forms, the intensity of which is measured spectrophotometrically at 578 nm.
This method describes the determination of the extract content of malt through the application of a complete extraction technique.
Malt intended for use in beer brewing or elsewhere in the food industry
Since the Congress mash method does not accurately quantify the extract content of malt, an attempt was made to eliminate the sources of error present in the method. The method described below incorporates the procedure for producing a Congress mash according to the EBC, followed by a complete extraction of the dissolved substances with a suitable apparatus. After the extraction is complete, the weight is determined. This method is preferred for determining brewhouse yield (e.g., during brewhouse equipment commissioning tests).
This method describes how to determine the extract content of roasted and caramel (crystal) malt by means of a modified Congress mash method.
Roasted and caramel (crystal) malts intended for use in beer brewing or elsewhere in the food industry
Pilsner malt, of which the moisture content, extract and color are known, is mashed together with roasted or caramel (crystal) malt according to the Congress mash method. The extract content of the roasted or caramel (crystal) malt is determined by taking the analysis values for the pilsner malt into account.