Determination of the fermentation cellar yield in order to monitor brewhouse operations
Wort from the midpoint of chilling/pitching wort
The fermentation cellar yield is calculated using the value determined for the amount of extract contained in a batch of wort relative to the amount of extract present in the raw materials used to produce the wort.
This method describes how to determine the amount of carbon dioxide dissolved or chemically bound in water.
Water intended for use as an ingredient in the production of beer (brewing liquor) or other foods
A defined amount of formaldehyde is added to beer. Haze forms in the beer which is correlated with "warm days".
Valid for all non-turbid beers
The formation of haze is forced through the addition of formaldehyde and storage at 0 °C. The difference in the turbidity formed and the turbidity at the beginning is compared.
This method describes the conditions under which sensory analysis is to be performed.
Beer, beer-based beverages, non-alcoholic beverages, mineral water
One of the fundamental prerequisites for a properly structured sensory evaluation of beverages is training members of the tasting panel.
Hops and hop products intended for use in beer brewing or elsewhere in the food industry
The volatile constituents in hops or hop products are obtained by means of steam distillation. The hydrocarbon and oxygen fractions are separated using a process involving column chromatography.
This method describes the determination of four hop aroma compounds found in hops and hop products using gas chromatography.
Hops and hop products intended for use in beer brewing or elsewhere in the food industry
The hop oil obtained through steam distillation (refer to links) is dissolved in an organic solvent, separated into its components by means of gas chromatography and determined with a flame ionization detector. The contents are expressed as a percentage of the area of each component compared to the overall area of the peak.