The husk content of barley intended for use in beer production should be known.
The husks are separated from the barley kernels through treatment with sodium hypochlorite. The husk content is determined by calculating the reduction in weight, (dry matter) resulting from the removal of the husks.
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.
Volumetric determination of the husk fraction
Grist from malt or adjuncts
The sieve analysis is performed on a sample of brewery grist of a known weight with a shaking device containing a set of sieves (according to DIN ISO 3310-1 specifications or a Pfungstädter plansifter sieving device). The material retained on sieve 1 is then poured into a 500 ml graduated cylinder and the volume (without shaking) is read on the graduated cylinder.
This method describes how to evaluate husk character as part of the visual and manual inspection of a lot of barley.
Barley intended for the production of malt is to be evaluated on the basis of the characteristics described below.
Visual assessment
This method describes how to determine the percentage of kernels with damaged husks in a lot of barley as part of visual and manual inspection.
Barley intended for the production of malt; therefore, the kernels are to be evaluated on the basis of the characteristics described below.
Visual assessment
Hop extract intended for use in beer brewing or elsewhere in the food industry