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
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.
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
Barley intended for the production of malt; therefore, the kernels are to be evaluated on the basis of the characteristics described below.
Visual assessment
This method describes how to evaluate the degree of contamination or the purity of malt as part a manual inspection procedure.
Malt intended for use in beer brewing or elsewhere in the food industry.
Visual examination of malt for foreign objects. Refer to the Sieving Test for Malt (R-200.08.011).
The cations in beer and wort are determined with this analysis.
This method is suitable for both wort and beer.
Inductively coupled plasma optical emission spectroscopy (ICP-OES) is a fast and reliable method for the laboratory analysis of metals. Inductively coupled plasma (ICP), a high frequency field of ionized gas, serves as a medium for atomizing and exciting the substances found in samples. Liquid, dissolved or aerosol samples are injected into the ionized gas stream. In emission spectroscopy, ICP can be used in conjunction with a number of optical and electronic systems either simultaneously or sequentially in multi-element spectrometers. In the plasma, the atoms and ions are excited to a higher energy state bringing about the emission of electromagnetic radiation (light), primarily in the ultraviolet and visible region of the spectrum. Metals ordinarily occur as ions in the temperature range typical for ICP of 6000 to 10000 K; however, non-metals and metalloids are only partially ionized.
ICP-OES operates within a very wide range. This usually encompasses six orders of magnitude in concentrations smaller than μg/l up to g/l, depending upon the element and the concentrations used for the set of analysis data. With ICP-OES, beer and wort can also be analyzed without prior processing of the samples, in contrast to AAS. Methods for determining the following in beer and wort will be described below: Al, B, Ba, Ca, Co, Cu, Fe, K, Mg, Mn, Mo, Na, P, Si, Sr, Sn and Zn.