Applicable for all (laboratory) worts
Medium and high molecular weight proteins are precipitated by phosphomolybdic acid. The nitrogen is determined in the filtrate. Therefore, the results express the amount of low molecular weight proteins.
Pure yeast cultures, foreign yeasts, dry yeast.
The ammonia fermentation test is used as an additional method for analysing pure yeasts.
The method describes the conditions for inoculating a culture medium.
Laboratories in the beverage industry in general and the brewing industry in particular.
The removal and addition of material from and to cultures, e.g. when inoculating culture media. Strict care must be taken to ensure that no foreign microorganisms enter the culture vessels or the inoculation material being transferred.