Wastewater generated in the industrial production of beer and food
Well-mixed wastewater is poured into an Imhoff funnel, and the volume of sludge is recorded using the volumetric scale on the graduated cylinder after a settling time of two hours.
After decanting the supernatant, the deposits are quantitatively transferred to a platinum dish in which, after drying at 105 °C, the dry residue after evaporation is determined by weight.
After annealing in a muffle furnace at 550 °C for 30 min, the ash content is determined gravimetrically.
The annealing losses are calculated from the difference in weight between the dry residue after evaporation and the ash content.
The method describes the determination of Pseudomonas aeruginosa in mineral, spring and table water.
Mineral, spring and table water as well as drinking water to be marketed.
Qualitative detection of Pseudomonas aeruginosa in mineral water, spring water, table water and other drinking water bottled for distribution to the consumer by means of enrichment culture in double-concentrated malachite green peptone broth [1].
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Qualitative detection of Pseudomonas aeruginosa in mineral water, spring water, table water, and other drinking water filled for delivery to the consumer, by means of membrane filtration (MF) and soaking the filter in single-strength malachite green peptone broth [1, 2].
Barley intended for the production of malt is to be evaluated on the basis of the characteristics described below.
visual assessment
Water intended for use as an ingredient in the production of beer (brewing liquor) or other foods
A specified quantity of water is evaporated, and any remaining moisture is subsequently eliminated in a drying oven. The dry residue is then weighed.
Water intended for use as an ingredient in the production of beer (brewing liquor) or other foods
Determination of the dry residue (ash content) of a filtered or unfiltered water sample.