DTU Brewery has examined how to skip the malting process and brew beer solely from barley, because it requires a lot of energy to convert barley to malt. To compensate for the lack of active enzymes that would usually be present in the malt, DTU Brewery instead adds industrially manufactured enzymes.
When you skip the malting process, the CO2 emission is reduced by 8 % in the total brewing process.
Better utilization of the side streams from beer
The production of beer leads to a number of side streams, which is really another word for a residual product that we today focus on using instead of discarding.
Brewers' spent grains—crushed malt extracted in water—is an example of a side stream. In the efforts to make the DTU Brewery more sustainable, the brewers have developed a compact filter that makes it possible to utilize nutrients in the spent grain in a financially viable way.
Researchers from the DTU Brewery have also made it possible to produce a sustainable draught beer using rice that Sticks'n'Sushi in the city of Lyngby has left over after making sushi.
