Beer is an alcoholic beverage consumed on a regular basis by
many people around the world. In Brazil, for instance, the average
beer consumption recorded in 2008 was around 57 l per inhabitant
(Sindicerv, 2014). Nowadays, consumption of craft beer has
increased due to the different types available. Together with being
smaller scale and independent, the main characteristic of the craft
breweries is to put the emphasis on the flavor and brewing techniques
(Oliver, 2011, pp. 270e271). Craft beer is a non-filtered and
unpasteurized product that maintains unaltered sensorial characteristics.
When compared to industrial beers, craft beer is more
subject to microbial contamination which may result in spoilage
(turbidity, acidification and the production of undesired aromatic
compounds) (Giovenzana, Beghi, & Guidetti, 2014).
Moreover, due to the absence of pasteurization and micro-
filtration in craft beer brewing, the need is much greater for quality
measurements during the entire process and not only in finished
beer. Monitoring must be performed on raw materials and a individual process stages. This also differs from industrial beers.