Utvärdering av bryggeriers möjligheter till kvalitetsbestämning av öl genom kemisk analys
Typ
Examensarbete på kandidatnivå
Program
Publicerad
2021
Författare
Fredriksen, Agnes
Markovic, Branko
Forsling, Elin
Arnstrand, Elvira
Hedfors, Johannes
Liljeqvist, Max
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
This report accounts for chemical analysis of beer. The methods which have been
used for the analysis are UV/Vis spectrophotometry and GC-MS. For extraction
and injection of the analytes in the GC-MS, three differrent methods were used.
These were HS-SPME, IM-SPME and direct injection. The purpose of the analyses
was to evaluate how useful different methods are for breweries. The utility of the
methods were evaluated in both the aspect of what type of information was obtained
as well as the aspect of cost. The financial aspect allows certain methods to be more
suitable for some breweries but not for others. For breweries that have greater financial
opportunities investments in expensive equipment can be profitable. Similar
investments may be impossible for smaller breweries. The laboratory work was supplemented
with literature studies as well as interviews with representatives from the
brewing industry. The results from the experiments showed that HS-SPME with an
extraction time of 15 minutes was the most effective method for beer analysis. This
conclusion could be drawn since VOCs, which are most relevant for beer analysis,
were best demonstrated with HS-SPME. An extraction time longer than 15 minutes
did not provide any further valuable data. The conclusion was also drawn that
the UV/Vis spectrophotometer can be valuable equipment to invest in if knowledge
about specific measurements is possessed. It is not sustainable for smaller breweries
to pay for the development of a method for analysis. Therefore a market exists
for consultants, e.g BeerLab, that can perform analyses of beers for the smaller
breweries.