Flavour stability is vital to the brewing industry as beer is often stored for an extended time under vari- able conditions.
Developing an accelerated model to evaluate brewing techniques that affect flavour sta- bility is an important area of research.
Here, we performed metabolomics on non-volatile compounds in beer stored at 37 C between 1 and 14 days for two beer types: an amber ale and an India pale ale.
The experiment determined high temperature to influence non-volatile metabolites, including the purine 5- methylthioadenosine (5-MTA). In a second experiment, three brewing techniques were evaluated for improved flavour stability: use of antioxidant crowns, chelation of pro-oxidants, and varying plant con- tent in hops.
Sensory analysis determined the hop method was associated with improved flavour stabil- ity, and this was consistent with reduced 5-MTA at both regular and high temperature storage.
Future studies are warranted to understand the influence of 5-MTA on flavour and aging within different beer types.