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Packing a punch: understanding how flavours are produced in lager fermentations
Claire Lin Lin1,2, Roberto de la Cerda García-Caro3, Penghan Zhang4
1Brewing 345, Novozymes A/S, Biologiensvej 2, 2800 Kongens, Lyngby, Denmark.
FEMS Yeast Research
|July 6, 2021
Summary
This review explores how raw ingredients and yeast influence lager beer flavor. It examines current advancements to enhance lager beer taste profiles for today's consumers.
Area of Science:
- Food Science
- Fermentation Science
- Sensory Science
Background:
- Lager beers hold a dominant market share globally, surpassing ales in popularity.
- Consumer perception of beer drinkability is influenced by appearance, sensory characteristics, and psychological factors.
- Understanding flavor generation is crucial for optimizing beer quality.
Purpose of the Study:
- To provide a comprehensive review of flavor generation in lager beer production.
- To specifically analyze the impact of raw ingredients and yeast strains on final flavor profiles.
- To discuss recent innovations aimed at improving lager beer flavor for contemporary consumers.
Main Methods:
- Literature review of scientific publications on beer brewing and flavor chemistry.
- Analysis of the role of malts, hops, water, and yeast in flavor development.
- Examination of emerging technologies and strategies in lager beer production.
Main Results:
- Key flavor compounds are derived from malt (e.g., diacetyl, esters) and hops (e.g., terpenes, sulfur compounds).
- Specific yeast strains (Saccharomyces pastorianus) significantly contribute to lager's clean flavor profile and aroma.
- Processing conditions, such as fermentation temperature and duration, critically shape flavor outcomes.
Conclusions:
- Optimizing raw material selection and yeast management is essential for achieving desired lager beer flavor profiles.
- Ongoing research into yeast genetics and fermentation technology offers potential for novel flavor development.
- Tailoring lager beer characteristics to evolving consumer preferences remains a key focus for the brewing industry.
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