The secret of roasting: the chemistry behind the aroma of coffee
Roasting is the moment of magical transformation, when the green coffee bean transitions from its raw, grassy nature to the rich and complex aromas that define coffee's charm. For industry professionals, roasting isn't just a technical process - it's an art that requires a balance between precision and intuition.
The chemistry behind baking
When heated, coffee beans undergo a series of complex chemical reactions. Here are the key processes that shape aroma and flavour:
The reaction of MaillardA: This reaction starts at temperatures around 140°C when amino acids interact with reducing sugars. The result is the creation of compounds such as pyrazines (imparting nutty and roasted notes) and furans (contributing sweet and caramel flavours).
Caramelization: It follows at temperatures around 170°C, when the sugars break down, creating rich flavour profiles from sweet and buttery to intensely bitter.
Lipid degradationA: The fats in the grains also play a role, generating aromatic compounds that contribute to fruity, floral and vinous notes, especially in lighter roasts.
Roasting in Blue Bag Coffee

В Blue Bag Coffee Our roast masters use in-depth knowledge of these chemical processes to create unique profiles for each coffee. For example:
- Banana - This coffee, processed using a natural anaerobic method, offers pronounced notes of plum, guava, tangerine and chocolate. The roasting highlights the richness of the flavours, creating a sweet and fruity profile.
- Colombia Blackberry Mint - A special coffee with a chunky processing that reveals subtle notes of blackberry and the freshness of mint. Perfect for lovers of balanced and refreshing flavours.
- Tanzania Geisha - Elegant and aromatic coffee processed in a natural way, with floral and fruity nuances characteristic of the Geisha variety. The roasting adds extra depth and complexity to the flavour.

Discover the richness of flavour
The roasting process is the heart of every cup of coffee. By understanding these chemical processes, we at Blue Bag Coffee create exceptional flavors and aromas to inspire every coffee lover.
For more information or to try one of our specialty coffees, visit our product page.
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