Chlorogenic Acids in Coffee
What chlorogenic acids are, how they change during roasting and why they matter to coffee chemistry.
What are chlorogenic acids?
Chlorogenic acids are a family of phenolic compounds naturally abundant in green coffee. They contribute to the chemistry of the raw seed and can influence taste and aroma after roasting.
During roasting
Chlorogenic acids undergo substantial transformation as temperature rises. Some break down into other compounds, including lactones and phenolic products.
Taste relevance
Chlorogenic-acid-derived compounds can contribute to bitterness, astringency and other sensory characteristics. Their sensory effect depends on concentration and the broader chemical matrix.
Avoid simplistic health claims
The presence of a compound in coffee does not by itself establish a health benefit or harm. Health effects require evidence about dose, preparation, population and biological context.
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Green coffee
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Green coffee →Coffee chemistry
Explore the compounds and reactions that shape roasted coffee.
Coffee chemistry →Coffee extraction
Connect grind, water, temperature, time, concentration and extraction.
Coffee extraction →Coffee Knowledge presents technical subjects as an educational reference. Terminology, grading systems and production practices can vary by country, producer, equipment and commercial context.