Compounds in coffee Quinic Acid
Quinic Acid (QA) change in coffee. Quinic Acid is a type of acid that is found in.
Together with citric and malic acids, QA makes up a large part of pure coffee's overall acid composition. QA levels gradually increased while chlorogenic acid levels declined during roasting, indicating that QA is generated via chlorogenic acid cleavage.
The concentration of QA peaks at a French (dark) roast and then steadily declines as the roast progresses. When this happens, the actual temperature data is not …