Assertion: coffee bitterness | /r/HasProperty | due
Facets:
value: to two main classes of compounds
type: CAUSE
Source sentences:
text: Using advanced chromatography techniques and a human sensory panel trained to detect coffee bitterness, Hofmann and his associates found that coffee bitterness is due to two main classes of compounds: chlorogenic acid lactones and phenylindanes, both of which are antioxidants found in roasted coffee beans.