English Reference

Word

trigonelline

Phoneticstrig-o-nel-line

US/ˌtrɪɡəˈnɛliːn/

UK/ˌtrɪɡəˈnɛliːn/

Definition

n. a natural substance found in coffee beans that helps create the drink's bitter flavor and aroma while also acting as a mild stimulant and diuretic

n. a bitter pyridine alkaloid found in coffee beans that undergoes thermal degradation during roasting to produce nicotinic acid and various aromatic compounds.

Examples

“The amount of trigonelline in the coffee can change its taste.”

“During the roasting process, trigonelline breaks down into vitamin B3, which contributes to the coffee's unique smell.”

“The degradation of trigonelline during the Maillard reaction is a critical factor in the development of the complex flavor profiles found in dark roasts.”

Examples

simple

“The amount of trigonelline in the coffee can change its taste.”

contextual

“During the roasting process, trigonelline breaks down into vitamin B3, which contributes to the coffee's unique smell.”

complex

“The degradation of trigonelline during the Maillard reaction is a critical factor in the development of the complex flavor profiles found in dark roasts.”

Real-World Examples

“Trigonelline is an alkaloid that contributes to coffee's bitterness [1].”
Springer Nature Link · 20 Sept 2025
“Trigonelline, observed at similar levels in Arabica and stenophylla, may also contribute to bitterness, although more indirectly, since trigonelline content is reduced during roasting and as a result, bitterness is linked to the formation of nicotinic acid 54.”
npj Science of Food · 20 Sept 2025

Etymology

Derived from the genus name Trigonella (fenugreek), where the alkaloid was first isolated in 1885 by chemist E. Schulze.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C1 · Advanced
Frequency
Rare
Updated

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English Reference