Talk to any chef or experienced foodie and everyone will agree that sugars play an important role in the overall pleasure we receive from eating. From breakfasts to late night desserts, sugars make an impact in our sensorial experience.
Trigonelline is a bitter alkaloid in coffee which serves to produce important aroma compounds. In terms of concentration trigonelline is higher for arabica than robusta and ranges from about 0.6-1.3% and 0.3-0.9%, respectively.
In its pure state - caffeine, or 1,3,7-trimethylxanthine, exists as a white powdered alkaloid with an intensely bitter taste. Although coffee is most associated with caffeine, there are over 1,000 compounds in coffee making caffeine just a tiny fraction (~0.01%) of coffee's total composition.
In both arabica and robusta coffee, free and bound proteins account for roughly 10 to 13% of coffee’s dry matter. Since proteins are made of smaller components called amino acids - these can vary significantly within each coffee based on a number of factors.