mateine

noun

1. (uncountable)Caffeine extracted from maté plant.

   “Caffeine is a xanthine alkaloid compound that acts as a stimulant in humans. Caffeine is sometimes called guaranine when found in guarana, mateine when found in mate, and theine when found in tea.”

2. (uncountable)A hypothetical xanthine alkaloid said to be found in maté, supposed to resemble caffeine.

   “Unlike tea and coffee, however, it does not contain caffeine. Instead, its main active ingredient is a xanthine alkaloid known as mateine.”