Methylxanthine Content in Commonly Consumed Foods in Spain and Determination of Its Intake during Consumption.

ABSTRACT: Methylxanthines present psychostimulant effects. These compounds have low toxicity and their consumption at moderate levels presents some beneficial health effects, whereas some significant risk appears at high levels. Samples of common types of methylxanthine-containing beverages and foods consumed in Spain were analyzed to determine their content. Caffeine was the methylxanthine that was most found in the samples investigated. Instant coffees gave the highest caffeine percentage (18-44 mg·g-1). Green and scented teas were found to have a caffeine dry-weight content (8-26 mg·g-1) equivalent to ground coffees (13-23 mg·g-1), but black and pu-erh teas (18-30 mg·g-1) had a higher caffeine content. The evaluation of the most conventional methods for preparing espresso coffees showed that an e

SUBMITTER: Sanchez JM 

PROVIDER: S-EPMC5742777 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature