TECHNICAL NOTE: Caffeine Content of Specialty Coffees

Authors: McCusker R.R.1; Goldberger B.A.1; Cone E.J.2

Source: Journal of Analytical Toxicology, Volume 27, Number 7, October 2003 , pp. 520-522(3)

Publisher: Preston Publications

Key:
Free Content - Free Content
New Content - New Content
Subscribed Content - Subscribed Content
Free Trial Content - Free Trial Content

Abstract:

Caffeine is the world's most widely consumed drug with its main source found in coffee. We evaluated the caffeine content of caffeinated and decaffeinated specialty coffee samples obtained from coffee shops. Caffeine was isolated from the coffee by liquid-liquid extraction and analyzed by gas chromatography with nitrogen-phosphorus detection. In this study, the coffees sold as decaffeinated were found to have caffeine concentrations less than 17.7 mg/dose. There was a wide range in caffeine content present in caffeinated coffees ranging from 58 to 259 mg/dose. The mean (SD) caffeine content of the brewed specialty coffees was 188 (36) mg for a 16-oz cup. Another notable find is the wide range of caffeine concentrations (259-564 mg/dose) in the same coffee beverage obtained from the same outlet on six consecutive days.

Document Type: Research article

Affiliations: 1: Department of Pathology, Immunology, and Laboratory Medicine, University of Florida College of Medicine, P.O. Box 100275, Gainesville, Florida 32610-0275 2: ConeChem Research, LLC, 441 Fairtree Drive, Severna Park, Maryland 21146

The full text electronic article is available for purchase. You will be able to download the full text electronic article after payment.

$43.00 plus tax

 

OR

Back to top

Key:
Free Content - Free Content
New Content - New Content
Subscribed Content - Subscribed Content
Free Trial Content - Free Trial Content
Page Help Click here for Page Help
Shopping cart
Tools
Sign in






Need to register?
Sign up here
Text size: A | A | A | A