An examination of consumer exposure to caffeine from retail coffee outlets.

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Title An examination of consumer exposure to caffeine from retail coffee outlets.
Author Desbrow, Ben; Hughes, Roger Michael; Leveritt, Michael; Scheelings, Pieter
Journal Name Food and Chemical Toxicology
Year Published 2007
Place of publication United Kingdom
Publisher Elsevier/Pergamon
Abstract Objective: To analyse the distribution of caffeine doses obtainable from espresso coffee sold by a sample of commercial coffee vendors located on the Gold Coast, Qld, Australia. Design: A cross section of ''Espresso/short black'' coffee samples were purchased and analysed for their caffeine content using micellar electrokinetic capillary chromatography (MEKC). Coffees were collected using systematic cluster sampling across five major retail centres. Results: Ninety-seven espresso samples were analysed. The mean (±SD) quantity of caffeine was 106 ± 38 mg/serve with a concentration of 2473 ± 1092 mg/l. There was considerable variation in caffeine content. The range per serve was 25–214 mg whilst the concentration range was 580–7000 mg/l. Twenty-four samples (24.7%) contained 120 mg of caffeine or higher and 12 samples (12.3%) exceeded 167 mg per serve. Conclusions and implications: The number of heavily caffeinated samples differentiates these findings from frequently cited caffeine values and supports similar data recently collected throughout the United Kingdom. As a result, the accuracy of any previous intake modelling regarding caffeine use in the Australian population is in doubt. The present data suggests that the probability of consumer exposure to high caffeine doses is greater than previously anticipated. Greater sample numbers from a broader selection of venues is required to confirm the extent of caffeine content variance within retail ground coffees.
Peer Reviewed Yes
Published Yes
Volume 45
Page from 1588
Page to 1592
ISSN 0278-6915
Date Accessioned 2008-03-07
Language en_AU
Research Centre Menzies Health Institute Qld; Centre for Health Practice Innovation
Faculty Griffith Health Faculty
Subject Nutrition and Dietetics
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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