An examination of consumer exposure to caffeine from retail coffee outlets

Desbrow, Ben, Hughes, Roger, Leveritt, Michael and Scheelings, Pieter (2007) An examination of consumer exposure to caffeine from retail coffee outlets. Food and Chemical Toxicology, 45 9: 1588-1592. doi:10.1016/j.fct.2007.02.020


Author Desbrow, Ben
Hughes, Roger
Leveritt, Michael
Scheelings, Pieter
Title An examination of consumer exposure to caffeine from retail coffee outlets
Journal name Food and Chemical Toxicology   Check publisher's open access policy
ISSN 0278-6915
1873-6351
Publication date 2007-09
Sub-type Article (original research)
DOI 10.1016/j.fct.2007.02.020
Volume 45
Issue 9
Start page 1588
End page 1592
Total pages 5
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Formatted 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.
Keyword Caffeine
Coffee
Consumer exposure
Variability
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Human Movement and Nutrition Sciences Publications
 
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Created: Wed, 03 Apr 2013, 16:25:03 EST by Michael Leveritt on behalf of Examinations