ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Capillary gas chromatography was used to obtain high resolution profiles of 27 organic acids, caffeine, and sucrose in dimethylsulfoxide extracts of roast and ground coffees in a sixty-minute analysis. A shortened procedure was also reported for the quantitative determination of S-caffeoylquinic (SCQA) and quinic (QA) acids and sucrose. Nanogram detection limits were achieved and the reproducibility of the method was under 5% relative. Major, commercial brands of caffeinated and decaffeinated coffee produced under different roasting conditions could be distinguished based on their 5-CQA and sucrose content and on the ration of QA-to-SCQA.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1987.tb14280.x
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