Comparison of GC and colorimetry for the determination of alkylresorcinol homologues in cereal grains and products

Cereal alkylresorcinols (ARs), a group of phenolic lipids mainly found in the outer parts of wheat and rye kernels, are currently being studied for possible use as biomarkers of intake of whole grain wheat and rye foods. Several different techniques have been used for quantitative AR analysis over t...

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Veröffentlicht in:Food chemistry 2009, Vol.113 (4), p.1363-1369
Hauptverfasser: Landberg, Rikard, Andersson, Annica A.M., Åman, Per, Kamal-Eldin, Afaf
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container_end_page 1369
container_issue 4
container_start_page 1363
container_title Food chemistry
container_volume 113
creator Landberg, Rikard
Andersson, Annica A.M.
Åman, Per
Kamal-Eldin, Afaf
description Cereal alkylresorcinols (ARs), a group of phenolic lipids mainly found in the outer parts of wheat and rye kernels, are currently being studied for possible use as biomarkers of intake of whole grain wheat and rye foods. Several different techniques have been used for quantitative AR analysis over the years, but with limited attempts to compare them. In this present study, two commonly used methods, gas chromatography and colorimetry, were evaluated and compared. Gas chromatographic and the colorimetric methods showed good agreement. The GC-method provides the total amount of AR and relative homologue composition, whereas the colorimetric method, which is based on azo-coupling of a Fast Blue salt to the hydroxyl group(s) in the alkylresorcinol molecule, only provides the total amount, but is much faster and does only requires a UV-spectrophotometer.
doi_str_mv 10.1016/j.foodchem.2008.08.072
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source Elsevier ScienceDirect Journals
subjects Alkylresorcinols
Analysis
Barley
biomarkers
Cereals
Colorimetry
food analysis
food composition
Food Science
Gas chromatography
grain products
lipid content
Livsmedelsvetenskap
Nutrition and Dietetics
Näringslära
product evaluation
Rye
small grains
Wheat
title Comparison of GC and colorimetry for the determination of alkylresorcinol homologues in cereal grains and products
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