Cited by 124Coffee research and impactsPhytochemicals and Antioxidant ActivitiesPotato Plant Research

Confirmation That the Maillard Reaction Is the Principle Contributor to the Antioxidant Capacity of Coffee Brews

Liu, Yazheng, Kitts, David D.·2011·Food Research International

Abstract

Chemical characteristics related to the antioxidant activity of roasted coffee (RC) were evaluated, using non-roasted coffee beans (NRC) and model Maillard reaction products (MRPs) as controls. The formation of MRPs and the degradation of phenolics in RC were characterized by employing a battery of fluorescence, UV–vis spectra and tri-stimulus color parameters measured on NRC, RC and the model MRPs. Total chlorogenic acid (CGA) and caffeine contents in NRC and RC extracts were also quantified using HPLC. Both RC and controls showed high antioxidant activity in three chemical based assays irrespective of caffeine content. Data from this study suggested that natural phenolics present in NRC had higher antioxidant activity compared to MRPs derived from coffee and model MR systems. However, MRPs were the prevailing antioxidants in RC as free CGA was lost (>90%). The mechanisms of the antioxidant action associated with coffee MRPs involved hydrogen atom transfer and single electron transfer mechanisms.

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Crossref · 10.1016/j.foodres.2010.12.037

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Authors
Liu, Y., & Kitts, D. D.
Affiliations
University of British Columbia (CA)
Corresponding author
Kitts, David D.
Venue
Food Research International
Publisher
Elsevier BV
Published
2011-10
Volume
44
Issue
8
Pages
2418-2424
ISSN
0963-9969 (ISSN-L)
OpenAlex
W1977159792
Cited by
124
References
38
Citations by year
2026: 1 · 2025: 9 · 2024: 9 · 2023: 6 · 2022: 13 · 2021: 6 · 2020: 12 · 2019: 9 · 2018: 10 · 2017: 5 · 2016: 12 · 2015: 5 · 2014: 12 · 2013: 8 · 2012: 5
FWCI
6.33
Type
journal article
Language
en
Open access
closed
Locations
Food Research International (publishedVersion)
Funders
Natural Sciences and Engineering Research Council of Canada
Topics
  • Health Sciences › Medicine › Pharmacology › Coffee research and impacts
  • Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Potato Plant Research
Keywords
Maillard reaction, roasted coffee, antioxidant capacity, chlorogenic acid, phenolic degradation, caffeine, hydrogen atom transfer, single electron transfer, coffee brews

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