Dietary Antioxidants in Coffee Leaves: Impact of Botanical Origin and Maturity on Chlorogenic Acids and Xanthones.

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2019
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Abstract
Natural polyphenols are important dietary antioxidants that significantly benefit human health. Coffee and tea have been shown to largely contribute to the dietary intake of these antioxidants in several populations. More recently, the use of coffee leaves to produce tea has become a potential commercial target, therefore prompting studies on the quantification of polyphenols in coffee leaves. In this study a variety of coffee leaf species, at different development stages, were analyzed using ultra-high pressure liquid chromatography. The results demonstrate that both the botanical origin of the samples and their maturity influence significantly the concentration of the antioxidants; for total chlorogenic acids a two-fold difference was found between different species and up to a three-fold variation was observed between young and mature leaves. Furthermore, the range of concentrations of chlorogenic acids in young leaves (35.7-80.8 mg/g of dry matter) were found to be comparable to the one reported for green coffee beans. The results provide important data from which potential new commercial products can be developed.
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monteiro2019dietaryantioxidants Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Monteiro, Ă‚ngelo;Colomban, Silvia;Azinheira, Helena G;Guerra-GuimarĂŁes, Leonor;Do CĂ©u Silva, Maria;Navarini, Luciano;Resmini, Marina;
Journal Antioxidants (Basel, Switzerland)
Year 2019
DOI E6
URL
Keywords
antioxidants mangiferin alkaloids chlorogenic acids coffee leaves leaf development stages xanthones

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