Dietary antioxidants in coffee leaves: impact of botanical origin and maturity on chlorogenic acids and xanthones
| Autor: | Maria do Céu Silva, Marina Resmini, Luciano Navarini, Ângelo Monteiro, Helena Gil Azinheira, Silvia Colomban, Leonor Guerra-Guimarães |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0301 basic medicine
Physiology leaf development stages Clinical Biochemistry Biology alkaloids 01 natural sciences Biochemistry Article mangiferin 03 medical and health sciences Human health chlorogenic acids Dry matter Food science xanthones Green coffee Molecular Biology Maturity (geology) 030109 nutrition & dietetics Dietary intake 010401 analytical chemistry food and beverages Cell Biology 0104 chemical sciences antioxidants Polyphenol coffee leaves |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal Repositório Científico de Acesso Aberto de Portugal (RCAAP) instacron:RCAAP Antioxidants Volume 9 Issue 1 |
| Popis: | 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&ndash 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. |
| Databáze: | OpenAIRE |
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