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Tuesday, 24 May 2016

Infusions of artichoke and milk thistle represent a good source of phenolic acids and flavonoids

Volume 6, Issue 1, 1 January 2015, Pages 56-62


a  Mountain Research Centre (CIMO), Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, Bragança, Portugal
b  Faculty of Pharmacy, University of Salamanca, Campus Miguel de Unamuno, Salamanca, Spain 

Abstract

Cynara scolymus L. (artichoke) and Silybum marianum (L.) Gaertn (milk thistle) are two herbs well-known for their efficiency in the prevention/treatment of liver injuries, among other chronic diseases. Therefore, the aim of this work was to characterize specific bioactive components, phenolic compounds, in hydromethanolic extracts but also in infusions (the most commonly used preparations) obtained from the whole plant of milk thistle and artichoke. The phenolic profiles were accessed using HPLC-DAD-MS/ESI. Infusions of both species presented higher phenolic contents than the hydromethanolic extracts. Milk thistle presented a similar phenolic composition between the two preparations, revealing only differences in the quantities obtained. Nevertheless, artichoke revealed a slightly different profile considering infusion and hydromethanolic extracts. Apigenin-7-O-glucuronide was the major flavonoid found in milk thistle, while luteolin-7-O-glucuronide was the most abundant in artichoke. Therefore, infusions of both artichoke and milk thistle represent a good source of bioactive compounds, especially phenolic acids and flavonoids. This journal is © The Royal Society of Chemistry.

Indexed keywords

Engineering controlled terms: Organic acids
Bioactive components; Bioactive compounds; Chronic disease; Phenolic composition; Phenolic compounds; Phenolic content; Phenolic profiles; Silybum marianum
Engineering main heading: Flavonoids
Species Index: Cynara scolymus; Silybum marianum
EMTREE drug terms: antioxidant; apigenin; apigenin-7-O-glucuronide; cinnamic acid derivative; flavonoid; hydroxybenzoic acid derivative; luteolin; luteolin-7-O-glucuronide; phenolic acid; plant extract
EMTREE medical terms: artichoke; chemical structure; chemistry; comparative study; electrospray mass spectrometry; ethnopharmacology; flowering; high performance liquid chromatography; isolation and purification; Portugal; Silybum marianum; species difference; tandem mass spectrometry; traditional medicine; ultraviolet spectrophotometry
MeSH: Antioxidants; Apigenin; Chromatography, High Pressure Liquid; Cinnamates; Cynara scolymus; Ethnopharmacology; Flavonoids; Flowering Tops; Hydroxybenzoates; Luteolin; Medicine, Traditional; Milk Thistle; Molecular Structure; Plant Extracts; Portugal; Species Specificity; Spectrometry, Mass, Electrospray Ionization; Spectrophotometry, Ultraviolet; Tandem Mass Spectrometry
Medline is the source for the MeSH terms of this document.
Chemicals and CAS Registry Numbers: apigenin, 520-36-5; luteolin, 491-70-3;Antioxidants; Apigenin; apigenin-7-O-glucuronide; Cinnamates; Flavonoids; Hydroxybenzoates; Luteolin; luteolin-7-O-glucuronide; phenolic acid; Plant Extracts
ISSN: 20426496Source Type: Journal Original language: English
DOI: 10.1039/c4fo00834k PubMed ID: 25367590Document Type: Article
Publisher: Royal Society of Chemistry

  Barros, L.; Mountain Research Centre (CIMO), Polytechnic Institute of Bragança, Campus de Santa Apolónia, Apartado 1172, Portugal
© Copyright 2015 Elsevier B.V., All rights reserved.