Polyphenolic composition of a permanent pasture: Variations related to the period of harvesting
| Autor: | Didier Fraisse, Andrée Carnat, Jean-Baptiste Coulon, Philippe Pradel, Jean-Michel Besle, Jean-Louis Lamaison, Catherine Felgines, Didier Viala |
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| Přispěvatelé: | Université d'Auvergne - Clermont-Ferrand I (UdA), Unité de Recherches sur les Herbivores (URH), Institut National de la Recherche Agronomique (INRA), Domaine expérimental de Marcenat (UE MARCENAT), ProdInra, Migration |
| Jazyk: | angličtina |
| Rok vydání: | 2007 |
| Předmět: |
HYDROXYCINNAMIC DERIVATIVES
Knautia Flavonoid Pasture 03 medical and health sciences Botany [SDV.IDA]Life Sciences [q-bio]/Food engineering Chemical composition ComputingMilieux_MISCELLANEOUS 030304 developmental biology 2. Zero hunger chemistry.chemical_classification 0303 health sciences geography Nutrition and Dietetics Achillea millefolium geography.geographical_feature_category biology Animal product 0402 animal and dairy science 04 agricultural and veterinary sciences [SDV.IDA] Life Sciences [q-bio]/Food engineering 15. Life on land biology.organism_classification 040201 dairy & animal science chemistry Polyphenol Composition (visual arts) FOURRAGE HPLC Agronomy and Crop Science Food Science Biotechnology |
| Zdroj: | Journal of the Science of Food and Agriculture Journal of the Science of Food and Agriculture, Wiley, 2007, 87, pp.2427-2435 Journal of the Science of Food and Agriculture, 2007, 87, pp.2427-2435 |
| ISSN: | 0022-5142 1097-0010 |
| Popis: | Phenolics contribute to the micronutrient composition of forages, which in turn may affect animal product composition. To assess the importance of these compounds, the polyphenolic and botanical composition of a permanent mountain pasture in the Massif Central (France) were studied at three stages of growth. Phenolic fractions (acids, flavonoids and total) were analysed using HPLC and specific colorimetric methods over the whole pasture and in nine main species. On a botanical level, 43 species including 31 dicotyledons composed a mountain variant of Cynosurion grouping. Over time, the species growing on the field changed, the main plants being Festuca nigrescens and eight dicotyledons. In whole pasture, about 170 different compounds were separated by HPLC, of which only 30 were common to all stages. The total polyphenolic content was estimated as 31, 32 and 19 g kg−1 DM for the three stages. They were mainly composed of dihydroxycinnamic derivatives (3,5-di-O-caffeoylquinic, chlorogenic, 1,5-di-O-caffeoylquinic acids), and of flavonoids in lesser proportions. Some polyphenols were peculiar to a few species and others were ubiquitous. The two major dicaffeoylquinic acids were identified for the first time in Achillea millefolium and Knautia arvernensis. Colorimetric measurements of phenolic fractions were in good agreement with HPLC analysis (P < 0.01) for all species studied. Thus, on the mountain pasture studied, a cow would be expected to ingest up to 500 g of polyphenols daily, which could affect the quality of animal products. Copyright © 2007 Society of Chemical Industry |
| Databáze: | OpenAIRE |
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