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Polyphenolic composition of a permanent pasture: Variations related to the period of harvesting
- Source :
- 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
- Publication Year :
- 2007
- Publisher :
- HAL CCSD, 2007.
-
Abstract
- 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
- Subjects :
- 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
Subjects
Details
- Language :
- English
- ISSN :
- 00225142 and 10970010
- Database :
- OpenAIRE
- Journal :
- 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
- Accession number :
- edsair.doi.dedup.....4361a7a1f7b5f7d69786e2c5c3e603e3