Concentration of Isoflavones and Other Phenolics in the Aerial Parts of  <i>Trifolium</i> Species

Oleszek, Wiesław; Stochmal, Anna; Janda, Bogdan

doi:10.1021/jf072024w

Cited by 75 publications

(86 citation statements)

References 12 publications

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“…Paddock F vegetation had a higher specific contribution of PSM-rich species than T (42-46% vs. 29-27%) because of the abundance of species from the Compositae, Rosaceae, Polygonaceae, and Fabaceae families, all generally rich in either volatiles [38] or polyphenols [23,31]. Paddock T vegetation was dominated by Trifolium alpinum, a species from the Fabaceae family known to be rich in polyphenols [39].…”

Section: Vegetation Composition Foragementioning

confidence: 99%

“…One pasture was largely dominated by Trifolium alpinum, from a genus rich in polyphenolic compounds [39]. The other pasture was rich both in high-forage quality species (Festuca nigrescens, Phleum alpinum, and Trifolium repens) and in other species, such as Alchemilla xanthochlora and Polygonum bistorta, belonging to families with high PSM content [18,31,38].…”

Section: Introductionmentioning

confidence: 99%

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Variation in fatty acid composition of milk and cheese from cows grazed on two alpine pastures

Falchero

Lombardi

Gorlier

et al. 2010

Dairy Sci. Technol.

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-The aim of this study was to verify the variation in fatty acid composition of milk, and derived cheese, when dairy cows were grazed on different alpine vegetation types. An experimental design was developed to highlight the effect of pasture composition on milk and cheese fatty acid profiles, thereby mitigating the other variables (altitude, animal physiology, and animal management). Two dairy cow groups were grazed on two different key alpine vegetation types (Type 1: Trifolium alpinum, Nardus stricta, and Carex sempervirens and Type 2: Festuca nigrescens, Alchemilla xanthochlora, and Phleum alpinum). Bulk milk was collected separately from each group for 6 days, from which 12 artisanal cheeses were produced and ripened for 60 days. The fatty acid (FA) composition of the bulk milks and cheeses varied with the type of vegetation. Milk and cheese derived from cows that were grazed on Trifolium alpinum-dominated pastures were richer in long-chain FAs, unsaturated and monounsaturated FAs (particularly oleic acid), and odd-chain saturated FAs (such as C15:0 pentadecanoic and C17:0 heptadecanoic acids) while those from Festuca nigrescens pastures contained more short-and medium-chain FAs, saturated FAs, and α-linolenic acid. Furthermore, our results showed that in alpine grazing systems, milk and cheese FA profiles changed when cows were grazed on pastures with a different botanical composition, probably due to differences in forage quality and concentration of bioactive secondary metabolites. These results have to be taken into account for the valorization of the nutritional characteristics and for the traceability of grass-fed dairy products.fatty acid / milk / cheese / grassland biodiversity / alpine pasture / grazing acide gras / lait / fromage / biodiversité des pâtures / pâture alpine / pâturage

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Section: Vegetation Composition Foragementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variation in fatty acid composition of milk and cheese from cows grazed on two alpine pastures

Falchero

Lombardi

Gorlier

et al. 2010

Dairy Sci. Technol.

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“…The plants were chosen on the basis of results from our previous studies, recommendations of traditional medicine, agricultural significance, and available data on their promising chemical profiles. A general analysis of the phytochemical profiles of 57 Trifolium species, reported by Oleszek et al (2007), indicated T. scabrum as one of the three plants containing the highest amount of isoflavones (7-9% of the dry matter). Concentrations of isoflavones in other species were higher or comparable with the amounts occurring in T. pratense (1-4% of the dry matter), whereas T. pallidum was classified to the cluster of the species rich in clovamides.…”

Section: Introductionmentioning

confidence: 99%

Free radical scavenging actions of threeTrifoliumspecies in the protection of blood plasma antioxidant capacityin vitro

Kołodziejczyk-Czepas

Nowak

Moniuszko-Szajwaj

et al. 2015

Pharmaceutical Biology

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Context: Three clover [Trifolium L. (Leguminosae)] species were selected on the basis of data from traditional medicine, phytochemical profiles, and agricultural significance. Objective: The in vitro evaluations of free radical scavenging properties, ferric reducing abilities, and antioxidant effects of extracts from T. pratense L. (crude extract and phenolic fraction), T. pallidum L., and T. scabrum L. (phenolic fractions) were performed. Materials and methods: Activities of the Trifolium extracts were determined at their final concentrations of 1.5-50 mg/ml. Free radical scavenging properties of methanol extract solutions were estimated by the reduction of DPPH and ABTS radicals. Measurements of the total antioxidant capacity (TAC) were carried out to assess the antioxidant activities of the extracts in human blood plasma under conditions of oxidative stress, induced by 200 mM peroxynitrite. Results: The phenolic fraction of T. pratense displayed the strongest ABTS and DPPH radical scavenging effects (EC 50 value of 21.69 and 12.27 mg/ml, respectively). The EC 50 value for T. pallidum extract attained 29.77 and 30.06 mg/ml. The two remaining extracts were less potent scavengers (EC 50 value higher than 50 mg/ml). Similar differences were obtained during evaluation of the ferric reducing abilities. Analysis of antioxidant properties of the extracts in blood plasma did not provide such evident differences in their actions, however, it indicated that the T. pratense phenolic fraction displayed the strongest effect. Conclusions: The examined Trifolium extracts partly protected blood plasma and enhanced its non-enzymatic antioxidant defense against harmful action of peroxynitrite in vitro.

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“…The HR-MALDI/TOF mass spectrum of 2 supported a molecular formula of C 41 H 64 O 15 . The ESI-MS mass spectrum in the negative ion mode showed the major ion peak at m/z 795.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 87%

Triterpene Saponins from the Aerial Parts of Trifolium medium L. var.sarosiense

Pawelec

Jędrejek

Kowalczyk

et al. 2013

J. Agric. Food Chem.

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Seven previously unreported triterpene glycosides (1−7) were isolated from methanol extract of the aerial parts of Trifolium medium var. sarosiense (zigzag clover). Their structures were established by the extensive use of 1D and 2D NMR experiments along with ESI-MS and HRMS analyses. Compounds 1−7 are oleanane derivatives characterized by the presence of a keto group at C-22 of an aglycone and a primary alcoholic function at C-24 and differing functions at C-30. Among these, compounds 1−3 and 6 showed a secondary alcoholic function at C-11, which is methoxylated in compounds 4 and 7.Compound 5 was shown to possess a known aglycone, wistariasapogenol A; however, it is described here for the first time as a saponin constituent of the Trifolium genus. Some aspects of taxonomic classification of zigzag clover are also discussed.

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Concentration of Isoflavones and Other Phenolics in the Aerial Parts of Trifolium Species

Cited by 75 publications

References 12 publications

Variation in fatty acid composition of milk and cheese from cows grazed on two alpine pastures

Variation in fatty acid composition of milk and cheese from cows grazed on two alpine pastures

Free radical scavenging actions of threeTrifoliumspecies in the protection of blood plasma antioxidant capacityin vitro

Triterpene Saponins from the Aerial Parts of Trifolium medium L. var.sarosiense

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