2017
DOI: 10.1021/acs.jafc.6b05830
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Condensed Tannins in the Gastrointestinal Tract of Cattle after Sainfoin (Onobrychis viciifolia) Intake and Their Possible Relationship with Anthelmintic Effects

Abstract: Condensed tannins' (CTs) fate along the digestive tract of ruminants may account for the variable efficacy of CTs against gastrointestinal nematodes. We analyzed CTs in the digesta of cattle fed sainfoin. With the acetone-butanol-HCl assay, the total CTs concentrations in the digesta were close to those in the diets (6.3 and 1.5% of DM in experiments 1 and 2, respectively); thus, CTs remained potentially largely undegraded/unabsorbed. With the thiolysis assay, CTs concentration was much higher in the abomasum … Show more

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Cited by 29 publications
(44 citation statements)
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“…According to results from the HCl-butanol-acetone or thiolysis assays, fermentation can reduce "apparent" CT concentrations by 30 or 85%, respectively, in silages (Mena et al, 2015;Ramsay et al, 2015) and the gut (Desrues et al, 2017;Quijada et al, 2018). According to results from the HCl-butanol-acetone or thiolysis assays, fermentation can reduce "apparent" CT concentrations by 30 or 85%, respectively, in silages (Mena et al, 2015;Ramsay et al, 2015) and the gut (Desrues et al, 2017;Quijada et al, 2018).…”
Section: Effects Of Fermentation On Condensed Tannin Activitymentioning
confidence: 99%
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“…According to results from the HCl-butanol-acetone or thiolysis assays, fermentation can reduce "apparent" CT concentrations by 30 or 85%, respectively, in silages (Mena et al, 2015;Ramsay et al, 2015) and the gut (Desrues et al, 2017;Quijada et al, 2018). According to results from the HCl-butanol-acetone or thiolysis assays, fermentation can reduce "apparent" CT concentrations by 30 or 85%, respectively, in silages (Mena et al, 2015;Ramsay et al, 2015) and the gut (Desrues et al, 2017;Quijada et al, 2018).…”
Section: Effects Of Fermentation On Condensed Tannin Activitymentioning
confidence: 99%
“…(Gea et al, 2011;Pérez-Jiménez and Lluís Torres 2011;Cheynier et al, 2015;Hixson et al, 2016;our unpublished data). Low values have been linked to oxidative processes affecting reaction yields (Hixson et al, 2015;Klongsiriwet, 2016;Brillouet et al, 2017;Desrues et al, 2017). Thiolysis or phloroglucinolysis (analytical degradation of CTs with thiols or phloroglucinol) can be used to determine the composition of CTs by depolymerization, enabling characterization of the flavan-3-ol subunits (Zeller, 2019).…”
Section: Progress In Tannin Analysismentioning
confidence: 99%
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