Results 171 to 180 of about 3,204 (202)
Biosorption of Pb(II) ions by modified quebracho tannin resin
Journal of Hazardous Materials, 2009 In this study, the effect of temperature, pH and initial metal concentration on Pb(II) biosorption on modified quebracho tannin resin (QTR) was investigated. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were used to investigate QTR structure and morphology.
Meral Yurtsever, İayhan Sengİl
exaly +5 more sources
Intoxication of Sheep with Quebracho Tannin Extract [PDF]
Journal of Comparative Pathology, 2003 This experiment was carried out to study the toxicity of quebracho tannin extract (containing 760 g of condensed tannins [CTs] per kg), with the aim of validating its use as a feed additive for improving the digestive utilization of protein-rich feeds.
Gonzalo Hervas +2 more
exaly +4 more sources
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Structure and properties of rigid foams derived from quebracho tannin
Materials & Design, 2014The first highly porous organic rigid foams based on condensed tannin extracted from quebracho tree (Schinopsis sp.) are reported. Samples having different densities have been prepared and characterised. Their porous structure and physical properties have been compared with those of foams prepared in similar conditions but based on mimosa or pine ...
Alicia Martinez de Yuso +2 more
exaly +2 more sources
Intake and performance of growing lambs supplemented with quebracho tannins
Tropical Animal Health and Production, 2022Tannins can modulate rumen fermentation and increase the bypass protein; however, the use of different doses and sources of condensed tannins (CT) in animal diets has divergent results. The aim of this study was to evaluate the effect of different levels of dietary quebracho extract inclusion, as a CT source, in the performance and carcass ...
Sthefany Kamile, Dos Santos +4 more
openaire +2 more sources
Biofouling, 2007 Current antifouling coatings are based on toxic compounds that can be harmful to the natural environment. A promising alternative to these compounds is the use of natural products that are non-toxic, but have antifouling properties. Tannins are natural, water-soluble, complex polyphenolic substances, which precipitate proteins and have anticorrosive ...
Miriam Pérez +2 more
exaly +4 more sources
Purified tannins from quebracho colorado
Phytochemistry, 1994Abstract The acetone-water solubles from quebracho tannin extract were separated into three fractions of different molecular weights. The purified tannins yielded sugars and gallic acid upon acid hydrolysis, and lignin derived degradation products upon KMnO 4 oxidation.
W. Streit, D. Fengel
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Effect of quebracho condensed tannin extract on fecal gas flux in steers
Journal of Environmental Quality, 2020AbstractNaturally occurring gaseous by‐products of ruminant production—carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O)—can negatively affect the environment. Along with enteric fermentation, manure on pasture is among the most significant contributors to non‐CO2 emissions.
A. B. Norris +5 more
openaire +2 more sources