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. (2006): In vitro and in vivo assessment of humic acid as an aflatoxin binder in broiler chickens. Biomin World Nutrition Forum, Vienna (Abstr. 12). Rottinghaus G. E

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humic acids on urease . Eur J Soil Biol 44 : 166 – 171 . 10. Todd , MJ , Hausinger , RP 1989 Competitive inhibitors of Klebsiella aerogenes urease. Mechanisms of interaction with the

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. Prado , AGS , Miranda , BS , Jacintho , GVM . Interaction of indigo carmine dye with silica modified with humic acids at solid/liquid interface . Surf Sci . 2003 ; 542 : 3 276 – 282 . 10.1016/S0039

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.C. , Van Rensburg, C.E.J. , Van Ryssen, J.B.J., Casey, N.H. & Rottinghaus, G.E. (2006): In vitro and in vivo assessment of humic acid as an aflatoxin binder in broiler chickens. Biomin World Nutrition Forum . Vienna (Abstr. 12

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, Airoldi , C 2003 Humic acid–divalent cations interactions . Thermochim Acta 405 2 287 – 292 10.1016/S0040-6031(03)00196-5 . 19. Petrucelli , GC , Meirinho , MA , Macedo , TR , Airoldi

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food supplement containing the active ingredients spirulina protein extract and humic acid and the excipients calcium hydrogen phosphate, magnesium stearate, maize starch, and povidone, is chosen as placebo. The tablets are previously finely powdered in

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.wasman.2006.01.016 . 30. Provenzano , MR , Senesi , N , Miikki , V . Characterization of composts and humic acids from pulp and paper mill biosludges by DSC in association with FT

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apparatus. The solvents were evaporated to 2–3 mL n -hexane under vacuum. The extracts were then combined and desulfurized by using tetrabutylammonium (TBA) sulfite clean-up. Humic acids were removed from the extracts by concentrated H 2 SO 4 (98%). This

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soluble fraction in alkaline mean (humic acid) and by the soluble fulvic acids in acid mean (carbohydrates, amino acids) [ 11 ]. The kinetic thermal degradation of samples in the solid state has been studied, using curves TG/DTG, from the beginning

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humic-acid and ligninsulfonate. Anal. Chem. , 55 , 643–648. Wold S. Partial least-squares methods for spectrofluorimetric analysis of mixtures of humic-acid and ligninsulfonate

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