Chemical speciation of aluminium in beers

Abstract

Details of analyses of a range of lagers for aluminium and for silica are presented. These permit an estimation of the total levels of aluminium as beer is diluted by saliva and intestinal fluids. These data are combined with databases of formation constants and solubility products and the MINEIR speciation program to calculate the chemical speciation of aluminium from beer through to excretion. Bioavailable species are assumed to be [Al citrate]0 and/or [Al phosphate]0 but other than a noticeable presence in the small intestine-from which uptake is limited there is not a significant species concentration. With normal kidney action any small traces entering the blood are rapidly cleared. © 1995 Taylor and Francis Group, LLC.