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SOLUBLE COMPLEXES OF COPPER AND ZINC IN WHISKEY DISTILLERY SPENT WASH
Author(s) -
Quinn J. P.,
Barker T. W.,
Marchant R.
Publication year - 1982
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.1982.tb04079.x
Subject(s) - copper , zinc , chemistry , ninhydrin , hexose , fraction (chemistry) , size exclusion chromatography , chromatography , filtration (mathematics) , carbohydrate , nuclear chemistry , organic chemistry , biochemistry , amino acid , enzyme , statistics , mathematics
The capacity of samples of malt whiskey distillery spent wash to complex added ionic copper was examined, and copper binding capacities of up to 3250 mg litre −1 found. A correlation between the copper binding capacity and the total hexose content of spent wash was demonstrated. Gel filtration studies indicated that the copper was probably bound to an organic fraction containing both carbohydrate and ninhydrin positive material, whereas zinc appeared to be complexed by a lower molecular weight fraction containing both hexose and phenolic moieties.