Method of purifying sugar juice prepared by extraction of a sugar beet material
AssigneeAktieselskabet de Danske Sukkerfabrikker
InventorsRud F. Madsen, Werner K. Nielsen, Steen Kristensen
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Abstract
Method of purifying sugar juice which has been prepared by extraction of a sugar beet material comprising mechanically separating undissolved components, chemically treating the juice to convert low molecular non-sugars into higher molecular compounds and to convert non-soluble compounds into soluble compounds and ultrafiltering the sugar juice thus obtained to separate high molecular components therefrom, thus obtaining a purified sugar juice which is suitable for the manufacture of crystalline sugar of a higher quality than conventionally purified sugar juice.
Claims14
A method of purifying sugar juice which has been extracted from a sugar beet material, said method comprising the steps of (a) filtering the sugar juice to remove undissolved components therefrom, (b) adding to the filtered sugar juice obtained in step (a) a chemical selected from the group consisting of oxidants, complexing agents and mixtures thereof in an amount sufficient to convert low molecular weight colored components in the filtered sugar juice into compounds of a molecular weight sufficiently high that they can be separated from the filtered sugar juice by ultrafiltration, and (c) ultrafiltering the chemically treated sugar juice obtained in step (b) to provide a retentate containing the high molecular weight compounds and a permeate in the form of a purified sugar juice concentrate.
Dependencies are inferred from the claim text.