C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
195/139, 260/227
C12P 19/02 (2006.01) C13K 3/00 (2006.01) C13K 11/00 (2006.01)
Patent
CA 1146102
ABSTRACT OF THE DISCLOSURE In the disclosed process for obtaining fructose solutions of solid fructose, a raw material containing sucrose and/of similar fructofuranosides is hydrolyzed to fructose and glucose and treated with a calcium base (e.g. calcium oxide of hydroxide) to precipitate calcium sugar complexes, The precipitate is slurried in water and then treated with phosphoric acid to liberate (e.g. at a pH of 5.5 to 9) a fructose solution of high purity (i.e. de-complex the calcium-fructose complex), with precipitation of useful calcium phosphate salt. Phosphoric acid has been found to have significant advantages over carbonic acid of carbon dioxide as the fructose-liberating (de-complexing) agents, e.g. better yields and more useful by-products. solid fructose can be obtained from the fructose solution in a known manner. The filtrate from the calcium sugar complexing step can be acidified to yield stable, useful, fructose-depleted by-products.
362207
Bichsel Stanley E.
Sandre Andrew M.
Wang Yueh
American Crystal Sugar Company
Ridout & Maybee Llp
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