C - Chemistry – Metallurgy – 07 – H
Patent
C - Chemistry, Metallurgy
07
H
260/234.2
C07H 1/06 (2006.01) C07H 3/02 (2006.01)
Patent
CA 1292988
"PROCESS FOR SEPARATING PSICOSE FROM ANOTHER KETOSE" ABSTRACT OF THE DISCLOSURE Psicose is separated from at least one other ketose in an adsorption step using a type Y zeolite adsorbent having calcium cations at exchangeable cationic sites. After desorption, psicose is recovered in the extract in high purity with the other ketose being concentrated in the raffinate In a preferred mode of operation, the psicose separation is performed with an aqueous feed mixture of monosaccharides containing psicose along with other aldoses and ketoses. The feed is contacted with a calcium-Y type zeolite in two steps. In the first, psicose and fructose are selectively adsorbed to the substantial exclusion from the extract of other aldoses. In the second, psicose is adsorbed from the extract of the first step and recovered in higher purity than the feed. Fructose is recovered substantially psicose-free in high purity in the raffinate.
544233
Chang Chin-Hsiung
Macrae & Co.
Uop Inc.
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