Direct production of white sugar from sugarcane juice or sugar beet juice

William Baumgartner, Benedict, Dirk, Rein, Peter W.  |  6/13/2017 9:07:29 PM

Bento, Luis R. S. M.; Ellis, Bruce M.; Rein, Peter W.
Patent Status: Issued
Issue Date: 5/06/2007
Patent Number: 7,226,511

Abstract:
An economical process is disclosed for the direct production of white sugar from clarified juice. Juice from a cane sugar mill, or sugar beet juice, is first contacted with hydrogen peroxide, before passing through granular activated carbon. The juice is then passed through cationic and anionic resins to remove inorganic compounds, colorants, and other impurities. Then the juice may be concentrated and sugar crystallized. White sugar is produced directly, without the need for an intermediate raw sugar crystallization.

Description:
This invention pertains to the direct production of white sugar from sugarcane juice or sugar beet juice. Although the description below refers primarily to production from sugarcane juice, the method of this invention may also be used in the production of white sugar from sugar beet juice.

We have discovered an economical process for the direct production of white sugar from clarified juice. Juice from a cane sugar mill, or sugar beet juice, is first contacted with an oxidizing agent such as hydrogen peroxide or ozone, preferably hydrogen peroxide, before passing through granular activated carbon (GAC). After passage through GAC, the juice is passed through cationic and anionic resins to remove inorganic compounds, colorants, and other impurities. Then the juice may be concentrated and sugar crystallized, for example using means that are otherwise conventional in the art at this stage. White sugar is produced directly, without the need for an intermediate raw sugar crystallization. It is not necessary to employ membrane filtration, carbonatation, or phosphatation at any step of the process in order to obtain excellent results.

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