Process for pretreating colored aqueous sugar solutions to produce a low colored crystallized sugar
US6485574B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Jun 23, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC13B30/021
- WIPO fieldFood chemistry
- WIPO sectorChemistry
Abstract
Process for manufacturing crystallized sugar from an aqueous sugar solution containing colorants, polyvalent cations such as Ca2+ and Mg2+ ions and possibly polyvalent anions, said process comprising the step of submitting said solution to a crystallization procedure to obtain a crystallized sugar, the process being characterized in that, in order to decrease the occlusion of colorants in the crystals of said crystallized sugar, it further comprises the step of treating said solution so as to increase the number of polyvalent anion equivalents such as adding COB− anions with regard to the number of polyvalent cation equivalents in said solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.