Liquid sugar from raw granulated cane sugar purifying process

Details Liquid sugar from raw granulated cane sugar purifying process Liquid sugar from raw granulated cane sugar purifying process

C - Chemistry, Metallurgy

13

B

C13B 20/14 (2011.01) C13B 10/00 (2011.01) C13B 10/12 (2011.01) C13B 10/14 (2011.01) C13B 50/00 (2011.01) A23L 3/28 (2006.01)

Patent

CA 2720496

This invention refers to a process for purifying sugar syrup, usually called liquid sugar, prepared with raw granulated cane sugar, in order to obtain a product called purified liquid sugar, with a degree of purity, referred to the content of ashes and color, similar or greater that the purity of a syrup prepared from refined granulated cane sugar, which is equivalent to a content of ICUMSA conductimetric ashes below 0.04% and a color of less than 45 ICUMSA units. The increase in direct reducing sugars content in the product is less than 0.2% with respect to the content of reducing sugars present in raw granulated cane sugar used as raw material for this process, and the pH is kept in the range of 6.0 to 7.5. The process consists of dissolving raw granulated sugar in order to obtain a syrup, filtering, primary bleaching by ion exchange with strong base anionic type resins, demineralizing and complementary bleaching by ion exchange with cationic- and anionic-type resins packed in a mixed bed column, polishing of the syrup by contact with an adsorbent powder material and filtering, and treatment with ultra violet rays.

La presente invención se refiere a un proceso de purificación de jarabe de azúcar, denominado comúnmente azúcar liquida, preparado con azúcar cruda granulada de caña, para obtener un producto denominado azúcar liquida purificada, con un grado de pureza, referida al contenido de cenizas y color, similar o mayor que la pureza de un jarabe preparado a partir de azúcar refinada granulada de caña, lo que equivale a un contenido de cenizas conductimétricas ICUMSA menor a 0.04 % y un color menor a 45 unidades ICUMSA. El incremento en el contenido de azúcares reductores directos en el producto, es menor a 0.2 % respecto al contenido de azúcares reductores presentes en el azúcar cruda granulada de caña utilizada como materia prima para este proceso, y el pH se mantiene en el rango de 6.0 a 7.5. El proceso consiste en la disolución del azúcar cruda granulada para obtener un jarabe, filtración, decoloración primaria por intercambio iónico con resinas del tipo aniónica base fuerte, desmineralización y decoloración complementaria por intercambio iónico con resinas del tipo catiónicas y aniónicas empacadas en columna de lecho mixto, pulido del jarabe por contacto con un material adsorbente en polvo y filtración, y tratamiento con rayos ultravioleta.

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