Liquid sugar from raw granulated cane sugar purifying process

Abstract

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.

Dependencies are inferred from the claim text.