Abstract: The process according to the invention, for producing sugar products from fruits, comprising the steps of: i) demineralizing and decolorizing a fruit juice so as to bring its solid content to comprise from 99% wt to 99.99% wt of a mixture of saccharides, alcohols and flavonoids; iii) separating by chromatography the demineralized and decolorized fruit juice so as to obtain a glucose-enriched fraction or a fructose-enriched fraction from the fruit juice. The solid content of the glucose-enriched fraction comprises at least from 70% wt to 99.99% wt of glucose; the solid content of the fructose-enriched fraction comprises from 70% wt to 99.99% wt of fructose. The low content of anions and cations of the fruit juice to be is treated by chromatography greatly increase the yield of the chromatographic treatment and the purity of the glucose- and fructose-enriched fractions obtained through it.

Abstract: A process for producing sugar products from grapes includes treating a solution of liquid rectified concentrated must by chromatography, to separate at least one sugar contained in it. A plant for producing sugar products from grapes comprises a plurality of columns connected together in series, each column implementing in succession all steps of the chromatographic process, but implementing steps of the process which are different from the other columns. A recirculation step is provided in passing from one step to the next.

Abstract: The process according to the invention, for producing sugar products from fruits, comprising the steps of: i) demineralizing and decolorizing a fruit juice so as to bring its solid content to comprise from 99% wt to 99.99% wt of a mixture of saccharides, alcohols and flavonoids; iii) separating by chromatography the demineralized and decolorized fruit juice so as to obtain a glucose-enriched fraction or a fructose-enriched fraction from the fruit juice. The solid content of the glucose-enriched fraction comprises at least from 70% wt to 99.99% wt of glucose; the solid content of the fructose-enriched fraction comprises from 70% wt to 99.99% wt of fructose. The low content of anions and cations of the fruit juice to be is treated by chromatography greatly increase the yield of the chromatographic treatment and the purity of the glucose- and fructose-enriched fractions obtained through it.