Production of invert syrup from sugarcane juice using immobilized invertase
AssigneeInstituto Technologico y de Estudios Superiores de Monterrey
InventorsSergio R. Serna-Saldivar, Marco A. Rito-Palomares
Life of this patent
Estimating the term…
Abstract
This invention is directed to a novel process in which raw sugarcane juice is first refined through a number of steps and then bioenzymatically converted into refined invert syrup or glucose-fructose concentrated solution using a reactor packed with immobilized invertase. The refining steps preferably include a first filtration (particle filtration or microfiltration) followed by a second filtration (microfiltration or ultrafiltration) and then at least one pass through a column packed with an anionic exchange resin. The refined sugarcane juice can be optionally concentrated and/or pasteurized before passing through a reactor packed with immobilized invertase to convert sucrose to glucose-fructose.
Claims39
A method for producing an invert syrup product from raw sugarcane juice comprising the steps of:
- (i) subjecting sugar cane juice to a filtration process having at least two filtration stages, a first stage and a finer stage, to remove contaminants while substantially retaining sugars present in the juice and a pasteurization stage to pasteurize and evaporatively concentrate said sugar juice by subjecting said sugar juice to a pasteurizing temperature between about 61.5° C. and about 72° C. for a time sufficient to pasteurize and simultaneously concentrate said sugar cane juice, thereby producing a concentrated filtered sugar cane juice;
- (ii) subjecting the concentrated filtered sugar cane juice to anion exchange to remove soluble contaminants from said concentrated filtered sugar cane juice which were not removed in the filtration process, thereby producing an anion exchange-treated sugar cane juice;
- (iii) contacting said anion exchange-treated sugarcane juice with an immobilized invertase enzyme to convert at least 90% of sucrose contained in said treated juice to a mixture of glucose and fructose and thereby to produce said invert syrup product.
A method for producing an invert syrup product from raw sugarcane juice comprising the steps of:
- (a) subjecting sugar cane juice to a first filtration to remove a first fraction of solid contaminants from said juice thereby producing a first filtered sugarcane juice;
- (b) subjecting the first filtered sugar cane juice to finer filtration to remove a second fraction of solid contaminants from said first filtered juice and a first fraction of soluble contaminants from said first filtered juice and thereby to produce a finer filtered sugarcane juice;
- (c) pasteurizing the finer filtered sugarcane juice by subjecting it to a pasteurizing temperature between about 61.5° C. and about 72° C. for a time sufficient to pasteurize and simultaneously evaporatively concentrate said finer filtered sugarcane juice and thereby producing a concentrated finer filtered sugar cane juice;
- (d) subjecting the concentrated finer filtered sugar cane juice to anion exchange, to remove a second fraction of soluble contaminants from said concentrated finer filtered sugar cane juice, thereby producing an anion exchange-treated sugar cane juice;
- (e) contacting said anion exchange-treated sugarcane juice with an immobilized invertase enzyme to convert at least 90% of sucrose contained in said treated juice to a mixture of glucose and fructose and thereby to produce said invert syrup product.
A method for producing an invert syrup product from raw sugarcane juice comprising the steps of:
- (a) subjecting sugar cane juice to a first filtration to remove a first fraction of solid contaminants from said juice thereby producing a first filtered sugarcane juice;
- (b) evaporatively concentrating the first filtered sugarcane juice to the range of 35° to 55° Brix at a pasteurizing temperature between about 61.5° and about 72° C. for a time sufficient to pasteurize said first filtered sugarcane juice and thereby producing a concentrated filtered sugarcane juice;
- (c) subjecting the concentrated filtered sugarcane juice to finer filtration to remove a second fraction of solid contaminants from said concentrated filtered sugarcane juice and a first fraction of soluble contaminants from said concentrated filtered sugarcane juice and thereby to produce a finer filtered sugarcane juice;
- (d) passing the finer filtered sugar cane juice through an anion exchange column to remove a second fraction of soluble contaminants from said finer filtered sugar cane juice, thereby producing an anion exchange-treated sugar cane juice;
- (e) contacting said anion exchange-treated sugarcane juice with an immobilized invertase enzyme to convert at least 90% of sucrose contained in said treated juice to a mixture of glucose and fructose and thereby to produce said invert syrup product.
Dependencies are inferred from the claim text.