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US 4,230,802 AGranted
Unrefined glucose syrup as substrate by glucose isomerizing enzyme in producing fructose from glucose
AssigneeAnheuser-Busch, Incorporated
InventorsIrving Ehrenthal, Louis F. Slapshak, Jagdish Rajpara
Life of this patent
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Abstract
This application concerns a method of preparing high fructose syrups from unrefined high glucose syrups (produced by an acid-enzyme or enzyme-enzyme conversion) by treating the substrate with glucose isomerizing enzyme without the addition of cobalt and/or magnesium salts.
Claims7
A process for converting glucose to fructose comprising the steps of:
- A. adding to a refined high glucose substrate, a glucose isomerizing enzyme and at least about 0.1% by weight based on the weight of dry solids of the component of starch conversion mud which comprises fatty acids, esterified fatty acids, coagulated proteins, and hemi-cellulose, said refined substrate containing more than about 90% glucose and being free from extraneously added cobalt salt,
- B. continuing the conversion without adding any extraneous cobalt salt, and
- C. recovering a glucose-fructose syrup which is free from extraneously added cobalt salt and which contains at least 30% fructose.
A process for converting glucose to fructose comprising the steps of:
- A. adding glucose isomerizing enzyme to a high glucose substrate, which substrate comprises more than about 90% glucose and at least about 0.1% by weight on a dry solids basis of the component of starch conversion mud which comprises fatty acids, esterified fatty acids, coagulated proteins, and hemi-celluloses, said substrate being free from extraneously added cobalt salt and extraneously added magnesium salt,
- B. continuing the conversion without adding extraneous cobalt salt or extraneous magnesium salt, and
- C. recovering a glucose-fructose syrup which is free from extraneously added cobalt salt and extraneously added magnesium salt, and which contains at least 30% fructose.
A process for converting glucose to fructose comprising the steps of:
- A. Refining a high glucose substrate, which substrate comprises more than about 90% glucose and is free from extraneously added cobalt salt,
- B. Adding glucose isomerizing enzyme and at least about 0.1% by weight on a dry solids basis of a component of starch conversion mud which component comprises fatty acids, esterified fatty acids, coagulated proteins, and hemi-celluloses to said substrate,
- C. Continuing the conversion without adding any extraneous cobalt salt, and
- D. Recovering a glucose-fructose syrup which is free from extraneously added cobalt salt and which contains at least 30% fructose.
1 more element
A process for converting glucose to fructose comprising the steps of:
- A. Refining a high glucose substrate, which substrate comprises more than about 90% glucose and is free from extraneously added cobalt salt,
- B. Adding glucose isomerizing enzyme and at least about 0.1% by weight on a dry solids basis of an extract of starch conversion mud which comprises fatty acids, esterified fatty acids, coagulated proteins, and hemi-celluloses to said substrate, said extract having been derived by extracting starch conversion mud with a solvent that dissolves fat,
- C. Continuing the conversion without adding any extraneous cobalt salt, and
- D. Recovering a glucose-fructose syrup which is free from extraneously added cobalt salt and which contains at least 30% fructose.
1 more element
A process for converting glucose to fructose comprising the steps of:
- A. Adding glucose isomerizing enzyme derived from organisms of the genus Actinoplanes to a high glucose substrate, which substrate comprises more than about 90% glucose and at least about 0.1% by weight on a dry solids basis of a component of starch conversion mud which component comprises fatty acids, esterified fatty acids, coagulated proteins, and hemi-celluloses said substrate being free from extraneously added cobalt salt,
- B. Continuing the isomerization at a temperature of about 40.degree. to about 90.degree. C. and a pH of about 5.5 to about 9 without adding any extraneous cobalt salt, and
- C. Recovering a glucose-fructose syrup which is free from extraneously added cobalt salt and which contains at least 30% fructose.
A process for converting glucose to fructose comprising the steps of:
- A. Adding glucose isomerizing enzyme and at least about 0.1% of a component of starch conversion mud which component comprises fatty acids, esterified fatty acids, coagulated proteins, and hemi-celluloses to a refined substrate containing more than about 90% glucose and which is free from extraneously added cobalt and magnesium salts,
- B. Continuing the conversion without adding any extraneous cobalt or magnesium salts, and
- C. Recovering a glucose-fructose syrup which is free from extraneously added cobalt and magnesium salts and which contains at least 30% fructose.
Dependencies are inferred from the claim text.