Method of producing sugars using strong acid hydrolysis
July 2, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProcess for the acid hydrolysis of carbohydrate polymers and the continuous fermentation of the sugars _obtained therefrom to provide ethanol Conversion of cellulosic fibers to mono-sugars and lignin Acid hydrolysis of biomass for alcohol production Process for production of xylitol from lignocellulosic raw materials Process for the production of fermentable sugars from biomass Method for recovering xylose Concentrated sulfuric acid process for converting lignocellulosic materials to sugars Method of producing sugars using strong acid hydrolysis of cellulosic and hemicellulosic materials Strong acid hydrolysis of cellulosic and hemicellulosic materials Patent #: 5597714 InventorsAssigneeApplicationNo. 674405 filed on 07/02/1996US Classes:435/100, Disaccharide127/1, Hydrolyzing127/36, Hydrolysis of carbohydrates127/37, Cellulose material127/46.2, Involving ion manipulation, e.g., ion exchange, etc.127/46.3, For ion exclusion210/665, By making an insoluble substance or accreting suspended constituents210/673, Utilizing gas, water, or chemical oxidizing or reducing agent423/335, Silica423/339, By precipitating435/99, Produced by the action of a carbohydrase (e.g., maltose by the action of alpha amylase on starch, etc.)435/105, Monosaccharide435/161, Ethanol435/168, Preparing element or inorganic compound except carbon dioxide435/171, Using fungi435/803, PHYSICAL RECOVERY METHODS (E.G., CHROMATOGRAPHY, GRINDING)435/911, Using fungi435/921, Candida536/1.11, Carbohydrates or derivatives536/124, Processes536/127Purification or recoveryExaminersPrimary: Lilling, Herbert J.Attorney, Agent or FirmForeign Patent References
International ClassesC13K 001/02C12P 019/12 C12P 019/02 AbstractA economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica and silicates present in the biomass can then be removed for further processing. The remaining solids are then subjected to a second decrystallization if necessary and a second hydrolyzation to optimize the sugar yields.Other References
Field of SearchProduced by the action of a carbohydrase (e.g., maltose by the action of alpha amylase on starch, etc.)Disaccharide Monosaccharide Ethanol Preparing element or inorganic compound except carbon dioxide Using fungi PHYSICAL RECOVERY METHODS (E.G., CHROMATOGRAPHY, GRINDING) Using fungi Candida Saccharomyces lactis Carbohydrates or derivatives Processes Purification or recovery Hydrolyzing Hydrolysis of carbohydrates Cellulose material Involving ion manipulation, e.g., ion exchange, etc. For ion exclusion By making an insoluble substance or accreting suspended constituents Utilizing gas, water, or chemical oxidizing or reducing agent Silica By precipitating |
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