Abstract: A method of recovering a sugar by separating a fermentation inhibitor and the sugar from a sugar solution containing the fermentation inhibitor, the method including: bringing the sugar solution containing the fermentation inhibitor into contact with a basic anion exchange resin filled into a column, followed by separation of the fermentation inhibitor and the sugar by a difference in retention time therebetween through use of water as an eluent, and separate recovery of a fraction containing the fermentation inhibitor and a fraction containing the sugar, wherein the basic anion exchange resin is previously treated with a solution containing the fermentation inhibitor.

Abstract: A method of efficiently producing saccharides having glucose as the major component by inexpensively suppressing the non-productive adsorption of the enzyme to lignin is provided. The method of producing saccharides includes: a first step of preparing a water-soluble protein by adding at least any one of an animal protein and a vegetable protein to an aqueous sodium hydroxide solution or an aqueous calcium hydroxide solution to react with each other; a second step of adding the water-soluble protein to a slurry including a biomass; and a third step of producing saccharides having glucose as a major component by adding a degrading enzyme to the slurry for at least any one of a cellulose or a hemicellulose included in the biomass to be degraded by the degrading enzyme simultaneously with addition of the water-soluble protein to the slurry or after addition of the water-soluble protein.

Abstract: A method for producing saccharides according to the present invention includes a step of preparing a slurry by adding an aqueous solution containing a sugar or a sugar solution to biomass so that the slurry has a biomass content of 10 to 30 w/v %, and a step of adding at least one of an enzyme that degrades cellulose and an enzyme that degrades hemicellulose to the slurry containing the biomass to degrade at least one of cellulose and hemicellulose contained in the biomass, thereby producing saccharides containing glucose as a main component.

Abstract: A method of producing saccharides, in which fluidity of the slurry including biomass can be retained; the used amount of the degrading enzyme can be reduced; and high concentration saccharides can be produced, is provided. In addition, a method of producing ethanol, in which high concentration ethanol can produced, is provided. The method of producing saccharides includes the steps of: adding a cellulose degrading enzyme to a slurry including a biomass; and degrading the cellulose included in the biomass by the degrading enzyme to produce saccharide including glucose as a major component. The concentration of the cellulose is retained at 75 g/L or less in a mixed solution including the slurry, the degrading enzyme, and an adsorption inhibitor inhibiting adsorption of the degrading enzyme to a lignin contained in the biomass.

Abstract: A method of efficiently producing saccharides having glucose as the major component by inexpensively suppressing the non-productive adsorption of the enzyme to lignin is provided. The method of producing saccharides includes: a first step of preparing a water-soluble protein by adding at least any one of an animal protein and a vegetable protein to an aqueous sodium hydroxide solution or an aqueous calcium hydroxide solution to react with each other; a second step of adding the water-soluble protein to a slurry including a biomass; and a third step of producing saccharides having glucose as a major component by adding a degrading enzyme to the slurry for at least any one of a cellulose or a hemicellulose included in the biomass to be degraded by the degrading enzyme simultaneously with addition of the water-soluble protein to the slurry or after addition of the water-soluble protein.

Abstract: A method for producing a fermentation-raw-material sugar solution includes a step of saccharifying non-food biomass to obtain a low-concentration-sugar-containing solution, and a step of mixing the low-concentration-sugar-containing solution with a sugar or high-concentration-sugar-containing solution derived from food biomass to obtain a fermentation-raw-material sugar solution.

Abstract: A method for producing saccharides according to the present invention includes a step of preparing a slurry by adding an aqueous solution containing a sugar or a sugar solution to biomass so that the slurry has a biomass content of 10 to 30 w/v %, and a step of adding at least one of an enzyme that degrades cellulose and an enzyme that degrades hemicellulose to the slurry containing the biomass to degrade at least one of cellulose and hemicellulose contained in the biomass, thereby producing saccharides containing glucose as a main component.

Abstract: A biomass pretreatment method includes a first process performed on the biomass so as to improve contact efficiency between the cellulose and/or hemicellulose and the enzymes that degrade the cellulose and/or hemicellulose; and a second process of removing a substance containing at least an organic acid from the biomass subjected to the first process, the second process including placing the biomass subjected to the first process into a container that has a vent communicating with outside and heating the biomass subjected to the first process at a temperature equal to or lower than a boiling temperature of water by using water while leaving the vent constantly open.

Abstract: A method for producing saccharides containing glucose as a main component is described, including degrading cellulose and/or hemicellulose with a cellulase, wherein an additive containing a protein and an amino acid and/or a yeast lysate solution is added to the cellulose and/or hemicellulose and the cellulase is used to cause an enzymatic saccharification reaction of saccharifying the cellulose and/or hemicellulose.

Abstract: A method of producing saccharides containing glucose as the major constituent by degrading at least one selected from the group consisting of cellulose and hemicellulose with a cellulose saccharifying enzyme is provided. The method includes the steps of: mixing a cellulose material and a solution containing cellulose saccharifying enzyme to prepare a mixture; and saccharifying the cellulose material with the saccharifying enzyme. A gross energy density Y (W/m3) subjected to the mixture and a substrate concentration X (w/v%) of the cellulose material to the enzyme solution satisfy a formula (1) below during the step of saccharifying. Y??0.0125X2+1.195X+23.

Abstract: Provided is a method for producing saccharides containing glucose as the main components which can increase the generated amount of saccharides containing glucose as the main components even when an enzymatic saccharification reaction is performed with a small amount of enzyme. A method for producing saccharides containing glucose as the main components is provided which includes mixing biomass containing cellulose and/or hemicellulose and an aqueous enzyme solution, and then performing an enzymatic saccharification reaction with an enzyme contained in the aqueous enzyme solution while maintaining the state where the mixture of the biomass containing cellulose and/or hemicellulose and the aqueous enzyme solution is allowed to stand still in a reaction vessel.

Abstract: A method of producing saccharides containing glucose as the major constituent by degrading at least one selected from the group consisting of cellulose and hemicellulose with a cellulose saccharifying enzyme is provided. The method includes the steps of: mixing a cellulose material and a solution containing cellulose saccharifying enzyme to prepare a mixture; and saccharifying the cellulose material with the saccharifying enzyme. A gross energy density Y (W/m3) subjected to the mixture and a substrate concentration X (w/v%) of the cellulose material to the enzyme solution satisfy a formula (1) below during the step of saccharifying. Y??0.0125X2+1.195X+23.

Abstract: To achieve efficient use of enzyme in obtaining a sugar solution through a reaction of the enzyme and biomass containing cellulose. In obtaining a sugar solution through a reaction of enzyme and biomass containing cellulose, the biomass and the enzyme are caused to react in a first reaction tank, whereby a sugar solution in which the enzyme is dispersed and a residue containing the unreached biomass adsorbing the enzyme are generated, these sugar solution and residue are next separated, a pH adjusting solution is supplied to the residue in a second reaction tank to prepare a dilute solution whose sugar concentration is lower than that of the sugar solution, and in this dilute solution, a sugar solution is generated through a reaction between the residue and the enzyme adsorbed to the residue.

Abstract: This monosaccharide production method is a method for producing monosaccharides from biomass having a first step 3 in which a raw material biomass is pretreated in 65 to 85 (w/w) % sulfuric acid at a temperature of 30 to 70° C., and a second step 4 in which the first step treatment product pretreated in the first step is subjected to saccharification treatment in 20 to 60 (w/w)% sulfuric acid at a temperature of 40 to 100° C.