摘要:
A method prepares a sugar solution from cellulose-containing biomass. The method includes step (1): a step of obtaining an endoxylanase hydrolysate by hydrolyzing the cellulose-containing biomass using endoxylanase derived from microorganisms of the Acremonium genus or the Aspergillus genus, step (2): a step of separating the endoxylanase hydrolysate into an endoxylanase hydrolysate solid and an endoxylanase hydrolysate liquid through solid-liquid separation, step (3): a step of obtaining a cellulase hydrolysate by hydrolyzing the endoxylanase hydrolysate solid using cellulase derived from a filamentous fungus, and step (4): a step of filtering the cellulase hydrolysate through an ultrafiltration membrane to recover a sugar solution from the filtrate side and collect an enzyme component from the non-filtrate side.
摘要:
A method of producing a sugar solution includes (1) to (3): (1) preparing a slurry of a cellulose-containing biomass pretreated material and an inactivated cellulose, (2) hydrolyzing the slurry in (1) by adding a filamentous fungus-derived cellulase to the slurry, and (3) separating a hydrolysate in (2) into a solution component and a hydrolysis residue through solid-liquid separation, and filtering the solution component through an ultrafiltration membrane, thereby recovering the filamentous fungus-derived cellulase as a non-filtrate and the sugar solution as a filtrate.
摘要:
Endoglucanase characterized by a decreased degree of activity inhibition by a lignin-derived aromatic compound, and prepared by substituting tryptophan at position 273 in the amino acid sequence of wild-type thermophilic bacterium-derived endoglucanase with an amino acid other than aromatic amino acids.
摘要:
A method of producing a compound originating from a polysaccharide-based biomass includes at least one of a saccharification step that produces a sugar solution containing a monosaccharide and/or an oligosaccharide from a product obtainable by hydrolyzing the polysaccharide-based biomass; a fermentation step that ferments the sugar solution containing the monosaccharide and/or oligosaccharide originating from the polysaccharide-based biomass; and a treatment that removes a fermentation inhibitor with the use of a separation membrane having a glucose removal rate and an isopropyl alcohol removal rate which simultaneously satisfy the following relationships (I) and (II) when a 500 ppm aqueous glucose solution at pH 6.5 at 25° C. and a 500 ppm aqueous isopropyl alcohol solution at pH 6.5 at 25° C. are respectively permeated through the membrane at an operation pressure of 0.5 MPa, prior to the saccharification step and/or in the step prior to the fermentation step: Glucose removal rate≧80% (I) Glucose removal rate−Isopropyl alcohol removal rate≧20% (II).
摘要:
A method of producing a sugar liquid includes: (A) reacting mannanase with a liquid component obtained by hydrolysis treatment of woody biomass to obtain a saccharified liquid; and (B) filtering the saccharified liquid in Step (A) through a microfiltration membrane and/or ultrafiltration membrane to collect a sugar liquid from a permeate side.
摘要:
An apparatus that produces a sugar liquid by a method including hydrolyzing cellulose includes a hydrolysis tank to which a recovered enzyme feed pipe and a fresh enzyme feed pipe are connected; a device for solid-liquid separation of a hydrolysate; a sugar liquid-retaining tank having a water supply pipe that washes an ultrafiltration membrane and/or removes recovered enzyme retained in a circulation pipe; and an ultrafiltration membrane device that separates enzyme and a sugar liquid.
摘要:
A method prepares a sugar solution from cellulose-containing biomass. The method includes step (1): a step of obtaining an endoxylanase hydrolysate by hydrolyzing the cellulose-containing biomass using endoxylanase derived from microorganisms of the Acremonium genus or the Aspergillus genus, step (2): a step of separating the endoxylanase hydrolysate into an endoxylanase hydrolysate solid and an endoxylanase hydrolysate liquid through solid-liquid separation, step (3): a step of obtaining a cellulase hydrolysate by hydrolyzing the endoxylanase hydrolysate solid using cellulase derived from a filamentous fungus, and step (4): a step of filtering the cellulase hydrolysate through an ultrafiltration membrane to recover a sugar solution from the filtrate side and collect an enzyme component from the non-filtrate side.
摘要:
A method of producing a sugar liquid includes: (A) reacting mannanase with a liquid component obtained by hydrolysis treatment of woody biomass to obtain a saccharified liquid; and (B) filtering the saccharified liquid in Step (A) through a microfiltration membrane and/or ultrafiltration membrane to collect a sugar liquid from a permeate side.
摘要:
A method of producing a sugar solution includes (1) to (3): (1) preparing a slurry of a cellulose-containing biomass pretreated material and an inactivated cellulose, (2) hydrolyzing the slurry in (1) by adding a filamentous fungus-derived cellulase to the slurry, and (3) separating a hydrolysate in (2) into a solution component and a hydrolysis residue through solid-liquid separation, and filtering the solution component through an ultrafiltration membrane, thereby recovering the filamentous fungus-derived cellulase as a non-filtrate and the sugar solution as a filtrate.
摘要:
A method of manufacturing coumaramide includes treating cellulose-based biomass with an ammonia-containing treatment agent to obtain ammonia-treated biomass, immersing the ammonia-treated biomass into a solvent containing at least water and eluting coumaramide in the ammonia-treated biomass into the solvent to obtain a coumaramide solution, and precipitating coumaramide in the coumaramide solution as a crystal to obtain a coumaramide crystal.