Abstract:
Provided is an anti-aging agent for skin which contains, as an active component, an inositol derivative in which a monosaccharide or an oligosaccharide is bonded to inositol, in which a total amount of the monosaccharide or the oligosaccharide bonded to one inositol molecule is 2 or greater in terms of monosaccharide unit.
Abstract:
A method for hydrolyzing a plant biomass, which includes hydrothermal treatment in the presence of an equivalent concentration of an acid equal to 30 to 1,000% of the equivalent concentration of cations in a plant-biomass hydrolysis reaction solution; and a method for producing glucose using the above method for hydrolyzing a plant biomass. The hydrothermal treatment is preferably conducted by using a solid catalyst comprising a carbon material and using inorganic acid as acid. The method eliminates reaction-inhibiting factors to thereby obtain a high glucose yield.
Abstract:
A screw extruder for industrially mass-producing a cellulose-containing composition having a high saccharification performance by continuously conducting pretreatment of cellulose-containing biomass to pretreatment, which screw extruder is characterized as including a raw-material feed portion, a pulverization section, a heating section and a cooling section, and having a plurality of seal rings arranged in the heating section.
Abstract:
A treatment method for biomass, which is a pretreatment method including continuously performing hydrothermal treatment using a screw extruder to produce a biomass composition for saccharification from cellulose-containing biomass and containing only a small quantity of furfural, the treatment method sequentially including: pulverizing the cellulose-containing biomass so as to have a maximum grain size of 1,000 μm or less and adjusting a water content ratio thereof to from 30% to 80%; performing hydrothermal treatment in which an element including a seal ring and at least one set of a kneading disc and/or a left-hand screw is arranged immediately upstream of the seal ring, at a temperature of (1) from 150° C. to 200° C. or (2) from 200° C. to 215° C. for 0.1 minute to 15 minutes while performing kneading pulverization having a grinding effect; and cooling a treated product to 100° C. or less to recover the treated product.
Abstract:
A method for assaying cellulase activity, including: a process (A) of preparing two or more substrate solutions, which have an identical absorbance measured at an identical wavelength and in which cellulose is dispersed at an identical concentration, and measuring the absorbance of each of the substrate solutions; a process (B) of respectively adding different kinds of enzyme solutions to the substrate solutions, and performing an enzyme reaction under the same conditions; a process (C) of measuring the absorbance of each of the substrate solutions after the enzyme reaction; a process (D) of calculating the absorbance decrease values of the substrate solutions before and after the enzyme reaction; and a process (E) of assaying cellulase activities of the enzyme solutions based on the absorbance decrease values. In the assay of the process (E), it is determined that the enzyme solutions have higher cellulase activity as the absorbance decrease values become larger.
Abstract:
Provided is a method of removing a protein aggregate which can obtain a useful protein monomer in a high yield and a high purity as a raw material of a pharmaceutical product or the like. The method of removing a protein aggregate includes: a step of making the monomer of a protein and the aggregate of proteins adsorb to the column by making a solution containing a monomer of a protein and an aggregate of proteins pass through a column containing a hard porous polymer self-supporting structure to which a strong cation exchange group is fixed; and a step of making a mobile phase consisting of a mixed solution of a buffer solution and an ionic buffer solution pass through the column to which the monomer of a protein and the aggregate of proteins are adsorbed, to selectively elute the monomer of a protein.
Abstract:
A treatment method for biomass, which is a pretreatment method including continuously performing hydrothermal treatment using a screw extruder to produce a biomass composition for saccharification from cellulose-containing biomass serving as a raw material, the treatment method sequentially including: pulverizing the cellulose-containing biomass serving as a raw material so as to have a maximum grain size of 1,000 μm or less and adjusting a water content ratio thereof to from 20% to 80%; performing, in a heating section of the screw extruder, hydrothermal treatment at a temperature of from 150° C. to 250° C. for 0.1 minute to 10 minutes while performing kneading pulverization having a grinding effect; and cooling, in a cooling section of the screw extruder downstream of the heating section, a treated product to 100° C. or less to recover the treated product of the cellulose-containing biomass having an average grain size of 100 μm or less.
Abstract:
A method of manufacturing 1,4-butanediol, using a microbe and/or a culture thereof, by an enzyme reaction system that uses acyl-CoA reductase, via 3-hydroxybutyryl-CoA, crotonyl-CoA and 4-hydroxybutyryl CoA in this order, wherein the reactivity of the acyl-CoA reductase to 4-hydroxybutyryl CoA is greater than or equal to 0.05 times of the reactivity of the acyl-CoA reductase to 3-hydroxybutyryl-CoA.
Abstract:
A method of manufacturing a butanediol through 3-hydroxybutyryl-CoA that uses a microbe and/or a culture thereof and utilizes an enzyme reaction that is caused by an acyl-CoA reductase, wherein the microbe in the manufacturing method for a butanediol is characterized in that an activity of an acyl-CoA hydratase (EC number: 3. 1. 2. −) is deleted or reduced.
Abstract:
An object of the present invention is to obtain a protein monomer useful as a raw material for medicines industrially and economically in high yield and high purity. In the method for purifying a protein of the present invention, a protein solution containing a protein monomer and a protein aggregate is passed through a column holding a porous rigid polymeric self-supporting structure to which a hydrophobic group is immobilized, and then recovering the protein monomer in a flow-through mode.