Abstract: A method of producing 2,3-butanediol includes the steps of: culturing a microorganism belonging to the genus Zymobacter in a fermentation feedstock containing a carbon source (Step A); and purifying 2,3-butanediol from culture liquid obtained in this step (Step B). In this method, the carbon source contains pentose, and the microorganism belonging to the genus Zymobacter has a capacity to metabolize pentose.

Abstract: A method of producing 2,3-butanediol includes the steps of: culturing a microorganism belonging to the genus Zymobacter in a fermentation feedstock containing a carbon source (Step A); and purifying 2,3-butanediol from culture liquid obtained in this step (Step B). In this method, the carbon source contains pentose, and the microorganism belonging to the genus Zymobacter has a capacity to metabolize pentose.

Abstract: The object is to develop a bacterium capable of fermenting glucose, mannose and xylose simultaneously, which can ferment a saccharified solution of a cellulose-type or lignocellulose-type biomass resource to produce ethanol, and to construct an energy-saving high-efficiency bioethanol conversion process. Thus, disclosed is Zymomonas mobilis bacterium which is prepared by integrating a gene encoding a phosphomannose isomerase derived from Escharichia coli into a levansucrase gene located on the chromosome by the double cross-over by means of a homologous recombsination method, and then introducing recombinant DNA prepared by binding a DNA fragment containing genes encoding a xylose isomerase, a xylulokinase, a transaldolase and a transketolase, respectively, all derived from Escherichia coli to a vector. Also disclosed is a method for producing ethanol by continuously fermenting a saccharified solution of a cellulose-type biomass resource in a system on which the Zymomonas mobilis bacterium is immobilized.

Abstract: The object is to develop a bacterium capable of fermenting glucose, mannose and xylose simultaneously, which can ferment a saccharified solution of a cellulose-type or lignocellulose-type biomass resource to produce ethanol, and to construct an energy-saving high-efficiency bioethanol conversion process. Thus, disclosed is Zymomonas mobilis bacterium which is prepared by integrating a gene encoding a phosphomannose isomerase derived from Escharichia coli into a levansucrase gene located on the chromosome by the double cross-over by means of a homologous recombsination method, and then introducing recombinant DNA prepared by binding a DNA fragment containing genes encoding a xylose isomerase, a xylulokinase, a transaldolase and a transketolase, respectively, all derived from Escherichia coli to a vector. Also disclosed is a method for producing ethanol by continuously fermenting a saccharified solution of a cellulose-type biomass resource in a system on which the Zymomonas mobilis bacterium is immobilized.

Abstract: This invention provides transformed microorganisms which can produce ethanol from cellooligosaccharide, by introducing ?-glucosidase gene by recombinant DNA method, into microorganisms belonging to genus Zymobacter which cannot utilize cellooligosaccharide.

Abstract: This invention provides transformed microorganisms which can produce ethanol from pentose, by introducing pentose metabolizing enzymes into microorganisms belonging to genus Zymobacter which cannot utilize pentose.

Abstract: This invention provides transformed microorganisms which can produce ethanol from cellooligosaccharide, by introducing ?-glucosidase gene by recombinant DNA method, into microorganisms belonging to genus Zymobacter which cannot utilize cellooligosaccharide.

Abstract: This invention provides transformed microorganisms which can produce ethanol from pentose, by introducing pentose metabolizing enzymes into microorganisms belonging to genus Zymobacter which cannot utilize pentose.

Abstract: This invention provides transformed microorganisms which can produce ethanol from cellooligosaccharide, by introducing ?-glucosidase gene by recombinant DNA method, into microorganisms belonging to genus Zymobacter which cannot utilize cellooligosaccharide.

Abstract: Oligosaccharides having physiological activities are synthesized in vivo in order to, for example, improve intestinal bacterial flora. An enzyme composition comprising an enzyme capable of forming an oligosaccharide having a physiological activity in the living body and a method for forming an oligosaccharide having a physiological activity in the living body are provided.

Abstract: A method for the production of a cellulosic product, which comprises:culturing a cellulose-producing microorganism transformed with a gene for an enzyme involved in sucrose metabolism in a medium containing sucrose, allowing the cellulosic product to be produced and accumulated in the medium, and collecting the cellulosic product. By the present method, the cellulosic product can be produced efficiently and economically.