The present disclosure provides novel bacterial strains with altered expression or start codon modification of one or more RNA degradation/processing genes. The RNA degradation genes of the present disclosure are controlled by heterologous promoters. The present disclosure further describes methods for generating microbial strains comprising heterologous promoter sequences operably linked to RNA degradation/processing genes.

There is a process for the preparation of a sugar product from cellulosic material and a process for the preparation of a fermentation product from cellulosic material.

A protein having a novel saccharide oxidase activity capable of being subjected to various uses is provided. The present invention provides a protein having the following physicochemical characteristics: (1) effect: oxidizing a saccharide to produce a saccharic acid; (2) substrate specificity: acting on glucose, maltotriose, maltose, galactose, maltotetraose, lactose, and cellobiose; and, (3) [Km value of glucose]/[Km value of maltose]1.

A protein having a novel saccharide oxidase activity capable of being subjected to various uses is provided. The present invention provides a protein having the following physicochemical characteristics: (1) effect: oxidizing a saccharide to produce a saccharic acid; (2) substrate specificity: acting on glucose, maltotriose, maltose, galactose, maltotetraose, lactose, and cellobiose; and, (3) [Km value of glucose]/[Km value of maltose]1.

A protein having a novel saccharide oxidase activity capable of being subjected to various uses is provided. The present invention provides a protein having the following physicochemical characteristics: (1) effect: oxidizing a saccharide to produce a saccharic acid; (2) substrate specificity: acting on glucose, maltotriose, maltose, galactose, maltotetraose, lactose, and cellobiose; and, (3) [Km value of glucose]/[Km value of maltose]1.

A protein having a novel saccharide oxidase activity capable of being subjected to various uses is provided. The present invention provides a protein having the following physicochemical characteristics: (1) effect: oxidizing a saccharide to produce a saccharic acid; (2) substrate specificity: acting on glucose, maltotriose, maltose, galactose, maltotetraose, lactose, and cellobiose; and, (3) [Km value of glucose]/[Km value of maltose]1.

The present invention provides methods of method of synthesizing 2,5-furan dicarboxylic acid (FDCA) and FDCA precursor molecules. The methods involve performing a chemical dehydration reaction on a gluconic acid derivative in the presence of a dehydration catalyst. In some embodiments the gluconic acid derivative can be 2-dehydro-3-deoxy gluconic acid (DHG) or an ester thereof, 2-ketogluconic acid (2KGA) or an ester thereof, and 5-ketogluconic acid (5KGA) or an ester thereof. The 2,5-furan dicarboxylic acid precursor molecule is thereby synthesized, which can be converted into FDCA. The chemical dehydration can be performed by a variety of acid basic catalysts.

The present invention provides methods of method of synthesizing 2,5-furan dicarboxylic acid (FDCA) and FDCA precursor molecules. The methods involve performing a chemical dehydration reaction on a gluconic acid derivative in the presence of a dehydration catalyst. In some embodiments the gluconic acid derivative can be 2-dehydro-3-deoxy gluconic acid (DHG) or an ester thereof, 2-ketogluconic acid (2KGA) or an ester thereof, and 5-ketogluconic acid (5KGA) or an ester thereof. The 2,5-furan dicarboxylic acid precursor molecule is thereby synthesized, which can be converted into FDCA. The chemical dehydration can be performed by a variety of acid basic catalysts.

The disclosure is in the technical field of synthetic biology and metabolic engineering. More particularly, the disclosure is in the technical field of cultivation or fermentation of metabolically engineered cells. The disclosure describes a cell metabolically engineered for production of a mixture of at least four different neutral non-fucosylated oligosaccharides. Furthermore, the disclosure provides a method for the production of a mixture of at least four different neutral non-fucosylated oligosaccharides by a cell as well as the purification of at least one of the oligosaccharides from the cultivation.

The disclosure is in the technical field of synthetic biology and metabolic engineering. More particularly, the disclosure is in the technical field of cultivation or fermentation of metabolically engineered cells. The disclosure describes a cell metabolically engineered for production of a mixture of at least four different neutral non-fucosylated oligosaccharides. Furthermore, the disclosure provides a method for the production of a mixture of at least four different neutral non-fucosylated oligosaccharides by a cell as well as the purification of at least one of the oligosaccharides from the cultivation.