A peptide comprising the sequence shown below is added as a peptide tag to a useful protein, followed by allowing its expression.

X.sub.m(PY.sub.n).sub.qPZ.sub.r

In this formula, X, Y, and Z each represent an amino acid residue independently selected from the group consisting of R, G, S, K, T, L, N, Q, and H, with the proviso that at least one Y represents K, L, N, Q, H, or R. m represents an integer of 0 to 5; n represents 1, 2, or 3; q represents an integer of 1 to 10; and r represents an integer of 0 to 10.

The present invention relates to a process for producing cellulose with low inorganic impurities from sugarcane bagasse, the process comprising treating prehydrolysed sugarcane bagasse with a mixture of sulfite and at least one alkali to obtain residue having undissolved cellulose along with lignin rich liquor. The residue having undissolved cellulose is further subjected to delignification and addition of at least one enzyme to obtain a cellulose rich pulp. The cellulose rich pulp obtained is then treated with bleaching agents followed by separating pure cellulose rich pulp having high a-cellulose content and low inorganic impurities.

The present invention is directed to the production of a biopolymer, which may be applied both as an additive in the papermaking process, aiming at improving the physical and mechanical properties thereof in the process for producing cellulose, facilitating the drying process of the same, while conferring the same properties mentioned above for the production of paper, when it is processed. The present invention further relates to the process for producing said biopolymer, the papermaking process, the process for producing cellulose, the use of said biopolymer and the product comprising said biopolymer.

Lactic acid bacterial cultures, cell populations and articles of manufacture comprising same are disclosed for generating ethanol from lignocellulose.

The present invention relates to isolated polypeptides having beta-xylosidase activity and polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.

The present invention generally relates to the field of fermentation technology and microorganisms useful for such fermentations. The invention also relates to materials including nucleic acids and proteins useful for altering fermentation characteristics of microorganisms, and to microorganisms comprising such nucleic acids and/or proteins. In particular, the invention relates to materials for conferring, modifying or reducing microbial stress resistance.

The present invention relates to isolated polypeptides having xylanase activity and polynucleotides encoding the polypeptides. The invention also relates to nucleic acid constructs, vectors, and host cells comprising the polynucleotides as well as methods of producing and using the polypeptides.

The present invention relates to variant xylanase enzymes and their use thereof.

The present invention relates to enzyme compositions comprising a polypeptide having cellobiohydrolase II activity, a polypeptide having xylanase activity, and one or more cellulolytic proteins and their use in the degradation or conversion of cellulosic material.

The present disclosure is directed, in a first aspect, to the use of inverting beta-xylosidase enzymes to reduce byproduct formation and increase the yield of fermentation products, as well as, in a second aspect, to the use of retaining beta-xylosidase enzymes to improve production of alkyl-beta-xylopyranoside compounds, in a simultaneous saccharification and fermentation reactions.