NOVELTY - A polypeptide comprising an amino acid sequence having at least 76% sequence identity to 289 amino acid sequence (SEQ ID NO: 11) fully defined in the specification, or at least 73% sequence identity to 271 amino acid sequence (SEQ ID NO: 12) fully defined in the specification, or a fragment or its variant having ferulic esterase activity.    USE - The polypeptide is useful in enzyme preparation for treating cellulosic or lignocellulosic material and feed for improving animal growth rate and feed conversion ratio (all claimed). The polypeptide is useful for improving quality of animal feed, dishwashing applications, in detergent compositions, in pulp and paper, textile, food, baking or beverage industry.    ADVANTAGE - The polypeptide improves efficiency of cellulose and lignocellulose degradation even at elevated temperatures.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) isolated polynucleotide chosen from (a) a polynucleotide comprising the coding sequence comprising 1115 or 1080 (SEQ ID NO: 9 or 10) fully defined in the specification, (b) a polynucleotide encoding a polypeptide, (c) a polynucleotide encoding a fragment of a polypeptide encoded by a polynucleotide of (a) or (b), where the fragment has ferulic esterase activity, and (d) a polynucleotide comprising a nucleotide sequence which is degenerate to the nucleotide sequence of a polynucleotide sequence of (a) or (b), or the complementary strand of such a polynucleotide; (2) vector, which comprises a polynucleotide operably linked to regulatory sequences capable of directing expression of the polypeptide; (3) host cell comprising the vector; (4) Escherichia coli strain (DSM 26070 or DSM 26071); (5) method of producing a polypeptide; (6) enzyme preparation comprising the polypeptide; (7) method for treating cellulosic or lignocellulosic material, involves reacting the cellulosic or lignocellulosic material with a polypeptide or an enzyme preparation; (8) method of using a polypeptide, or an enzyme preparation of claim 10 for processing biomass, and in biofuel, starch, textile, detergent, pulp and paper, food, baking, feed or beverage industry; (9) detergent composition comprising the polypeptide or an enzyme preparation; (10) method for improving fabric care properties or textile cleaning effect of a detergent composition, comprising adding a polypeptide of claim 1 or enzyme preparation to the detergent composition; and (11) animal feed comprising the polypeptide or an enzyme preparation.