Involved in degradation of plant cell wall polysaccharides. Has acetyl esterase activity towards a broad range of substrates including xylose-tetraacetate, 4-O-methylumbelliferyl acetate, glucose-pentaacetate, cephalosporin C, and acetylated xylo-oligosaccharides smaller than xylo-heptaose. Displays no detectable activity on polymeric acetylated xylan. Optimum pH is 6.0 with glucose-pentaacetate as substrate. Active from pH 5.0 to 8.0. Optimum temperature is 40 degrees Celsius with glucose-pentaacetate as substrate. Active from 30 to 50 degrees Celsius. At temperatures of 30 degrees Celsius and lower, less than 10% of the maximum activity is left. At 50 degrees Celsius, retains 60% of its maximum activity. Glycan degradation; xylan degradation. Belongs to the carbohydrate esterase 7 family.