Abstrak
Hemicellulases are key components in the degradation of plant biomass and carbon flow in nature. Thermotoga hypogea is a bacterium that can grow anaerobically at 90°C. It utilizes carbohydrates and peptides as energy and carbon sources. Three hemicellulytic enzymes: [beta]-xylosidase, [alpha]-L-arabinofuranosidase and acetylesterase were investigated.