Description:Content: 1. Hemicelluloses and Their Derivatives / RunCang Sun, X. F. Sun and J. Tomkinson -- 2. Industrially Isolated Hemicelluloses / Juergen Puls and Bodo Saake -- 3. Twin Screw Extrusion and Ultrafiltration for Xylan Production from Wheat Straw and Bran / P. Marechal, J. Jorda, P.-Y. Pontalier and L. Rigal