Fibrous residue from cane sugar mfg operations, which contains 50% cellulose, 25% pentosans, and 25% lignin: Wiggins, Sugar J. 16, No. 8, pp 18, 22, 24 (1954), C.A. 48, 9729h (1954). Review of properties and uses: Vo Tong Xuan, Samaniego, Sugar News 46, 276, 284 (1970); M. A. Clarke in Kirk-Othmer Encyclopedia of Chemical Technology vol. 3 (Wiley-Interscience, New York, 3rd ed., 1978) pp 434-438.