1Peng Frank, Ferritsius Rita,Angsas Ulfl. Mechani- cal Pulping with Pectinase Pretreatment of Wood Chips [C].2003 International Mechanical Pulping- Conference, 2003.
2Kenneth ES Anna CS Jeffrey WT et al. Pectic acids in the production of wood containing paper [J]. TAPPI J, 1998,81 (7) : 131.
4Serge P6res, Karim Mazeau, Catherine Herr du Penhoat. The three-dimensional structures of the pectic polysaccharides [l].Plant Physlol. Biochem, 2000,38(1/2): 37-55.
