5Funaoka M, Abe I. Rapid separation of wood into carbohydrate and lignin with concentrated acid-phenol system[J]. Tappi, 1989, 72(8): 145-149.
6Mikame K, Funaoka M. Polymer structure of lignophenol: I . Structure and function of fractionated lignophenol[J]. Polymer Journal, 2006, 38(6): 585-591.
7Funaoka M, Fukatsu S. Characteristics of lignin structural conversion in a phase-separative reaction system composed of cresol and sulfuric acid[J]. Holzforschung, 1996, 50(3): 245-249.
8Higuchi T, Ito Y, Shimada M, et al. Chemical properties of milled wood lignin of grasses[J]. Phytochemistry, 1967, 6(11): 1551-1556.
9Xu F, Sun J X, Sun R C, et al. Comparative study of organosolv lignins from wheat straw[J]. Industrial Crops and Products, 2006, 23(2): 180-193.
10Ren H, Funaoka M. Potential of herbaceous lignocellulosics as industrial raw materials[J]. Transactions of the Materials Research Society of Japan, 2009, 34(4): 727-730.
