采用石英晶体微天平检测纤维素酶在麦草碱木质素薄膜上的吸附量以及吸附构型的变化，并研究了pH 值对纤维素酶吸附的影响．研究发现:pH 值在 4．8 ～ 6．0 范围内时，纤维素酶与麦草碱木质素之间存在静电斥力，而且 pH 值越高，纤维素酶与麦草碱木质素之间的静电斥力越大，纤维素酶在麦草碱木质素薄膜上的吸附越不牢固，形成的吸附膜越疏松，相应的吸附量也越少;同时，较高的 pH 值可以促使更多的纤维素酶从麦草碱木质素薄膜上脱附下来，提高纤维素酶的回收利用率．

Quartz crystal microbalance was used to detect the adsorption capacity and configuration variation of cel-lulase on wheat straw alkaline lignin film,and the effect of pH value on the adsorption was investigated.The resultsindicate that (1) there exists electrostatic repulsion between cellulase and wheat straw alkaline lignin when the pHvalue ranges from 4.8 to 6.0; (2) the electrostatic repulsion becomes stronger and the cellulase adsorption on thelignin film becomes more unfirm at a higher pH value,thus loosening the adsorbed film and decreasing the adsorp-tion capacity; and (3) high pH value benefits the desorption of cellulase from wheat straw alkaline lignin film andits recovery.