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研究了在4℃条件下,由橄榄灰绿链霉菌(StreptomycesolivaceovirdisE-86简称sp.E-86)产木聚糖酶分别在木质纤维玉米芯成分:纤维素、木聚糖、木质素、全纤维素和玉米芯粉上的吸附动力学以及吸附90min时的吸附等温线。结果表明,该木聚糖酶在这些木质纤维上很快达到平衡,除木聚糖在1h达到平衡外,其它都不超过30min;吸附等温线都符合两阶段非均匀表面吸附模型;在所有吸附等温线中,玉米芯吸附量最大,纤维素最小;在三种纤维中,全纤维素吸附量最大、木聚糖次之、纤维素最小。
The results showed that the xylanase produced by Streptomyces olivaceovirdis E-86 (abbreviated as sp. E-86) had the highest content of lignocellulose, xyloglycan, lignin, Adsorption kinetics on sorbitol and corn cob powder and the adsorption isotherm at 90 min. The results showed that the xylanase quickly reached the equilibrium on these lignocelluloses. Except that the xylan reached the equilibrium at 1h, the rest did not exceed 30min. The adsorption isotherms all accorded with the two-stage heterogeneous surface adsorption model. Isotherm, corn cob adsorption capacity of the largest, the smallest cellulose; among the three fibers, the largest amount of cellulose adsorption, xylan followed, cellulose minimum.