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果胶酶可降低碱性H202漂白热磨机械浆的阳离子需求量。为证实果胶酶在现代纸机高剪切力作用下的有效性,对果胶酶和两种凝结剂的作用效果进行了比较。在50℃、pH值5的条件下,将果胶酶加入白水中,白水滤液的阳离子需求量降低了49%,总白水的阳离子需求量降低了35%,由此可证明,果胶酶在纸机高剪切力作用下是有效的。在降低白水阳离子需求量上,果胶酶比凝结剂更有效。商品果胶酶中存在的纤维素酶和半纤维素酶不会影响浆料游离度、成纸松厚度、光学性能、强度性能及匀度,也不会增加细小纤维含量。果胶酶能降低助留剂用量,并可进一步降低白水的储存成本。
Pectinase reduces the cation demand of basic H202 bleached thermomechanical pulp. To demonstrate the effectiveness of pectinase under the action of high sheer force of modern paper machines, the effects of pectinase and two coagulants were compared. Pectinase was added to the white water at 50 ° C and pH 5, reducing the cation demand of the white water filtrate by 49% and the total white water cation requirement by 35%. As a result, Paper machine under the action of high shear is effective. Pectinase is more effective than coagulant in reducing the demand for white water cations. The presence of cellulases and hemicellulases in the commodity pectinase does not affect the freeness of the pulp, the bulk, the optical properties, the strength properties and evenness of the paper, nor does it increase the fine fiber content. Pectinase reduces the amount of retention aid and can further reduce the storage cost of white water.