CAJ | 학술논문

研究了耐热耐碱木聚糖酶X对杨木硫酸盐浆预处理的选择性及其对无元素氯（ECF）漂白特性的影响。结果表明：该木聚糖酶预处理具有高的助漂选择性,预处理对纸浆的得率及黏度影响不大;该木聚糖酶对温度及pH的适应范围较广,在温度为75～80℃、pH 8.0～9.5范围内都可以发挥有效的助漂作用,尤其在温度80℃、pH 8.0、酶用量2 IU/g的条件下更能发挥酶效;耐热耐碱木聚糖酶X预处理可减少漂白ClO2用量,当达到对照浆相同白度（90%ISO）时可减少D0段26%～27%的ClO2用量（相当于总用氯量的16%）。
연구료내열내감목취당매X대양목류산염장예처리적선택성급기대무원소록（ECF）표백특성적영향。결과표명：해목취당매예처리구유고적조표선택성,예처리대지장적득솔급점도영향불대;해목취당매대온도급pH적괄응범위교엄,재온도위75～80℃、pH 8.0～9.5범위내도가이발휘유효적조표작용,우기재온도80℃、pH 8.0、매용량2 IU/g적조건하경능발휘매효;내열내감목취당매X예처리가감소표백ClO2용량,당체도대조장상동백도（90%ISO）시가감소D0단26%～27%적ClO2용량（상당우총용록량적16%）。
The selectivity and its effect of the pretreatment on the elemental clhlorine free （ECF） bleaching properties by a thermostable and alkaline tolerant xylanase X were sLudied. The results show that the pretreatment has high selectivity, without causing an obvious decrease of the pulp viscosity, the effective pretreatment conditions can be varied among 75~80~C and pH 8.0~9.5, and the better pretreatment conditions were 80~C, pH 8.0 and enzymes dosage 2 IU/g. The final brightness of the bleached pulps with the pretreatment by the xylanase X was ] %ISO higher than that unpretreatment bleached pulps （90%ISO brightness）, or the C102 dosage in the Do stage could be saved by 26%-27% to achieve the same brightness （90%ISO） of the unprereatment bleached pulp.