Agrawal Sharad, Sharma Divya, Nagpal Raksha, Kaur Amanjot, Bhardwaj Nishikant, Mahajan Ritu
Department of Life Sciences, SBSR, Sharda University, Greater Noida, India.
Department of Life Sciences, IAMR, Ghaziabad, India.
3 Biotech. 2023 Mar;13(3):106. doi: 10.1007/s13205-023-03526-x. Epub 2023 Feb 28.
This study has been conducted to assess the pulpability of ultrafiltered pectinase and xylanase in pulping of wheat straw. Best biopulping conditions were achieved using 107 and 250 IU of pectinase and xylanase, respectively, per gram of wheat straw, 180 min of treatment period, one gram: 10 m1 material to liquor ratio, 8.5 pH and 55 °C temperature. Ultrafiltered enzymatic treatment improved the pulp yield (6.18%), brightness (17.83%), along with reduced rejections (61.01%) and kappa number (16.95%) as compared to chemically synthesized pulp. Biopulping of wheat straw saved 14% alkali dose, with nearly same optical properties, as obtained under 100% alkali dose. Bio-chemically pulped samples resulted an increase in breaking length, tear index, burst index, viscosity, double fold and Gurley porosity by 6.05%, 18.64%, 26.42%, 7.94%, 21.6% and 15.38% respectively, in comparison to control pulp samples. Bleached-biopulped samples showed an improvement in breaking length, tear index, burst index, viscosity, double fold number, and Gurley porosity by 7.39%, 3.55%, 28.82%, 9.1%, 53.66%, and 30.95% respectively. Thus, biopulping of wheat straw with ultrafiltered enzymes lowers alkali consumption and also improves the paper quality. This is the first study reporting, eco-friendly biopulping, for producing better quality wheat straw pulp, using ultrafiltered enzymes.
本研究旨在评估超滤果胶酶和木聚糖酶在麦草制浆中的可打浆性。每克麦草分别使用107和250国际单位的果胶酶和木聚糖酶、180分钟的处理时间、1克：10毫升的料液比、8.5的pH值和55°C的温度，可达到最佳生物制浆条件。与化学合成纸浆相比，超滤酶处理提高了纸浆得率（6.18%）、亮度（17.83%），同时降低了筛渣率（61.01%）和卡伯值（16.95%）。麦草生物制浆节省了14%的碱用量，其光学性能与100%碱用量下获得的性能几乎相同。与对照纸浆样品相比，生物化学法制浆样品的抗张强度、撕裂指数、耐破指数、粘度、耐折度和葛莱透气度分别提高了6.05%、18.64%、26.42%、7.94%、21.6%和15.38%。漂白生物制浆样品的抗张强度、撕裂指数、耐破指数、粘度、耐折度和葛莱透气度分别提高了7.39%、3.55%、28.82%、9.1%、53.66%和30.95%。因此，用超滤酶对麦草进行生物制浆可降低碱消耗并提高纸张质量。这是第一项报道使用超滤酶进行环保生物制浆以生产更高质量麦草纸浆的研究。
