Tianjin Key Laboratory of Pulp and Paper, College of Paper Making Science and Technology, Tianjin University of Science and Technology, Tianjin 300457, China; Limerick Pulp & Paper Centre & Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
Limerick Pulp & Paper Centre & Department of Chemical Engineering, University of New Brunswick, Fredericton, NB E3B 5A3, Canada.
Bioresour Technol. 2019 Jun;281:440-448. doi: 10.1016/j.biortech.2019.02.132. Epub 2019 Mar 9.
Recently, the worldwide production of dissolving pulp has grown rapidly. Enzymatic technologies play an important role in producing high-quality dissolving pulp, due to their green, mild conditions, high specificity and efficiency. In this review, the relevant publications regarding enzyme applications for dissolving pulp are summarized. Cellulase and xylanase are two major enzymes used for this purpose. Cellulase can improve the quality of dissolving pulp, such as improving the reactivity/accessibility, controlling the intrinsic viscosity and adjusting the molecular weight. Xylanase is mainly used to increase the purity of the dissolving pulp and improve the pulp brightness. Furthermore, in order to increase the enzymatic treatment efficiency, the enzymatic technology can be combined with other techniques, including mechanical refining, fiber fractionations, alkali treatment and use of additives. The advantages, disadvantages and practical implications are analyzed. Also, the potential of other enzymes (such as laccase, mannanase) are discussed.
近年来，全球溶解浆的产量增长迅速。由于其绿色、温和的条件、高特异性和高效率，酶技术在生产高质量溶解浆方面发挥着重要作用。在这篇综述中，总结了有关酶在溶解浆中的应用的相关出版物。纤维素酶和木聚糖酶是为此目的而使用的两种主要酶。纤维素酶可以改善溶解浆的质量，例如提高反应性/可及性、控制特性粘度和调节分子量。木聚糖酶主要用于提高溶解浆的纯度和提高纸浆的白度。此外，为了提高酶处理效率，可以将酶技术与其他技术（包括机械精制、纤维分级、碱处理和添加剂的使用）相结合。分析了其优缺点和实际意义。还讨论了其他酶（如漆酶、甘露聚糖酶）的潜力。
