Gutiérrez A, del Río J C, Martínez M J, Martínez A T
Instituto de Recursos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, PO Box 1052, E-41080 Seville, Spain.
Trends Biotechnol. 2001 Sep;19(9):340-8. doi: 10.1016/s0167-7799(01)01705-x.
At present, microbial and enzymatic preparations for the control of triglyceride-containing pitch deposits during the manufacture of mechanical and sulfite paper is commercially available. However, biotechnological products for pitch control in other pulping processes, such as alkaline pulping, are under development. These products include new fungi for the removal of steroids involved in pitch deposit formation in chlorine-free pulps, to be used as a biological pretreatment of wood before pulping. Simultaneously, tailor-made enzymes are being produced using protein-engineering techniques, enabling the specific removal of pitch contaminant compounds from paper pulp.
目前，用于控制机械纸和亚硫酸盐纸制造过程中含甘油三酯的树脂沉积的微生物和酶制剂已商业化。然而，用于其他制浆工艺（如碱性制浆）中控制树脂的生物技术产品正在研发中。这些产品包括用于去除无氯纸浆中树脂沉积所涉及的类固醇的新型真菌，可在制浆前用作木材的生物预处理。同时，正在使用蛋白质工程技术生产定制酶，以能够从纸浆中特异性去除树脂污染物。
