State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China.
Department of Bioengineering, Shandong Polytechnic, Jinan 250104, China.
Biomed Res Int. 2020 Feb 1;2020:9497215. doi: 10.1155/2020/9497215. eCollection 2020.
High-yield pulps (HYPs), such as CTMP (chemi-thermo-mechanical pulp), are attractive due to their low cost and high wood utilization. However, their drawback of rapid brightness reversion (yellowing) limits wide use of the HYPs. In this study, a fungus, X4, was applied to treat poplar CTMP for exploring the effects of biotreatment on brightness and light-induced yellowing of the pulp. The results indicated that the biotreatment with X4 could improve the brightness of poplar CTMP and inhibit light-induced yellowing of the pulp. The yellowing inhibition mechanism was explored by the analysis of enzyme production regularity during biotreatment, changes in chemical components, and the UV-Vis absorption spectra and FTIR-ATR spectra of pulps before and after biotreatment.
高得率浆（如 CTMP）因其低成本和高木材利用率而备受关注。然而，其快速返黄（变黄）的缺点限制了高得率浆的广泛应用。在本研究中，应用真菌 X4 处理杨木 CTMP，以探索生物处理对纸浆白度和光致黄变的影响。结果表明，X4 生物处理可提高杨木 CTMP 的白度并抑制纸浆的光致黄变。通过分析生物处理过程中酶的产生规律、化学成分的变化以及生物处理前后纸浆的紫外-可见吸收光谱和傅里叶变换衰减全反射光谱，探讨了黄变抑制机制。
