Deng Yiling, Wang Chenyuan, Liu Yalan, Chen Ping, Lin Xiaoshan, Zhang Yi
School of Biology and Biological Engineering, South China University of Technology No. 382 Waihuan East Rd., Guangzhou University City, Panyu District Guangzhou 510006 Guangdong China
RSC Adv. 2019 Aug 30;9(47):27398-27405. doi: 10.1039/c9ra04410h. eCollection 2019 Aug 29.
The aim of this work is to study the potential degradation of polyvinyl alcohol (PVA) by a novel fungus sp. BJ isolated from soil compost. When it was cultured on a semi-synthetic medium containing PVA at 30 °C and 160 rpm for 8 days, the removal rates of PVA 1788, 1799 and 2488 reached 87.40%, 86.31% and 44.80%, respectively. Gel permeation chromatography (GPC) analysis revealed significant reductions of the number average molecular weight and the weight average molecular weight of PVA 1788 from 47 358 to 13 345 and from 71 387 to 24 238, respectively, after 8 days. Fourier transform infrared spectroscopy (FTIR) indicated that some substances containing carbonyl groups (likely aldehydes or ketones) might have been produced during the biodegradation process. These results indicate that the isolate has potential for degrading PVA. This study provides the first demonstration that has the ability to assimilate PVA.
这项工作的目的是研究从土壤堆肥中分离出的一种新型真菌BJ菌株对聚乙烯醇（PVA）的潜在降解作用。当它在含有PVA的半合成培养基中于30℃、160 rpm条件下培养8天时，PVA 1788、1799和2488的去除率分别达到87.40%、86.31%和44.80%。凝胶渗透色谱（GPC）分析显示，8天后PVA 1788的数均分子量和重均分子量分别从47358显著降低至13345，从71387显著降低至24238。傅里叶变换红外光谱（FTIR）表明，在生物降解过程中可能产生了一些含羰基的物质（可能是醛或酮）。这些结果表明该分离菌株具有降解PVA的潜力。本研究首次证明了其具有同化PVA的能力。
