Microbiology Program, Department of Biological Sciences, Faculty of Science, Kuwait University, P.O.Box 5969, Safat 13060, Kuwait.
Microbiology Program, Department of Biological Sciences, Faculty of Science, Kuwait University, P.O.Box 5969, Safat 13060, Kuwait.
Environ Pollut. 2017 Aug;227:468-475. doi: 10.1016/j.envpol.2017.04.089. Epub 2017 May 8.
The plant waste-products, wheat straw, corn-cobs and sugarcane bagasse took up respectively, 190, 110 and 250% of their own weights crude oil. The same materials harbored respectively, 3.6 × 10, 8.5 × 10 and 2.3 × 10 g cells of hydrocarbonoclastic microorganisms, as determined by a culture-dependent method. The molecular, culture-independent analysis revealed that the three materials were associated with microbial communities comprising genera known for their hydrocarbonoclastic activity. In bench-scale experiments, inoculating oily media with samples of the individual waste products led to the biodegradation of 34.0-44.9% of the available oil after 8 months. Also plant-product samples, which had been used as oil sorbents lost 24.3-47.7% of their oil via their associated microorganisms, when kept moist for 8 months. In this way, it is easy to see that those waste products are capable of remediating spilled oil physically, and that their associated microbial communities can degrade it biologically.
植物废料——麦秆、玉米芯和甘蔗渣分别吸收了相当于其自重 190%、110%和 250%的原油。通过依赖培养的方法测定，同样的材料分别含有 3.6×10、8.5×10 和 2.3×10 个烃类降解微生物细胞。分子、非培养的分析揭示了这三种材料与微生物群落有关，这些微生物群落包含已知具有烃类降解活性的属。在规模较小的实验中，在油性培养基中接种这些单个废物样本，经过 8 个月后，可生物降解 34.0-44.9%的可用油。同样，当植物产品样本作为吸油剂保持湿润 8 个月时，通过其相关微生物，它们会损失 24.3-47.7%的油。通过这种方式，很容易看出这些废物能够物理修复溢油，而其相关的微生物群落能够进行生物降解。
