Laboratório de Ecologia Microbiana e Biotecnologia (LEMBiotech), Departamento de Biologia, Universidade Federal do Ceará, Av. Humberto Monte, 2977, Campus do Pici, Bloco 909, 60455-000 Fortaleza, Ceará, Brazil.
Mar Pollut Bull. 2013 Nov 15;76(1-2):214-9. doi: 10.1016/j.marpolbul.2013.08.040. Epub 2013 Sep 16.
This study evaluated the potential of bacterial isolates from mangrove sediments to degrade hexadecane, an paraffin hydrocarbon that is a large constituent of diesel and automobile lubricants. From a total of 18 oil-degrading isolates obtained by an enrichment technique, four isolates showed a great potential to degrade hexadecane. The strain MSIC01, which was identified by 16S rRNA gene sequencing as Acinetobacter sp., showed the best performance in degrading this hydrocarbon, being capable of completely degrading 1% (v/v) hexadecane within 48 h without releasing biosurfactants. Its hydrophobic surface probably justifies its potential to degrade high concentrations of hexadecane. Thus, the sediments from the studied mangrove harbour bacterial communities that are able to use oil as a carbon source, which is a particularly interesting feature due to the risk of oil spills in coastal areas. Moreover, Acinetobacter sp. MSIC01 emerged as a promising candidate for applications in bioremediation of contaminated mangrove sediments.
本研究评估了红树林沉积物中细菌分离物降解十六烷的潜力，十六烷是柴油和汽车润滑剂的主要成分之一，属于石蜡烃。通过富集技术获得的总共 18 种石油降解分离物中，有 4 种分离物显示出了很好的降解十六烷的潜力。通过 16S rRNA 基因测序鉴定为不动杆菌属的菌株 MSIC01 表现出了最好的降解这种烃类的性能，在 48 小时内可以完全降解 1%（v/v）的十六烷，而不释放生物表面活性剂。其疏水性表面可能证明了其能够降解高浓度十六烷的潜力。因此，研究中红树林的沉积物中含有能够将石油作为碳源的细菌群落，这是一个特别有趣的特征，因为沿海地区存在溢油风险。此外，不动杆菌属 MSIC01 菌株有望成为污染红树林沉积物生物修复的候选菌株。
Zotero 插件