当前位置: X-MOL 学术Int. Microbiol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A comparative GC–MS analysis of bioactive secondary metabolites produced by halotolerant Bacillus spp. isolated from the Great Sebkha of Oran
International Microbiology ( IF 3.1 ) Pub Date : 2021-06-07 , DOI: 10.1007/s10123-021-00185-x
Fatima Nas 1 , Nadia Aissaoui 1 , Mouna Mahjoubi 2 , Amor Mosbah 2 , Mounia Arab 1 , Soukaina Abdelwahed 2 , Rim Khrouf 2 , Ahmed-Salaheddine Masmoudi 2 , Ameur Cherif 2 , Nihel Klouche-Khelil 1, 3
Affiliation  

The reemergence of infectious diseases and resistant pathogens represents a serious problem for human life. Hence, the screening for new or alternative antimicrobial compounds is still urgent. Unusual ecosystems such as saline habitats are considered promising environments for the purposes of isolating bacterial strains able to produce potent natural products. The aim of this study is the identification of bioactive compounds biosynthesized by three halotolerant strains isolated from the Sebkha of Oran (Algeria) using gas chromatography coupled to mass spectrometry. Primary screening investigation of antimicrobial activities were performed against reference bacterial and fungal strains and revealed a broad-spectrum activity. Secondary metabolite extraction was carried out using ethyl acetate and chloroform. Crude extracts were tested for bioactivity using the disc diffusion method and subjected to GC–MS analysis. The extracts showed an important inhibitory effect against all tested strains. Fifty-six compounds were identified; they include tert-butyl phenol compounds, fatty acid methyl esters due to the methylation procedure, hydrocarbons, aldehydes, benzoquinones, pyrrols, and terpenes. Literature reports such compounds to have wide biological and pharmaceutical applications. The molecular identification of the three isolates was achieved using the 16S-23S rRNA gene intergenic spacer region (ITS) and 16S rRNA sequencing. Partial 16S rRNA gene sequencing showed very high similarity with many species of Bacillus. This study provided insights on the potential of halotolerant Bacillus as drug research target for bioactive metabolites. The findings suggest that the Great Sebkha of Oran is a valuable source of strains exhibiting variety of beneficial attributes that can be utilized in the development of biological antibiotics.



中文翻译:

耐盐芽孢杆菌产生的生物活性次级代谢物的比较 GC-MS 分析。与奥兰大塞布哈隔绝

传染病和耐药病原体的重新出现是人类生活的一个严重问题。因此,筛选新的或替代的抗微生物化合物仍然迫在眉睫。不寻常的生态系统,如盐碱地,被认为是有希望的环境,用于分离能够产生有效天然产物的细菌菌株。本研究的目的是使用气相色谱与质谱联用,鉴定由从 Oran(阿尔及利亚)的 Sebkha 分离的三种耐盐菌株生物合成的生物活性化合物。针对参考细菌和真菌菌株进行了抗菌活性的初步筛选研究,并揭示了广谱活性。使用乙酸乙酯和氯仿进行次级代谢物提取。使用圆盘扩散法测试粗提取物的生物活性,并进行 GC-MS 分析。提取物对所有测试菌株均显示出重要的抑制作用。鉴定了 56 种化合物;它们包括叔丁基苯酚化合物、甲基化过程产生的脂肪酸甲酯、碳氢化合物、醛、苯醌、吡咯和萜烯。文献报道这些化合物具有广泛的生物和药物应用。使用 16S-23S rRNA 基因基因间间隔区 (ITS) 和 16S rRNA 测序实现了三种分离物的分子鉴定。部分 16S rRNA 基因测序显示出与许多物种的高度相似性 鉴定了 56 种化合物;它们包括叔丁基苯酚化合物、甲基化过程产生的脂肪酸甲酯、碳氢化合物、醛、苯醌、吡咯和萜烯。文献报道这些化合物具有广泛的生物和药物应用。使用 16S-23S rRNA 基因基因间间隔区 (ITS) 和 16S rRNA 测序实现了三种分离物的分子鉴定。部分 16S rRNA 基因测序显示出与许多物种的高度相似性 鉴定了 56 种化合物;它们包括叔丁基苯酚化合物、甲基化过程产生的脂肪酸甲酯、碳氢化合物、醛、苯醌、吡咯和萜烯。文献报道这些化合物具有广泛的生物和药物应用。使用 16S-23S rRNA 基因基因间间隔区 (ITS) 和 16S rRNA 测序实现了三种分离物的分子鉴定。部分 16S rRNA 基因测序显示出与许多物种的高度相似性 使用 16S-23S rRNA 基因基因间间隔区 (ITS) 和 16S rRNA 测序实现了三种分离物的分子鉴定。部分 16S rRNA 基因测序显示出与许多物种的高度相似性 使用 16S-23S rRNA 基因基因间间隔区 (ITS) 和 16S rRNA 测序实现了三种分离物的分子鉴定。部分 16S rRNA 基因测序显示出与许多物种的高度相似性芽孢杆菌。该研究为耐盐芽孢杆菌作为生物活性代谢物的药物研究靶点的潜力提供了见解。研究结果表明,奥兰的 Great Sebkha 是具有多种有益特性的菌株的宝贵来源,可用于开发生物抗生素。

更新日期:2021-06-08
down
wechat
bug