Genomic and biotechnological potential of a novel oil-degrading strain Enterobacter kobei DH7 isolated from petroleum-contaminated soil

Nawaz, Muhammad; Xu, Chunyan; Qaria, Majjid A.; Haider, Syed Zeeshan; Khalid, Hafiz Rameez; Alghamdi, Huda Ahmed; Khan, Iqrar Ahmad; Zhu, Daochen

doi:10.1016/j.chemosphere.2023.139815

Cited by 2 publications

(1 citation statement)

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“…7.b, after 7 days, the dominant genus in BD group was Enterobacter (97.58%), with Pseudomonas also existed at a low abundance. Enterobacter had several metabolic pathways and enzyme-encoding genes related to oil degradation by genome analysis [43]. In group BD+ GX7, the dominate genus were Pseudomonas(47.26%), Stenotrophomonas(33.78%) and Achromobacter(7.89%).…”

Section: Community Analysismentioning

confidence: 99%

Biosurfactant production by Bacillus cereus GX7 utilizing organic waste and its application in the remediation of hydrocarbon-contaminated environments

Zhang,

Gao,

et al. 2024

Preprint

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The use of biosurfactants represents a promising technology for remediating hydrocarbon pollution in the environment. This study evaluated a highly effective biosurfactant strain-Bacillus cereus GX7’s ability to produce biosurfactants from industrial and agriculture organic wastes. GX7 showed poor utilization capacity for oil soluble organic waste but effectively utilized of water soluble organic wastes such as starch hydrolysate and wheat bran juice as carbon sources to enhance biosurfactant production. This led to significant improvements in surface tension and emulsification index. Corn steep liquor was also effective as a nitrogen source for GX7 in biosurfactant production. The biosurfactants produced by strain GX7 demonstrated a remediation effect on oily beach sand, but are slightly inferior to chemical surfactants. Inoculation with GX7 (70.36%) or its fermentation solution (94.38%) can effectively enhanced the degradation efficiency of diesel oil in polluted seawater, surpassing that of indigenous degrading bacteria treatments (57.62%). Moreover, Inoculation with GX7’s fermentation solution notably improved the community structure by increasing the abundance of functional bacteria such as Pseudomonas and Stenotrophomonas in seawater. These findings suggest that the GX7 as a promising candidate for bioremediation of petroleum hydrocarbons.

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Section: Community Analysismentioning

confidence: 99%