Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress
Bacillus aerius S1 and Brevibacterium iodinum S2 showed maximum growth at 37 °C and pH 8. B. aerius and B. iodinum could resist Cr6+ upto 30 and 35 mM and biosorption proficiency (q) of B. aerius S1 was 19, 27, 52 and 34 mM/g while for B. iodinum S2, it was 39, 50, 23 and 16 mM/g mM/g after 2, 4, 6...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-03-01
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| Series: | Biotechnology Reports |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2215017X18302194 |
| _version_ | 1828811887216689152 |
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| author | Amina Elahi Abdul Rehman |
| author_facet | Amina Elahi Abdul Rehman |
| author_sort | Amina Elahi |
| collection | DOAJ |
| description | Bacillus aerius S1 and Brevibacterium iodinum S2 showed maximum growth at 37 °C and pH 8. B. aerius and B. iodinum could resist Cr6+ upto 30 and 35 mM and biosorption proficiency (q) of B. aerius S1 was 19, 27, 52 and 34 mM/g while for B. iodinum S2, it was 39, 50, 23 and 16 mM/g mM/g after 2, 4, 6 and 8 days of incubation. A pronounced rise in antioxidant enzymes activities was determined in B. aerius S1 i.e. POX (963%), CAT (717%), APOX (699%), SOD (683%), and GST (792%). However, in B. iodinum S2, relatively a minor increase was estimated. A significant GSH increase was determined in B. aerius S1 (364%) and B. iodinum S2 (663%) cultures under 2 mM Cr6+ stress. Pilot scale study demonstrated that both strains could reduce Cr6+ into Cr3+ within 6 days from the original tannery effluent with efficiency of 99%. Keywords: Chromium resistant bacteria, Antioxidant enzymes, Glutathione, FTIR, Bioremediation |
| first_indexed | 2024-12-12T09:35:05Z |
| format | Article |
| id | doaj.art-946993b6ab3f4b40bea491a42b5b6b3c |
| institution | Directory Open Access Journal |
| issn | 2215-017X |
| language | English |
| last_indexed | 2024-12-12T09:35:05Z |
| publishDate | 2019-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Biotechnology Reports |
| spelling | doaj.art-946993b6ab3f4b40bea491a42b5b6b3c2022-12-22T00:28:45ZengElsevierBiotechnology Reports2215-017X2019-03-0121Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stressAmina Elahi0Abdul Rehman1Department of Microbiology and Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, PakistanCorrespondence author.; Department of Microbiology and Molecular Genetics, University of the Punjab, New Campus, Lahore 54590, PakistanBacillus aerius S1 and Brevibacterium iodinum S2 showed maximum growth at 37 °C and pH 8. B. aerius and B. iodinum could resist Cr6+ upto 30 and 35 mM and biosorption proficiency (q) of B. aerius S1 was 19, 27, 52 and 34 mM/g while for B. iodinum S2, it was 39, 50, 23 and 16 mM/g mM/g after 2, 4, 6 and 8 days of incubation. A pronounced rise in antioxidant enzymes activities was determined in B. aerius S1 i.e. POX (963%), CAT (717%), APOX (699%), SOD (683%), and GST (792%). However, in B. iodinum S2, relatively a minor increase was estimated. A significant GSH increase was determined in B. aerius S1 (364%) and B. iodinum S2 (663%) cultures under 2 mM Cr6+ stress. Pilot scale study demonstrated that both strains could reduce Cr6+ into Cr3+ within 6 days from the original tannery effluent with efficiency of 99%. Keywords: Chromium resistant bacteria, Antioxidant enzymes, Glutathione, FTIR, Bioremediationhttp://www.sciencedirect.com/science/article/pii/S2215017X18302194 |
| spellingShingle | Amina Elahi Abdul Rehman Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress Biotechnology Reports |
| title | Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress |
| title_full | Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress |
| title_fullStr | Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress |
| title_full_unstemmed | Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress |
| title_short | Comparative behavior of two gram positive Cr6+ resistant bacterial strains Bacillus aerius S1 and Brevibacterium iodinum S2 under hexavalent chromium stress |
| title_sort | comparative behavior of two gram positive cr6 resistant bacterial strains bacillus aerius s1 and brevibacterium iodinum s2 under hexavalent chromium stress |
| url | http://www.sciencedirect.com/science/article/pii/S2215017X18302194 |
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