Table 1 List of BS/BE producers obtained from the screening of 23 desert bacterial isolates grown on MSM with 2%w/v glucose as carbon source. Emulsification index (EI24%) and interfacial surface tension (IFT) values are expressed and mean value ± SD of two and three replicates, respectively, while drop collapse results as positive (+) or negative (−)
Isolate ID | 16SrDNA Accession No | Closest type strains (GenBank Accession No) | 16S rDNA identity (%) | Drop collapse | IFT (mN/m) | EI24 (%) | ||
|---|---|---|---|---|---|---|---|---|
Toluene | Hexane | Hexadecane | ||||||
Bacillus sp. L37 | MG594627 | Bacillus endophyticus (NR_025122) | 99 | + | 69.28 ± 0.31 | 57.63 ± 4.24 | 56.07 ± 2.18 | 61.11 ± 1.92 |
Bacillus sp. L45 | MG594628 | Bacillus endophyticus (NR_025122) | 99 | − | 70.00 ± 0.47 | 52.53 ± 1.14 | 59.67 ± 1.48 | 53.33 ± 9.43 |
Paenibacillus tarimensis L88 | KF111690 | Paenibacillus tarimensis (NR_044102) | 99 | − | 74.45 ± 0.16 | 44.64 ± 2.06 | 50.93 ± 1.07 | 48.32 ± 6.27 |
Bacillus sp. L97b | MG594634 | Bacillus endophyticus (NR_025122) | 99 | − | 72.48 ± 0.36 | 57.64 ± 3.67 | 53.11 ± 5.13 | 47.36 ± 8.45 |
Bacillus sp. L98 | MG594631 | Bacillus licheniformis (NR_118996) | 99 | + | 55.07 ± 0.26 | 48.82 ± 6.06 | 50.83 ± 2.18 | 46.43 ± 5.05 |
Bacillus sp. N3 | MG594629 | Bacillus subtilis subsp. spizizenii (NR_112686) | 99 | + | 36.86 ± 1.11 | 50.81 ± 2.17 | 34.84 ± 3.21 | 51.67 ± 7.07 |
Bacillus sp. R4p | MG594635 | Bacillus mojavensis (NR_112725) | 99 | + | 28.99 ± 0.35 | 55.67 ± 6.95 | 44.91 ± 4.96 | 28.57 ± 0.00 |
Bacillus sp. R39 | MG594626 | Bacillus mojavensis (NR_112725) | 99 | + | 28.36 ± 0.63 | 11.15 ± 0.00 | 5.30 ± 2.26 | 0.00 ± 0.00 |
Bacillus sp. R40 | MG594633 | Bacillus frigoritolerans (NR_115064) | 99 | − | 70.25 ± 0.46 | 52.12 ± 7.54 | 44.90 ± 4.52 | 58.33 ± 2.36 |
Bacillus sp. R43 | MG594630 | Bacillus mojavensis (NR_112725) | 99 | + | 28.57 ± 0.76 | 26.67 ± 1.33 | 32.69 ± 6.78 | 11.51 ± 2.59 |
Bacillus sp. R55 | MG594632 | Bacillus frigoritolerans (NR_115064) | 99 | − | 71.10 ± 0.85 | 59.98 ± 2.54 | 49.20 ± 2.92 | 53.77 ± 8.08 |