Table 2 Emulsification and surface tension reducing activity of the biosurfactant produced by different strains over a wide range of temperature
Strain/organism | Temp. (°C) | E24 (%) | Surface tension (mN/m) | References |
|---|---|---|---|---|
P. otitidis P4 | 0 | 51.4 | 34.5 | This study |
20 | 60 | 33.5 | ||
40 | 63 | 33.4 | ||
60 | 56.2 | 33.6 | ||
80 | 59.3 | 33.5 | ||
100 | 57.5 | 34.7 | ||
Ochrobactrum 1C | 20 | 95.23 | 32.0 | Ferhat et al. (2011) |
50 | 72.72 | 32.0 | ||
70 | 85.10 | 31.0 | ||
100 | 94.0 | 30.0 | ||
Pseudomonas sp. 2B | 4 | 64.0 | 30.0 | Aparna et al. (2012) |
30 | 83.0 | 28.0 | ||
50 | 81.0 | 28.0 | ||
75 | 80.0 | 28.0 | ||
100 | 78.0 | 28.0 | ||
121 | 75.0 | 28.0 | ||
Bacillus siamensis RT10 | 0 | 49.0 | 39.0 | Varadavenkatesan and Murty (2013) |
20 | 67.0 | 38.5 | ||
30 | 70.0 | 38.0 | ||
40 | 69.9 | 37.9 | ||
50 | 68.0 | 38.0 | ||
60 | 67.5 | 38.0 | ||
70 | 67.5 | 38.0 | ||
80 | 67.0 | 38.5 | ||
90 | 65.0 | 38.5 | ||
100 | 66.0 | 38.0 | ||
121 | 67.0 | 38.0 |