Table 1. Characterisation of thermophilic bacteria isolated from various environments and evaluation of their cellulase activity.
| Source | Strain | Isolation temperature/ °C |
Morphology | d(clearing zone)/mm | Hydrolysis capacity d(clearing zone)/ d(colony) |
|
|---|---|---|---|---|---|---|
| Geothermal karst spring (Iceland) |
BWO1 | 50 | Gram-positive, rod-shaped | 43.4±0.9 | 1.05 | |
| BWO2 | 50 | Gram-positive, rod-shaped | ND | - | ||
| BWO3 | 50 | Gram-positive, rod-shaped | ND | - | ||
| BWO4 | 50 | Gram-positive, rod-shaped | ND | - | ||
| BWO5 | 50 | Gram-positive, rod-shaped | 48.0±1.4 | 1.08 | ||
| BWO6 | 60 | Gram-positive, rod-shaped | ND | - | ||
| BWO7 | 60 | Gram-positive, rod-shaped | 35.4±2.1 | 1.18 | ||
| BWO8 | 60 | Gram-positive, rod-shaped | ND | - | ||
| Hot spring (Iceland) | BGR1 | 50 | Gram-positive, rod-shaped | 18.7±0.8 | 1.09 | |
| BGR2 | 60 | Gram-positive, rod-shaped | 35.4±1.4 | 1.14 | ||
| BGR3 | 50 | Gram-positive, rod-shaped | 44.6±1.9 | 1.04 | ||
| BGR4 | 50 | Gram-positive, rod-shaped | 44.4±0.3 | 1.06 | ||
| BGR5 | 50 | Gram-positive, rod-shaped | 44.7±1.1 | 1.09 | ||
| BGR6 | 50 | Gram-positive, rod-shaped | 38.1±0.6 | 1.01 | ||
| BGR7 | 50 | Gram-positive, rod-shaped | 37.8±0.8 | 1.01 | ||
| BGR8 | 60 | Gram-positive, rod-shaped | ND | - | ||
| BGR9 | 60 | Gram-positive, rod-shaped | ND | - | ||
| Geothermal pond (Blue Lagoon, Iceland) | BBLN1 | 50 | Gram-positive, rod-shaped | 24.2±4.5 | 2.74 | |
| BBLN2 | 50 | Gram-positive, rod-shaped | 21.1±0.2 | 1.12 | ||
| BBLN3 | 50 | Gram-positive, rod-shaped | 32.1±1.6 | 1.17 | ||
| BBLN4 | 50 | Gram-positive, rod-shaped | 36.8±1.0 | 1.08 | ||
| BBLN5 | 50 | Gram-positive, rod-shaped | 39.7±1.2 | 1.04 | ||
| BBLN6 | 50 | Gram-positive, rod-shaped | 26.9±2,3 | 1.03 | ||
| BBLN7 | 60 | Gram-positive, rod-shaped | ND | - | ||
| Fermenting hay (Zgierz, Poland) | BSO1 | 50 | Gram-positive, rod-shaped | 35.6±0.9 | 1.15 | |
| BSO2 | 50 | Gram-positive, rod-shaped | NG | - | ||
| BSO3 | 50 | Gram-positive, rod-shaped | ND | - | ||
| BSO4 | 50 | Gram-negative, rod-shaped | NG | - | ||
| BSO5 | 50 | Gram-positive, rod-shaped | NG | - | ||
| BSO6 | 50 | Gram-negative, rod-shaped | 12.7±2.0 | 1.62 | ||
| BSO7 | 50 | Gram-positive, rod-shaped | 29.6±1.5 | 1.23 | ||
| BSO8 | 50 | Gram-negative, rod-shaped | ND | - | ||
| BSO9 | 50 | Gram-positive, rod-shaped | 32.0±0.6 | 1.19 | ||
| BSO10 | 50 | Gram-positive, rod-shaped | 25.9±1.2 | 1.30 | ||
| BSO11 | 50 | Gram-positive, rod-shaped | 41.8±1.0 | 1.09 | ||
| BSO12 | 50 | Gram-positive, rod-shaped | ND | - | ||
| BSO13 | 50 | Gram-positive, rod-shaped | 28.1±1.0 | 1.38 | ||
| BSO14 | 50 | Gram-positive, rod-shaped | 29.3±0.2 | 8.02 | ||
| 1BSO15 | 50 | Gram-positive, rod-shaped | 40.1±0.9 | 1.05 | ||
| BSO16 | 50 | Gram-positive, rod-shaped | 32.9±0.8 | 1.07 | ||
ND=clearing zone was not observed, NG=strain did not grow