Materials and Methods
Isolation of the organisms: Water samples from the Karachi hot springs and ash
samples were mixed in 100ml of sterile water, agitated for 2 hours at 100 rpm, poured
and spread onto BHI agar and LB agar plates respectively (Teodoro & Martins, 2000).
The plates were incubated at 50°C for 24 hours and the colonies that appeared were
purified by streaking on BHI agar plates. The purity was further checked by gram
staining (Giffel et al., 1995)