Isolation of microorganisms that produce Surfactant biological
samples of soil and water in the area cultivated crop or field. 3 g of the soil samples were diluted in 27 ml of distilled water and set aside to settle serial dilution. Pipette 100 μl supernatant and in the 10-3 to 10-5 spread into the blood agar plates and in the water sample dilution pipette 100 μl of serial dilution in the 10-1 to 10-3 spread on blood agar plates. incubated at 30 ºC for 18-48 hours in a colony of β-hemolysis and α-hemolysis (Carrillo et al., 1996) were re streak again on blood agar plates to obtain pure cultures. After testing different types of microbial cultures were performed using conventional biochemical test to resuspend in 0.85% NaCl measuring OD at 625 nm in the range of -0.1 0.08 adjusted diluted bacteria and turbidity of 100 μl in 5 ml Nutreint broth incubation. at room temperature for 72 hours, the sample was centrifuged at 5,000 rpm for 20 min, the supernatant to be tested next.
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