International Scholarly Research Notices

Research Article

Production of a Lipopeptide Biosurfactant by a Novel Bacillus sp. and Its Applicability to Enhanced Oil Recovery

Table 2

Summary of the screening tests for biosurfactant producers.
Isolate nos.
Screening tests
OSTBAHTDCTCTABTGSTST
(cm)(cm)(cm)(Green halo)(+/−)(mN/m)
RT12.02.20.4n.o.+62.3
RT22.53.11.1n.o. −39.7
RT31.31.80.2Green halo+37.6
RT42.42.61.6n.o.−42.6
RT51.71.51.3n.o.−59.5
RT61.02.50.5n.o.+48.8
RT72.73.01.2n.o.−53.2
RT81.42.50.4Green halo+42.1
RT91.71.90.0n.o.−60.0
RT103.03.51.7n.o.−29.8
RT112.12.80.5n.o.−64.6
OST: oil spreading technique; BAHT: blood agar Hemolysis test; DCT: drop collapse test;CTAB: CTAB agar plate test;TGST: tilting glass slide test; ST: surface tension; n.o.: not observed; “+”: flow observed; “−”: flow not observed.