Phylogenetic Framework and Biosurfactant Gene Expression Analysis of Marine Bacillus spp. of Eastern Coastal Plain of Tamil Nadu

Table 3

Surfactant activity of the 5 marine isolates.

Isolate	DCT	ODT	TM (mN/m)
Isolate 1	+++	+++	28 ± 3
Isolate 2	+++	+++	31 ± 2
Isolate 3	++	+	29 ± 4
Isolate 4	+++	+++	30 ± 2
Isolate 5	+++	+++	26 ± 4

(+++): excellent; (++): good; (+): average [DCT: drop collapse test; ODT: oil displacement test; TM: tensiometer measurement].