Isolation and Characterization of Biosurfactant-Producing Bacteria from Amapaense Amazon Soils

Table 5

Surface tension and emulsification index results for the bacteria in the second screening.

Codes of the isolated microorganisms	Mean ± SD
	Surface tension; σ (mN m^−1)	Emulsification index; E24 h (%)
FGU14	34.93^k ± 0.06	51.17^f ± 0.71
FGU82	36.40^hi ± 0.00	54.67^de ± 0.58
FGU92	37.37^e ± 0.06	48.27^g ± 0.47
FGU100	37.20^ef ± 0.00	52.60^ef ± 0.70
FGU101	37.27^ef ± 0.06	60.27^a ± 0.81
FGU104	35.87^j ± 0.06	47.80^g ± 0.59
FGU121	36.73^gh ± 0.06	51.43^f ± 1.37
FGF15	36.13^ij ± 0.06	59.73^ab ± 0.76
FGF17	36.93^fg ± 0.06	54.03^de ± 0.25
FGF 19	49.40^a ± 0.20	57.73^bc ± 1.15
FGF20	48.63^b ± 0.15	55.60^cd ± 1.01
PGU12	38.13^d ± 0.06	57.27^c ± 0.73
PGF34	44.60^c ± 0.46	41.03^i ± 0.30
MZU32	38.50^d ± 0.00	39.33^i ± 0.85
MZF02	34.50^l ± 0.00	43.60^h ± 0.15
Mean	38.84	51.64
Coefficient of variation	0.22	1.37

SD: standard deviation; means followed by the same case letters in the same column do not differ from each other by the Tukey test at 5% significance.