Highlighting the Potency of Biosurfactants Produced by Pseudomonas Strains as Anti-Legionella Agents

Table 3

Pseudomolecular ions and main product ions obtained in positive mode from ESI-MSn (n=1, 2) analyses of purified active HPLC fractions from ethyl acetate extract of Pseudomonas sp. cell-free supernatants.

Producing strain	Name	[M+H]^+	Main product ions in MS-MS (m/z)	Rt [min]	Relative area ()	Anti-L. pneumophila activity	Reference
P. putida MFAF88	Putisolvin I	1380.7	454; 567; 863; 927; 1040; 1169	14.7	76.6	+	[20]
	Putisolvin II	1394.7	1054; 1183	15.7	23.4	-
P. fluorescens PfA7b	Massetolide E	1112.6	496; 595; 829; 700	13.9	54.8	+	[37]
	Viscosin/Massetolide F	1126.6	496; 595; 714; 843	14.8	45.2	+
P. fluorescens MFAD21c	PPZPM-1a	1253.8	284; 496; 609; 970; 1235	11.2	61.7	+	[38]
	PPZPM-2a	1239.8	284; 496; 595; 956; 1221	12.2	38.3	+
P. fluorescens MFAH4a	PPZPM-1a	1253.8	284; 496; 609; 970; 1235	11.2	53.1	+	[38]
	PPZPM-2a	1239.8	284; 496; 595; 956; 1221	12.1	46.9	+
P. sp DSS73	Amphisin	1395.6	482; 595; 997; 1112	12.5	78.4	+	[39, 40]
	Amphisin-like	1384.7	482; 595; 997; 1098	11.9	18.2	-
	Tensin	1409.5	482; 595; 1011; 1026	13.2	3.4	-
P. fluorescens MFAO2	Amphisin	1395.6	482; 595; 997; 1112	12.7	6.1	-	[39, 40]
	Tensin	1409.8	482; 595; 1011; 1026	13.2	93.9	+