Table 1. Fatty acids profiles in planktonic and biofilm P. aeruginosa cells.

Fatty acid	retentiontime	mass (methyl esterfatty acid)	Planktonic (%)	1 day-old biofilm(%)	2 days-old biofilm(%)	6 days-old biofilm(%)
3-OH-C10∶0	13∶15	202	2.6	0.0	0.0	0.0
C12∶0	14∶11	214	2.7	0.3	0.0	0.2
2-OH-C12∶0	15∶53	230	1.2	0.2	0.0	0.0
3-OH-C12∶0	16∶16	230	2.0	2.8	0.4	3.6
12-CH3-C13∶0	16∶34	242	0.0	1.7	0.4	0.0
C14∶0	17∶02	242	1.3	2.3	0.2	0.9
13-CH3-C14∶0	17∶59	256	0.7	1.4	0.4	0.0
12-CH3-C14∶0	18∶03	256	0.0	21.0	6.3	0.0
C15∶0	18∶22	256	0.0	1.5	0.4	0.3
14-CH3-C15∶0	19∶12	270	0.0	2.3	1.2	0.2
C16∶1	19∶25	268	2.6	2.8	12.3	6.3
C16∶0	19∶42	270	64.9	28.4	39.5	45.0
15-CH3-C16∶0	20∶27	284	0.0	1.1	0.0	0.0
14-CH3-C16∶0	20∶34	284	0.0	5.1	0.4	0.0
C17∶0cyc(9,10)	20∶45	282	3.2	0.9	2.0	2.7
C17∶0	20∶53	284	0.0	1.9	1.9	0.1
16-CH3-C17∶0	21∶39	298	0.0	2.8	0.2	0.2
C18∶1	21∶51	296	13.0	15.1	30.0	34.2
C18∶0	22∶04	298	0.7	6.3	2.37	0.2
17-CH3-C18∶0	22∶53	312	0.0	2.0	0.16	0.1
C19∶0cyc(11,12)	23∶04	310	6.5	0.9	4.0	6.3
C20∶0	24∶18	326	0.0	2.8	0.1	0.0
Linear saturated fatty acids			69.5	40.0	42.2	46.4
Linear unsaturated fatty acids			15.6	17.9	42.3	40.5
Cyclic fatty acids			9.7	1.7	5.9	9.0
Branched chain fatty acids			0.7	37.5	9.1	0.6
Hydroxy fatty acids			4.5	2.8	0.4	3.6