Table 4.

Chemical composition of rhamnolipid mixtures produced by Pseudomonas strains.

Rhamnolipid structure	[M-H]−   (m/z)	Ion fragments   (m/z)	Pseudomonas strain
			PA14	8H	CHA	4014
Mono-rhamno-di-lipid
Rha-C8-C8	447	Nd	+	-	-	-
Rha-C10-C8:1	473	327	-	-	-	+
Rha-C8:1-C10	473	333	-	-	-	+
Rha-C10-C8	475	333	+	-	+	+
Rha-C8-C10	475	305	+	-	+	+
Rha-C10-C10	503	339, 333, 169	+	-	+	+
Rha-C10-C12:1	529	333, 195	+	-	+	-
Rha-C12:1-C10	529	359, 169	+	-	+	-
Rha-C10-C12	531	333	+	-	-	-
Rha-C12-C10	531	361	+	-	-	-
Di-rhamno-mono-lipid
Rha-Rha-C8	451	Nd	+	-	+	-
Rha-Rha-C10	479	Nd	+	-	+	-
Rha-Rha-C12:2	503	Nd	+	-	+	-
Di-rhamno-di-lipid
Rha-Rha-C8:1-C8:1	589	449, 309, 279, 140	-	-	-	+
Rha-Rha-C8-C8	593	451, 142	+	+	+	-
Rha-Rha-C10-C8	621	479, 142	+	+	+	+
Rha-Rha-C8-C10	621	451, 169	+	+	+	+
Rha-Rha-C10-C10:1	647	479, 337, 309, 167	-	+	-	-
Rha-Rha-C8-C12:1	647	451	+	-	-	-
Rha-Rha-C12:1-C8	647	505	+	-	-	-
Rha-Rha-C10-C10	649	479, 339, 309, 169	+	+	+	+
Rha-Rha-C11-C10	665	494, 309, 169	+	+	-	-
Rha-Rha-C10-C11	665	479, 309, 184	+	+	-	-
Rha-Rha-C10-C12:1	675	479, 365, 309, 195	+	+	+	+
Rha-Rha-C12:1-C10	675	505, 365, 309, 169	+	+	+	+
Rha-Rha-C10-C12	677	479, 367, 309, 197	+	+	+	+
Rha-Rha-C12-C10	677	507, 367, 309, 169	+	+	+	+
Rha-Rha-C12-C12:1	703	507, 311	+	-	-	-
Rha-Rha-C12:1-C12	703	505, 311	+	-	-	-

+: presence of the rhamnolipid in the extract.

-: absence of the rhamnolipid in the extract.

Nd: not detected.