Table 4: Chemical composition of rhamnolipid mixtures produced by Pseudomonas strains.

Rhamnolipid structure  
(m/z)
Ion fragments  
(m/z)
Pseudomonas strain
PA148HCHA4014

Mono-rhamno-di-lipid

Rha-C8-C8447Nd+---

Rha-C10-C8:1473327---+

Rha-C8:1-C10473333---+

Rha-C10-C8475333+-++

Rha-C8-C10475305+-++

Rha-C10-C10503339, 333, 169+-++

Rha-C10-C12:1529333, 195+-+-

Rha-C12:1-C10529359, 169+-+-

Rha-C10-C12531333+---

Rha-C12-C10531361+---

Di-rhamno-mono-lipid

Rha-Rha-C8451Nd+-+-

Rha-Rha-C10479Nd+-+-

Rha-Rha-C12:2503Nd+-+-

Di-rhamno-di-lipid

Rha-Rha-C8:1-C8:1589449, 309, 279, 140---+

Rha-Rha-C8-C8593451, 142+++-

Rha-Rha-C10-C8621479, 142++++

Rha-Rha-C8-C10621451, 169++++

Rha-Rha-C10-C10:1647479, 337, 309, 167-+--

Rha-Rha-C8-C12:1647451+---

Rha-Rha-C12:1-C8647505+---

Rha-Rha-C10-C10649479, 339, 309, 169++++

Rha-Rha-C11-C10665494, 309, 169++--

Rha-Rha-C10-C11665479, 309, 184++--

Rha-Rha-C10-C12:1675479, 365, 309, 195++++

Rha-Rha-C12:1-C10675505, 365, 309, 169++++

Rha-Rha-C10-C12677479, 367, 309, 197++++

Rha-Rha-C12-C10677507, 367, 309, 169++++

Rha-Rha-C12-C12:1703507, 311+---

Rha-Rha-C12:1-C12703505, 311+---

+: presence of the rhamnolipid in the extract.
-: absence of the rhamnolipid in the extract.
Nd: not detected.