Cuny P, Faucet J, Acquaviva M, Bertrand J C, Gilewicz M
Laboratoire d'Océanographie et de Biogéochimie, Centre d'Océanologie de Marseille, France.
Lett Appl Microbiol. 1999 Oct;29(4):242-5. doi: 10.1046/j.1365-2672.1999.00623.x.
The biodegradation of phenanthrene by the marine strain Sphingomonas sp. 2MPII (DSMZ 11572) was enhanced by the solubilizating properties of the nonionic surfactant Tween 80. After 197 h of incubation, 85 +/- 4% of the initial amount of phenanthrene (0.4 g l-1) was biodegraded in presence of Tween 80 (0.5 g l-1) as opposed to 52 +/- 5% without this synthetic surfactant. These results confirm that the activity of the strain 2MPII is limited by the bioavailability of the polycyclic aromatic hydrocarbon (PAH) substrate in the aqueous phase. Tween 80 appears to be efficient in increasing the bioavailability of hydrophobic compounds such as PAHs.
海洋菌株鞘氨醇单胞菌属（Sphingomonas sp.）2MPII（DSMZ 11572）对菲的生物降解作用因非离子表面活性剂吐温80的增溶特性而得到增强。培养197小时后，在存在吐温80（0.5 g l-1）的情况下，菲的初始量（0.4 g l-1）有85±4%被生物降解，而在没有这种合成表面活性剂时这一比例为52±5%。这些结果证实，2MPII菌株的活性受到水相中多环芳烃（PAH）底物生物可利用性的限制。吐温80似乎在提高诸如PAHs等疏水性化合物的生物可利用性方面很有效。
