TABLE 1.
Effect of PEG-cell interactions on fatty acid compositiona
| Fatty acid | Mean ± SE (%) fatty acid content
|
|
|---|---|---|
| Basal medium | −1.0-MPa PEG-amended medium | |
| 16:1 ω7c | 5.45 ± 0.46 | 5.58 ± 2.47 |
| 16:1 ω7t | 6.64 ± 0.28 | 8.16 ± 1.81 |
| 17:0 cyclo | 18.70 ± 0.96 | 15.28 ± 4.46 |
| 18:1 ω7c | 15.18 ± 0.95 | 10.39 ± 0.02 |
| 18:1 ω7t | 0.00 ± 0.00 | 4.75 ± 0.23 |
| trans:cis ratio | 0.32 ± 0.01 | 0.81 ± 0.04 |
a
A 1,000-MW exclusion membrane was placed between solid medium containing PEG or NaCl (data not shown) and a nylon membrane, which served as a surface for bacterial growth.