Table 3.
Characteristics of a biosensor based on P. yeei bacteria
| Analogs characteristics | Developed biosensor | Analog 1 (Arlyapov et al. 2013) | Analog 2 (Jouanneau et al. 2014) | Analog 3 (Li et al. 2016) |
|---|---|---|---|---|
| Microorganisms | P. yeei | D. hansenii | Activated sludge | P. fluorescens |
| Immobilization technique | Entrapment in PVA | Entrapment in PVA | – | Entrapment in agarose |
| Operational stability | Relative standard deviation in 15 successive measurements, % | |||
| 7 | 4.20 | – | 7.7 | |
| Long-time stability | Time within which the biosensor response to the same concentration of GGA was no less than 25% of the initial value, days | |||
| 45 | 42 | 20 | – | |
| Sensitivity | Slope of the linear segment in the dependence of the biosensor response on BOD5, × 10–4, s−1 | |||
| 35 ± 2 | 0.75 ± 0.05 | 4.8 mV dm3/mg | – | |
| Single-measurement time | Response development time and activity recovery time, min | |||
| 4–6 | 5–7 | 15 | 10–15 | |
| Detected BOD5 range | mg/dm3 | |||
| 0.05–5.0 | 0.7–206.7 | 1–10 | 5–40 | |