Method for screening phenanthrene polycyclic aromatic hydrocarbon degrading bacteria
A polycyclic aromatic hydrocarbon and degrading bacteria technology, applied in the field of microbial degradation, can solve the problems of cumbersome operation process, poor solubility, pollution, etc., achieve high chemical stability, low biodegradability, and reduce toxicity
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[0033] 1. To screen phenanthrene-like PAH-degrading bacteria, the steps are:
[0034] (1) Take 1 g of the soil near the gas station and put it in 100 mL of LB liquid medium containing 300 mg / L crystal violet, and cultivate it with shaking at 30 °C and 170 r / min for 24 hours;
[0035] (2) Take 100 μL of the liquid in step (1) and dilute it according to the concentration gradient, then take 50 μL and spread it on an LB plate containing 300 mg / L crystal violet, and incubate it upside down at 30°C for 24 hours;
[0036] (3) Observe the LB plate of step (2), pick 2 single colonies with colorless circles, put each single colony into a liquid LB test tube, and culture on a shaker at 30°C and 170r / min for 16 hours;
[0037] (4) Detect decolorization rate, step is:
[0038] A1. Configure blank control sample 15mL, the concentration of PBS in this sample is 0.01M, the volume fraction of LB liquid medium is 10%, namely the LB liquid medium added is 1.5mL;
[0039] B1. Configure 15 mL o...
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