Paracoccus sp. and culture application thereof
A paracoccus and liquid culture medium technology, applied in the field of environmental microorganisms, can solve the problems that Paracoccus does not have salt tolerance, is not suitable for high-salt wastewater treatment, and has high production costs, maintains growth characteristics and tolerance characteristics, and improves The effect of wastewater treatment and the effect of reducing cultivation cost
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[0028] Example 2 Screening and separation and purification
[0029] The method of gradually increasing the salt concentration in the culture solution was used to domesticate and cultivate the activated sludge taken from a petrochemical enterprise in Yueyang City, Hunan Province for treating the wastewater from the production of epichlorohydrin for 15 days.
[0030] The above-mentioned domesticated activated sludge is taken and preliminarily separated in the enriched medium by the method of dilution coating, thereby obtaining 15 colonies with good growth status and different characteristics. The used enrichment medium contains the main components: COD is 1000mg / L, calcium ion concentration is 1000mg / L, total salt content is 10000mg / L, and the agar content in the solid medium used is 2.0%.
[0031] Then, the obtained colonies are transferred by the method of plate streaking, and streaking is transferred to the screening medium for further separation and screening. The main components ...
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[0033] Example 3 Investigation of Salt Tolerance of Paracoccus FSTB-2
[0034] The culture method of Paracoccus FSTB-2 of the present invention includes: strain activation, liquid seed liquid culture, aeration culture, and the specific process is as follows:
[0035] (1) Strain activation: Paracoccus ( Paracoccus sp. ) FSTB-2 was inoculated into a plate containing FSTB solid medium, cultured at 35°C for 48 hours, and then stored in a refrigerator at 4°C for later use. The FSTB solid medium is: FeSO 4 • 7H 2 O 25mg / L, NH 4 NO 3 286mg / L, KCl 929mg / L, CaCl 2 2769mg / L, NaCl 21008mg / L, beef extract 5g / L, peptone 10g / L, agar 20g / L, pH 7.8.
[0036] (2) Liquid seed solution culture: prepare FSTB liquid culture medium, divide it into Erlenmeyer flasks, sterilize and cool to room temperature, use an inoculating loop to pick the activated strains from the plate in a sterile environment and inoculate them into Erlenmeyer flasks. Cultivate for 48 hours at 35°C. The FSTB liquid medium is: Fe...
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