Acinetobacter sp.Bap30 capable of effectively degrading benzo(a)pyrene and application thereof

A technology of benzo and bacilli, which is applied in the field of benzo[a]pyrene high-efficiency degradation strains, can solve the problems of low biodegradation efficiency of benzo[a]pyrene, and achieve the effect of improving the degradation rate
CN102174445AInactive Publication Date: 2011-09-07PEKING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PEKING UNIV
Publication Date
2011-09-07
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a bacterium for degrading benzo(a)pyrene and application thereof. The bacterium is acinetobacter sp.Bap30, CGMCC No.4586. The strain can grow with benzo(a)pyrene as the unique carbon source and energy, undergoes shake culture at the temperature of 37 DEG C for 20 days in the inorganic salt culture medium with benzo(a)pyrene concentration being 40mg / L and has degradation rate toward benzo(a)pyrene being 28.66%. The degradation rate of the strain toward benzo(a)pyrene can be effectively improved by adding defined amount of co-metabolic carbon sources, such as cane sugar and maltose. When another polycyclic aromatic hydrocarbon phenanthrene is taken as a co-metabolic substrate and exists by being mixed with benzo(a)pyrene, the degradation rate of the strain toward benzo(a)pyrene can be improved to 48.87% and meanwhile, the strain can realize complete removal of phenanthrene. The strain provided by the invention can provide new microorganism resources for degradation of polycyclic aromatic hydrocarbons in the water environment or soil environment.
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Description

technical field

[0001] The invention relates to the field of environmental refractory organic matter treatment, in particular to a benzo[a]pyrene highly efficient degrading strain and application thereof. Background technique

[0002] Benzo[a]pyrene is an organic compound with obvious teratogenicity, carcinogenicity and mutagenicity. It is a polycyclic aromatic hydrocarbon compound composed of a benzene ring and a pyrene molecule. Benzo[a]pyrene is mainly produced from the incomplete combustion of hydrocarbons such as petroleum, coal, wood, gas fuel and paper and their thermal decomposition during the reduction process; therefore, benzo[a]pyrene is widely present in coal Tar, all kinds of carbon black, coal, petroleum, etc., in the smoke, cigarette smoke, and automobile exhaust, as well as industrial sewage such as coking, oil refining, asphalt, and plastics. Benzo[a]pyrene in surface water mainly comes from, besides industrial sewage, rainwater washing the atmosphere, leac...

Claims

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