SHANDONG SCIENCE ›› 2015, Vol. 28 ›› Issue (2): 75-80.doi: 10.3976/j.issn.1002-4026.2015.02.013

• Environment and Ecology • Previous Articles     Next Articles

Isolation, identification and optimization of growth conditions of a strain of phenanthrene degrading bacteria

HUANG Yujie, QIU Weizhong, GAO Yongchao, KONG Xue, ZHANG Wen, WANG Jianing   

  1. Shandong Provincial Key laboratory of Applied Microbiology, Biotechnology Center, Shandong Academy of Sciences, Jinan 250014,China
  • Received:2014-07-23 Online:2015-04-20 Published:2015-04-20

Abstract: A phenanthrene degradable strain SP3 was isolated from petrolcontaminated soil. It was roughly identified as Mycobacterium sp.through physiological and biochemical identification and contrast analysis of 16S rDNA sequences. Phenanthrene could be served as its unique carbon source.The degradation rate is more than 99% in such conditions as mineral salt medium of phenanthrene concentration of 100 μg/mL,shaking culture of 28 ℃ and 7 days. We discovered that optimal culture medium of strain SP3 included starch of 1%, beef extract of 1%,Na2HPO4 of 0.2%and NaH2PO4 of 0.2%. We determined its optimum culture conditions of temperature of 30 ℃, initial pH of 7.5 and culture time of 12 h through single factor experiment.

Key words: optimization of medium, degradation, phenanthrene, PAHs

CLC Number: 

  • X53