In vitro Anti-fungal Activity of Various Hydroxylated Fatty Acids Bioconverted by Pseudomonas aeruginosa PR3

  • Bajpai Vivek K. (Department of Biotechnology, Daegu University) ;
  • Kim, Hak-Ryul (Department of Animal Science and Biotechnology, Kyoungpook National University) ;
  • Kang, Sun-Chul (Department of Biotechnology, Daegu University)
  • Published : 2006.12.31

Abstract

The in vitro anti-fungal activity of hydroxylated fatty acids obtained from microbial conversion by Psuedomonas aeruginosa PR3 using ricinoleic acid(RA), eicosadienoic acid(EDA) and conjugated linoleic acid(CLA) as substrates, was investigated. Bioconverted hydroxylated fatty acids showed different anti-fungal activities potentials against the range of phytopathogenic fungi such as Botrytis cinerea, Rhizoctonia solani, Fusarium oxysporum, Sclerotonia sclerotiorum, Colletotricum capsici, Fusarium solani and Phytophthora capsici. RA and EDA showed up to 50% fungal mycelial inhibition at the concentration of $5{\mu}l\;ml^{-1}$. RA, EDA and CLA also exhibited anti-fungal activities with minimum inhibitory concentration(MIC), ranging from 500 to $1000{\mu}g\;ml^{-1}$. Screening was also carried out using varied concentrations of bioconverted RA and EDA for determining the anti-fungal effect on the spore germination of different fungi. Bioconverted RA and EDA showed a considerable degree of spore germination inhibition.

Keywords

References

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