World Journal of Microbiology and Biotechnology

, Volume 30, Issue 4, pp 1169–1175 | Cite as

Effect of octanal on the mycelial growth of Penicillium italicum and P. digitatum

  • Nengguo TaoEmail author
  • Lei Jia
  • Haien Zhou
  • Xiangli He
Original Paper


The present study investigated the antifungal activity of octanal against Penicillium italicum and P. digitatum. Results showed that octanal exhibited strong antifungal activity against the test pathogens in a dose-dependent manner. Scanning electron microscopy observation revealed that octanal obviously altered the morphology of P. italicum and P. digitatum hyphae by causing the loss of cytoplasm and distortion of mycelia. A rapid increase in the membrane permeability of P. italicum and P. digitatum was observed after treated with octanal at minimum inhibitory concentration or minimum fungicidal concentration, evidenced by the release of cell constituents, the extracellular conductivity and the extracellular potential of hydrogen. In addition, octanal apparently induced a decrease in total lipid contents of P. italicum and P. digitatum cells. These results suggested that the antifungal activity of octanal against P. italicum and P. digitatum can be attributed to the disruption of the cell membrane integrity and the leakage of cell components.


Antifungal activity Cell membrane integrity Octanal P. digitatum P. italicum 



This work was supported by National Natural Science Foundation of China (No. 31271964), Research Foundation of Education Bureau of Hunan Province (No.12B126) and National University Student Innovation Programs of China (No. 201210530012).


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Copyright information

© Springer Science+Business Media Dordrecht 2013

Authors and Affiliations

  1. 1.School of Chemical EngineeringXiangtan UniversityXiangtanPeople’s Republic of China

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