Enhancing of erythromycin production by Saccharopolyspora erythraea with common and uncommon oils

  • J. Hamedi
  • F. MalekzadehEmail author
  • A. E. Saghafi-nia
Original Paper


The enhancing effect of various concentrations of 18 oils and a silicon antifoam agent on erythromycin production by Saccharopolyspora erythraea was evaluated in a complex medium containing soybean flour and dextrin as the main substrates. The oils used consisted of sunflower, pistachio, cottonseed, melon seed, water melon seed, lard, corn, olive, soybean, hazelnut, rapeseed, sesame, shark, safflower, coconut, walnut, black cherry kernel and grape seed oils. The biomass, erythromycin, dextrin and oil concentrations and the pH value were measured. Also, the kinds and frequencies of fatty acids in the oils were determined. The productivity of erythromycin in the oil-containing media was higher than that of the control medium. However, oil was not suitable as a main carbon source for erythromycin production by S. erythraea. The highest titer of erythromycin was produced in medium containing 55 g/l black cherry kernel oil (4.5 g/l). The titers of erythromycin in the other media were also recorded, with this result: black cherry kernel > water melon seed > melon seed > walnut > rapeseed > soybean > (corn = sesame) > (olive = pistachio = lard = sunflower) > (hazelnut = cotton seed) > grape seed > (shark = safflower = coconut). In media containing various oils, the hyphae of S. erythraea were longer and remained in a vegetative form after 8 days, while in the control medium, spores were formed and hyphae were lysed.


Saccharopolyspora erythraea Erythromycin Oil Morphology Fermentation 



This research was supported in part by the University of Tehran, grant 513/1/12. We are grateful to the staff of Shafa-e-Sari Antibiotic Producing Co. for their technical assistance.


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Copyright information

© Society for Industrial Microbiology 2004

Authors and Affiliations

  1. 1.Department of Biology (Microbiology), Faculty of ScienceUniversity of TehranTehranIran
  2. 2.Shafa-e-Sari Co., Antibiotic Producing Co.TehranIran

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