Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Plant Oils for Improving Thermotolerance of Beauveria bassiana

  • Kim, Jae-Su (Entomology Research Laboratory, University of Vermont) ;
  • Skinner, Margaret (Entomology Research Laboratory, University of Vermont) ;
  • Parker, Bruce L. (Entomology Research Laboratory, University of Vermont)
  • Received : 2010.05.13
  • Accepted : 2010.06.23
  • Published : 2010.09.28
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Abstract

Conidia of Beauveria bassiana ARSEF-7060, produced in millet amended with plant oils such as sunflower, corn, or cotton seed oil, were exposed to $45^{\circ}C$ of wet heat for 90 min. Conidia from millet+corn oil medium had the highest thermotolerance [$LT_{50}$ (median survival time): 45.7 min]. The mycotized millet grains were coated with each of the same plant oils as a granular formulation and subjected to $50^{\circ}C$ of dry heat for 8 h. Corn oil coating ($LT_{50}$: 8.68 h) was superior to sunflower and cotton seed oil coatings, suggesting the feasibility of using corn oil to increase conidial thermotolerance.

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References

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