Inverse relationship between carotenoid and lipid formation in Rhodotorula gracilis according to the C/N ratio of the growth medium

  • D. Somashekar
  • R. Joseph


Production of carotenoid by Rhodotorula gracilis was highest at 26 mg/g dry weight with a carbon/nitrogen (C/N) ratio in the medium of 10:1. This was 15 times higher than when the C/N ratio was 160:1. With this high C/N ratio, the yeast produced up to 55% lipid compared only 20% lipid with the low C/N ratio. Both carotenoid and lipid production were non-growth associated.

Carotenoids C/N ratio lipid Rhodotorula 


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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • D. Somashekar
    • 1
  • R. Joseph
    • 1
  1. 1.Department of Food MicrobiologyCentral Food Technological Research InstituteMysoreIndia

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