Lipid Accumulation Studies In Chlorella Pyrenoidosa Using Customized Photobioreactor- Effect of Nitrogen Source, Light Intensity and Mode of Operation

نویسندگان

  • Rajasri Yadavalli
  • Ramgopal Rao
  • C. S. Rao
چکیده

Lipid productivity of Chlorella pyrenoidosa was studied in a customized laboratory scale photobioreactor. Lipid yield increased when C. pyrenoidosa was subjected to stress conditions like different nitrogen sources, light intensities and modes of cultivation. It was observed that the growth rate of C. pyrenoidosa was directly proportional to light intensity and nitrogen concentrations. Of the two nitrogen sources tested, sodium nitrate proved better than urea in terms of lipid yield. The study also demonstrated that at lower nitrogen concentrations fed batch mode of cultivation resulted in maximum lipid productivity of 0.103 g/d.l at 135 μmol m -2 s -1 when compared to batch mode.

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تاریخ انتشار 2012