EFFECT OF LIGHT WAVELENGTH, INTENSITY AND QUALITY PROMOTES EFFICIENT GROWTH OF CHLORELLA MARINA

Author(s): Thanappan V, Suba Sankari K, Sarangi RK, Anantharaman P*

Abstract: The growth of green algae Chlorella marina under the influence of three kinds of fluorescent lights was investigated in batch culture conditions. Five light intensities (20, 30, 40, 50, 60 and 80 µmol ·m –2 ·s –1) of the three lights, viz., blue, green and red were evaluated. The effect of light intensity and its quality explicated the specific growth rate, spectrum absorption coefficient and saturated light intensity of fluorescent lights. The procured results showed that the growth rates of Chlorella marina increase with the enhanced light intensity. However, there was inhibition of Chlorella marina growth was observed beyond the saturation light intensity. Further, in comparison with red and green light, the growth rate of Chlorella marina under blue light was found to be higher within saturated light intensity. In addition, the saturated light intensity of florescent lights was lower under blue light. Whereas it was found to be higher under green light.

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