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A Novel Biophotonic Based Biofeedback System for Enhancing Photosynthetic Efficiency of Algae and Higher Plants
University of Georgia Research Foundation
posted on 07/12/2010
It has been known for sometime that “Flashing Light Effect” (FLE) in photosynthesis can enhance the light
utilization efficiency leading to better productivity of plants. The use of FLE aims to provide just enough
illumination density to effectively excite the greatest majority of light harvesting complexes in plant (to attain
the maximum rate of growth, production of carbohydrates and organic acids), while simultaneously
minimizing trapped surplus light, which renders losses in the form of heat and fluorescence, negatively impacting
growth and productivity, through “photo‐inhibition” mechanisms. FLE has only minimally been studied
in connection with microalgae and it has not been explored as a means to increase biomass productivity
aiming the production of biofuels and specialty chemicals.
Suggested Uses
High‐volume algal growth and harvest, for the production of bio‐oils, esters and commodity chemicals
and biochemicals, as well as nutritional supplements and animal feed
Advantages
Inexpensive easily implemented
• Compatible with any species of microalgae (Chlorella, Anabaena, Spirulina, etc.)
• Will not demand regulatory review by government agencies
• Eliminates inhibitory effects of continuous illumination
• Can be used throughout the entire depth, width and length of a raceway
• Compatible with use of nutrients and growth stimulants
Detailed Description
Dr. Das group at UGA has developed a method for the optimized use of FLE for the stimulated growth of
multiple species of microalgae. Selection of frequency of FLE and appropriate wavelength of light used in
FLE experiments allowed for the determination optimal parameters for maximum stimulation and growth of
algae, while minimizing waste heat dissipation and undesirable side‐fluorescence. The method allows for
maximum stimulation without producing the inhibition‐causing oversaturation by light of the microalgae.
The method led to development of a device that allows for use of this technique through the entire depth
and width or ponds/raceways, leading to uniform stimulation and growth.
File Number: 1511
Other Information:
Patent pending
This innovation currently is not available for online licensing. Please contact Gennaro Gama at University of Georgia Research Foundation for more information.
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