7/26/2019 Light Conditions Affect Directly the Growing and
Photosynthesis of Microalgae
1/2
Light conditions afect directly the growing and photosynthesis o
microalgae(Duration and intensity). Microalgae needs a light/dark
regime or productive
photosynthesis, it needs light or a photochemical phase to
produce (!")
denosine triphosphate (#D"$) #icotinamide adenine dinucleotide
phosphate%o&idase) and also needs dark or 'iochemical phase
synthesie essential molecules
or growth. arvalho ., et. al., *++, studied light re-uirements
in microalgalphotoreactors. !hey noticed that cultivating
microalgae in photo'ioreactors ("s)
should 'e provided with appropriate light duration, intensity
and wavelength.0nsu1cient light may lead to growth limiting or
photoo&idation and inhi'ition.
ochet M., et. al., 234, studied certain conditions in southern
$udson ay
(anadian rctic) rom March to May 235 to o'serve the response o
sea%icemicroalgae to diferent changes in light intensity and
-uality.
6hen algal growth was incu'ated under 'lue light it dou'led as
compared to the
growth under white light. ccording to the availa'ility o 'lue
green lightenvironment ice algae had adaptive response to it and
showed high concentration
o chlorophyll. 7n the other hand the same algae responded to
light spectrum when
in incu'ated under white illumination 'y increasing their
chlorophyll. 8!he a'ility tochromatically adapt may 'ecome a
critical actor in species competition8.
!he productivity o microalgae can 'e enhanced 'y cultivating the
culture under
light emitting diodes (L9Ds) with peak emittance of 680 nm, this
will result indou'ling the num'er o cells produced without changing
the cell volume then the
culture is e&posed to white light in order to enlarge the
cells sie so the overall
'iomass will increase.
http://rscc.umn.edu/rscc/v*m*/*;what%is%'ue%light)
http://www.reecentral.com/orums/showthread.php?t@ABB322C
http://prntscr.com/'cdyi% or image 'elow
http://rscc.umn.edu/rscc/v2m2/2_5.htmlhttp://www.reefcentral.com/forums/showthread.php?t=744899http://prntscr.com/bczdyihttp://www.reefcentral.com/forums/showthread.php?t=744899http://prntscr.com/bczdyihttp://rscc.umn.edu/rscc/v2m2/2_5.html
