Effect of various stress-regulatory factors on biomass and lipid production in microalga Haematococcus pluvialis

SK Saha, E McHugh, J Hayes, S Moane, D Walsh… - Bioresource …, 2013 - Elsevier
SK Saha, E McHugh, J Hayes, S Moane, D Walsh, P Murray
Bioresource technology, 2013Elsevier
To maximize the biomass and lipid production for applications in food or biofuel feedstock,
nine stress conditions were tested considering N and/or P limitations, light intensity & quality,
for Haematococcus pluvialis SCCAP K-0084 cultivation. Photosynthetically active radiation
(PAR), warm white light emitting diode (WWLED), and white light emitting diode (WLED) at
illumination of 240μmol photons m− 2 sec− 1 were the best stress-regulatory factors. PAR
without P & low N conditions yielded high biomass with 33% lipids containing increased …
To maximize the biomass and lipid production for applications in food or biofuel feedstock, nine stress conditions were tested considering N and/or P limitations, light intensity & quality, for Haematococcus pluvialis SCCAP K-0084 cultivation. Photosynthetically active radiation (PAR), warm white light emitting diode (WWLED), and white light emitting diode (WLED) at illumination of 240μmol photons m−2 sec−1 were the best stress-regulatory factors. PAR without P & low N conditions yielded high biomass with 33% lipids containing increased C16:0 and C18:0 saturated fatty acids, and reduced unsaturated fatty acids (UFAs) (oleic, linoleic, and α/γ-linolenic). WWLED and WLED without P conditions also yielded high biomass, but 25% lipids with increased amounts of UFAs. Red light emitting diode (RLED) without P & low N conditions yielded 46% lipids with lowest biomass. PAR and WWLED & WLED illuminated conditions were found suitable respectively for biodiesel feedstock lipids and UFA-rich lipids for multiple applications.
Elsevier
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