BioChem - DOS

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

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Saha, S.K.; McHugh, E.; Hayes, J.; Moane, S.; Walsh, D.; Murray, P.

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 &amp; 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 240&mu;mol photons m<SUP>-2</SUP> sec<SUP>-1</SUP> were the best stress-regulatory factors. PAR without P &amp; 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 &alpha;/&gamma;-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 &amp; low N conditions yielded 46% lipids with lowest biomass. PAR and WWLED &amp; WLED illuminated conditions were found suitable respectively for biodiesel feedstock lipids and UFA-rich lipids for multiple applications.

2013

Elsevier Applied Science

0960-8524

128

pp.118-124

10.1016/j.biortech.2012.10.049

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65418619

Haematococcus pluvialis; Stress conditions; Biomass; Feedstock lipids; UFA-rich lipids