Biomass production and nutrient uptake by Neochloris oleoabundans in an open trough system

Abstract

The purpose of this paper is to present biomass and nutrient uptake data from Neochloris oleoabundans production in an open trough system. The growth medium used was BG11, temperature ranged from 16.7 °C to 25.3 °C, and pH ranged from 5.52 to 9.94 because the customary pH increase during algal biomass production was moderated by incoming CO(2) gas streams (atmospheric, 2%, 4%, and 6% CO(2)). Peak concentrations of algal biomass ranged from 643 to 970 mg L(-1), specific growth rates ranged from 0.15 to 0.37 day(-1), and doubling times ranged from 4.8 to 1.9 days. Carbon, nitrogen, and phosphorus were incorporated into the biomass at 0.05%, 8.3%, and 54% of supplied amounts. Open growth systems supplemented with CO(2) should be designed to regulate medium pH within the range of 6.3 to 7.1. Future research should examine various media and alternative carbon sources to decrease doubling times, increase peak concentrations, and optimize nutrient uptake.

Influence of photoperiods on the growth rate and biomass productivity of green microalgae

“…obliquus reproduce exclusively by autospores [23], while the species from the genus Neochloris reproduce by aplanospores or motile zoospores released from cells in darkness [24, 25]. So far, only N.   oleoabundans has been the object of detailed investigations due to its valuable features [26]. The other unicellular species of the green coccoid algae from the genus Neochloris ( N.   terrestris , N.   texensis , N.   conjuncta ), examined for the first time in this study and exhibiting two modes of reproduction dependent on light conditions, seem to be promising prospective objects for algal biotechnology.…”

Multiplex fluorometric assessment of nutrient limitation as a strategy for enhanced lipid enrichment and harvesting of Neochloris oleoabundans

“…Under conditions of nitrogen limitation and lacking CO 2 supplementation, N. oleoabundans has been found to attain lipid contents up to 56% of the cell basis (Gouveia et al, 2009). Furthermore, N. oleoabundans has been successfully cultivated both in photobioreactors (Pruvost et al, 2009) and open outdoor systems (Murray et al, 2011) with a variety of nitrogen sources (Li et al, 2008), recently including anaerobically digested dairy effluent (Levine et al, 2011). Extensive efforts have been applied to characterizing the lipid profile of alga of interest for feed, nutrition, cosmetics, and biofuels (Alonso et al, 2000; Reitan et al, 1994).…”

Neochloris oleoabundans from nature to industry: a comprehensive review

“…Given these results, a taxonomic reassignment of E. oleoabundans was required. Indeed, the most common name used nowadays in the literature is N. oleoabundans (UTEX 1185) instead of Ettlia oleoabundans (UTEX 1185) (Gatenby et al 2003;Baldisserotto et al 2014;Castro-Puyana et al 2013;Li et al 2008;Morales-Sánchez et al 2013;Murray et al 2011;Villa et al 2014;Wang and Lan 2011).…”