Productivity correlated to photobiochemical performance of Chlorella mass cultures grown outdoors in thin-layer cascades.

Journal of Industrial Microbiology & Biotechnology
Jiří MasojídekGiuseppe Torzillo

Abstract

This work aims to: (1) correlate photochemical activity and productivity, (2) characterize the flow pattern of culture layers and (3) determine a range of biomass densities for high productivity of the freshwater microalga Chlorella spp., grown outdoors in thin-layer cascade units. Biomass density, irradiance inside culture, pigment content and productivity were measured in the microalgae cultures. Chlorophyll-fluorescence quenching was monitored in situ (using saturation-pulse method) to estimate photochemical activities. Photobiochemical activities and growth parameters were studied in cultures of biomass density between 1 and 47 g L(-1). Fluorescence measurements showed that diluted cultures (1-2 g DW L(-1)) experienced significant photostress due to inhibition of electron transport in the PSII complex. The highest photochemical activities were achieved in cultures of 6.5-12.5 g DW L(-1), which gave a maximum daylight productivity of up to 55 g dry biomass m(-2) day(-1). A midday depression of maximum PSII photochemical yield (F (v)/F (m)) of 20-30% compared with morning values in these cultures proved to be compatible with well-performing cultures. Lower or higher depression of F (v)/F (m) indicated low-light acclimated or ...Continue Reading

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Citations

May 28, 2013·Trends in Biotechnology·Ivo HavlikKenneth F Reardon
Aug 1, 2012·Bioprocess and Biosystems Engineering·Stefan HindersinDieter Hanelt
Jan 30, 2015·Bioprocess and Biosystems Engineering·Andreas Christoph Apel, Dirk Weuster-Botz
Sep 21, 2016·Applied Microbiology and Biotechnology·F Gabriel AciénE Molina-Grima
Feb 7, 2017·Biotechnology and Bioengineering·Matthew D OomsDavid Sinton
Sep 2, 2016·Nature Communications·Matthew D OomsDavid Sinton
Oct 28, 2019·Journal of the Science of Food and Agriculture·Laixin DaiJochen Weiss
Jul 21, 2017·Biotechnology for Biofuels·Giulia BenvenutiMaria J Barbosa
Jul 31, 2019·Folia Microbiologica·Tomáš GrivalskýJiří Masojídek
Nov 7, 2019·PeerJ·Hugo-Enrique Lazcano-HernándezJavier Arellano-Verdejo
Nov 22, 2018·Engineering in Life Sciences·Timm Steffen SeverinDirk Weuster-Botz
Jan 15, 2020·Journal of Agricultural and Food Chemistry·Mykola MylenkoPavel Hrouzek

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