Effect of nanosecond pulsed electric field treatment on cell proliferation of microalgae
Abstract
Photoautotrophic microalgae based biorefinery concepts are currently not competitive compared to other established production systems. Therefore, innovative upstream processes need to be developed to increase the competitiveness of photoautotrophic microalgae biorefinery concepts. Abiotic sub-lethal stress induction via nanosecond pulsed electric field (nsPEF) treatment might be a viable process to increase the efficiency of photoautotrophic microalgae cultivation. In this work, an increased cell growth after nsPEF treatment was observable. Application of nsPEF to highly proliferating cells in a repetitive process resulted in a statistical significant increase in cell growth (p = 0.009). The effect was most pronounced after five days wherefore cellular structures and processes were analyzed to reveal a possible mechanism. Within this work, a protocol for increased cell proliferation with a possible mechanism was derived, which improves competitiveness of photoautotrophic microalgae biorefineries in the future. However, based on the derived mechanism, the results are also relevant for other microorganisms. Show more
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https://doi.org/10.3929/ethz-b-000291659Publication status
publishedExternal links
Journal / series
Bioresource TechnologyVolume
Pages / Article No.
Publisher
ElsevierSubject
Abiotic stress; Nanosecond pulsed electric field; Microalgae cultivation; Arthrospira platensis; Cell proliferationOrganisational unit
09571 - Mathys, Alexander / Mathys, Alexander
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