Nanosecond pulsed electric field processing of microalgae based biorefineries governs growth promotion or selective inactivation based on underlying microbial ecosystems

Open access
Date
2021-01Type
- Journal Article
Citations
Cited 9 times in
Web of Science
Cited 10 times in
Scopus
ETH Bibliography
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Abstract
Nanosecond pulsed electric field treatment (nsPEF) is a technology-driven, resource-efficient approach fostering microalgae biorefineries for transforming them into economically viable scenarios. A processing window of 100 ns, 7 Hz, and 10 kV cm−1 significantly leveraged phototrophic Chlorella vulgaris and bacterial counts up to + 50.1 ± 12.2% and + 77.0 ± 37.4%, respectively (n = 4; p < 0.05) in non-axenic cultures. Applying the same processing window decreased C. vulgaris (−17.1 ± 13.8%) and prokaryotic (−82.7 ± 14.6%) counts owing to alterations in the prokaryotic community diversity. Principle coordinate analysis of prokaryotic phenotypic fingerprints indicated that phenotype or metabolism related diversity changes in the prokaryotic community affected the treatment outcome. The study fosters the upsurge of industrial-scale nsPEF realization and the economic viability of microalgae biorefineries through improved process understanding and thus control. It perpetuates nsPEF applicability for microalgae feedstock production and several other applications within single-cell biorefineries in the bio-based domain. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000442413Publication status
publishedExternal links
Journal / series
Bioresource TechnologyVolume
Pages / Article No.
Publisher
ElsevierSubject
Microalgae; Nanosecond pulsed electric field; Flow cytometry; Growth stimulation; Selective inactivationOrganisational unit
09571 - Mathys, Alexander / Mathys, Alexander
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Show all metadata
Citations
Cited 9 times in
Web of Science
Cited 10 times in
Scopus
ETH Bibliography
yes
Altmetrics