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AuthorTouria, Bounnit
AuthorSaadaoui, Imen
AuthorGhasal, Ghamza Al
AuthorRasheed, Rihab
AuthorDalgamouni, Tasneem
AuthorJabri, Hareb Al
AuthorLeroy, Eric
AuthorLegrand, Jack
Available date2022-05-22T10:50:44Z
Publication Date2022-04-17
Publication NameProcess Biochemistry
Identifierhttp://dx.doi.org/10.1016/j.procbio.2022.04.017
CitationBounnit, Touria, Imen Saadaoui, Ghamza Al Ghasal, Rihab Rasheed, Tasneem Dalgamouni, Hareb Al Jabri, Eric Leroy, and Jack Legrand. "Assessment of novel halo-and thermotolerant desert cyanobacteria for phycobiliprotein production." Process Biochemistry (2022).
ISSN13595113
URIhttps://www.sciencedirect.com/science/article/pii/S1359511322001337
URIhttp://hdl.handle.net/10576/31390
AbstractFour indigenous cyanobacteria isolates identified as QUCCCM 34: Chroococcidiopsis sp., QUCCCM 54: Pleurocapsa sp., QUCCCM 77: Euhalothece sp., and QUCCCM 129: Cyanobacterium sp. were investigated during this study. Temperatures and salinities observed in outdoor were reproduced indoor, using small-scale photobioreactors, and culture conditions were optimized for maximum biomass and phycobiliprotein productions. The strains showed their halo and thermotolerance capacity. The highest biomass productivity was 125 ± 1.1 mg x L−1 d−1 for Pleurocapsa sp.at 30 °C–40 ppt. The major phycobiliproteins were phycocyanin, and the content was strain and age dependent. Pleurocapsa sp., Euhalothece sp., and Cyanobacterium sp reached their highest phycocyanin content (up to 160 ± 2.6 mgPC gx-1) after 4, 8, and 10 days, respectively, while it was only up to 100 ± 3.5 mgPC gx-1 for Chroococcidiopsis sp. at day 4, 40 °C–60 ppt. Increasing temperature and salinity stimulated the phycocyanin synthesis in Chroococcidiopsis sp, Pleurocapsa sp. and Euhalothece sp., whereas only salinity increment enhanced the pigments production(both phycoerythrin and phycocyanin) for Cyanobacterium sp. Finally, all the pigment extracts exhibited an antioxidant and radical scavenging activity which were maximal for the extracts from Pleurocapsa sp., with ≈ 60 mM Trolox equivalent gx−1 and 50%, respectively.
Languageen
PublisherElsevier
SubjectCyanobacteria
Thermotolerance
Halotolerance
Photobioreactor
Phycobiliproteins
Antioxidant ability
TitleAssessment of novel halo- and thermotolerant desert cyanobacteria for phycobiliprotein production
TypeArticle
Pagination425-437
Volume Number118
Open Access user License http://creativecommons.org/licenses/by/4.0/
dc.accessType Open Access


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