Reference : Characterisation of a secondary carotenoid producer microalga of the genus Coelastrella
Scientific congresses and symposiums : Poster
Life sciences : Biochemistry, biophysics & molecular biology
Characterisation of a secondary carotenoid producer microalga of the genus Coelastrella
Corato, Amélie mailto [Université de Liège - ULiège > Sciences de la Vie > Laboratoire de Bioénergétique > >]
Franck, Fabrice mailto [Université de Liège - ULiège > > Labo de Bioénergétique >]
Jacques, Philippe mailto [Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies >]
Advances in industrial biotechnology - Prospects and challenges for the devlopment of algal biotechnology
du 24 au 27 septembre 2017
[en] Some green microalgae synthesize secondary carotenoids as protecting agents under stress. These pigments have high value as feed supplement for aquaculture and as health products. The most promising pigment is astaxanthin, because of its antioxidant, antitumoral and anti-inflamatory properties. The most used natural source of this pigment is the microalga Haematococcus pluvialis. However this species grows slowly and lacks robustness for easy cultivation. Therefore, other species are investigated for astaxanthin production. Here, we identified a locally isolated strain as Coelastrella sp. that is a secondary carotenoid producer. [1] A known typical feature of this genus, that we could observed in the strain by scanning electron microcopy, is the presence of meridional ribs. [2] We analyzed the culture conditions and concluded that this strain grows both autotrophically and heterotrophically and is able of fast change in pigment composition under controlled stress conditions. Thanks to HPLC analyses, we determined that the strain accumulates a variety of secondary carotenoids, among which: astaxanthin, cantaxanthin and echinenone. Unidentified compounds will be further analyzed by mass spectrometry.

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Poster 24-27.09.17 _ Bielefeld Congres _ A.Corato.pdfPublisher postprint981.82 kBView/Open

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