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Trends in natural product research - PSE Young Scientists’ Meeting 2019 : on biochemistry, molecular aspects and pharmacology of bioactive natural products : book of abstracts [PDF]

, 2019

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Hybrid photobioreactor operation for the intensified production of Haslea ostrearia and marennine in function of strain variability

Algal Research, 2023
International audience ; Marennine is a high-value compound produced by the benthic diatom Haslea ostrearia, which could be used as an alternative to synthetic antibiotics in aquaculture. Over the last few years, however, low production rates have been impeding its exploitation. Recent progress on H.
A Masse
exaly   +4 more sources

Scalable purification of marennine and other exopolymers from diatom Haslea ostrearia's “blue water” [PDF]

Algal Research
Marennine is a bioactive, polydisperse and polyanionic compound produced by certain benthic diatoms of the Haslea genus. Notably, Haslea ostrearia are cultivated in photobioreactors, and their supernatant is collected to extract extracellular marennine ...
William Bélanger, Richard Saint-Louis, B. Genard, J.-S. Deschênes, R. Tremblay   +4 more
semanticscholar   +4 more sources

Biological Activities of Purified Marennine, the Blue Pigment Responsible for the Greening of Oysters

Journal of Agricultural and Food Chemistry, 2012
Marennine, the blue pigment produced by the diatom Haslea ostrearia , exists in two different forms, the intra- and extracellular forms. We investigated the antibacterial, antiviral, and antiproliferative properties of both of these forms. Both forms of marennine inhibited the development of marine bacteria, in particular the pathogenic organism ...
Romain Gastineau, Jean-Bernard Pouvreau, Claire Héllio   +2 more
exaly   +5 more sources

Enhancement of marennine production by blue light in the diatom Haslea ostrearia

Journal of Applied Phycology, 2005
The marine diatom Haslea ostrearia Simonsen produces a blue pigment, marennine, which is used for greening oysters. This microalga is cultured industrially indoors with artificial light. The influence of light quality on marennine production by cultures of H. ostrearia was investigated in the laboratory and at a semi-pilot scale (300 L tanks).
Jean-Luc Mouget
exaly   +3 more sources

Marennine production by agar-entrapped Haslea ostrearia Simonsen

Bioresource Technology, 1999
Abstract The pennate Diatom Haslea ostrearia was successfully immobilized in agar-gel disks and tested for marennine production in batch experiments. The concentration of pigment recovered varied between 34 and 92 mg l−1 liquid medium, according to the initial cell loading of the gel structures, which corresponded to volumetric production rates ...
G -A Junter, Thierry Jouenne
exaly   +3 more sources

Preliminary characterisation of the blue-green pigment “marennine” from the marine tychopelagic diatom Haslea ostrearia (Gaillon/Bory) Simonsen

Journal of Applied Phycology, 2006
Abstract The fine structure of Haslea ostrearia Simonsen, a diatom that is able to synthesize a blue pigment (marennine), is described. Ultrastructurally, this microalga has a typical naviculoid organization, but marked changes occur depending on the stage of cell blueing by accumulation of marennine.
Jean-Bernard Pouvreau, Michele Morançais, Fabrice Fleury   +2 more
exaly   +3 more sources

Purification of the blue-green pigment “marennine” from the marine tychopelagic diatom Haslea ostrearia (Gaillon/Bory) Simonsen

Journal of Applied Phycology, 2006
Haslea ostrearia is a common marine tychopelagic diatom which has the particularity of synthesizing a blue-green hydrosoluble pigment called “marennine”. This pigment, when released into the external medium, is known to be responsible for the colour of oyster gills.
Jean-Bernard Pouvreau, Michele Morançais, Guillaume Masse   +2 more
exaly   +5 more sources