Results 121 to 130 of about 499 (141)
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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 ...
R. Gastineau +7 more
semanticscholar +4 more sources
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 ...
R. Gastineau +7 more
semanticscholar +4 more sources
Phycologia, 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 +6 more
semanticscholar +2 more sources
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 +6 more
semanticscholar +2 more sources
Marennine-Like Pigments: Blue Diatom or Green Oyster Cult?
Blue Biotechnology, 2018 R. Gastineau +14 more
semanticscholar +2 more sources
Applied Microbiology and Biotechnology, 2000
The marine diatom Haslea ostrearia was immobilized in a tubular agar gel layer introduced into a photobioreactor of original design with internal illumination for the continuous synthesis of marennin, a blue-green pigment of biotechnological interest. Marennin was produced for a long-term period (27-43 days) and the volumetric productivity was maximum (
T, Lebeau +4 more
openaire +2 more sources
The marine diatom Haslea ostrearia was immobilized in a tubular agar gel layer introduced into a photobioreactor of original design with internal illumination for the continuous synthesis of marennin, a blue-green pigment of biotechnological interest. Marennin was produced for a long-term period (27-43 days) and the volumetric productivity was maximum (
T, Lebeau +4 more
openaire +2 more sources
Marennine production by agar-entrapped Haslea ostrearia Simonsen
Bioresource Technology, 1999Abstract 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 ...
openaire +1 more source
Journal of Agricultural and Food Chemistry, 2008
Among microalgae, the marine diatom Haslea ostrearia has the distinctive feature of synthesizing and releasing, into the surrounding environment, a blue-green polyphenolic pigment called marennine. The oyster-breeding industry commonly makes use of this natural phenomenon for the greening of oysters grown in the ponds of the French Atlantic coast. This
Jean-Bernard Pouvreau +8 more
semanticscholar +6 more sources
Among microalgae, the marine diatom Haslea ostrearia has the distinctive feature of synthesizing and releasing, into the surrounding environment, a blue-green polyphenolic pigment called marennine. The oyster-breeding industry commonly makes use of this natural phenomenon for the greening of oysters grown in the ponds of the French Atlantic coast. This
Jean-Bernard Pouvreau +8 more
semanticscholar +6 more sources
Absorptio Spectrumin vivoof the Blue Pigment ‘Marennine’ of the Pennate DiatomNavicula ostreariaBory
Journal of Experimental Botany, 1981Biological and environmental conditions affect the intracellular contents of the diatom Navicula ostrearia Bory. Thus this alga has the peculiarity of synthesizing marennine, a blue-green pigment of an undefined chemical nature. The present study deals with a cytophotometric method permitting identification of the pigment in vivo, by its characteristic
M. J. Robert, J. Hallet
semanticscholar +2 more sources
Journal of Applied Phycology, 2007
This paper describes a new approach for quantifying marennine, a blue-green pigment synthesized by the marine diatom Haslea ostrearia, which is known to be responsible for the greening of cultured oysters in French coastal areas. The method uses gel-filtration HPLC interfaced with a photodiode-array detector (PDA).
Jean-Bernard Pouvreau +3 more
semanticscholar +3 more sources
This paper describes a new approach for quantifying marennine, a blue-green pigment synthesized by the marine diatom Haslea ostrearia, which is known to be responsible for the greening of cultured oysters in French coastal areas. The method uses gel-filtration HPLC interfaced with a photodiode-array detector (PDA).
Jean-Bernard Pouvreau +3 more
semanticscholar +3 more sources
Applied Microbiology and Biotechnology, 2002
In oyster ponds, the marine diatom Haslea ostrearia synthesises and excretes a hydrosoluble pigment of commercial interest called marennin. During the benthic stage, when algal cells are naturally immobilised in their own polysaccharides, marennin production is higher. To optimise this production, axenic cultures of H.
T, Lebeau +3 more
openaire +2 more sources
In oyster ponds, the marine diatom Haslea ostrearia synthesises and excretes a hydrosoluble pigment of commercial interest called marennin. During the benthic stage, when algal cells are naturally immobilised in their own polysaccharides, marennin production is higher. To optimise this production, axenic cultures of H.
T, Lebeau +3 more
openaire +2 more sources