Results 81 to 90 of about 255 (108)

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

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.
Réjean Tremblay, A Masse
exaly   +4 more sources

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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   +2 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, Mouget Jean-Luc
exaly   +2 more sources

Investigation of marennine quality throughout the main culture phases of Haslea ostrearia in a membrane photobioreactor

Journal of Applied Phycology
Marennine is a blue pigment excreted by the diatom Haslea ostrearia. This pigment is renowned for its antioxidant and antibacterial properties, which have raised research interest. The standard method for obtaining marennine is by harvesting the supernatant from cultures of H. ostrearia and applying a double ultrafiltration approach.
Pedron, Elodie, Mouget, Jean-Luc, Duperthuy, Marylise, Mathieu-Denoncourt, Annabelle, Laroche, Céline, Tremblay, Réjean, Deschênes, Jean-Sébastien, Gonçalves, Olivier, Massé, Anthony   +8 more
openaire   +2 more sources

Microbiota modification of Mytilus edulis larvae in response to the use of a new probiotic, the marennine, in aquaculture [PDF]

, 2018
In bivalve hatcheries, opportunistic pathogens have been associated with important mass mortality events of larvae and important economic lost for producers. New alternatives to the use of antibiotics, such as probiotics, have been proposed to limit the occurrence of such events in bivalve hatcheries and to stabilize bivalve production.
Latour, Jordan, Bernier, Sarah-Béatrice, Doiron, Kim, Tremblay, Réjean, Lemarchand, Karine   +4 more
openaire   +3 more sources

Effect of marennine produced by the blue diatom Haslea ostrearia on behavioral, physiological and biochemical traits of juvenile Mytilus edulis and Crassostrea virginica

Aquaculture, 2017
Abstract Haslea ostrearia is a marine diatom that synthesizes and releases marennine, a water-soluble blue-green pigment responsible for the greening of the gills and labial palps of bivalves. The present study evaluated the effect of different marennine concentrations (0, 0.5, 1.0 and 2.0 mg l− 1) on the behavior (valve opening), physiology ...
Fiddy S Prasetiya, Luc A Comeau, Romain Gastineau   +2 more
exaly   +2 more sources

Continuous marennin production by agar-entrapped Haslea ostrearia using a tubular photobioreactor with internal illumination

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, P, Gaudin, G A, Junter, L, Mignot, J M, Robert   +4 more
openaire   +2 more sources

Extraction and quantitative analysis of the blue-green pigment “marennine” synthesized by the diatom Haslea ostrearia

Journal of Applied Phycology, 2002
This study reports further information on “mareninne,” awater-soluble blue-green pigment synthesized by the diatom Hasleaostrearia, which is essential to the greening of maturing oysters inFrench production areas. The extraction process is reported, as well aspreliminary characterization of a partially purified marennine extract,including quantitative ...
Jean-Michel Robert, Michèle Morançais, Elisabeth Pradier, Jean-Luc Mouget, Gérard Tremblin   +4 more
openaire   +1 more source