Results 11 to 20 of about 255 (108)

Submerged membrane photobioreactor for the cultivation of Haslea ostrearia and the continuous extraction of extracellular marennine

open access: yesBioresource Technology, 2022
Haslea ostrearia is a marine diatom known to produce and excrete the marenine blue pigment. Its controlled, continuous and intensified cultivation remains a challenge. Thus, a submerged membrane photobioreactor (MPBR) was implemented in order to simultaneously and continuously cultivate H. ostrearia and extract marennine.
Jeremy Pruvost, Anthony Masse
exaly   +18 more sources

Harmful or harmless: Biological effects of marennine on marine organisms [PDF]

open access: yesAquatic Toxicology, 2019
Marennine is a water-soluble blue-green pigment produced by the marine diatom Haslea ostrearia. The diatom and its pigment are well known from oyster farming areas as the source of the greening of oyster gills, a natural process increasing their market value in Western France. Blooms of blue Haslea are also present outside oyster ponds and hence marine
Réjean Tremblay   +2 more
exaly   +9 more sources

Semi-continuous system for benthic diatom cultivation and marennine production [PDF]

open access: yesAlgal Research, 2022
International audience ; The feasibility of culturing different blue Haslea species and strains in different types of photobioreactors (PBRs) was studied on the long-term (until 151 days). The different strains of blue Haslea were selected for their peculiarity to produce marennine-like blue pigments as a potential industrial high-value compound.
Fiddy S Prasetiya   +2 more
exaly   +4 more sources

Haslea ostrearia Pigment Marennine Affects Key Actors of Neuroinflammation and Decreases Cell Migration in Murine Neuroglial Cell Model. [PDF]

open access: yesInt J Mol Sci, 2023
Haslea ostrearia, a cosmopolitan marine pennate diatom, produces a characteristic blue pigment called marennine that causes the greening of filter-feeding organisms, such as oysters. Previous studies evidenced various biological activities of purified marennine extract, such as antibacterial, antioxidant and antiproliferative effects.
Méresse S   +8 more
europepmc   +5 more sources

Identification of candidate transcripts associated with marennine biosynthesis in Haslea ostrearia: investigating enzymes and metabolic pathways involved

open access: yesNotulae Scientia Biologicae
The diatom Haslea ostrearia produces a blue-green pigment known as marennine, which exhibits remarkable antimicrobial, anti-viral, antiproliferative, allelopathic, and antioxidant properties.
Feriel KHIAR   +4 more
doaj   +4 more sources

“Bleu VS Yellow”: Marennine and extracellular polysaccharides for potential application in cosmetic and pharmaceutical applications

open access: yesThe Microbe
Haslea ostrearia, a widely distributed marine pennate diatom, produces the unique blue pigment marennine and various extracellular polysaccharides (EPS), exhibiting promising bioactive properties.
Bertrand Genard   +2 more
exaly   +4 more sources

Benthic Diatom Blooms of Blue Haslea spp. in the Mediterranean Sea [PDF]

open access: yesMarine Drugs, 2023
Blue Haslea species are marine benthic pennate diatoms able to synthesize a blue-green water-soluble pigment, like marennine produced by H. ostrearia Simonsen. New species of Haslea synthetizing blue pigments were recently described (H.
Julie Seveno   +7 more
doaj   +2 more sources

What Was Old Is New Again: The Pennate Diatom Haslea ostrearia (Gaillon) Simonsen in the Multi-Omic Age [PDF]

open access: yesMarine Drugs, 2022
The marine pennate diatom Haslea ostrearia has long been known for its characteristic blue pigment marennine, which is responsible for the greening of invertebrate gills, a natural phenomenon of great importance for the oyster industry. For two centuries,
Noujoud Gabed   +23 more
doaj   +2 more sources

Haslea silbo, A Novel Cosmopolitan Species of Blue Diatoms [PDF]

open access: yesBiology, 2021
Specimens of a new species of blue diatoms from the genus Haslea Simonsen were discovered in geographically distant sampling sites, first in the Canary Archipelago, then North Carolina, Gulf of Naples, the Croatian South Adriatic Sea, and Turkish coast ...
Romain Gastineau   +30 more
doaj   +2 more sources

Diving into Diversity: Haslea berepwari (Bacillariophyceae, Naviculaceae), a new species of marine diatom from New Caledonia [PDF]

open access: yesPhytoKeys
The current article introduces and describes Haslea berepwari sp. nov., a new species of diatom discovered in the vicinity of Boulouparis, New Caledonia. Under light microscopy, H. berepwari sp. nov.
Fiddy Semba Prasetiya   +14 more
doaj   +4 more sources

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