Results 31 to 40 of about 255 (108)

Antibacterial Activity of Haslea ostrearia Supernatant Adapted in Indonesia against Pathogenic Bacteria Relevant to Mariculture (In-Vitro Study)

open access: yesOmni-Akuatika, 2019
Haslea ostrearia has known as the only diatom which synthesizes a water-soluble blue pigment, marennine. It has some biological activities such as allelopathy, antioxidant, antibacterial, antiviral, and growth inhibitor.
Ikfa Permatasari   +4 more
doaj   +1 more source

Blue Diatoms: Global Phenomenon of ˝Greening˝ in Shellfish and Record of Planktonic Haslea Species in the South Adriatic Sea

open access: yesNaše More (Dubrovnik), 2017
Diatoms are unicellular, photoautotrophic eukaryotic microorganisms, often forming colonies and can be found in most aquatic and moist terrestrial habitats. All known diatoms today have specific golden-brown pigment fucoxanthin that masks chlorophylls in
Maja Mejdandžić   +2 more
doaj   +1 more source

Biodiversity, reproduction and phylogeny of the blue diatoms from the genus Haslea and valorization of their marennine-like pigments

open access: yes, 2011
The diatom Haslea ostrearia has long been considered as the only organism able to produce a blue pigment called marennine, known for greening oysters’ gills in fattening ponds. Key factors for the triggering of this diatom’s sexual reproduction (auxosporulation) have been evidenced, such as cell concentration, light quality or light conditioning.
Gastineau, Romain
openaire   +2 more sources

Impact of Blue Haslea spp. Blooms on Benthic Diatom and Bacterial Communities

open access: yesPhycology
Climate change and nutrient enrichment are increasing the frequency of algal blooms, with sometimes significant impacts on coastal ecosystems. Haslea ostrearia blooms have been documented in oyster ponds and are not harmful, yet their effects in open ...
Julie Seveno   +6 more
doaj   +1 more source

Influence du procédé de culture et de purification sur la quantité et la bioactivité de la marennine produite par Haslea ostrearia [PDF]

open access: yes
« La marennine est un pigment bleu hydrosoluble synthétisé et externalisé par la diatomée benthique Haslea ostrearia. Dans un contexte de lutte pour la sécurité alimentaire, sa valorisation comme postbiotique dans les écloseries et pouponnières de ...
Pédron, Élodie
core   +3 more sources

Aktivitas Antibakteri Pigmen Ekstraseluler Marennine Terhadap Vibrio alginolyticus dan Bacillus cereus (Kajian Suhu dan Lama Waktu Pemanasan) [PDF]

open access: yes, 2021
Tingkat konsumsi produk perikanan setiap tahunnya terus mengalami peningkatan, sehingga pemenuhan kebutuhan banyak dibebankan dari hasil budidaya. Usaha budidaya tidak lepas dari ancaman kerugian akibat timbulnya penyakit hasil infeksi bakteri patogen
Prof. Dr. Ir. Yunianta,, DEA   +2 more
core  

Effect of Extracellular Marennine produced by Haslea Ostrearia on the Blood Clams Tegillarca Granosa

open access: yesJournal of Aquaculture and Fish Health
Marennine is a blue-green pigment produced by diatoms of the Haslea genus, one of which is Haslea ostrearia. This marennine pigment is water-soluble and confirmed to contain polyphenols and glycosides. There are two forms of marennine pigment: the intracellular form of marennine (IMn) and the extracellular form of marennine (EMn).
Eri Bachtiar   +4 more
openaire   +1 more source

Marennine et exopolysaccharides de la microalgue bleue Haslea ostrearia : potentiel d'application cosmétique et pharmaceutique [PDF]

open access: yes
RÉSUMÉ : Haslea ostrearia, une diatomée pennée marine largement distribuée, est renommée pour la production de la marennine, un pigment bleu unique, et d'autres extraits tels que les exopolysaccharides (EPS).
Chehouri, Mariame
core  

Potentiel antimicrobien du pigment microalgal marin marennine sur Vibrio splendidus : étude de son interaction membranaire par résonance magnétique nucléaire [PDF]

open access: yes, 2019
RÉSUMÉ: L'aquaculture est un secteur de production alimentaire dont la croissance est la plus rapide dans le monde. Cependant, cette activité fait face à plusieurs problèmes d'ordre pathologique, où les animaux en élevage sont souvent sous la menace des ...
Bouhlel, Zeineb
core  

Pengaruh Suhu Dan Waktu Pemanasan Terhadap Aktivitas Antioksidan Dan Total Fenol Pigmen Marennine Mikroalga Haslea Ostrearia [PDF]

open access: yes, 2020
Antioksidan memiliki peran penting untuk mencegah terjadinya oksidasi dengan cara mengikat radikal bebas yang sangat reaktif. Radikal bebas dalam tubuh manusia dapat mengganggu keutuhan sel, hal tersebut dikarenakan radikal bebas dapat bereaksi dengan
Danti, Nabilla Fara   +2 more
core  

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