Greening effect on oysters and biological activities of the blue pigments produced by the diatom Haslea karadagensis (Naviculaceae)

Gastineau, Romain; Hardivillier, Yann; Leignel, Vincent; Tekaya, Nafissa; Morançais, Michèle; Fleurence, Joël; Давидович, Н. А.; Jacquette, Boris; Gaudin, Pierre; Hellio, Claire; Bourgougnon, Nathalie; Mouget, Jean‐Luc

doi:10.1016/j.aquaculture.2012.09.016

Cited by 32 publications

(30 citation statements)

References 55 publications

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“…These blue pigments can be observed in the apex of the microalgae (intracellular form) but can also be released in the medium (extracellular form). The purified forms of these pigments [ 139 ] have been shown to inhibit the growth of several marine bacteria including Vibrio such bacteria belonging to Vibrio splendidus clade or Vibrio aestuarianus species [ 30 , 117 , 118 , 119 ], involved in oysters mass mortality [ 140 , 141 , 142 ].…”

Section: Antibacterial Activity From Microalgaementioning

confidence: 99%

“…There are fewer screening activities for microalgal fungicides than for bactericides, and most of the studies focus not only on the antifungal activity but also on antibacterial activities [ 50 , 51 , 58 , 60 , 63 , 65 , 72 , 80 , 117 , 158 , 159 ]. As for antibacterial activity, antifungal activity varies widely depending on microalgal species, type of solvent used to extract the compound and the microorganism tested.…”

Section: Antifungal Activity From Microalgaementioning

confidence: 99%

“…So far, very few studies have been conducted to assess the antifungal activity from microalgae against pathogenic fungi in aquaculture systems ( Table 3 ). Gastineau et al have demonstrated in vitro the antifungal activity of the pigment produced by the diatom H. karadagensis against three marine fungal species Corollospora maritima , Dendryphiella salina , Lulworthia sp., which can be involved in the phenomenon of biofouling [ 117 ]. Organic extracts of the green microalgae Chlorella pyrenoidosa and Scenedesmus quadricauda have demonstrated antifungal activity against Fusarium monofiliform [ 63 ] reported of causing black gill disease in shrimps [ 179 ].…”

Section: Antifungal Activity From Microalgaementioning

confidence: 99%

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Antimicrobial Compounds from Eukaryotic Microalgae against Human Pathogens and Diseases in Aquaculture

et al. 2016

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The search for novel compounds of marine origin has increased in the last decades for their application in various areas such as pharmaceutical, human or animal nutrition, cosmetics or bioenergy. In this context of blue technology development, microalgae are of particular interest due to their immense biodiversity and their relatively simple growth needs. In this review, we discuss about the promising use of microalgae and microalgal compounds as sources of natural antibiotics against human pathogens but also about their potential to limit microbial infections in aquaculture. An alternative to conventional antibiotics is needed as the microbial resistance to these drugs is increasing in humans and animals. Furthermore, using natural antibiotics for livestock could meet the consumer demand to avoid chemicals in food, would support a sustainable aquaculture and present the advantage of being environmentally friendly. Using natural and renewable microalgal compounds is still in its early days, but considering the important research development and rapid improvement in culture, extraction and purification processes, the valorization of microalgae will surely extend in the future.

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Section: Antibacterial Activity From Microalgaementioning

confidence: 99%

Section: Antifungal Activity From Microalgaementioning

confidence: 99%

Section: Antifungal Activity From Microalgaementioning

confidence: 99%

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Antimicrobial Compounds from Eukaryotic Microalgae against Human Pathogens and Diseases in Aquaculture

et al. 2016

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“…hexadecatetraenoic, eicosapentaenoic and hexadecatrienoic acids) from Chaetoceros muelleri (Falaise et al 2016), Navicula delognei (Findlay and Patil 1984) and Phaeodactylum tricornutum (Desbois et al 2008;Desbois et al 2009) have shown interesting antibacterial activities. Moreover, blue pigments from Haslea ostrearia and H. karadagensis were found to be active against three marine fungi implicated in biofouling (Gastineau et al 2012a, b).…”

Section: Anti-adhesion Activitymentioning

confidence: 99%

Exploring the chemodiversity of tropical microalgae for the discovery of natural antifouling compounds

Réveillon

Tunin-Ley²,

Grondin³

et al. 2018

J Appl Phycol

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Marine microalgae and cyanobacteria have largely been studied for their biotechnological potential and proved their ability to produce a wide array of bioactive molecules. We investigated the antifouling potential of unexplored benthic tropical microalgae using anti-adhesion and toxicity bioassays against two major micro-and ma crobiofoulers, namely bacteria and barnacles. Fifty strains belonging to six phyla [Cyanobacteria, Miozoa (Dinoflagellata), Bacillariophyta, Cryptophyta, Rhodophyta and Haptophyta] were isolated from southwestern Islands of the Indian Ocean. They were chosen in order to represent as much as possible the huge biodiversity of such a rich tropical ecosystem. The associated chemodiversity was highlighted by both NMR-and LC-MS-based metabolomics. The screening of 84 algal fractions revealed that the anti-adhesion activity was concentrated in methanolic ones (i.e. 93% of all active fractions). Our results confirmed that microalgae constitute a promising source of natural antimicrofoulants as 17 out of the 30 active fractions showed high or very high capacity to inhibit the adhesion of three biofilm-forming marine bacteria. Dinoflagellate-derived fractions were the most active, both in terms of number and intensity. However, dinoflagellates were also more toxic and may not be suitable as a source of environmentally friendly antifouling compounds, in contrast to diatoms, e.g. Navicula mollis. The latter and two dinoflagellates of the genus Amphidinium also had interesting antisettlement activities while being moderately toxic to barnacle larvae. Our approach, combining the bioprospecting of a large number of tropical microalgae for their anti-settlement potential and metabolomics analyses, constituted a first step towards the discovery of alternative ecofriendly antifoulants.

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“…Green oysters have an approx. 20% higher market value in comparison with other refined oysters (Gastineau et al, 2012). Other microalgae pigments which might also have an effect on the color of oyster tissues have not been used in refinement processes.…”

Section: Microalgae Cultivationmentioning

confidence: 99%

Biochemical composition, volatile organic compounds, sensory and consumer evaluation of Pacific cupped oysters during land-based refinement

Houcke¹

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Oysters are the most tender and delicate of all seafoods. The stay in bed all day and night. They never work or take exercise, are stupendous drinkers, and wait for their meals to come to them."Hector Bolitho 'The Glorious Oyster ' (1960) Gempesaw, Bacon, Wessels and Manalo (1995) showed that consumers with a relatively higher educational background were more likely to buy oysters when compared to consumers with a lower educational background. Also, consumption patterns were significantly affected by the place of residence, age and seafood consumption frequency of the consumers. For instance, consumers were more likely to buy oysters when they lived relatively close to the seashore and were living in bigger cities. Furthermore, likelihood of oyster purchase increased with the age of the consumers. Purchase decision drivers such as health and taste play an important role in the buying behavior of oyster consumers.Consumers considering health as an important aspect in their purchase decision were six times more likely to buy oysters. Consumers considering taste as an important aspect in their purchase decision were 56 times more likely to buy oysters.Flavor, variety of diet, availability of fresh oysters, health, nutrition and tradition are all mentioned by consumers as reason for oyster consumption (Hanson, House, Sureshwaran, Posadas and Liu, 2002;House, Hanson and Sureshwaran, 2003).Alternatively, important reasons for not consuming oysters are high prices, food safety concerns, lack of availability of fresh oysters, allergy, lack of preparation knowledge, taste, smell and texture of the oysters (Hanson et al., 2002;House et al., 2003). Kow et al. (2008) and Mueller Loose, Peschel and Grebitus (2012) stressed the factor of convenience as a driver for purchase decisions. Australian consumers preferred, in their studies, pre-opened half-shell oysters over unopened oysters. Other important choice drivers in the study of Mueller Loose et al. (2012) were price, geographical origin of the oyster and oyster species. Kow et al. (2008) showed that Australian consumers had a Most of the sensory research regarding oysters is focused on the shelf life and storage conditions of these oysters. Aaraas et al. (2004) used a team of chefs and experienced oyster tasters in the development of attributes for sensory profiling of the European flat oyster in relation to freshness. For odor the attributes sea, seaweed, fishy, shellfish, crab, mud and mire were considered important. The appearance of the oysters was described using the attributes hydration of the gills, hydration of the mantle, color of plum and form of plum. The attributes describing texture were chewiness (1 st impression), hardness (after some mastication) and juiciness. For the description of taste the attributes sea-like, salty, pungent, sweet, rich, creamy, seaweed, bitter/bitterness and metallic aftertaste were used. In the study of Buzin, Baudon, Cardinal, Barillé and Haure (2011) odor attributes used in the freshness assessment of Pacific cupped oysters inclu...

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Greening effect on oysters and biological activities of the blue pigments produced by the diatom Haslea karadagensis (Naviculaceae)

Cited by 32 publications

References 55 publications

Antimicrobial Compounds from Eukaryotic Microalgae against Human Pathogens and Diseases in Aquaculture

Antimicrobial Compounds from Eukaryotic Microalgae against Human Pathogens and Diseases in Aquaculture

Exploring the chemodiversity of tropical microalgae for the discovery of natural antifouling compounds

Biochemical composition, volatile organic compounds, sensory and consumer evaluation of Pacific cupped oysters during land-based refinement

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