The roles of “top-down” and “bottom-up” factors were investigated in terms of their influence on the diatom and dinoflagellate abundances in the microtidal, salt wedge Huon Estuary, Tasmania, Australia. Long-term (1996–2005) changes in Chl a, the peridinin:Chl a ratio and the abundance of autotrophic dinoflagellates were observed to coincide with the warming of regional surface waters. There we...

Some works of literature reported that fucoxanthin has diverse potential benefits for human health. Thus, this review would explain the sources fucoxanthin, extraction techniques, bioactivities, and its application in Nutra- cosmeceutical industries. Brown algae, such as Padina australis , Undaria pinnatifida ; microalgae, Chaetoceros gracilis Phaeodactylum tricornutum were fucoxanthin. Then, c...

Fucoxanthin is a pigment present in diverse marine organisms such as micro and macro-algae. The most relevant source of fucoxanthin has been described to be the group brown macroalgae, also known Phaeophyceae. presence fucoxanthin, xanthophyll, found an accessory chloroplasts algae responsible for providing them their characteristic color. market size this carotenoid, expected reach US$ 120 mil...

This work aimed to select a Tisochrysis lutea phenotype with higher biomass and fucoxanthin productivities using fluorescence-activated cell sorting (FACS). A novel was obtained after 2 rounds of selection, based on high-fucoxanthin fluorescence. The resulting forms aggregates, has no flagella, stable 15 months. Optimal temperature (30 °C) light (300 µmol m?2 s?1) were at laboratory scale, iden...

Seaweeds are important sources of carotenoids, and numerous studies have shown the beneficial effects of these pigments on human health. In the present study, Himanthalia elongata brown seaweed was extracted with a mixture of low polarity solvents, and the crude extract was separated using analytical thin-layer chromatography (TLC). The separated compounds were tested for their potential antiox...

Obesity is a major epidemic that poses a worldwide threat to human health, as it is also associated with metabolic syndrome, type 2 diabetes and cardiovascular disease. Therapeutic intervention through weight loss drugs, accompanied by diet and exercise, is one of the options for the treatment and management of obesity. However, the only approved anti-obesity drug currently available in the mar...

The goals of this study were (1) to investigate whether Fucus vesiculosus regulates the production of its antifouling defence chemicals against epibacteria in response to light limitation and temperature shifts and (2) to investigate if different surface concentrations of defence compounds shape epibacterial communities. F. vesiculosus was incubated in indoor mesocosms at five different tempera...

Photosynthetic pigment composition was studied in batch cultures of Heterocapsa sp. and Olisthodiscus luteus growing exponentially in a 12:12 light:dark cycle. Both species divided in the dark. The synthesis of pigments was continuous for both species. However for chlorophyll c and peridinin, in Heterocapsa sp., and chlorophyll c and fucoxanthin, in 0. luteus, (pigments belonging to light harve...

Seaweed is one of the largest producers of biomass in marine environment and is a rich arsenal of active metabolites and functional ingredients with valuable beneficial health effects. Being a staple part of Asian cuisine, investigations on the crude extracts of Phaeophyceae or brown algae revealed marked antitumor activity, eliciting a variety of research to determine the active ingredients in...