UV-B Stress, Pigment and Protein Content, Pure Cultures o f Marine D iatom s Several species o f marine diatoms were grown at + 18 °C and + 2 2 °C under normal air condi­ tions (0.035 vol.% C 0 2) at a light/dark alteration o f 14: 8 h. Intensity o f white light was 1 mW (~ 5000 lux). An artifical nutrient solution o f 35%o salinity was used. Algae harvested during exponential growth — were exp...

Introduction Phycotoxins ([phyco = seaweeds and algae] plus toxins) are a diverse group of poisonous substances produced by various aquatic plants in marine and fresh waters throughout the world. Not all aquatic plants produce toxins; and among those that do, not all, even from the same genera and species, produce toxins at all times and under all circumstances. In addition, problems with toxin...

Background and objectives: Marine macro algae are one of the most economically important resources of the oceans which contain important biologically active secondary metabolites. So they can be widely used in various applications. Due to the limited research work on the bioactive metabolites from Iranian algae, the red seaweed, Hypnea charoides, collected from interti...

Blooms of alien invasive marine algae have become common, greatly altering the health and stability of nearshore marine ecosystems. Concurrently, herbivorous fishes have been severely overfished in many locations worldwide, contributing to increases in macroalgal cover. We used a multi-pronged, interdisciplinary approach to test if higher biomass of herbivorous fishes inside a no-take marine re...

Reexamination of some previous collections of marine algae from the Northwest Hawaiian Islands (NWHI), also known as the Leeward Hawaiian Islands, and the addition of more recent collections have resulted in recognition of 48 taxa of Chlorophyta (green algae), with eight new records for the NWHI; 33 taxa of Phaeophyta (brown algae), with seven new records; and 124 species ofRhodophyta (red alga...

What are algae? Algae organisms that perform photosynthesis; is, they absorb carbon dioxide and release oxygen (therefore have chlorophyll, a group of green pigments used by photosynthetic convert sunlight into energy via photosynthesis) live in water or humid places. great variability divided microalgae, small size only visible through microscope, macroalgae, which larger size, up to more than...

(2015) Are multifunctional marine polysaccharides a myth or reality? Front. Chem. 3:39. Marine algae are ancient photosynthetic organisms that constitute the largest group in the plant kingdom. They are used for functional food, cosmetic additives, supplements productions, and in traditional medicine due to taste, prophylactic, and therapeutic effects. Algae contain microelements and iodine-con...

We report for the first time that marine angiosperms (seagrasses) possess sulfated polysaccharides, which are absent in terrestrial and freshwater plants. The structure of the sulfated polysaccharide from the seagrass Ruppia maritima was determined. It is a sulfated D-galactan composed of the following regular tetrasaccharide repeating unit: [3-beta-D-Gal-2(OSO3)-1-->4-alpha-D-Gal-1-->4-alpha-D...

There is a current tendency towards bioactive natural products with applications in various industries, such as pharmaceutical, biomedical, cosmetics and food. This has put some emphasis in research on marine organisms, including macroalgae and microalgae, among others. Polysaccharides with marine origin constitute one type of these biochemical compounds that have already proved to have several...

Marine algae are a rich source of bioactive compounds. This paper outlines the main bioactive compounds in marine algae and recent advances in novel technologies for extracting them. Novel extraction technologies reviewed include enzyme-assisted extraction, microwave-assisted extraction, ultrasound-assisted extraction, supercritical fluid extraction, and pressurized liquid extraction. These tec...