The synthesis, characterization and application of biologically synthesized nanomaterials are an important aspect in nanotechnology. The present study deals with the synthesis of silver nanoparticles (Ag-NPs) using the aqueous extract of red seaweed Gelidiella acerosa as the reducing agent to study the antifungal activity. The formation of Ag-NPs was confirmed by UV-Visible Spectroscopy, X-Ray ...

Alginates pertain to organic polysaccharides that have been extensively used in food- and medicine-related industries. The present study obtained alginates from an alginate overproducing Pseudomonas aeruginosa PAO1 mutant by screening transposon mutagenesis libraries. The interaction between bacterial and seaweed alginates and gut microbiota were further studied by using an in vitro batch ferme...

Seaweed oligosaccharides have attracted attention in food, agricultural, and medical applications recently. Compared to red brown seaweeds, fewer studies focused on the biological activity of green seaweed’s oligosaccharides. This study aimed produce bioactive ulvan via enzymatic hydrolysis from seaweed Ulva lactuca. Ulvan, a water-soluble polysaccharide, was obtained by hot water extraction. T...

Three species of red marine macro algae (Rhodophyta) from the Indian Ocean were analysed for the occurrence of conjugated polyenes. The composition of different lipid classes in these seaweeds along with their fatty acid composition has also been reported. Analysis of lipid classes of these seaweeds revealed that both Acanthophora spicifera (Ceramiales, Rhodophyta) and two species of Gracilaria...

hepatitis c virus (hcv) has infected 3% of the population worldwide and 20% of the population in egypt. hcv infection can lead to hepatocellular carcinoma and death. the presently available treatment with interferon plus ribavirin, has limited benefits due to adverse side effects. seaweeds have become a major source of new compounds to treat viral diseases. this work aimed to study the effect o...

A seaweed subalgebra of a semisimple Lie algebra g is a generalization of the notion of parabolic subalgebra. In the case g = sl(V ), seaweed subalgebras were recently introduced by Dergachev and Kirillov. We give an inductive procedure for computing the index of seaweed subalgebras of classical Lie algebras. This allows us to prove that the index of any seaweed in sl(V ) or sp(V ) is at most t...

Shrimp aquaculture has expanded rapidly in many countries and this rapid development resulted diseases outbreaks and further considerable utilization  of antibiotics. Use of natural products as antimicrobial has been reported as a resolution problem. The crude extract of a red seaweed (Laurencia snyderiae) collected from the Persian Gulf was evaluated for shrimp growth performance and to d...