One-pot green synthesis of gold nanoparticles using , a marine soft coral: Assessing biological potentialities of antibacterial, antioxidant, anti-diabetic and catalytic degradation of toxic organic pollutants.

Marine bio-resources are being extensively researched as a priceless supply of substances with therapeutic potential. This work report the first time attempt made towards the green synthesis of gold nanoparticles (AuNPs) using the aqueous extract of marine soft coral (SCE), . The synthesis was conducted under optimized conditions and the visual coloration of reaction mixture changed from yellowish to ruby red at 540 nm.

Green Chemistry Based Gold Nanoparticles Synthesis Using the Marine Bacterium PBCW2 and Their Multitudinous Activities.

Green chemistry has paved an 'avant-garde avenue' in the production and fabrication of eco-friendly stable nanoparticles employing the utilization of biological agents. In the present study we present the first report on the potential of the marine bacterium PBCW2 for the extracellular production of gold nanoparticles (AuNPs). Utilizing a variety of methods, AuNPs in the cell-free supernatant of (CFS-LBOE) were identified and their antioxidant, antibacterial, and dye-degrading properties were examined.

A checklist of seaweeds of the Andaman and Nicobar Islands, India: a way forward for seaweed cultivation, food, and drug applications.

Seaweed exploitation in mainland India was started in early 1970s for various applications. The checklist of seaweeds of mainland India was well documented during 2001. However, rich marine macroalgal diversity found in island ecosystems of Andaman and Nicobar Islands have not been explored until today due to inaccessibility to most remote and protected islands.

Isolation and characterization of marine bioluminescent bacteria for toxicity bioassays and biotechnological applications.

Toxic heavy metals pollution posed severe health hazards to the environment and biodiversity. Therefore, the development of rapid and non-invasive bioassays is in the race to monitor toxic chemicals using novel approaches. This study isolated and characterized an intense blue luminescence-producing marine bacteria, Vibrio campbellii STF1, for biosensing applications.

Predominance of Harveyi clade luminous bacteria in coastal waters of South Andaman, India.

The diversity, distribution, and mechanisms of bacterial speciation of Vibrio species belonging to Harveyi clade are an important global research interests due to their pathogenic activity in coastal environments. Luminous bacteria are also known to act as environmental indicators in coastal waters. This study demonstrates that luminous bacteria belonging to harveyi clade are predominant in seawater, sediment, surfaces of marine animals and plants, and light organs of leiognathid fishes.

Antimicrobial compounds produced by Lysinibacillus odysseyi epiphytic bacteria associated with red algae.

Seaweed epiphytic bacteria are highly host specific and their association is little known. The marine environment of Andaman Islands is rich in algal diversity and their association with microbial communities remains unexplored. We investigated the epiphytic bacterial communities from the intertidal red alga Gracilaria canaliculata.

Antimicrobial Potential of Epiphytic Bacteria Associated With Seaweeds of Little Andaman, India.

Seaweeds of the intertidal regions are a rich source of surface associated bacteria and are potential source of antimicrobial molecules. In the present study, 77 epiphytic isolates from eight different algae collected from Little Andaman were enumerated. On testing for their antimicrobial activities against certain pathogens twelve isolates showed positive and six of them showed significant antimicrobial inhibition zone against type 1, type 2a, type 5, Enterotoxigenic O115, Enteropathogenic serotype O114, ; O1 Ogawa Based on the activity these six isolates (G1C, G2C, G3C, UK, UVAD, and Tor1) were identified by 16S rRNA gene sequence and were found to belong to the phyla Firmicutes and Proteobacteria.