Papers by Vasuki Subramanian
International Journal of Current Microbiology and Applied Sciences, 2017
International Journal of Current Microbiology and Applied Sciences, 2017
Characterization of Bioactive Peptide Derived from Fish Mucus
Encyclopedia of Marine Biotechnology, 2020
Bioactive Natural Products of Endophytic Fungi from Marine Algae
Marine OMICS, 2016
C- NMR Spectroscopy of Alginate Extracted from Turbinaria Decurrens (Phaeophyta)
The present study extracted and characterized the alginate from brown algae collected from the sh... more The present study extracted and characterized the alginate from brown algae collected from the shores of Mandapam region, Gulf of Mannar, Southeast coast of India. Variations in yield and viscosity were observed in pre-treated material. The extraction for 5 hr exhibited high yield of alginate. The alginate extracted for 1 hr and 5 hr from Turbinaria decurrens was characterized by FT-IR, 1 H NMR and 13 C NMR spectroscopy.
Bioactive Potentials of Brown Seaweeds , Sargassum Myriocystum J . Agardh S . Plagiophyllum C . Agardh and S . Ilicifolium ( Turner ) J . Agardh
The use of macroalgae has grown exponentially during the last decade. In addition to their value ... more The use of macroalgae has grown exponentially during the last decade. In addition to their value for human nutrition, seaweeds have multiple therapeutic applications. This work is aimed at providing information on the three least studied species of Sargassum so as to promote these algae to be potentially profitable from biotechnology and commercial perspectives, and also benefit public health. The proximate composition, total phenolic content, total antioxidant activity, alginic acid yield of three brown seaweeds, Sargassum myriocystum, S. plagiophyllum and S. ilicifolium were studied. The seaweeds were high in carbohydrate (33.38-40.21%) and low in lipid content (0.17-0.4%) on dry wt basis. Total phenolic content and total antioxidant activity were high in Sargassum plagiophyllum (28.66 ±3.05 mg /g) and S.ilicifolium (36.66 ± 9.86 mg /g). These seaweeds showed (12.6-15.0%) alginic acid yield. The characteristic peaks of alginic acid appeared at 3414.00, 3491.16, 3414.00, 1635.64, 1...
European Journal of Experimental Biology, 2013
The purpose of the present study was to investigate the influence of cultural conditions and envi... more The purpose of the present study was to investigate the influence of cultural conditions and environmental parameters affecting the growth and bioactive metabolite production of the seaweed endophytic fungi Aspergillus terreus KC 582297 which exhibits a broad spectrum of in vitro antimicrobial activity against human infecting bacterial pathogens and the high bioactive metabolites production was observed in potato dextrose broth, compared to the other media. Glucose and yeast extract were found to be a best and most suitable carbon and nitrogen sources respectively, for the optimum growth and production of bioactive metabolites. Maximum bioactive metabolite productions occur in pH of 5.5 and temperature at 25°C.
Antioxidant properties of brown seaweeds (Turbinaria ornata (Turner) J.Agardh, 1848 and Padina tetrastromatica (Hauck)
The present study tested the antioxidant properties of two seaweeds (Turbinaria ornata and Padina... more The present study tested the antioxidant properties of two seaweeds (Turbinaria ornata and Padina tetrastromatica), collected from Gulf of Mannar area. The seaweeds were extracted in different organic solvents (methanol, hexane, diethyl ether, ethyl acetate) and fractionated through column chromatography and FTIR. The phenolic fraction exhibited higher antioxidant activity in Turbinaria ornata than that in Padina tetrastromatica.
Seaweeds are floating and submerged plants of shallow marine meadows. Marine macro algae are impo... more Seaweeds are floating and submerged plants of shallow marine meadows. Marine macro algae are important ecologically and commercially to many regions of the world, especially in Asian countries. Seaweeds are potential source of bioactive metabolites for the pharmaceutical industry in drug development. This paper provides details in immunity enhancement of seaweeds from finfish.
Identification of Protein from Muscle Tissue of Marine Finfish
The ocean covers 71% of the surface of the earth and contains approximately half of the total glo... more The ocean covers 71% of the surface of the earth and contains approximately half of the total global biodiversity. The marine environment is an exceptional reservoir of bioactive natural products, many of which exhibit structural and chemical features not found in terrestrial natural products. The richness of diversity offers a great opportunity for the discovery of new bioactive compounds. The number of natural products isolated from marine organisms increases rapidly and now exceeds with hundreds of new compounds being discovered every year. Now a day the development of resistance by a pathogen to many of the commonly used antibiotics provides an impetus for further attempts to search for new antimicrobial agents to combat infections and overcome problems of resistance and side effects of the currently available antimicrobial agents. Action must be taken to reduce this problem such as, controlling the use of antibiotics, carrying out research to investigate drugs from natural sour...
Antimicrobial Activity of Seaweeds from the Gulf of
Marine algae are known as a potential source of bioactive substances. In the present work, we use... more Marine algae are known as a potential source of bioactive substances. In the present work, we used four seaweeds (Sargassum wightii, Stocheospermum marginatum, Gracilaria foliifera and Padina boergesenii) , extracted in four solvents (acetone, methanol, chloroform and diethyl ether) and tested for their antimicrobial activity against 12 bacterial pathogens (Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Enterococci sp. Proteus sp. Streptococcus sp. Pseudomonas aeruginosa, Vibrio parahaemolyticus, Salmonella sp, Shewanella sp. Vibrio flurialis and Vibrio splendidus) and also against five fungal pathogens (Aspergillus niger, Candida albicans, Penicilium sp., Aspergillus flavus and Aspergillus tetreus). All the extracts, in particular brown seaweeds extracted in acetone exhibited the significant antimicrobial activity. This study established acetone extracts of brown seaweed were highly effective,against bacteria and fungi.In future the research may help to identify th...
Journal of Medicinal Plants Studies, 2014
The present study investigated the synthesis of silver and gold nanoparticles by two species of b... more The present study investigated the synthesis of silver and gold nanoparticles by two species of brown seaweeds (Padina tetrastromatica and Turbinaria ornata) through analytical techniques and its antimicrobial activity. The brown seaweeds, P. tetrastromatica and T. ornata were collected from Mandabam, The collected freshly seaweeds were thoroughly washed in distilled water. About 20 grams of seaweeds were weighed with distilled water. This was boiled in hot plate at 100 0C. After reaching the boiling point of the water, the seaweed extracts were obtained in yellowish and it was stored in clean and sterile screw tubes for further studies. The color formation of silver and gold nanoparticles was confirmed by visual observation and UV-Vis absorption spectrum. The size of the nanoparticles was determined by scanning electron microscopy and dynamic light scattering. The possible group responsible for the synthesis was confirmed by FTIR. Silver and gold nanoparticles were observed for ant...
International Journal of Current Microbiology and Applied Sciences, 2017
International Journal of Current Microbiology and Applied Sciences, 2016
Brown algal polysaccharide
Marine Glycobiology, 2016
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Papers by Vasuki Subramanian