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Chennai, India

Mohandass G.,Sathybama University | Suguna Devi K.,k-Technology
Biosciences Biotechnology Research Asia | Year: 2010

Natural products have recently become the focus of increased research interest due to their potential pharmacological activities. Therefore, the present investigation was carried out to evaluate Vitex negundo for free radical scavenging activity by diphenyl-picryl-hydrazyl (DPPH) and nitric oxide (NO) radical scavenging assay methods. The results of the present study revealed that Vitex negundo showed remarkable free radical scavenging activity comparable to the standard (Curcumin and BHA). Source


Sasikala D.,D K M College for Women | Govindaraju K.,Sathybama University | Tamilselvan S.,Thiruvalluvar University | Singaravelu G.,Thiruvalluvar University
Biotechnology and Bioprocess Engineering | Year: 2012

The ethnopharmacological approach to the production of nanoparticles is directly related to the creation of an important symbiosis between nanoscience and medical science. Production of nanoparticles under ecofriendly conditions is of significance to address growing concerns on the overall toxicity of nanoparticles for medical and biotechnological applications. The present investigation demonstrates silver nanoparticles production capabilities of a miracle bean soybean Glycine max. We found that a single protein of soybean with a molecular weight of 51 kDa stabilizes the newly formed silver nanoparticles. The electroeluted protein has confirmed the bioreduction property of silver ions. © The Korean Society for Biotechnology and Bioengineering and Springer 2012. Source


Raj R.,Sathybama University | Srinivasan N.,Sathybama University
International Journal of Applied Engineering Research | Year: 2015

The web applications are very useful for our daily life, such as storing data on the web, retrieving the data from the web. The interlinked collection of data stored in database for every application which used for saving and/or accessing data from the database. Generally used approaches are SQL and SPARQL for retrieving data and storing data. The new techniques for searching in the linked data sources for keyword search and root keyword are reducing the high cost to find the relevance source. For computing performance, the routing plan based on scoring uses the multi-level scoring mechanism. This technique is very helpful for finding inter-linked data sources and reducing the search cost. © Research India Publications. Source


Sivasubramanian S.,Sathybama University | Namasivayam S.K.R.,Sathybama University
Journal of Pure and Applied Microbiology | Year: 2014

The microbial degradation of phenol by pure culture of Candida tropicalis SSK01 cells isolated from petroleum contaminated soil is studied in batch mode. Response surface methodology was used to optimize the medium composition for phenol degradation. Initial screening of variables such as initial phenol concentration, NH4NO3, KH2PO4, CaCl2, K2HPO4, MgSO4, KCl and Yeast extract was done by using Plackett-Burman experimental design. It was found that initial phenol concentration (p=0.016), NH4NO3(p<0. 011), CaCl2 (p<0.018), KH2PO4 (p<0.018) and Yeast Extract (p<0.047) had a significant effect on phenol degradation. Then Central Composite Design was employed to determine optimal concentration of each significant variable. Based on CCD the optimum concentrations of the critical components were found to be initial phenol concentration 600 g/l, NH4NO3-2.5 g/l, CaCl2-0.015 g/l, KH 2PO4-0.75 g/l and Yeast Extract -0.07 g/l for 98.5% % degradation in 72 hours. The R2, adjusted R2 and Predicted R2 values calculated by CCD were 0.9965, 0.944 and 0.99860 showed that experimental values are in good agreement with predicted values. Source


Ramachandran D.,Sathybama University | Vishwakarma V.,Sathybama University | Samal S.S.,Sathybama University
Proceedings of the International Conference on Nanoscience, Engineering and Technology, ICONSET 2011 | Year: 2011

Concrete structures are widely used in civil engineering which a mixture of calcium oxides, hydroxides and carbonates with quartz minerals and water. It is alkaline in nature with pH range 11-13.Concrete normally used in construction has large variety in mix proportion as well as type of cementitious materials. The basic characteristics of concrete structures and materials can be altered by adding some nanomaterials to increase its mechanical properties and others parameters. Nanomaterials like Titanium oxide (TiO 2) can oxidize oxygen or organic materials which is having sterilizing, deodorizing and anti-fouling properties. Additionally as TiO 2 is exposed to UV light, it becomes increasingly hydrophilic, thus it can be used for self -cleaning properties. Self healing concrete could reduce the CO 2 emission that result from concrete production and also may lengthen the life of the concrete. Addition of nanomaterials into different concrete structures could improve its performance. The various test methods can be performed to check the durability of concrete structures and also antimicrobial properties can be enhanced. © 2011 IEEE. Source

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