SN College

Thiruvananthapuram, India

SN College

Thiruvananthapuram, India
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Mishra N.,Chandbali College | Rout S.D.,North Orissa University | Panda T.,Sn College
African Journal of Pharmacy and Pharmacology | Year: 2011

This paper documents zootherapeutic practices in Similipal Biosphere Reserve of Mayurbhanj district, Orissa, India. It is primarily based on field surveys carried out in villages, where dwellers provided information on animal species used as medicine, body parts used to prepare the remedies, and the illnesses to which the remedies were prescribed. The dominant tribes involved in using animal parts as medicines in the district are Santhal, Kol, Bhumija, Bhuyan, Mahalis, Sounti and Saharas. The animal parts, namely, blood, excreta, feather and hair were used in raw or cooked forms for the treatment of piles, asthma, skin diseases, fever and rheumatism.The species used as medicinal drug and their respective families were: Bos gaurus gaurus(Mammalia), Buceros bicormis (Bucerotidae), Crocodylus palustris (Crocodilidae), Pavo cristatus(Phasianidae), Hystrix indica (Rodentia), Pterocarpus giganteus (Chiroptera) and Sus scorofacristatus (Mammalia).These zootherapeutical resources were used for the cure of 12 illnesses. © 2011 Academic Journals.

Siji V.L.,Mg College | Kumar M.R.S.,Mg College | Suma S.,Sn College | Kurup M.R.P.,Cochin University of Science and Technology
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2010

Eight new transition metal complexes of benzaldehyde-N(4)-phenylsemicarbazone have been synthesized and characterized by elemental analyses, molar conductance, electronic and infrared spectral studies. In all the complexes, the semicarbazone is coordinated as neutral bidentate ligand. 1H NMR spectrum of [Zn(HL)2(OAc)2] shows that there is no enolisation of the ligand in the complex. The magnetic susceptibility measurements indicate that Cr(III), Mn(II), Fe(III), Co(II) and Cu(II) complexes are paramagnetic and Ni(II) is diamagnetic. The EPR spectrum of [Mn(HL)2(OAc)2] in DMF solution at 77 K shows hyperfine sextet with low intensity forbidden lines lying between each of the two main hyperfine lines. The g values calculated for the [Cu(HL)2SO4] complex in frozen DMF, indicate the presence of unpaired electron in the dx2 - y2 orbital. The metal ligand bonding parameters evaluated showed strong in-plane σ bonding and in-plane π bonding. The ligand and complexes were screened for their possible antimicrobial activities. © 2010 Elsevier B.V. All rights reserved.

Joshi R.,Bhabha Atomic Research Center | Gangabhagirathi R.,Bhabha Atomic Research Center | Venu S.,Sn College | Adhikari S.,Bhabha Atomic Research Center | Mukherjee T.,Bhabha Atomic Research Center
Free Radical Research | Year: 2012

Antioxidant activity of gentisic acid has been studied using fast chemical kinetics and two in vitro models, namely the isolated rat liver mitochondria (RLM) and the human erythrocytes. The presence of gentisic acid (GA) during irradiation significantly reduced the levels of gamma radiation induced damages to lipids and proteins in RLM. Further, GA imparted protection to the human erythrocytes against exposure to gamma radiation. Molecular mechanism of free radical scavenging reactions has been evaluated with the help of rate constants and transients obtained from gentisic acid using pulse radiolysis technique. GA efficiently scavenged hydroxyl radical (k = 1.1 × 10 10 dm 3mol -1s -1) to produce reducing adduct radical (∼76%) and oxidizing phenoxyl radical (∼24%). GA has also scavenged organohaloperoxyl radical (k = 9.3 × 10 7 dm 3 mol -1s -1). Ascorbate has been found to repair phenoxyl radical of GA (k = 1.0 × 10 7 dm 3mol -1s -1). Redox potential value of GA •/GA couple (0.774 V vs NHE) obtained by cyclic voltammetry is less than those of physiologically important oxidants, which supports the observed antioxidant capacity of GA. We, therefore, propose that the antioxidant and radioprotective properties of GA are exerted by its phenoxyl group.

Mathew A.M.,National Institute of Technology Calicut | Mathew A.M.,SN College | Predeep P.,National Institute of Technology Calicut
Progress in Organic Coatings | Year: 2012

Electroactive conducting polymer composite coatings of polyaniline (PANI) are electrosynthesized on styrene-butadiene rubber (SBR) coated stainless steel electrode by potentiostatic method using aqueous H 2SO 4 as supporting electrolyte. The protective behaviour of these coatings in different corrosion media (3.5% NaCl and 0.5 M HCl) is investigated using Tafel polarization curves, open circuit potential measurements and electrochemical impedance spectroscopy. The results reveal that SBR/PANI composite coating is much better in corrosion protection than simple PANI coating. The corrosion potential of composite films shifts to more noble values indicating that SBR/PANI composite coating act as an effective corrosion protective layer. © 2011 Elsevier B.V. All Rights Reserved.

Seven Zn(II) and Cd(II) complexes of ON donor acetone-N(4)- phenylsemicarbazone (HL) have been synthesized and physico-chemically characterized by partial elemental analyses, molar conductance measurements, infrared, electronic and 1H NMR spectral studies. The semicarbazone binds the metal as a neutral bidentate ligand in all the complexes. The crystal structures of acetone-N(4)-phenylsemicarbazone and [Cd(HL)2Cl 2] have been determined by X-ray diffraction studies. The coordination geometry around cadmium(II) in the complex [Cd(HL) 2Cl2] is distorted octahedral. © 2010 Elsevier Ltd. All rights reserved.

Anoop M.R.,Sn College | Binil P.S.,Sn College | Suma S.,Sn College | Sudarsanakumar M.R.,Mg College
Journal of Rare Earths | Year: 2012

The complexes of rare earth elements with 1,2-diphenyl-4-butyl-3,5- Pyrazolidinedione (PBH, phenylbutazone) were synthesized and characterized by elemental analysis, molar conductance, IR, UV-Vis, EPR and magnetic moment measurements. Based on these studies the complexes were formulated as [Ln(PB) 3(H 2O) 2]·nH 2O, where Ln=Eu(III), Gd(III), Tb(III), Dy(III) and Er(III). From IR spectra, it was found that PBH acted as a bidentate mono-ionic ligand coordinating through two carbonyl oxygen of the pyrazolidinedione ring. The thermal analysis of all the complexes was carried out at a heating rate of 10 °C/min. The kinetic aspects of the complexes were evaluated. The negative entropy value of the complexes indicated a more ordered state for the activated complexes. The photoluminescence property of Tb(III) complex was investigated. It showed all the characteristic emission peaks of Tb 3+ with a life time of 0.98914 ms. © 2012 The Chinese Society of Rare Earths.

Jisha K.R.,Sn College | Suma S.,Sn College | Sudarsanakumar M.R.,Mg College
Journal of Thermal Analysis and Calorimetry | Year: 2010

Zirconyl complexes of hippuric acid (C9H9NO 3, hipH) and monophenylbutazone (4-butyl-1-phenyl-3,5- pyrazolidinedione,MPB) were prepared using ZrOCl2 . 8H2O and ZrO(NO3)3 . xH2O and characterized by elemental analysis, molar conductance measurement and IR, UV-Vis and NMR spectral methods. Thermal decomposition behaviour was studied by thermogravimetry. The second harmonic generation (SHG) conversion efficiency of hippuric acid complexes was also studied. © Akadémiai Kiadó, Budapest, Hungary 2009.

Panda T.,Sn College
International Journal of Biodiversity Science, Ecosystems Services and Management | Year: 2010

Seasonal dynamics of soil microfungal populations, their metabolic activity and decomposition of leaf litter were studied in a monoculture plantation of Casuarina equisetifolia L. in coastal sandy belt of Orissa for a period of 2 years (June 2002-May 2004). Fungal succession of litter was also studied. Microbial isolation and soil analysis was performed using standard procedures and decomposition of leaf litter was studied using litter bag technique. Maximum population density was observed in the rainy season followed by winter and lastly summer. Larger microbial populations were encountered in plantation soil compared to barren sand, corresponding with the fluctuation of prevailing temperature, moisture and total organic carbon content. Rates of litter loss and carbon dioxide output followed the same trends as the population density. The annual K value was 0.41. The diversity index varied from 2.87 to 3.71 (Shannon) and 0.356 to 0.885 (Simpson). The similarity index showed that highly decomposed litter (HDL) is more similar to Soil A (barren sand dune) than Soil B (sand dune with monoculture plantation of Casuarina). The introduction of predominantly decomposing microorganisms isolated from samples from the present study could help to increase the nutrient status of these soils. This research will hopefully improve the monitoring and management of decomposing fungi in the study area and highlights their importance in maintaining ecosystem services which could be a valuable tool for better understanding the long-term effects of changes in soil condition of the forest floors in coastal sand dunes of Orissa, India. © 2010 Taylor & Francis.

Mohanty R.B.,Nc Autonomous College | Panda T.,Sn College
Flora: Morphology, Distribution, Functional Ecology of Plants | Year: 2011

An investigation was carried out to estimate soil respiration rate and its relationship with microbial population in natural tropical forest soil, deforested soil and deforested-and-cultivated soil of Orissa, India. Soil respiration measurements and microbial isolation were performed following standard procedures. Monthly variation of soil respiration was observed to be governed by soil moisture. Considering respiration as a function of microbial population a regression analysis was made. The microfungal population showed positive relationship with the rate of soil respiration. The study revealed that conversion of natural forest led to a reduction of soil microbes and rate of soil respiration. Considering the importance of the microbial component in soil, we conclude that the conversion of natural forests to different land uses leads to the loss of biological stability of the soil. © 2011 Elsevier GmbH.

Siji V.L.,Mahatma Gandhi College | Sudarsanakumar M.R.,Mahatma Gandhi College | Suma S.,Sn College
Transition Metal Chemistry | Year: 2011

Four Co(II) complexes, [Co(HL) 2](OAc) 2, [Co(HL) 2Cl 2], [Co(HL) 2(MeOH) 2](NO 3) 2, and [Co 2(HL) 4(SO 4) 2] (HL = acetone-N(4)-phenylsemicarbazone) were synthesized and characterized by physicochemical and spectroscopic methods. The magnetic susceptibility measurements indicate that the complexes are paramagnetic with three unpaired electrons. In all the complexes, the semicarbazone is coordinated as a neutral bidentate ligand. The structure of [Co(HL) 2(MeOH) 2](NO 3) 2 was confirmed by single crystal X-ray crystallography. The ligand is neutral and bidentate, being coordinated to the cobalt atom through the carbonyl oxygen and the azomethine nitrogen. Intermolecular hydrogen bonding and C- H•••π interactions combine to stabilize the crystal structure. The ligand and its two complexes [Co(HL) 2Cl 2] and [Co(HL) 2(MeOH) 2](NO 3) 2 were screened for their antibacterial and antifungal activities using disk diffusion methods. © 2011 Springer Science+Business Media B.V.

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