Time filter

Source Type

Virudhunagar, India

John K.M.M.,Konkuk University | Ayyanar M.,AVVM Sri Pushpam College Autonomous | Jeeva S.,Konkuk University | Suresh M.,VHN Senthikumara Nadar College | And 2 more authors.
BioMed Research International | Year: 2014

Eugenia singampattiana is an endangered medicinal plant used by the Kani tribals of South India. The plant had been studied for its antioxidant, antitumor, antihyperlipidemic, and antidiabetic activity. But its primary and secondary metabolites profile and its antiviral properties were unknown, and so this study sought to identify this aspect in Eugenia singampattiana plant through different extraction methods along with their activities against porcine reproductive and respiratory syndrome virus (PRRSV). The GC-MS analysis revealed that 11 primary metabolites showed significant variations among the extracts. Except for fructose all other metabolites were high with water extract. Among 12 secondary metabolites showing variations, the levels of 4-hydroxy benzoic acid, caffeic acid, rutin, ferulic acid, coumaric acid, epigallocatechin gallate, quercetin, myricetin, and kaempferol were high with methanol extract. Since the flavonoid content of methanol extracts was high, the antioxidant potential, such as ABTS, and phosphomolybdenum activity increased. The plants antiviral activity against PRRSV was for the first time confirmed and the results revealed that methanol 25 μg and 75 to 100 μg in case of water extracts revealed antiviral activity. © 2014 K. M. Maria John et al. Source

Aron S.,VHN Senthikumara Nadar College | Sheela P.,Thiagarajar College Autonomous | Mehalingam P.,VHN Senthikumara Nadar College
Phytomorphology: An International Journal of Plant Morphology | Year: 2015

The present study is intended to evaluate the pharmacognostical and preliminary phytochemical characterization of the leaves and stem of Alysicarpus monilifer (L.) DC. Since few reports are available in this taxon, detailed microscopical and phytochemical studies of this plant were undertaken. All the parameters were studied as per the WHO and pharmacopoeial guidelines. Various parameters like fluorescence analysis and physicochemical constant were also studied. The anatomy of the leaf reveals that adaxial epidermis is stomatiferous and contains prismatic type of calcium oxalate crystals; stomata are paracytic; trichomes are both glandular and non-glandular. The stem shows the presence of hollow vascular cylinder which comprises several independent wedge shaped vascular bundle; xylem elements are surrounded by thick walled fibres. This observation would be of immense value in the botanical identification and standardization of the drug in the crude form. This study is used to distinguish the plant from its closely related species. Source

Periathai R.S.,Standard Fireworks Rajaratnam College for Women | Jeyakumaran N.,VHN Senthikumara Nadar College | Prithivikumaran N.,VHN Senthikumara Nadar College
Asian Journal of Chemistry | Year: 2013

SnO2 nanoparticles with different pH values ranging from 6-10 were synthesized using sol-gel process. The influence of pH on the structural and optical properties of SnO2 nanoparticles were studied using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray, Fourier transform infrared spectroscopy, UV-VIS and photoluminescence spectroscopy studies. X-Ray diffraction study revealed the formation of nano-metre scale SnO2 particles with tetragonal rutile structure in the range of 3-5 nm. The particle size was found to be small for the pH value 8.3. FTIR study indicates the structural confirmation of SnO2 nanoparticles. UV and photoluminescence studies also support our result. SEM study shows plate like morphology. Energy dispersive X-ray analysis confirms the elemental composition of SnO2 nanoparticles. It was concluded that tin oxide nanoparticle prepared at pH value around 8 can be used for various potential applications. © Asian Journal of Chemistry 2013. Source

Maria Francis Jeffrey Bose N.,VHN Senthikumara Nadar College | Aron S.,VHN Senthikumara Nadar College | Mehalingam P.,VHN Senthikumara Nadar College
Indian Journal of Traditional Knowledge | Year: 2014

The present ethnobotanical exploration depicts 48 medicinal plants for about 36 types of ailments practiced by Paliyar tribes of the Virudhunagar district, Tamil Nadu, India. The study was carried out through semi-structured questionnaires and personal interviews in consultations with the herbal practitioners. The ethnic community still depends upon their indigenous knowledge to healing their ailments. The study thus emphasizes the need to pursue meticulous ethnobotanical research in finding solutions to major fatal diseases and ensure its application in improving human healthcare facilities. Source

Vahini R.,VHN Senthikumara Nadar College | Kumar P.S.,VHN Senthikumara Nadar College | Karuthapandian S.,VHN Senthikumara Nadar College
Applied Physics A: Materials Science and Processing | Year: 2016

Bandgap-tailored NiO nanospheres were successfully synthesized by facile precipitation method for the first time and characterized by XRD, EDX, SEM, TEM, FTIR, UV and PL. Interestingly, the modification of the band gap was observed using UV–Vis (DRS) spectroscopy, and the observed band gap is 3.31 eV. The morphology of the materials was analysed by SEM and TEM which show the sphere like structures of NiO with the particle size of ~20 nm. The efficiency of the materials was examined by the degradation of crystal violet dye under UV light illumination. The complete degradation was achieved within 60 min, and the mechanism of the degradation were also been proposed. In addition, the degradation of rhodamine B (RhB) and methylene blue dye solution was also carried out to extend the practical applications of NiO nanospheres. The involvement of reactive oxidative species (ROS) was found out by trapping experiment, and the ROS is superoxide radical anion. © 2016, Springer-Verlag Berlin Heidelberg. Source

Discover hidden collaborations