Alvas College

Moodbidri, India

Alvas College

Moodbidri, India

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Deva Kumar K.,Central Plantation Crops Research Institute | Thomas R.J.,Central Plantation Crops Research Institute | Nair R.V.,Central Plantation Crops Research Institute | Jerard A.B.,Central Plantation Crops Research Institute | And 5 more authors.
Indian Journal of Agricultural Sciences | Year: 2011

The population structures among the root (wilt) disease-resistant and susceptible coconut palms from 12 locations in the three disease-endemic districts of southern Kerala, were analyzed using nine microsatellite markers. The pair-wise population differentiation estimate (Fst) between the resistant and susceptible populations was 0.021. Two major populations and a subpopulation cluster were identified among the resistant palms. The analysis of genetic relatedness between the resistant mother palms showed that most of the palms located in a single locality shared sib relationship among them. The existence of close genetic relationship among resistant palms from Chengannur, Thiruvalla, Kottayam and Pavukkara localities in Kerala were reported. The results are discussed in terms of breeding strategies for increasing heterozygosity and obtaining the maximum number of disease-resistant seedlings.


Shetty V.K.,National Institute of Technology Karnataka | Namitha L.,National Institute of Technology Karnataka | Namitha L.,Alvas College | Rao S.N.,National Institute of Technology Karnataka | And 2 more authors.
Water, Air, and Soil Pollution | Year: 2012

The batch bioreduction of Cr(VI) by the cells of newly isolated chromium-resistant Acinetobacter sp. bacteria, immobilized on glass beads and Ca-alginate beads, was investigated. The rate of reduction and percentage reduction of Cr(VI) decrease with the increase in initial Cr(VI) concentration, indicating the inhibitory effect of Cr(VI). Efficiency of bioreduction can be improved by increasing the bioparticle loading or the initial biomass loading. Glass bioparticles have shown better performance as compared to Ca-alginate bioparticles in terms of batch Cr(VI) reduction achieved and the rate of reduction. Glass beads may be considered as better cell carrier particles for immobilization as compared to Ca-alginate beads. Around 90% reduction of 80 ppm Cr(VI) could be achieved after 24 h with initial biomass loading of 14.6 mg on glass beads. Artificial neural networkbased models are developed for prediction of batch Cr(VI) bioreduction using the cells immobilized on glass and Ca-alginate beads. © Springer Science+Business Media B.V. 2011.


Adam F.,Universiti Sains Malaysia | Smitha K.,Alvas College | Charishma S.P.,Alvas College | Samshuddin S.,Alvas College | Ameram N.,Universiti Sains Malaysia
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

The title compound, C20H20N2O, was studied as a part of our work on pyrazoline derivatives. It represents a trans-isomer. The central pyrazoline ring adopts an envelope conformation with the asymmetric C atom having the largest deviation of 0.107(1)Å from the mean plane. It forms dihedral angles of 6.2(1) and 86.4(1)° with the adjacent p-tolyl and styrene groups, respectively. In the crystal, C - H⋯O interactions link molecules into infinite chains along the c axis.


Adam F.,Universiti Sains Malaysia | Samshuddin S.,Alvas College | Ameram N.,Universiti Sains Malaysia | Subramaya,Alvas College | Samartha L.,Alvas College
Acta Crystallographica Section E: Crystallographic Communications | Year: 2015

The title compound, C19H21N3O, comprises a central pyrazole ring which is N-connected to an aldehyde group and C-connected twice to substituted benzene rings. The pyrazole ring is twisted on the C - C single bond, and the least-squares plane through this ring forms dihedral angles of 82.44(5) and 4.52(5)° with the (dimethylamino)benzene and p-tolyl rings, respectively. In the crystal, weak C - H⋯O hydrogen bonds link molecules into supramolecular tubes along the b axis.


Bhat P.R.,Alvas College | Kaveriappa K.M.,Mangalore University
Tropical Ecology | Year: 2011

Rhizoplane mycoflora of Gymnacranthera farquhariana, Knema attenuata, Myristica dactyloides, M. fatua var. magnifica and M. malabarica was studied by root washing and root plating methods. The root samples along with adhering soil were collected from the rhizosphere regions of each tree species in three seasons - summer, monsoon and post-monsoon - over a period of two years from the forests of Gersoppa, Uttara Kannada district of Karnataka. Soil physico-chemical properties, including moisture, temperature, pH, electrical conductivity, and organic matter and total N, P, K, Ca, Cu, Fe, Mn, Mg, Na and Zn content, were also analyzed. A total of 37 species of fungi were isolated from the rhizoplane region of five tree species. Sørensen's index showed the similarity between the mycoflora of rhizoplane regions to range from 34.6 to 54.6%. Among the five tree species, a maximum of 24 fungal species were isolated from the rhizoplane of K. attenuata and M. fatua var. magnifica, followed by 22 species in M. dactyloides and M. malabarica, and 20 species in G. farquhariana. Nine species were common to the rhizoplane of all the five tree species and nine species were observed in the rhizoplane of only one of the five tree species. The maximum number of fungal species was recorded during monsoon in all plant species and the minimum during post-monsoon and summer. The physico-chemical properties of the rhizosphere soil differed among plant species in different seasons. The dominant genera in terms of number of fungal species were Penicillium and Aspergillus. The rhizoplane fungal population for each plant species in different seasons was correlated with physico-chemical properties of respective seasons, and found that it was significant in some of the seasons or for some parameters only. © International Society for Tropical Ecology.


Rama Bhat P.,Alvas College | Prajna P.S.,Alvas College | Kumar V.,Alvas College | Adarsh Hegde M.,Alvas College | Singh L.,Alvas College
Journal of Medicinal Plants Research | Year: 2011

The antimicrobial activities of leaf extracts of Calycopteris floribunda in three different solvents such as diethyl ether-methanol, aqueous 90% methanol extract and petroleum ether-butanol extract were tested against Bacillus cereus, Bacillus subtilis and Staphylococcus aureus. The diethyl ether-methanol extract of the leaves and its petroleum ether-butanol fraction showed significant antibacterial activity. The antioxidant property was maximum in petroleum ether-butanol extract and was minimum in diethyl ether-methanol extract. ©2011 Academic Journals.


Sumalatha,Alvas College | Rama Bhat P.,Alvas College | Ballal S.R.,Alvas College | Acharya S.,Alvas College
Journal of Applied Pharmaceutical Science | Year: 2012

India has a very rich diverse faunal and floral wealth spread across the length and breadth of country. Biodiversity hotspots like Himalayan region and Western Ghats are bestowed with innumerous number of potential medicinally important plants whose scientific research are yet to be taken up. Salacia chinensis is one among them and forms one of the known ethanobotanically used herbal drug for diabetes and aliments. A scientific study on physiological effect of Salacia chinensis can give baseline information about potency of plant drug formulae. Therefore this plant was taken up for the study of immunomodulatory effects on swiss albino rats. Rats were fed with a concentration of 1 mg/kg, 2 mg/kg, 4 mg/kg and 32 mg/kg body weight of aqoues extract of Salacia chinensis for a period of 14 days. Various hematological,serological and immunological parameters were studied at the end of 14days trial and compared with control group. Total leukocyte count, neutrophil percentage, blood glucose hemoglobin, hemagglutination antiboby titer against SRBC and delayed hypersensitivity reaction were found increased along the animals treated with 1mg/kg body weight of animal. On the contrary higher concentration of drug have reduced immune response compared to control group showing the negative effect of the higher concentration of drug on the immune response. The present study of Salacia chinensis evidently shows that concentration of 1mg/kg can boost the immune system and at the same time if used at higherconcentration can determine the immune system.


Narasimha Rai K.,Father Muller Medical College | Kumari Suchetha N.,NITTE University | Damodara Gowda K.M.,NITTE University | Swathi K.R.,Alvas College
Journal of Clinical and Diagnostic Research | Year: 2013

Introduction: Micronutrients are nutrients which are required by humans and other living beings throughout life in small quantities, to orchestrate a whole range of physiological functions, which the organism itself cannot produce. Therefore, the present study was undertaken to evaluate the status of the micronutrients, oxidative stress, and the lipid profile in healthy adults. Materials and Methods: The present study was conducted after getting the institutional ethical clearance and informed written consents from all the participants. The estimation of copper and zinc was done by the atomic absorption spectrophotometer method,the total antioxidant status was assessed by the phosphomolybdenum method, MDA was evaluated by the Malondialdehyde method, total cholesterol was evaluated by the CHOD-POD method, HDL-cholesterol was evaluated by the precipitation end point method, and total triglycerides were evaluated by the GPO-POD method. The data was analysed by one way ANOVA, followed by Pearson's correlation. Result: We observed significantly increased (p <0.0001) copper and zinc levels in males and females as the age advanced, significantly increased (p <0.01) MDA and TAS levels, significantly declined (p <0.04) total triglyceride levels in adults, significantly declined (p <0.05) HDL levels and significantly declined (p = 0.04) VLDL levels in adults as the age advanced, in both the sexes. Conclusion: The increase in the levels of the micronutrients may have a direct correlation with the oxidative status as the age advances.


PubMed | Universiti Sains Malaysia and Alvas College
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2016

The title compound, C19H21N3O, comprises a central pyrazole ring which is N-connected to an aldehyde group and C-connected twice to substituted benzene rings. The pyrazole ring is twisted on the C-C single bond, and the least-squares plane through this ring forms dihedral angles of 82.44(5) and 4.52(5) with the (di-methyl-amino)-benzene and p-tolyl rings, respectively. In the crystal, weak C-HO hydrogen bonds link mol-ecules into supra-molecular tubes along the b axis.


PubMed | Universiti Sains Malaysia and Alvas College
Type: Journal Article | Journal: Acta crystallographica. Section E, Crystallographic communications | Year: 2016

The title compound, C20H20N2O, was studied as a part of our work on pyrazoline derivatives. It represents a trans-isomer. The central pyrazoline ring adopts an envelope conformation with the asymmetric C atom having the largest deviation of 0.107(1) from the mean plane. It forms dihedral angles of 6.2(1) and 86.4(1) with the adjacent p-tolyl and styrene groups, respectively. In the crystal, C-HO inter-actions link mol-ecules into infinite chains along the c axis.

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