| chemical components of the roots of tectona grandis and gmelina arborea. | | 1977 | 905417 |
| effect of lapachol, a naphthaquinone isolated from tectona grandis, on experimental peptic ulcer and gastric secretion. | lapachol, a naphthaquinone isolated from the roots of tectona grandis given at a dose of 5 mg kg-1 p.o. twice daily for 3 days was found to have an anti-ulcerogenic effect on subsequently induced experimental gastric and duodenal ulcers in rats and guinea-pigs. its action appears to be associated with an effect on the protein content of gastric juice, and it reversed aspirin-induced changes in peptic activity, protein and sialic acid. | 1987 | 2882001 |
| influence of teak (tectona grandis; family: verbenaceae) seed protein on some enzymes and liver lipids of albino rats. | the influence of protein, isolated from teak (tectona grandis) seed upon albino rats with respect to some of their serum, liver and intestinal enzymes and liver lipids has been studied. the protein in question contains aspartic acid, threonine, serine, glutamic acid, proline, glycine, alanine, valine, isoleucine, leucine, tyrosine, lysine, phenylalanine, histidine and arginine as determined by amino acid analyser. after feeding experiment an increase in body weight including the liver weight was ... | 1985 | 4070763 |
| effect of tectona grandis linn. (common teak tree) on experimental ulcers and gastric secretion. | | 1982 | 7185758 |
| in vitro screening of leishmanicidal activity in myanmar timber extracts. | seventy-five myanmar timber extracts belonging to 27 families were examined for their leishmanicidal activities. some timber extracts had significant leishmanicidal activity, especially extracts of millettia pendula, which exhibited the most potent activity (mlc 3.1 microg/ml, mic 1.6 microg/ml). other timber extracts showing potent activity included those from cedrela serrata, cedrela toona, cordia fragrantissima, calophyllum kunstleri, dalbergia cultrate, grevillea robusta, haplophragma adenop ... | 2004 | 15187448 |
| recovery of frog and lizard communities following primary habitat alteration in mizoram, northeast india. | community recovery following primary habitat alteration can provide tests for various hypotheses in ecology and conservation biology. prominent among these are questions related to the manner and rate of community assembly after habitat perturbation. here we use space-for-time substitution to analyse frog and lizard community assembly along two gradients of habitat recovery following slash and burn agriculture (jhum) in mizoram, northeast india. one recovery gradient undergoes natural succession ... | 2004 | 15298711 |
| the evaluation of nitric oxide scavenging activity of certain indian medicinal plants in vitro: a preliminary study. | the plant extracts of 17 commonly used indian medicinal plants were examined for their possible regulatory effect on nitric oxide (no) levels using sodium nitroprusside as an no donor in vitro. most of the plant extracts tested demonstrated direct scavenging of no and exhibited significant activity. the potency of scavenging activity was in the following order: alstonia scholaris > cynodon dactylon > morinda citrifolia > tylophora indica > tectona grandis > aegle marmelos (leaf) > momordica char ... | 2004 | 15383230 |
| isolation of colour components from native dye-bearing plants in northeastern india. | recently dyes derived from natural sources have emerged as important alternatives to synthetic dyes. a study was initiated in the year 2000 at the rrl (csir), jorhat to extract dyes from parts of five different plant species indigenous to northeastern india. the colour components responsible for dyeing were isolated and their chemical constituents were established based on chemical and spectroscopic investigations. the principal colour components from the species morinda angustifolia roxb., rubi ... | 2005 | 15474939 |
| heavy metal concentrations in redeveloping soil of mine spoil under plantations of certain native woody species in dry tropical environment, india. | total concentration of heavy metals (cd, cr, cu, fe, pb, ni, mn and zn) was estimated in the redeveloping soil of mine spoil under 5-yr old plantations of four woody species namely: albizia lebbeck, albizia procera, tectona grandis and dendrocalamus strictus. the data recorded in the present study were compared with other unplanted coal mine spoil colliery, which was around to the study site and adjoining area of dry tropical forest. among all the heavy metals, the maximum concentration was foun ... | 2005 | 15900783 |
| an extract from teak (tectona grandis) bark inhibited listeria monocytogenes and methicillin resistant staphylococcus aureus. | the aim of this study was to characterize the inhibitory mechanism in teak (tectona grandis) bark and to determine its effectiveness against listeria monocytogenes and methicillin resistant staphylococcus aureus (mrsa). | 2005 | 15960759 |
| contrasting soil ciliate species richness and abundance between two tropical plant species: a test of the plant effect. | we still have a rudimentary understanding about the mechanism by which plant roots may stimulate soil microbial interactions. a biochemical model involving plant-derived biochemical fractions, such as exudates, has been used to explain this "rhizosphere effect" on bacteria. however, the variable response of other soil microbial groups, such as protozoa, to the rhizosphere suggests that other factors could be involved in shaping their communities. thus, two experiments were designed to: (1) deter ... | 2006 | 16645921 |
| activity of quinones from teak (tectona grandis) on fungal cell wall stress. | teak ( tectona grandis l.f., verbenaceae) sawdust extract inhibited the growth of aspergillus niger. centrifugal partition chromatography was used to isolate the active compounds. by (1)h-nmr the active compounds were identified as deoxylapachol and tectoquinone. two a. niger transgenic strains which show induction of 1,3 -alpha-d-glucan synthase were used as a cell wall damage model. the result showed that deoxylapachol from t. grandis extract induced fungal cell wall stress. | 2006 | 16972200 |
| first record of sinoxylon conigerum gerstäcker (coleoptera: bostrichidae) in brazil. | this is the first register of sinoxylon conigerum attacking timber of teak (tectona grandis l.f.), mango tree (mangifera indica l.) and (astronium fraxinifolium schott) in the municipalities of cuiabá and várzea grande, state of mato grosso, brazil. | 2006 | 17144148 |
| evaluation of tectona grandis leaves for wound healing activity. | the frontal leaves of tectona grandis (verabinaceae) are widely used in the folklore for the treatment of various kinds of wounds, especially burn wound. the present study was carried out to evaluate the effect of hydrochloric extract of tectona grandis on experimentally induced wounds in rats and compare the effects observed with a known wound healing agent, aloe vera. the models selected were excision wound, incision wound, burn wound and dead space wound. a suitable gel formulation was select ... | 2007 | 17416566 |
| effect of tectona grandis on phenylhydrazine-induced anaemia in rats. | traditional oral report indicates that tectona grandis is used in the treatment of anaemia in togo. for this purpose, the extract of t. grandis leaves is evaluated on anaemia model of rat induced by intraperitoneal injection of phenylhydrazine at 40 mg/kg for 2 days. oral administration of t. grandis extract at 1 g/kg/day and 2 g/kg/day, to the rats previously treated with phenylhydrazine, increased the concentration of haemoglobin, red blood cells number, haematocrit and reticulocytes rate. mor ... | 2008 | 18504074 |
| kinetic and equilibrium studies on the removal of cd2+ ions from water using polyacrylamide grafted rice (oryza sativa) husk and (tectona grandis) saw dust. | the increase in the use of heavy metals has resulted in an increased flux of metallic substances into the aquatic environment which poses a danger to human health. the present work relates to the removal of cadmium ions by treatment with polyacrylamide grafted rice (oryza sativa) husk/saguan (tectona grandis) saw dust. the drinking water guideline value recommended by who for cadmium is 0.005 ppm.the adsorbent has been prepared by treatment of rice husk/saw dust with acrylamide. removal has been ... | 2009 | 18783881 |
| effect of tectona grandis linn. on dexamethasone-induced insulin resistance in mice. | the bark of tectona grandis linn. is traditionally used in the treatment of diabetes. | 2009 | 19168121 |
| verbascoside isolated from tectona grandis mediates gastric protection in rats via inhibiting proton pump activity. | evidences have suggested that tectona grandis (tg) attenuates gastric mucosal injury; however its mechanism has not yet been established. the aim of present study was to evaluate the gastroprotective mechanism of ethanolic extract of tg (e-etoh), butanolic fraction (fr-bu) and to identify its active constituents. anti-ulcer activities were evaluated against cold restraint (cru) and pyloric ligation (pl) induced gastric ulcer models and further confirmed through h(+) k(+)-atpase inhibitory activi ... | 2010 | 20388534 |
| tectone, a new antihyperglycemic anthraquinone from tectona grandis leaves. | a new anthraquinone (3,8-dihydroxy-2-methyl anthraquinone), named tectone (1), along with fourteen known compounds (2-15) comprised of five terpenoids (2-5, 15), four flavonoids (6-9), three flavone glycosides (10-12), and two phenolic glycosides (13-14) were isolated from the chloroform and n-butanol fractions of the ethanol extract of tectona grandis leaves. attempts were made to synthesize compound 1. this resulted in the synthesis of three additional anthraquinones (16-18), out of which comp ... | 2010 | 20420322 |
| antihyperglycemic activity of tectona grandis linn. bark extract on alloxan induced diabetes in rats. | tectona grandis linn.(saag - tick wood), an indigenous medicinal plant, has a folk reputation among the indian herbs as a hypoglycemic agent. the present study was carried out to evaluate the anti-hyperglycemic effect of t. grandis linn. bark extract in control and alloxan-diabetic rats. oral administration of the bark suspension of t. grandis (2.5 and 5 g/kg body wt.) for 30 days resulted in a significant reduction in blood glucose (from 250 ± 6.5 to 50 ± 2.5 mg/dl). thus, the present study cle ... | 2010 | 21170208 |
| effect of tectona grandis linn. seeds on hair growth activity of albino mice. | the seeds of tectona grandis linn. are traditionally acclaimed as hair tonic in the indian system of medicine. studies were therefore undertaken in order to evaluate petroleum ether extract of t. grandis seeds for its effect on hair growth in albino mice. the 5% and 10% extracts incorporated into simple ointment base were applied topically on shaved denuded skin of albino mice. the time required for initiation of hair growth as well as completion of hair growth cycle was recorded. minoxidil 2% s ... | 2010 | 21455447 |
| Antidiabetic, antihyperlipidemic and antioxidant potential of methanol extract of Tectona grandis flowers in streptozotocin induced diabetic rats. | To investigate antidiabetic, antihyperlipidemic and antioxidant activity of methanol extract of Tectona grandis (T. grandis) flowers (METGF) in streptozotocin (STZ) induced diabetic rats to supports its traditional use. | 2011 | 21914540 |
| in vitro antibacterial efficacy of 21 indian timber-yielding plants against multidrug-resistant bacteria causing urinary tract infection. | to screen methanolic leaf extracts of 21 timber-yielding plants for antibacterial activity against nine species of uropathogenic bacteria isolated from clinical samples of a hospital (enterococcus faecalis, staphylococcus aureus, acinetobacter baumannii, citrobacter freundii, enterobacter aerogenes, escherichia coli, klebsiella pneumoniae, proteus mirabilis, and pseudomonas aeruginosa). | 2013 | 24524024 |
| antimicrobial activity of thai medicinal preparation of khampramong temple used for cancer treatment and its plant components. | thai medicinal preparation of khampramong temple has been used for cancer treatment more than ten years ago. it is composed of eleven herbs. many anticancer drugs exhibited antimicrobial activity as antitumor antibiotics such as the anthracycline group [daunorubicin] and quinone group [mitomycin c]. | 2012 | 23964460 |
| anti microbial and anti-oxidant properties of the isolated compounds from the methanolic extract from the leaves of tectona grandis. | the compounds gallic acid (ga), rutin(r), quercitin (q), ellagic acid (ea) and sitosterol(s) were isolated from the methanolic extract of the leaves of tectona grandis. these compounds were subjected to antimicrobial and antioxidant activity. the zone of inhibition of isolated compounds was evaluated by cup plate method against bacteria i.e. staphylococcus aureus, bacillus subtilis, eschericia coli, klebsiella pneumoniae and fungi candida albicans. the anti oxidant activity of the extract and th ... | 2011 | 24826018 |
| spectral characterisation, antiviral activities, in silico admet and molecular docking of the compounds isolated from tectona grandis to chikungunya virus. | chikungunya infection is treated symptomatically with antipyretics and anti-inflammatory drugs without any specific antiviral drug till date. the lack of an approved antiviral drug and the emergence of virulent strains after 2006 epidemics emphasize the need for the development of potential antiviral drugs to chikungunya virus. hence, we studied the antiviral activity of the extracts and compounds isolated from tectona grandis leaves to both the asian and east central south african strains of ch ... | 2017 | 28063412 |
| antibacterial activity of ethanolic extract and compounds from fruits of tectona grandis (verbenaceae). | well known as teak, tectona grandis is widely used in african folk medicine for its pharmacological relevance. in cameroon, this species is a reputed laxative in the northern region while in the western region, it is used in the treatment of skin diseases and diarrhoea. | 2015 | 26245866 |
| antiplasmodial activity of selected medicinal plants used to treat malaria in ghana. | the use of medicinal plants for the treatment of diseases including malaria is commonplace in ghanaian traditional medicine, though the therapeutic claims for most plants remain unvalidated. antiplasmodial activity of the aqueous extracts and successively obtained petroleum ether, ethyl acetate and methanol fractions of the whole phyllanthus fraternus plant, the leaves of tectona grandis, terminalia ivorensis and bambusa vulgaris, and roots of senna siamea were studied against plasmodium falcipa ... | 2016 | 27174028 |
| phytoremediation of abandoned crude oil contaminated drill sites of assam with the aid of a hydrocarbon-degrading bacterial formulation. | environmental deterioration due to crude oil contamination and abandoned drill sites is an ecological concern in assam. to revive such contaminated sites, afield study was conducted to phytoremediate four crude oil abandoned drill sites of assam (gelakey, amguri, lakwa, and borholla) with the aid of two hydrocarbon-degrading pseudomonas strains designated n3 and n4. all the drill sites were contaminated with 15.1 to 32.8% crude oil, and the soil was alkaline in nature (ph8.0-8.7) with low moistu ... | 2014 | 24933892 |
| first report of lecanodiaspis dendrobii douglas, 1892 (hemiptera: lecanodiaspididae) and the associated parasitoid cephaleta sp. (hymenoptera: pteromalidae) in brazil. | lecanodiaspis dendrobii douglas, 1892 (hemiptera: coccoidea: lecanodiaspididae) and the associated parasitoid cephaleta sp. (hymenoptera: pteromalidae) are reported for the first time in brazil. specimens of this scale insect were collected on branches and stems of acacia mangium willd., leucaena leucocephala (lam.) de wit (fabaceae), morus nigra l. (moraceae), citrus reticulata blanco (rutaceae), tectona grandis l. f. (verbenaceae), anacardium occidentale (anacardiaceae), annona squamosa l. and ... | 2016 | 26871743 |
| food and feeding behaviour of asiatic elephant (elephas maximus linn.) in kuldiha wild life sanctuary, odisha, india. | the feeding behaviour of asiatic elephant (elephas maximus) with food reference was studied in kuldiha wildlife sanctuary in odisha during 2007 to 2009. though the study area houses a good number of plant species only 71 species were identified as elephant fodder plants. the food trail of elephant was observed as twig breaking, bark peeling, branch breaking, stem twisting uprooting and flower plucking in different regions of study area during different seasons. alteration of predominantly browsi ... | 2013 | 24006812 |
| fungal planet description sheets: 214-280. | novel species of microfungi described in the present study include the following from south africa: cercosporella dolichandrae from dolichandra unguiscati, seiridium podocarpi from podocarpus latifolius, pseudocercospora parapseudarthriae from pseudarthria hookeri, neodevriesia coryneliae from corynelia uberata on leaves of afrocarpus falcatus, ramichloridium eucleae from euclea undulata and stachybotrys aloeticola from aloe sp. (south africa), as novel member of the stachybotriaceae fam. nov. s ... | 2014 | 25264390 |
| assessment of air pollution stress on some commonly grown tree species in industrial zone of durgapur, west bengal, india. | the present study deals with the biochemical responses of some selected tree species with respect to increased air pollution in durgapur industrial city in india. areas in vicinity to industries possess very high concentrations of suspended particulate matter (571 microg/m3), sox (132 microg/m3) and nox (97 microg/m3) which shows significant correlations (p < 0.05) with the biochemical constituents of stressed plants. plants growing in industrial zone exhibit a considerable decline in total chlo ... | 2011 | 22324147 |
| bioactive apocarotenoids from tectona grandis. | the bioactive fractions of tectona grandis have yielded seven apocarotenoids, two of which have been isolated for the first time as natural products (tectoionols a and b). the chemical structures were determined through 1d and 2d nuclear magnetic resonance experiments. the absolute configuration of tectoionol a was determined using a modified mosher methodology. some nmr assignments for the compounds 9(s)-4-oxo-7,8-dihydro-beta-ionol and 3beta-hydroxy-7,8-dihydro-beta-ionone have been corrected ... | 2008 | 18834604 |
| how closely do the delta(13)c values of crassulacean acid metabolism plants reflect the proportion of co(2) fixed during day and night? | the extent to which crassulacean acid metabolism (cam) plant delta(13)c values provide an index of the proportions of co(2) fixed during daytime and nighttime was assessed. shoots of seven cam species (aloe vera, hylocereus monocanthus, kalanchoe beharensis, kalanchoe daigremontiana, kalanchoe pinnata, vanilla pauciflora, and xerosicyos danguyi) and two c(3) species (teak [tectona grandis] and clusia sp.) were grown in a cuvette, and net co(2) exchange was monitored for up to 51 d. in species ex ... | 2002 | 12177497 |
| physical, mechanical and hydration kinetics of particleboards manufactured with woody biomass (cupressus lusitanica, gmelina arborea, tectona grandis), agricultural resources, and tetra pak packages. | lignocellulosic wastes resulting from agricultural activities as well as tetra pak residues from urban centres can cause significant levels of pollution. a possible action to minimize this problem is to use them in the production of particleboards. the purpose of this study was to evaluate the physical, mechanical, and hydration properties of particleboards manufactured with the mixture of woody biomass (cupressus lusitanica, gmelina arborea, and tectona grandis) and either agricultural wastes [ ... | 2014 | 24519224 |
| characterization of arbuscular mycorrhizal fungus communities of aquilaria crassna and tectona grandis roots and soils in thailand plantations. | aquilaria crassna pierre ex lec. and tectona grandis linn.f. are sources of resin-suffused agarwood and teak timber, respectively. this study investigated arbuscular mycorrhizal (am) fungus community structure in roots and rhizosphere soils of a. crassna and t. grandis from plantations in thailand to understand whether am fungal communities present in roots and rhizosphere soils vary with host plant species and study sites. terminal restriction fragment length polymorphism complemented with clon ... | 2014 | 25397675 |
| allometric models and aboveground biomass stocks of a west african sudan savannah watershed in benin. | the estimation of forest biomass changes due to land-use change is of significant importance for estimates of the global carbon budget. the accuracy of biomass density maps depends on the availability of reliable allometric models used in combination with data derived from satellites images and forest inventory data. to reduce the uncertainty in estimates of carbon emissions resulting from deforestation and forest degradation, better information on allometric equations and the spatial distributi ... | 2016 | 27594897 |
| endogenous recipes for controlling arthropod ectoparasites of domestic poultry. | this study is a contribution to the inventory of medicinal plants and other methods used in controlling external parasitic diseases of backyard poultry in the localities of djougou and ouaké (department of donga, benin). it consists of a survey undertaken from december 2010 to march 2011 through visits and interviews with 210 poultry famers. the results indicate that 13 species of medicinal plants are used in controlling ectoparasites. annona senegalensis, tectona grandis, securidaca longepedunc ... | 2013 | 24252957 |
| biofabrication of broad range antibacterial and antibiofilm silver nanoparticles. | silver nanoparticles (agnps) were biosynthesized via a green route using ten different plants extracts (gnp1- caryota urens, gnp2-pongamia glabra, gnp3- hamelia patens, gnp4-thevetia peruviana, gnp5-calendula officinalis, gnp6-tectona grandis, gnp7-ficus petiolaris, gnp8- ficus busking, gnp9- juniper communis, gnp10-bauhinia purpurea). agnps were tested against drug resistant microbes and their biofilms. these nanoparticles (nps) were characterised using uv-vis spectroscopy, transmission electro ... | 2016 | 27676385 |
| ethnomedical study and iron content of some medicinal herbs used in traditional medicine in cote d'ivoire for the treatment of anaemia. | medicinal plants have been a source of succour in the control of many diseases in developing countries and anaemia is no exception. in this study, ethnomedical survey was carried out for recording medicinal plants used in northern and south-eastern côte d'ivoire against anaemia. also iron content was determined for some of the recorded plants using phenanthroline method. thirty (30) medicinal plants, covering 28 genera and 22 families were recorded. these plants were used to prepare 30 receipts ... | 2012 | 23983324 |
| toxicity and feeding deterrent effect of 2-methylanthraquinone from the wood extractives of tectona grandis on the subterranean termites coptotermes formosanus and reticulitermes speratus. | no-choice feeding tests using ethanol, chloroform, and acetone extractives of teak (tectona grandis) heartwood clearly showed feeding deterrent activity and toxicity to the subterranean termite reticulitermes speratus. the amount of 2-methylanthraquinone (maq) in teak wood extractives was not related to the feeding deterrents or toxicity, as shown by the no-choice feeding tests conducted using crude extractives containing various amounts of maq, maq alone, and fractions of crude extractives. as ... | 2016 | 27834795 |
| comparative efficacy of three epigeic earthworms under different deciduous forest litters decomposition. | an experiment was conducted during 1998-1999, in a deciduous forest located in the semi-arid tropics of central india, to evaluate the suitability of different forest litters as food material for the tropical epigeic earthworms i.e. eisenia fetida (savigny), perionyx excavatus (perrier) and dicogaster bolaui (michaelsen). the aim was to examine the influence of these earthworms on the decomposition processes of three types of forest litters i.e. tectona grandis (teak), madhuca indica (mahua) and ... | 2003 | 12618041 |
| physical and chemical properties of some imported woods and their degradation by termites. | the influence of physical and chemical properties of 20 species of imported wood on degradation of the wood by termites under field conditions was studied. the wood species studied were: sycamore maple, acer pseudoplatanus l. (sapindales: sapindaceae) (from two countries), camphor, dryobalanops aromatic c.f.gaertner (malvales: dipterocarpaceae), beech, fagus grandifolia ehrhart (fagales: fagaceae), f. sylvatica l. (from two countries), oak, quercus robur l., ash, fraxinus angustifolia vahl (lami ... | 2013 | 23906349 |
| identification and validation of quantitative real-time reverse transcription pcr reference genes for gene expression analysis in teak (tectona grandis l.f.). | teak (tectona grandis l.f.) is currently the preferred choice of the timber trade for fabrication of woody products due to its extraordinary qualities and is widely grown around the world. gene expression studies are essential to explore wood formation of vascular plants, and quantitative real-time reverse transcription pcr (qrt-pcr) is a sensitive technique employed for quantifying gene expression levels. one or more appropriate reference genes are crucial to accurately compare mrna transcripts ... | 2014 | 25048176 |
| isolation and phytotoxicity of terpenes from tectona grandis. | a study was carried out on the allelopathic potential of four forest species, tectona grandis, aleurites fordii, gliricidia sepium, and maytenus buxifolia. the most active species, t. grandis, was selected to perform a phytochemical study. a new compound, abeograndinoic acid, was isolated, and elucidation of its structure showed that this compound has an unusual carbon skeleton. a further 21 known terpenoids-including 4 sesquiterpenoids, 8 diterpenes and 9 triterpenes-also were isolated. a biosy ... | 2010 | 20237951 |
| adventitious roots, leaf abscission and nutrient status of flooded gmelina and tectona seedlings. | when flooded, seedlings of gmelina arborea roxb. produced more adventitious roots, had lower foliar mn concentrations and lost fewer leaves than seedlings of tectona grandis l.f. severing the adventitious roots produced by flooded gmelina seedlings increased leaf mn concentration and leaf abscission and reduced whole-plant dry matter production. flooded gmelina cuttings, which do not produce adventitious roots, abscised few leaves until foliar concentrations of mn and fe had risen substantially ... | 1989 | 14972970 |