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evaluation of ash from some tropical plants of nigeria for the control of sclerotium rolfsii sacc. on wheat (triticum aestivum l.).eleven ash samples, from organs of nine tropical plants, were screened for their abilities to inhibit mycelial growth and sclerotial germination of a nigerian isolate of sclerotium rolfsii on agar and in the soil. ten ash samples showed some activity against mycelial growth of s. rolfsii in vitro. ash samples from delonix regia stem wood, mangifera indica leaf and vernonia amygdalina leaf were most effective as each totally inhibited mycelial growth of s. rolfsii in vitro. ocimum gratissimum lea ...199816284852
clinical and immunobiochemical characterization of airborne delonix regia (gulmohar tree) pollen and cross-reactivity studies with peltophorum pterocarpum pollen: 2 dominant avenue trees from eastern india.delonix regia and peltophorum pterocarpum pollen are important aeroallergens for type 1 hypersensitivity in the tropics. the ige-binding proteins of d regia and their cross-allergenity with p pterocarpum pollen have not been evaluated.200920084846
biochemical changes in plant leaves as a biomarker of pollution due to anthropogenic activity.the air pollution due to anthropogenic activities seriously affected human life, vegetation, and heritage as well. the vegetation cover in and around the city mitigates the air pollution by acting as a sink for pollution. an attempt was made to evaluate biochemical changes occurred in four selected plant species, namely azadirachta indica, mangifera indica, delonix regia, and cassia fistula of residential, commercial, and industrial areas of nagpur city in india. it was observed that the correla ...201120721619
how dengue vector aedes albopictus (diptera: culicidae) survive during the dry season in dhaka city, bangladesh?in 2000, a dengue outbreak occurred in bangladesh that included dhaka city. both dengue vectors, aedes aegypti and ae. albopictus are present in bangladesh. aedes aegypti mosquitoes mainly breed in and around houses and ae. albopictus is an outside breeder. there are many old trees throughout dhaka city in different parks, streets and the university campus which may have holes that can contribute as potential breeding habitat for the dengue vector. therefore, a survey was conducted to investigat ...201425253210
effect of delonix regia leaf extract on glucose tolerance in glucose-induced hyperglycemic mice.delonix regia (fabaceae) leaf is used in folk medicine of bangladesh for the treatment of diabetes, but so far no scientific study has been done which may support its use in traditional medicine. the present study was carried out to evaluate the possible glucose tolerance efficacy of methanolic extract of delonix regia leaf using glucose-induced hyperglycemic mice. the extract at different doses was administered one hr prior to glucose administration and blood glucose level was measured after tw ...201122238481
Anti-Inflammatory Activity of Delonix regia (Boj. Ex. Hook).The present work was to evaluate the anti-inflammatory activity of Delonix regia leaves (Family: Caesalpiniaceae). The powder of Delonix regia leaves was subjected to extraction with ethanol in soxhlet extractor. The ethanol extract after preliminary phytochemical investigation showed the presence of sterols, triterpenoids, phenolic compounds and flavonoids. The anti-inflammatory activity was studied using carrageenan-induced rat paw edema and cotton pellet granuloma at a three different doses ( ...201222110490
dual cross-linked pulsatile beads for chronotherapy of asthma: development and evaluation.in the present investigation, pulsatile release beads were prepared by ionic gelation technique. theophylline dual-cross-linked beads were prepared by dropping dispersed phase of theophylline, delonix regia gum (drg), and sodium alginate into the dispersion phase of different concentration of calcium chloride solution followed by aluminium chloride solution. the formulated beads were further coated by eudragit l & s 100 in the ratio 1:2 w/w in order to achieve desired lag time. in vitro release ...201020626253
predictable pulsatile release of tramadol hydrochloride for chronotherapeutics of arthritis.the present investigation deals with the development of a ph and time-dependent press-coated pulsatile drug delivery system for delivering drugs into the colon. the system consists of a drug containing core, coated by a combination of natural polymer delonix regia gum (drg) and hydroxypropyl methylcellulose (hpmc k4m) in various proportions, which controls the onset of release. the whole system was coated with methacrylic acid copolymers, which not only prevents the drug release in the stomach, ...201020524906
aerobiological investigation and in vitro studies of pollen grains from 2 dominant avenue trees in kolkata, india.peltophorum pterocarpum and delonix regia are dominant avenue trees in the city of kolkata in india. they are well adapted to the humid tropical climate and also grow commonly in different parts of the country. their pollen grains are reported to be airborne.200818361098
genetic diversity in some perennial plant species with-in short distances.distinct morphophysiological variations observed for over 2 years with-in short distances among four perennial plants indicated genetic diversity among the lines growing at three places. the isozyme and sds polyacrylamide gel banding patterns as genetic markers were used to investigate four perennial species, namely dalbergia sissoo roxb., delonix regia (boj.) refin., cassia fistula l. and calotropis procera r. br. plant materials collected from three locations (agra, gwalior and lucknow) differ ...200717717991
genomic and cdna cloning, characterization of delonix regia trypsin inhibitor (drti) gene, and expression of drti in escherichia coli.degenerate primers were designed based on all possible sequences of the n-terminal and c-terminal regions of delonix regia trypsin inhibitor (drti). five hundred sixty-one bp of polymerase chain reaction (pcr) product was amplified using the above degenerate primers and genomic dna and cdna of delonix regia as a template. the amplified pcr products were cloned and sequenced. dna sequence analysis of cdna and genomic clones of drti have the same nucleotide sequence in the coding region, and manif ...200717213672
effect of certain bioactive plant extracts on clinical isolates of beta-lactamase producing methicillin resistant staphylococcus aureus.ethanolic extracts and some fractions from 10 indian medicinal plants, known for antibacterial activity, were investigated for their ability to inhibit clinical isolates of beta-lactamase producing methicillin-resistant staphylococcus aureus (mrsa) and methicillin-sensitive s. aureus (mssa). synergistic interaction of plant extracts with certain antibiotics was also evaluated. the mrsa test strains were found to be multi-drug resistant and also exhibited high level of resistance to common beta-l ...200515812867
crystal structure of the kunitz (sti)-type inhibitor from delonix regia seeds.the three-dimensional structure of a novel kunitz (sti) family member, an inhibitor purified from delonix regia seeds (drti), was solved by molecular replacement method and refined, respectively, to r(factor) and r(free) values of 21.5% and 25.3% at 1.75a resolution. the structure has a classical beta-trefoil fold, however, differently from canonical kunitz type (sti) inhibitors, its reactive site loop has an insertion of one residue, glu68, between the residues p1 and p2. surprisingly, drti is ...200314652016
evaluation of efficacy and safety of a herbal medicine used for the treatment of malaria.resistance of plasmodium falciparum to chloroquine has been reported in several countries. other anti-malarial drugs in use are expensive and not readily accessible to most people in malaria endemic countries. this has led to renewed interest in the development of herbal medicines that have the potential to treat malaria with little or no side effects. this study obtained a preliminary information on the safety and effectiveness of a plant decoction (am-1), used in treating malaria. the am-1 is ...200312820245
biochemical characterization of a lectin from delonix regia seeds.a lectin from delonix regia (drl) seeds was purified by gel filtration on sephadex g-100 followed by ion-exchange chromatography on diethylaminoethyl-sepharose and reverse-phase high-performance liquid chromatography on a c18 column. hemagglutinating activity was monitored using rat erythrocytes. drl showed no specificity for human erythrocytes of abo blood groups. sodium dodecyl sulfate-polyacrylamide gel electrophoresis (sds-page) revealed a single protein in the presence of 0.1 m of dithiothr ...200212168698
evidence that highly conserved residues of delonix regia trypsin inhibitor are important for activity.delonix regia trypsin inhibitor (drti) consists of a single-polypeptide chain with a molecular mass of 22 kda and containing two disulfide bonds (cys44-cys89 and cys139-cys149). sequence comparison with other plant trypsin inhibitors of the kunitz family reveals that drti contains a negatively charged residue (glu68) at the reactive site rather than the conserved arg or lys found in other kunitz-type trypsin inhibitors. site-directed mutagenesis yielded five mutants containing substitutions at t ...201021314607
first report of albizia lebbeck dieback caused by scytalidium dimidiatum in oman.over 200 albizia lebbeck trees at sultan qaboos university campus wilted and died. the symptoms were dieback of large branches due to infection by scytalidium dimidiatum. the fungus has also infected ficus benghalensis, f. carica, f. retusa, thespesia populnea, delonix regia and peltophorum petrocarpum. this is the first report of the fungus in oman and on a. lebbeck, t. populnea, d. regia and p. petrocarpum. the strain of this fungus has not been found to cause human disease in oman.200212041870
chemical and biological investigations of delonix regia (bojer ex hook.) raf.in this study, five compounds, lupeol (1), epilupeol (2), β-sitosterol (3), stigmasterol (4) and p-methoxybenzaldehyde (5) were isolated from the petroleum ether and dichloromethane fractions of a methanolic extract of the stem bark of delonix regia. antimicrobial screening of the different extracts (15 μg mm-2) was conducted by the disc diffusion method. the zones of inhibition demonstrated by the petroleum ether, carbon tetrachloride and dichloromethane fractions ranged from 9-14 mm, 11-13 mm ...201021134857
preparation and characterization of activated carbon from a new raw lignocellulosic material: flamboyant (delonix regia) pods.activated carbons were prepared from flamboyant pods by naoh activation at three different naoh:char ratios: 1:1 (ac-1), 2:1 (ac-2), and 3:1 (ac-3). the properties of these carbons, including bet surface area, pore volume, pore size distribution, and pore diameter, were characterized from n(2) adsorption isotherms. the activated carbons obtained were essentially microporous and had bet surface area ranging from 303 to 2463 m(2) g(-1).(13)c (cp/mas and mas) solid-state nmr shows that the lignocel ...201120869158
anopheles gambiae exploits the treehole ecosystem in western kenya: a new urban malaria risk?at six sites in western kenya, we explored the presence of anopheles immature stages in treeholes. an. gambiae larvae were found in 19 species, 13 of which are exotic. the most common exotic species were delonix regia, jacaranda mimosipholia, and eucalyptus citrodora. in kisumu city, longitudinal assessments of 10 flamboyant trees showed repeated presence of an. gambiae s.s. in treeholes with water. production of anopheles larvae did not correlate with habitat volume but with habitat height, sho ...200718165501
properties of delonix regia seed gum as a novel tablet binder.the mechanical and disintegration properties of paracetamol tablets formulated using delonix regia seed gum (drsg) as a binder have been studied in this work. acacia bp (acg) and tragacanth bp (trg) were used as official gum standards. the mechanical properties, i.e. tensile strength (ts) and brittle fracture index (bfi), showed that with an increase in concentration of the gum binder, the tensile strength increased while the bfi was reduced. the crushing strength - friability/disintegration tim ...201319702177
kinetics of methylene blue removal from aqueous solution using gulmohar (delonix regia) plant leaf powder: multivariate regression analysis.effects of process variables namely ph, dye concentration, adsorbent dosage, temperature, particle size and agitation speed on kinetics of methylene blue adsorption onto gulmohar plant leaf powder were investigated. quadratic models were proposed to predict pseudo second order rate constant and equilibrium uptake in terms of the process variables. model coefficients were determined by multiple regression analysis. statistical tools like student's t-test, f-test, anova and lack-of-fit were used t ...200919395158
rhizobium sp. strain ngr234 and r. fredii usda257 share exceptionally broad, nested host ranges.genetically, rhizobium sp. strain ngr234 and r. fredii usda257 are closely related. small differences in their nodulation genes result in ngr234 secreting larger amounts of more diverse lipo-oligosaccharidic nod factors than usda257. what effects these differences have on nodulation were analyzed by inoculating 452 species of legumes, representing all three subfamilies of the leguminosae, as well as the nonlegume parasponia andersonii, with both strains. the two bacteria nodulated p. andersonii, ...199910188270
anthocyanin characterization of pilot plant water extracts of delonix regia flowers.following the development of new applications of pilot plant scale extraction and formulation processes for natural active bioproducts obtained from various underutilized tropical plants and herbs, we have manufactured water-extracts from delonix regia flowers, grown in ivory coast. these extracts, which contain polyphenols, are traditionally home made and used as healthy bioproducts. they are reddish-coloured due to the presence of anthocyanins. the three major anthocyanins in these extracts ha ...200818596650
crystallization and preliminary crystallographic studies of schizolobium parahyba chymotrypsin inhibitor (spci) at 1.8 a resolution.spci, a kunitz-type chymotrypsin inhibitor, is a 180-amino-acid polypeptide isolated from schizolobium parahyba seeds. this inhibitor has been characterized as a highly stable protein over a broad ph and temperature range. spci was crystallized using a solution containing 0.1 m sodium acetate trihydrate buffer ph 4.6, 33%(v/v) peg 2000 and 0.2 m ammonium sulfate. data were collected to 1.80 a resolution from a single crystal of spci under cryogenic conditions. the protein crystallized in space g ...200718007042
antifungal activity of indian plant extracts.in vitro studies of water extracts of plants such as terminalia chebula, punica granatum, delonix regia and emblica officinalis were found to be detrimental to test dermatophytes.19989919899
hydrophilic polymeric nanoparticles prepared from delonix galactomannan with low cytotoxicity for ocular drug delivery.delonix is a galactomannan polysaccharide extracted from the endosperm of delonix regia plant. this study aims at the development of delonix nanoparticle and assesses its potential for ocular delivery by evaluating its in-vitro stability, toxicity and cellular uptake. fluorescent nanoparticles (bodipy-loaded nanoparticles) were prepared by a quality-by-design modified nanoprecipitation technique. optimized nanoparticles had mean sizes <240nm, pdi<0.2 and zeta potential of <-30mv. mixture of surf ...201727987808
a new method of preparation and some properties of 3-hydroxyproline.the hydrolyzate of delonix regia seed extract is fractionated sequentially on dowex 50 x 8 resin and on qae sephadex a 25. purification is completed by recrystallisation from ethyl alcohol. 3-hydroxyproline is destroyed by no2h and by chloramine t, which prevents from using most of the colorimetric reactions in use for 4-hydroxyproline. for its characterization, 3-hydroxyproline may be clearly separated from 4-hydroxyproline by tlc chromatography and by high voltage paper electrophoresis.1978698288
oxidation of zeaxanthin. isolation and properties of 3-hydroxyretinene.1. anthers of delonix regia flowers are a rich source of zeaxanthin. 2. oxidation of zeaxanthin with hydrogen peroxide in the presence of osmium tetroxide results in the formation of 3-hydroxyretinene as one of the products. 3. 3-hydroxyretinene gives 3-acetoxyretinene with acetic anhydride, and an oxime with hydroxylamine hydrochloride. 4. reduction of 3-hydroxyretinene with sodium borohydride yields 3-hydroxyvitamin a. 5. treatment of 3-hydroxyvitamin a with dry ethanolic hydrogen chloride res ...19665971787
carotenoids in delonix regia (gul mohr) flower. 196214029913
chemical characterization and antioxidant potential of wild ganoderma species from ghana.the chemical characterization and antioxidant potential of twelve wild strains of ganoderma sp. from ghana, nine (ls1-ls9) of which were found growing wild simultaneously on the same dying delonix regia tree, were evaluated. parameters evaluated included the nutritional value, composition in sugars, fatty acids, phenolic and other organic compounds and some vitamins and vitamin precursors. antioxidant potential was evaluated by investigating reducing power, radical scavenging activity and lipid ...201728125070
[feeding habits of the squirrel sciurus variegatoides (rodentia: sciuridae) in the nicoya peninsula, costa rica].food items consumed by the squirrel sciurus variegatoides atrirufus were determined in an agricultural setting in the nicoya peninsula (9 degrees 47' n, 84 degrees 56' w), costa rica, where two life zones (premontane moist forest basal belt transition, and tropical dry forest) predominate. by analyzing the gut contents of 120 squirrels, from february 1987 through january 1988, it was determined that coconut (cocos nucifera), indian almond (terminalia catappa) and flamboyant (delonix regia) were ...200618494334
air pollution tolerance index (apti) of some tree species growing near rail roads of madurai, tamil nadu (india).biological monitoring and assessment studies due to urban--rail road pollutants were carried out using air pollution tolerance index (apti) of plants. four plant (leaf) parameters--namely ascorbic acid, total chlorophyll, relative water content and leaf extract ph were combined together in a formulation signifying the apti of plants. apti was calculated for five different species such as azadirachta indica, delonix regia, ficus religiosa, pongamia pinnata and polyalthia longifolia growing in two ...201022312796
fungus-insect gall of phlebopus portentosus.phlebopus portentosus is a popular edible wild mushroom found in the tropical yunnan, china, and northern thailand. in its natural habitats, a gall often has been found on some plant roots, around which fungal fruiting bodies are produced. the galls are different from common insect galls in that their cavity walls are not made from plant tissue but rather from the hyphae of p. portentosus. therefore we have termed this phenomenon "fungus-insect gall". thus far six root mealy bug species in the f ...201525344264
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 ...201122324147
[molluscicide activity of some natural products on biomphalaria glabrata].the molluscicide activity of aqueous (macerated and boiled), hexanic and ethylic extracts of aristolochia brasiliensis, caesalpinia peltophoroides, caesalpinia pulcherrima, delonix regia, spathodea campanulata and tibouchina scrobiculata was evaluated in the laboratory. the solutions obtained from those extracts were tested on adults and egg masses of biomphalaria glabrata reared in the laboratory at 1, 10, 20, 100 and 1000 ppm concentrations. the most active of the extracts studied was d. regia ...20113796282
delonix regia leaf extract (drle): a potential therapeutic agent for cardioprotection.delonix regia (boj. ex. hook) is a flowering plant in the pea family found in tropical areas and its leaves are used informally to treat diseases in folk medicine. however, the cardioprotective effects in this plant are still unclear. in this study, we found that the delonix regia leaf extract (drle) (400 mg/kg/d) can reduce the mortality rate in an isoproterenol (iso)-induced heart injury and hypertrophy mouse model. decreased serum levels of creatine phosphokinase, ldh, got, tnf-alpha and incr ...201627936072
role of the lens in controlling physical dormancy break and germination of delonix regia (fabaceae: caesalpinioideae).physical dormancy occurs in all three subfamilies of fabaceae, namely mimosoideae, papilionoideae and caesalpinioideae, making it one of the largest plant families in terms of number of species with physical dormancy. however, little is known about the water gap structure and germination ecology of species in caesalpinioideae. freshly collected seeds of delonix regia (caesalpinioideae) did not imbibe water, thus they had physical dormancy. both dry heat and wet heat were effective in breaking do ...201726998975
anti-inflammatory effects of royal poinciana through inhibition of toll-like receptor 4 signaling pathway.inflammation is part of the non-specific immune response that occurs in reaction to any type of bodily injury. in some disorders the inflammatory process, which under normal conditions is self-limiting, becomes continuous and chronic inflammatory diseases develop subsequently including cardiovascular diseases, diabetes, cancer etc. barks of delonix regia is used traditionally in the treatment of inflammatory diseases. therefore, in this study we evaluated the therapeutic potential of d. regia et ...201626971223
delonix regia: historic perspectives and modern phytochemical and pharmacological researches.delonix regia (bojer ex hook) raffin (fabaceae), also known as flame of forest, is a semi-deciduous tree, distributed throughout madagascar, india, africa, and northern australia. various parts of the plant are traditionally used for the treatment of different ailments such as inflammation, rheumatism, bronchitis, diabetes, anemia, fever, gynecological disorders, and pneumonia. the plant possess antioxidant, hepatoprotective, gastroprotective, wound healing, antiarthritic, larvicidal, antimalari ...201626850344
phyto-synthesis and structural characterization of catalytically active gold nanoparticles biosynthesized using delonix regia leaf extract.biological methods of nanoparticles synthesis are ecologically sound and sustainable alternative to the conventional methods. on the basis of aforesaid premise, the present study deals with the optimization and fabrication of gold nanoparticles (au-nps) using easily available bio-resource, delonix regia leaf extract. the use of practically nontoxic natural extracts and water allows the synthesis pathways presented to be considered as ''green'' and so permitting the synthesized au-nps to be used ...201628330190
highly biocompatible collagen-delonix regia seed polysaccharide hybrid scaffolds for antimicrobial wound dressing.biomaterials based entirely on biological resources are ideal for tissue engineering applications. here we report the preparation of hybrid collagen scaffolds comprising gulmohar seed polysaccharide (gsp) and cinnamon bark extract as cross-linking agent. (1)h nmr spectrum of gsp confirms the presence of galactose and mannose in the ratio of 1:1.54, which was further corroborated using ft-ir. the hybrid scaffolds show better enzyme and thermal stability in contrast to pure collagen scaffold proba ...201626686167
studies on characterization and removal of methylene blue with delonix regia plant litters activated carbon encapsulated nano metal oxide.an advanced adsorbent material prepared by encapsulating nano-metaloxide on an activated carbon of delonix regia plant litters was tested for its efficiency and superiority as an improved, advanced activated carbon material. it was subjected to modern instrumental techniques to evolve its morphology and its structure by ftir, sem, tem, xrd, edax and bet studies. the size of mgo particles was in the range of 20 nm-25 nm. the surface area of nano composite was 632 m2 g(-1). experimental results, b ...201526364472
surface engineered nanostructured lipid carriers for efficient nose to brain delivery of ondansetron hcl using delonix regia gum as a natural mucoadhesive polymer.the objective of this investigation was to fabricate ondansetron hydrochloride [ond] loaded mucoadhesive nanostructured lipid carriers [nlcs] for efficient delivery to brain through nasal route. mucoadhesive nlcs thereby sustaining drug release for longer time in nasal cavity. nlcs were prepared by high pressure homogenization [hph] technique using glycerol monostearate [gms]; as solid lipid, capryol 90; as liquid lipid, soya lecithin; as surfactant and poloxamer 188; as cosurfactant. in the fab ...201425033434
encapsulation of phaseolus lunatus protein hydrolysate with angiotensin-converting enzyme inhibitory activity.the objective of recent research has been to seek alternative therapeutic treatments; for this reason, the use of protein hydrolysates from diverse sources has been studied. a way to guarantee that these treatments reach the site of action is through protection with covers, such as microcapsules. therefore, proteins from the legume phaseolus lunatus were hydrolyzed and encapsulated with a blend of delonix regia carboxymethylated gum/sodium alginate (50 : 50 w/w). hydrolysis release conditions in ...201325937975
development of sustained release antipsychotic tablets using novel polysaccharide isolated from delonix regia seeds and its pharmacokinetic studies.a natural polysaccharide was isolated from the seeds of delonix regia. the isolated polysaccharide could maintain aqueous equilibrium between the dosage form and the surrounding medium due to its massive competence of water absorption (80.72%) and swelling index (266.7%). the scanning electron micrograph of a polysaccharide exhibits rough surface with pores and crevices, hence, the drug release will be retarded because of the drug particles entrapment in the pores and crevices. further, the surf ...201224115903
nmr, hplc-esi-ms, and maldi-tof ms analysis of condensed tannins from delonix regia (bojer ex hook.) raf. and their bioactivities.the structures of the condensed tannins isolated from leaf, fruit, and stem bark of delonix regia (bojer ex hook.) raf. have been investigated with (13)c nuclear magnetic resonance ((13)c nmr) and high performance liquid chromatography electrospray ionization mass spectrometry (hplc-esi-ms) coupled with thiolysis and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (maldi-tof ms) analyses. the results showed that these condensed tannins from d. regia possessed structu ...201222515734
antioxidant and antimicrobial attributes and phenolics of different solvent extracts from leaves, flowers and bark of gold mohar [delonix regia (bojer ex hook.) raf].this paper describes the antioxidant and antimicrobial activities and phenolic components of different solvent (absolute methanol, absolute ethanol, absolute acetone, 80% methanol, 80% ethanol, 80% acetone and deionized water) extracts of leaves, flowers and bark of gold mohar [delonix regia (bojer ex hook.) raf.]. the extract yields from leaves, flowers and bark ranged from 10.19 to 36.24, 12.97 to 48.47 and 4.22 to 8.48 g/100 g dry weight (dw), respectively. overall, 80% methanol extract produ ...201122143540
delonix regia and casuarina equisetifolia as passive biomonitors and as bioaccumulators of atmospheric trace metals.the suitability of two common and ubiquitously distributed and exotic ornamental plant species in nigeria-delonix regia and casuarina equisetifolia as biomonitors and as effective bioaccumulators of atmospheric trace metals (cd, pb, zn and cu) has been evaluated. bark and leaf samples from these plant species were collected in june and july 2006 at five locations in benin city. four of the sampling sites were in areas of high traffic density and commercial activities, the fifth site is a remote ...201021174998
the chemical structure of galactomannan isolated from seeds of delonix regia.a galactomannan isolated from seeds of delonix regia was investigated. the specific rotation of the galactomannan was +15 degrees at 25 degrees c. the molecular mass of the galactomannnan was estimated to be 2.5 x 10(5). the ratio of d-mannose to d-galactose was estimated approximately to be 4.0:1.0 by hplc and (1)h-nmr. nmr ((1)h and (13)c) spectra, and methylation analysis of the galactomannan indicated that it was composed of 1,4-linked beta-d-mannose, 1,4,6-linked beta-d-mannose, and termina ...201020460705
development and evaluation of pulsatile drug delivery system using novel polymer.the aim of the present investigation was to develop a pulsatile drug delivery system based on an insoluble capsule body filled with theophylline microspheres and sealed with a swellable novel polymer plug isolated from the endosperm of seeds of higher plant delonix regia family-fabaceae. theophylline microspheres were prepared by solvent evaporation method using eudragit s 100. the swellable plugs of varying thickness and hardness were prepared by direct compression, which were then placed in th ...200919235549
antibacterial properties of traditionally used indian medicinal plants.in search of broad-spectrum antibacterial activity from traditionally used indian medicinal plants, 66 ethanolic plant extracts were screened against nine different bacteria. of these, 39 extracts demonstrated activity against six or more test bacteria. twelve extracts showing broad-spectrum activity were tested against specific multidrug-resistant (mdr) bacteria, methicillin-resistant staphylococcus aureus (mrsa) and extended spectrum beta-lactamases (esbetal)-producing enteric bacteria. in vit ...200717440624
medial pith cells per meter in twigs as a proxy for mitotic growth rate ({phi}/m) in the apical meristem.the φ model for plant mating system evolution proposes a causal link between φ, the number of mitoses that occur within a plant's lifetime from zygote to gamete production, and constraints on the evolution of inbreeding depression and thereby on the evolution of plant mating systems. through its use of plant stature, the φ model emphasizes the important role of morphology in creating developmental and genetic constraints on plant evolution. however, the estimation of φ itself is likely to be ext ...200621642119
purification, crystallization and preliminary crystallographic study of a kunitz-type trypsin inhibitor from delonix regia seeds.the kunitz-type trypsin inhibitor from seeds of flamboyant (delonix regia) has been purified to homogeneity and plate-like crystals suitable for x-ray analysis have been grown by the hanging-drop method using peg 6000 as a precipitant. the crystals belong to space group p2(1)2(1)2(1) with unit-cell parameters a = 32.15, b = 69.39, c = 72.54 a. x-ray diffraction data have been collected to 2.95 a resolution. the structure has been solved by molecular replacement using the known structures of tryp ...199910489463
primary sequence determination of a kunitz inhibitor isolated from delonix regia seeds.a serine proteinase inhibitor was purified from delonix regia seeds a leguminosae tree of the caesalpinioideae subfamily. the inhibitor named drti, inactivated trypsin and human plasma kallikrein with k(i )values 2.19x10(-8) m and 5.25 nm, respectively. its analysis by sds-page 10-20% showed that the inhibitor is a protein with a single polypeptide chain of m(r) 22 h da. the primary sequence of the inhibitor was determined by edman degradation, thus indicating that it contained 185 amino acids a ...200111397427
characterization of jamaican delonix regia and cassia fistula seed extracts.delonix regia and cassia fistula seed extracts were evaluated for their antioxidant activity, total phenolics, ash, zinc and fatty acid content. fourier transform infrared spectroscopy (ftir) was utilized to assess the chemical functionalities present within the seeds. antioxidant activity was determined by the 2,2-diphenyl-1-picrylhydrazyl (dpph) and trolox equivalent antioxidant capacity (teac) assays. total phenolics were determined by the folin-ciocalteu assay. lipid extracts were characteri ...201627034834
properties of a kunitz-type trypsin inhibitor from delonix regia seeds against digestive proteinases of anagasta kuehniella (z.) and corcyra cephalonica (s.) (lepidoptera: pyralidae).drti was effective against trypsin-like enzymes from a. kuehniella and c. cephalonica, however an artificial diet was insufficient to affect the survival and body weight of either insect. the inhibitor stimulated chymotrypsin-like enzymes and probably induced the synthesis of enzymes insensitive to tlck in neonate larvae.200920001900
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