| [biological evaluation of cuban plants. v]. | the study of the antimicrobial activity of aqueuos, alcoholic and ketonic extracts from plants growing in cuba is pursued. six species of the families rutaceae, portulacaceae, borraglinaceae and jasminaceae were analyzed, and their activity on bacteria with a human clinical interest was assessed. the best results were obtained from heliotropium campechianum, jazminum sambac and portulaca oleracea. | 1979 | 382281 |
| skeletal muscle relaxant action of an aqueous extract of portulaca oleracea in the rat. | the aqueous extract of portulaca oleracea produced skeletal muscle relaxation in rats following i.p. or oral administration, as assessed by the prolongation of pull-up time. the i.p. route of administration was more effective. when compared with chlordiazepoxide (20 mg/kg, i.p.), diazepam (40 mg/kg, i.p.) and dantrolene sodium (30 mg/kg, oral), the extract (200-1000 mg/kg, i.p.) proved a more effective skeletal muscle relaxant. with 1000 mg/kg i.p., 80% lethality was seen. the ld50 in an acute t ... | 1987 | 2889850 |
| effect of an aqueous extract of portulaca oleracea leaves on smooth muscle and rat blood pressure. | an aqueous extract of portulaca oleracea leaves and stems produced a dose-dependent relaxation of guinea pig fundus, taenia coli and rabbit jejunum and a dose-dependent contraction of the rabbit aorta. on spontaneously-beating rabbit right atria and electrically-paced left atria, the extract produced a dose-dependent negative inotropic and chronotropic effects. on rat blood pressure, the extract produced dose-dependent pressor responses. phentolamine reduced the relaxant effect of the extract on ... | 1988 | 3352283 |
| comparison of the skeletal muscle relaxant properties of portulaca oleracea extracts with dantrolene sodium and methoxyverapamil. | the effects of aqueous (aee), dialysable (dif) and methanol (mee) extracts of portulaca oleracea stems and leaves were compared with those of dantrolene sodium and methoxyverapamil (d-600) with respect to inhibition of twitch tension on the rat phrenic nerve-hemidiaphragm and with respect to contracture induced by nicotinic agonists on the frog rectus abdominis preparations. the extracts, dantrolene and d-600 inhibited twitch tension due to indirect electrical stimulation via the phrenic nerve ( ... | 1987 | 3657249 |
| effects of extracts of portulaca oleracea on skeletal muscle in vitro. | extracts of portulaca oleracea inhibited twitch tension due to direct (ms) and indirect electrical stimulation via the phrenic nerve (ns) of the rat hemidiaphragm muscle. the rank order of potency was dialysable extract greater than or equal to methanol extract greater than diethylether extract, although all exhibited equal efficacy. the non-dialysable extract did not inhibit twitch tension due to ms or ns. the dialysable, methanol and diethylether extracts inhibited tetanus tension, and attenua ... | 1987 | 3695556 |
| investigation into the mechanism of action of extracts of portulaca oleracea. | | 1987 | 3695560 |
| skeletal muscle relaxant properties of the aqueous extract of portulaca oleracea. | the skeletal muscle relaxant properties of an aqueous extract of portulaca oleracea were examined on the twitch and tetanus tension evoked by electrical stimulation using the rat phrenic nerve-hemidiaphragm and frog sciatic nerve-sartorius muscle preparations and on contractures induced by nicotinic agonists using the rat rectus abdominis muscle preparation. the extract (5-50 x 10(-4) g/ml) produced a dose-dependent initial enhancement, followed by a longer lasting depression of twitch tension a ... | 1986 | 3796017 |
| the skeletal muscle relaxant action of portulaca oleracea: role of potassium ions. | an aqueous extract of the stems and leaves of portulaca oleracea abolishes the twitch contraction of the directly stimulated rat hemidiaphragm preparation. the effects of the extract mimic qualitatively the action of potassium oxalate--a known constituent of portulaca oleracea--on the diaphragm. removal of k+ ions from the methanol extract by passing it through a cation exchange resin reduced the inhibitory effect of the extract. there was a positive correlation between the concentration of k+ i ... | 1993 | 8145574 |
| the muscle relaxant properties of portulaca oleracea are associated with high concentrations of potassium ions. | the juice and aqueous extracts from the plant portulaca oleracea have been used in west africa for a variety of medical purposes, and extracts were previously shown to have muscle relaxant properties on isolated nerve-muscle preparations. we have attempted to characterise the components responsible for this activity. ethanolic extracts caused an initial augmentation of twitch height in chick biventer cervicis preparations and then blockade which appeared to be mediated by an action directly on m ... | 1993 | 8145575 |
| factors responsible for inhibiting the motility of zoospores of the phytopathogenic fungus aphanomyces cochlioides isolated from the non-host plant portulaca oleracea. | in a survey of plant secondary metabolites regulating the behaviour of aphanomyces cochlioides zoospores, we found that root extracts of portulaca oleracea inhibited zoospore motility. bioassay-directed fractionation of portulaca constituents revealed that the inhibitory activity was dependent on the interaction of two chemically different factors. these were identified as a phenolic compound, n-trans-feruloyltyramine, which by itself was active as a zoospore stimulant, and an acidic compound, 1 ... | 1998 | 9827552 |
| interactive effects of selenium and mercury on the restoration potential of leaves of the medicinal plant, portulaca oleracea linn. | leaves of portulaca oleracea have the potential of regeneration, when grown in a distilled water medium. the two heavy metals, se and hg individually and in combination affected both shoot and root development. they completely arrested shoot development at all concentrations. however, they produced concentration-dependent changes in the development of roots, which ranged from their complete inhibition to variation in their initiation time, number and length. leaf decay was initiated on day 46 in ... | 1999 | 10635587 |
| detection of antifungal activity in portulaca oleracea by a single-cell bioassay system. | the antifungal activity of portulaca oleracea extracts against hyphal growth of various fungi was evaluated in real time using an automatic single-cell bioassay system. target organisms were the filamentous fungi aspergillus and trichophyton and the yeast candida. a colony of test fungi was in contact with the assay medium, or assay medium containing plant extract, in sequence. the antifungal activity of each fraction of p. oleracea was evaluated based on the dynamic hyphal growth response curve ... | 2000 | 10925396 |
| the analgesic and anti-inflammatory effects of portulaca oleracea l. subsp. sativa (haw.) celak. | many ethnic groups have used different species of portulaca oleracea l., a member of the family portulacaceae, as vegetable and also herbal medicine against several diseases for many centuries. a review of the records in both folkloric and scientific literature indicates that portulaca has many medicinal uses. after our previous preliminary screening of three species of the family for analgesic and anti-inflammatory properties, portulaca oleracea l. subsp. sativa (haw.) celak. (a cultivar) was c ... | 2000 | 11090998 |
| neuropharmacological actions of portulaca oleraceae l v. sativa (hawk). | portulaca oleracea l v. sativa (family: portulacaceae) is a warm-climate annual, cultivated in the arabian peninsula and used traditionally for alleviating pain and swelling. it was observed that a 10% ethanolic extract of this plant produced restriction of movement in animals during the routine screening studies. therefore the effects of the extract on the locomotor activity, threshold to noxious stimulus, anti-convulsant activity and relaxant effects on the skeletal muscle were studied. the ex ... | 2001 | 11390132 |
| evaluation of the cytotoxicity, mutagenicity and antimutagenicity of emerging edible plants. | this study evaluates the toxic, mutagenic and antimutagenic effects of emerging edible plants that are consumed as new leafy vegetables in taiwan. among eight plant extracts, only the extracts of sol (solanum nigrum l.) showed cytotoxicity to salmonella typhimurium ta100 in the absence of s9 mix. the toxicity of extracts from different parts of the sol plant, such as leaf and stem, immature fruit and mature fruit, towards s. typhimurium ta100 and human lymphocytes was also assayed. the immature ... | 2001 | 11527563 |
| ethnophysiology and herbal treatments of intestinal worms in dominica, west indies. | in rural dominican ethnophysiology worms reside in a human organ called the 'worm bag'. unchecked, worms can cause illness by growing in size and number, spreading out of the worm bag and into other organs. in this study of 'bush medicine', we use a measure of cognitive salience in free-listing tasks, which reveals five plants commonly used to treat intestinal worms. these were ambrosia hispida (asteraceae), aristolochia trilobata (aristlochiaceae), chenopodium ambrosioides (chenopodiaceae), por ... | 2002 | 11891089 |
| analyzing the light energy distribution in the photosynthetic apparatus of c4 plants using highly purified mesophyll and bundle-sheath thylakoids. | the chlorophyll fluorescence characteristics of mesophyll and bundle-sheath thylakoids from plant species with the c4 dicarboxylic acid pathway of photosynthesis were investigated using flow cytometry. ten species with the nadp-malic enzyme (nadp-me) biochemical type of c4 photosynthesis were tested: digitaria sanguinalis (l.) scop., euphorbia maculata l., portulaca grandiflora hooker, saccharum officinarum l., setaria viridis (l.) beauv., zea mays l., and four species of the genus flaveria. thi ... | 1996 | 12226432 |
| simple evaluation of the wound healing activity of a crude extract of portulaca oleracea l. (growing in jordan) in mus musculus jvi-1. | the preliminary wound healing activity of portulaca oleracea was studied using mus musculus jvi-1. for this purpose fresh homogenized crude aerial parts of portulaca oleracea were applied topically on the excision wound surface as single and two doses in different amounts. wound contraction and tensile strength measurements were used to evaluate the effect of portulaca oleracea on wound healing. the results obtained indicated that portulaca oleracea accelerates the wound healing process by decre ... | 2003 | 12963132 |
| essential oils from mediterranean lamiaceae as weed germination inhibitors. | the essential oils obtained from rosemary (rosmarinus officinalis l.), thyme (thymus vulgaris l.), and savory (satureja montana l.) and the four monoterpenes that are their major constituents have been analyzed by gc and gc-ms and tested for their allelopathic properties on the seeds of three different annual weeds (chenopodium album, portulaca oleracea, and echinochloa crus-galli) and three crops (raphanus sativus, capsicum annuum, and lactuca sativa), with the aim to evaluate in vitro their po ... | 2003 | 14518938 |
| malanga (xanthosoma sagittifolium) and purslane (portulaca oleracea) leaves reduce oxidative stress in vitamin a-deficient rats. | this study examined the ability of tropical vegetables to reduce oxidative stress induced by vitamin a deficiency. | 2004 | 15452401 |
| [effects of flavones extracted from portulaca oleracea on ability of hypoxia tolerance in mice and its mechanism]. | to identify anti-hypoxia ingredients extracted from portulaca oleracea and to find out the possible mechanism of its anti-hypoxia actions. | 2005 | 16282054 |
| catabolism of adenine derivatives in leaves: study of the role of light on the in vivo activity of xanthine dehydrogenase. | the in vivo activity of xanthine dehydrogenase (e.c. 1.2.1.37) was followed in leaf discs excised from illuminated or darkened plants. in cotyledons of pharbitis nil, 24 hours of darkness enhanced the in vivo activity of xanthine dehydrogenase which increased between 2 to 5-fold depending on the concentration of hypoxanthine of the solution where cotyledon discs were incubated. the same effect occurred in leaves of several other species, in plants with both high and low ureide content. however, ... | 1980 | 16661556 |
| fatty acid composition of some medicinally useful seeds. | fatty acid composition of seeds from the fruits of butea monosperma, jatropha glandulifera and portulaca oleracea of three different families, namely papilionaceae, euphorbiaceae and portulaceae were determined through gas liquid chromatography to find novel natural sources of essential fatty acids for human health and of economic interest. comparative studies were also performed to ascertain the utilization of each species for domestic as well as industrial purpose and the quality parameters de ... | 2006 | 17135159 |
| simultaneous determination of catecholamines and amino acids by micellar electrokinetic chromatography with laser-induced fluorescence detection. | a selective and sensitive method was developed for separation and simultaneous determination of catecholamines and amino acids by mekc with lif. interestingly enough, such work has been firstly performed on catecholamines derivatized with 4-chloro-7-nitro-2,1,3-benzoxadiazole and the detailed derivatization mechanism was discussed. after derivatization at 60 degrees c for 20 min, nbd-labeled catecholamines and amino acids were separated in a buffer system containing 10 mm sodium tetraborate-na2h ... | 2007 | 17313149 |
| protective effect of portulaca oleracea extracts on hypoxic nerve tissue and its mechanism. | the aim of this study was to investigate whether portulaca oleracea (po) extracts have hypoxic neuroprotective effects and if so, by what mechanism. after being orally administrated with the po extracts or distilled water for seven days, adult male balb/c mice were adapted to a normobaric low oxygen environment (10% oxygen and 90% nitrogen) for different time and then were sacrificed. the mouse cortices were used for histological analysis by hematoxylin and eosin (h-e staining). the activities o ... | 2007 | 17392109 |
| portulene, a new diterpene from portulaca oleracea l. | chromatographic fractionation of the chloroform extract of portulaca oleracea l. growing in egypt afforded a new clerodene diterpene portulene (1), in addition to the known compounds lupeol (2), beta-sitosterol (3), and daucosterol (4), which were reported for the first time from the title plant. the structures of the isolated compounds were unambiguously established through 1d, 2d, and mass spectral analyses. co-treatment of ccl(4) hepatic injured rats with 70% alcohol extract of p. oleracea si ... | 2008 | 19031244 |
| phenolic alkaloids as a new class of antioxidants in portulaca oleracea. | antioxidant activities of three phenolic alkaloids, i.e., oleracein a (oa), oleracein b (ob) and oleracein e (oe), isolated from portulaca oleracea were determined, based on scavenging activity against 1,1-diphenyl- 2-picryl-hydrazyl (dpph) radical and inhibitory effect on hydrogen peroxide-induced lipid peroxidation in rat brain homogenates. the dpph radical scavenging activities of these phenolic alkaloids were lower than caffeic acid but higher than ascorbic acid and alpha-tocopherol, being i ... | 2009 | 19140117 |
| weed hosts of meloidogyne arenaria and m. incognita common in tobacco fields in south carolina. | thirty-two weed species common in south carolina and one cultivar of tobacco were evaluated as hosts of meloidogyne arenaria race 2 and m. incognita race 3 in the greenhouse. egg mass production and galling differed (p < 0.05) among weed species. chenopodium album, euphorbia maculata, and vicia villosa were good hosts of m. arenaria. amaranthus palmeri, rumex crispus, amaranthus hybridus, ambrosia artemisiifolia, lpomoea hederacea var. integriuscula, setaria lutescens, sida spinosa, portulaca ol ... | 1988 | 19290313 |
| anti-hypoxic activity of the ethanol extract from portulaca oleracea in mice. | to investigate the effects of the ethanol extract from portulaca oleracea (eepo) on hypoxia models mice and to find the possible mechanism of its anti-hypoxic actions so as to elucidate the anti-hypoxia activity and provide scientific basis for the clinical use of portulaca oleracea. | 2009 | 19397978 |
| prevalence of salmonella in vegetables from mexico. | the present study is an overview of the role of vegetables as a transmission vehicle of salmonella in mexico. one hundred samples of each of 17 different vegetables were analyzed during a period of 18 months. salmonella was isolated from 98 samples. salmonella enterica serovar typhimurium was isolated from the highest percentage of samples with typeable salmonella isolates (23.9%), followed by s. enterica subsp. arizonae and salmonella choleraesuis each from 16.9%, salmonella gallinarum from 11. ... | 2009 | 19610340 |
| betacyanins from portulaca oleracea l. ameliorate cognition deficits and attenuate oxidative damage induced by d-galactose in the brains of senescent mice. | this experiment was designed to assess the protective effect of betacyanins from portulaca oleracea l. against the d-galactose (d-gal)-induced neurotoxicity in mice. betacyanins from portulaca oleracea markedly reversed the d-gal-induced learning and memory impairments, as measured by behavioral tests. the activities of superoxide dismutases (sod), catalase (cat), glutathione peroxidase (gpx) and glutathione reductase (gr) in d-gal-treated mice were enhanced, while the content of the lipid perox ... | 2010 | 19879120 |
| characterization of structures and antiviral effects of polysaccharides from portulaca oleracea l. | three polysaccharides including a neutral polysaccharide (rn), an acidic polysaccharide (ra) and a pectic polysaccharide (rp) were isolated from aerial part of portulaca oleracea l. and evaluated for their anti-herpes simplex virus type 2 (hsv-2) and anti-influenza a virus (ifv-a). rn was found to consist of glucose (glc), mannose (man) and arabinose (ara) with small amounts of galactose (gal), and identified to be an arabinoglucomannan. ra was mainly composed of gal and ara with a small proport ... | 2010 | 20410633 |
| fatty acid profile and cholesterol content of egg yolk from chickens fed diets supplemented with purslane (portulaca oleracea l.). | the aim of the present study was to evaluate the effects of purslane on egg production, egg weight, feed efficiency, yolk fatty acid composition, and egg cholesterol content in laying hens. | 2010 | 20564433 |
| an ethnobotanical survey of medicinal plants in sivrice (elazığ-turkey). | this study aimed to identify wild plants collected for medical purposes by the local people of sivrice county, located in the eastern anatolia region of turkey, and to establish the uses and local names of these plants. | 2010 | 20713142 |
| herbicidal activity of volatiles from coriander, winter savory, cotton lavender, and thyme isolated by hydrodistillation and supercritical fluid extraction. | the volatiles from coriandrum sativum l., satureja montana l., santolina chamaecyparissus l., and thymus vulgaris l. were isolated by hydrodistillation (essential oil) and supercritical fluid extraction (volatile oil). their effect on seed germination and root and shoot growth of the surviving seedlings of four crops ( zea mays l., triticum durum l., pisum sativum l., and lactuca sativa l.) and two weeds ( portulaca oleracea l. and vicia sativa l.) was investigated and compared with those of two ... | 2010 | 20886818 |
| antioxidant and anticholinesterase activities of eleven edible plants. | consumers have become more interested in beneficial effects of vegetables, fruits, and tea to protect their health. | 2011 | 21284538 |
| determination of fungal pathogens of common weed species in the vicinity of tokat, turkey. | this study was carried out to determine the fungal pathogens on chenopodium album l., cirsium arvense (l.) scop., convolvulus arvensis l., cynodon dactylon (l.) pers., delphinium consolida l., portulaca oleracea l., rumex crispus l., solanum nigrum l., sorghum halepense (l.) pers. and xanthium strumarium l. which were common weed species of agricultural areas. surveys were conducted in may-june and august-september in 2004-2005 growing seasons. during the surveys density and frequency of the abo ... | 2010 | 21542473 |
| ethanol extract of portulaca oleracea l. protects against hypoxia-induced neuro damage through modulating endogenous erythropoietin expression. | in addition to its role in erythropoiesis, erythropoietin is also appreciated for its neuroprotective effects, and it has been suggested for treatment of some ischemic-hypoxic neurovascular diseases. the protective effects of endogenous erythropoietin in the brain give rise to the hypothesis that modulating erythropoietin expression might be a better way for treatment of ischemia-hypoxia neurovascular diseases. we have found that ethanol extract of portulaca oleracea l. (eepo) could increase ery ... | 2011 | 21543202 |
| molecular cloning and partial characterization of a peroxidase gene expressed in the roots of portulaca oleracea cv., one potentially useful in the remediation of phenolic pollutants. | portulaca (portulaca oleracea cv.) efficiently removes phenolic pollutants from hydroponic solution. in plant roots, peroxidase (prx) is thought to be involved in the removal of phenolic pollutants by the cross-linking them to cell wall polysaccharides or proteins at the expense of reduction of hydrogen peroxide (h(2)o(2)). in this study, we found that portulaca roots secreted an acidic prx isozyme that had relatively high h(2)o(2) affinity. we isolated five prx genes, and the recombinant prx pr ... | 2011 | 21597193 |
| Protective effects of aqueous and ethanolic extracts of Portulaca oleracea L. aerial parts on H2O2-induced DNA damage in lymphocytes by comet assay. | The comet assay is a standard method for measuring DNA damage. In this study, the protective effects of ethanolic and aqueous extracts of Portulaca oleracea L. (P. oleracea) on human lymphocyte DNA lesions were evaluated with the comet assay. Lymphocytes were isolated from blood samples taken from healthy volunteers. Human lymphocytes were incubated in H(2)O(2) (50,100, and 200 µM), aqueous extract (0.05, 0.1, 0.5, 1, and 2.5mg/ml), and ethanolic extracts (0.05, 0.1, 0.5, 1, and 2.5mg/ml) of P. ... | 2011 | 21981871 |
| evaluation of effects of zingiber officinale on salivation in rats. | there are some herbal plants in iranian traditional system of medicine which are believed to be excellent remedies to alleviate the symptoms of xerostomia. the aim of the present study was to evaluate the effect of systemic administration of seven different herbal extracts on the rate of salivation in rats. the extracts of 7 herbs; zingiber officinale roscoe (zingiberaceae), citrus sinensis (l.) osbeck (rutaceae), artemisia absinthium l. (asteraceae), cichorium intybus l. (asteraceae), pimpinell ... | 2011 | 21874635 |
| hepatoprotective activity of aqueous extract of portulaca oleracea in combination with lycopene in rats. | to investigate the hepatoprotective activity of the aqueous extract of the aerial parts of portulaca oleracea (p. oleracea) in combination with lycopene against carbon tetrachloride induced hepatotoxicity in rats. | 2011 | 22022001 |
| effect of pre-planting irrigation, maize planting pattern and nitrogen on weed seed bank population. | pre-planting irrigation and planting patterns are important factors in weed management that effect on seed bank. additionally, the nitrogen is the most important factor in plant growth that affects weed-crop competition and ultimately, seed rain into the soil. a field experiment was conducted to study the effect of nitrogen application rates, pre-planting irrigation and maize planting patterns on weed seed bank population. experimental factors were nitrogen rates at 4 levels (200, 300, 400 and 5 ... | 2011 | 22696965 |
| purification and characterization of an antitumor polysaccharide from portulaca oleracea l. | in the present study, we purified a unique polysaccharide component (pop) from portulaca oleracea and found that it had pronounced anti-tumor effects in vivo model. tumor weight, immune organ index and t lymphocyte subsets were employed to detect the immunoregulatory and antitumor effects of pop after administration. hematological and biochemical analyses were also investigated in order to evaluate the toxicological aspects related to pop treatment. pop could significantly inhibit the growth of ... | 2012 | 23499074 |
| susceptibility of several common subtropical weeds to meloidogyne arenaria, m. incognita, and m. javanica. | experiments were conducted in the greenhouse to assess root galling and egg production of three root-knot nematode species, meloidogyne arenaria, m. incognita, and m. javanica, on several weeds common to florida agricultural land. weeds evaluated were amaranthus retroflexus (redroot pigweed), cyperus esculentus (yellow nutsedge), eleusine indica (goosegrass), portulaca oleracea (common purslane), and solanum americanum (american black nightshade). additionally, although it is recommended as a co ... | 2012 | 23482324 |
| bioactivity of apium petroselinum and portulaca oleracea essential oils as natural preservatives. | | 2015 | 25973158 |
| chemical composition, antimicrobial, insecticidal, phytotoxic and antioxidant activities of mediterranean pinus brutia and pinus pinea resin essential oils. | essential oils of the resins of pinus brutia and pinus pinea were evaluated for their biological potential. essential oils were characterized using gc-ms and gc/fid. in vitro antimicrobial, phytotoxic, antioxidant, and insecticidal activities were carried out using the direct contact and the fumigant assays, respectively. the chemical profile of the essential oils of the resins of p. pinea and p. brutia included mainly α-pinene (21.39% and 25.40%), β-pinene (9.68% and 9.69%), and caryophyllene ( ... | 2014 | 25556061 |
| antimicrobial, insecticidal and phytotoxic activities of cotinus coggyria scop. essential oil (anacardiaceae). | the essential oil of cotinus coggyria scop.' leaves was found to be rich in α-pinene (43.1%), limonene (21.3%) and β-myrcene (8.5%). in the antimicrobial screening, essential oil was notably active on staphylococcus aureus atcc 29213, s. aureus atcc baa-977, candida albicans atcc 14053 and c. parapsilosis atcc 22019 using the disc diffusion and volatilisation assays. the fumigant assay of the essential oil caused 70% and 100% mortality on the two pest adults of acanthoscelides obtectus and tribo ... | 2014 | 24980636 |
| chemical composition, herbicidal and antifungal activity of satureja cuneifolia essential oils from spain. | the chemical composition of essential oils from satureja cuneifolia growing in east spain was analyzed by gc, gc/ms. forty-five compounds accounting for 99.1% of the total oil were identified. camphor (47.6%), followed by camphene (13.6%) were the main compounds. their herbicidal and antifungal activity was tested in vitro against three weeds (amaranthus hybridus, portulaca oleracea and conyza canadensis) and eleven common pathogenic or saprophytic fungi (phytophthora citrophthora, p. palmivora, ... | 2016 | 27534131 |
| effect of portulaca oleracea extracts on growth performance and microbial populations in ceca of broilers. | the aim of this study was to investigate the effects of portulaca oleracea extracts on growth performance and microbial populations in the ceca of broilers. a total of 120 one-day-old broilers were randomly divided into 3 groups. portulaca oleracea extracts were added to diets at 0.2 and 0.4% (wt/wt; pol-0.2, pol-0.4), respectively. the control (con) group was administered with no p. oleracea extract supplementation. body weight gain and feed conversion ratio were recorded every 2 wk. on d 28 an ... | 2013 | 23571345 |
| portulaca oleracea l. as a prospective candidate inhibitor of hepatitis c virus ns3 serine protease. | hepatitis c virus (hcv) infection is a worldwide health problem affecting about 300 million individuals. hcv causes chronic liver disease, liver cirrhosis, hepatocellular carcinoma, and death. many side effects are associated with the current treatment options. natural products that can be used as anti-hcv drugs are thus of considerable potential significance. ns3 serine protease (ns3-sp) is a target for the screening of antiviral activity against hcv. the present work explores plants with anti- ... | 2015 | 25871297 |
| antibacterial attributes of apigenin, isolated from portulaca oleracea l. | the flavonoid apigenin was isolated from aerial part of p. oleracea l. the dried sample of plant was powdered and subjected to soxhlet extractor by adding 80 ml of ethanol : water (70 : 30). the extract was centrifuged at 11000 rpm for 30 min; supernatant was taken for further use. the fraction was concentrated and subjected to ptlc. the r f value of isolated apigenin was calculated (0.82). purified material was also subjected to its ir spectra, lc-ms, nmr, and hplc for structural elucidation. t ... | 2014 | 26904730 |
| an in vitro study of antileishmanial effect of portulaca oleracea extract. | leishmaniasis is caused by protozoa of leishmania genus and is considered as a zoonotic disease. it is a major public health problem worldwide, with high endemicity in developing countries like iran. various chemical drugs are used for leishmaniasis treatment, but their side-effects and the emergence of drug resistance have led to look for new effective compounds. the aim of this study was to introduce purslane (portulaca oleracea) as a traditional and medicinal herb which might act as a valuabl ... | 2016 | 28035114 |
| host suitability of 32 common weeds to meloidogyne hapla in organic soils of southwestern quebec. | thirty-two weeds commonly found in the organic soils of southwestern quebec were evaluated for host suitability to a local isolate of the northern root-knot nematode meloidogyne hapla under greenhouse conditions. galls were observed on the roots of 21 species. sixteen of the 21 had a reproduction factor (pf/pi = final number of m. hapla eggs and juveniles per initial number of m. hapla juveniles per pot) higher than carrot (pf/pi = 0.37), the major host crop in this agricultural area. tomato cv. ... | 1996 | 19277189 |
| additional hosts for the ring nematode, criconemella xenoplax. | some common legumes and weeds indigenous to peach orchards in south carolina were tested in greenhouse experiments to determine their host suitability for criconemella xenoplax. legumes that were hosts for the nematode were dwarf english trefoil (lotus corniculatus var. arvensis), big trefoil (l. uliginosis), birdsfoot trefoil (l. corniculatus), narrowleaf birdsfoot trefoil (l. tenuis), ball clover (trifolium nigrescens), rose clover (t. hirtum), subterranean clover (t. subterraneum), striate le ... | 1990 | 19287692 |
| combating against methicillin-resistant staphylococcus aureus - two fatty acids from purslane (portulaca oleracea l.) exhibit synergistic effects with erythromycin. | the aims of this study were to identify the active ingredients from portulaca oleracea l. (po) that could provide synergism with antibiotics against methicillin-resistant staphylococcus aureus (mrsa) and their possible mechanisms of resistance inhibition. | 2015 | 25212982 |
| synthesis and evaluation of substituted 3-(pyridin-2-yl)benzenesulfonamide derivatives as potent herbicidal agents. | in an attempt to obtain novel candidate compound for weed control, a series of newly substituted 3-(pyridin-2-yl)benzenesulfonamide derivatives 2 were designed and synthesized using compound ii7 as a lead compound by intermediate derivatization methods and their herbicidal activities were evaluated. the herbicidal activity assay in greenhouse tests showed several compounds (2g, 2i, 2j, 2k, 2l, 2m, 2n and 2o) exhibited significant herbicidal activity for controlling velvet leaf (abutilon theophra ... | 2016 | 26385445 |
| weeds ability to phytoremediate cadmium-contaminated soil. | an alternative method to other technologies to clean up the soil, air and water pollution by heavy metals is phytoremediation. therefore, a pot culture experiment was conducted at the college of agriculture, ferdowsi university of mashhad, mashhad, iran, in 2014 to determine the potential absorption of cadmium by portulaca oleracea (common purslane), solanum nigrum (black nightshade), abutilon theophrasti (velvetleaf) and taraxacum officinale (dandelion). the type of experiment was completely ra ... | 2016 | 26125671 |
| relationships between some soil parameters and weed community (case study: winter wheat fields of uremia-iran). | in order to find relationships between weed species distribution and soil ph, calcium carbonate (caco₃), electrical conductivity (ec), and organic matter percentage (om %), fields surveys were done in 50 wheats (triticum aestivum l.) fields of uremia county (one of the northwest counties of iran) in 2013. data sampling of weeds was conducted from the beginning of stem elongation until the end of heading stages of wheat. in each field, 20 quadrates (0.25 m²) were randomly placed along a "w" patte ... | 2015 | 27145592 |
| boa detoxification of four summer weeds during germination and seedling growth. | a recent greenhouse study revealed a significant reduction of germination and growth of redroot pigweed (amaranthus retroflexus) and common purslane (portulaca oleracea) by rye mulch, whereas velvetleaf (abutilon theophrasti) and common lambsquarters (chenopodium album) were not suppressed. since boa detoxification by metabolic alteration may influence the relation between the benzoxazinoid content of the soil mulch and weed suppression, we tested the dynamics in boa detoxification in different ... | 2012 | 22614450 |
| [allelopathic effects of invasive weed solidago canadensis on native plants]. | with growth chamber method, this paper studied the allelopathic potential of invasive weed solidago canadensis on native plant species. different concentration s. canadensis root and rhizome extracts were examined, and the test plants were trifolium repens, trifolium pretense, medicago lupulina, lolium perenne, suaeda glauca, plantago virginica, kummerowia stipulacea, festuca arundinacea, ageratum conyzoides, portulaca oleracea, and amaranthus spinosus. the results showed that the allelopathic i ... | 2005 | 16515192 |
| seed bank of cu-contaminated topsoils at a wood preservation site: impacts of copper and compost on seed germination. | is identification of seed bank (sb) species useful for sustainable management of vegetation restoration on cu-contaminated soils? how does cu contamination of the soil affect the sb and can incorporating compost into cu-contaminated soils counter the effects of cu? the topsoil sb was investigated at seven contaminated sub-sites of a wood preservation site. the germination parameters of the seeds were recorded using three substrates: a washed river sand (sand), the same sand spiked with cuso(4) t ... | 2013 | 22648020 |
| [heat-responsive mechanisms in plants revealed by proteomic analysis: a review]. | heat stress is a major abiotic stress that limits plant growth and productivity. in recent years, proteomic investigations provide more information for understanding the sophisticated heat-responsive molecular mechanism in plants at systematic biological level. the heat-responsive proteomic patterns in several plants, i. e., model plants (arabidopsis thaliana), staple food crops (soybean, rice and wheat), heat-tolerant plants (agrostis stolonifera, portulaca oleracea, and carissa spinarum), grap ... | 2015 | 26685622 |
| isolation of phytotoxic compounds from tree-of-heaven (ailanthus altissima swingle). | the aqueous root extract of ailanthus altissima showed allelopathic activity against radish (raphanus sativus l. cv. "saxa"), garden cress (lepidium sativum l.), and purslane (portulaca oleracea l.) seeds. a bioassay-oriented purification of active extracts, chromatographic fractions, and compounds demonstrated dose-dependent activity on germination and radicle growth of test seeds; radish seed was the most sensitive to allelochemicals. active compounds have been isolated: ailanthone, ailanthino ... | 2003 | 12590453 |
| field enhancement sample stacking for analysis of organic acids in traditional chinese medicine by capillary electrophoresis. | a technique known as field enhancement sample stacking (fess) and capillary electrophoresis (ce) separation has been developed to analyze and detect organic acids in the three traditional chinese medicines (such as portulaca oleracea l., crataegus pinnatifida and aloe vera l.). in fess, a reverse electrode polarity-stacking mode (repsm) was applied as on-line preconcentration strategy. under the optimized condition, the baseline separation of eight organic acids (linolenic acid, lauric acid, p-c ... | 2012 | 22381886 |
| wound healing in diabetes mellitus: traditional treatment modalities. | the healing of wound is a complex process which requires the interactions of different cells and extracellular molecules. the normal wound healing process can be divided into four overlapping phases i.e. haemostasis, inflammation, proliferation and remodeling. in diseased condition like diabetes mellitus, the wound healing process is grossly impaired, resulting in chronic wounds which fail to heal. in the past decades, several researchers have tested various traditional medicines obtained from t ... | 2010 | 20931161 |
| an extensive alien plant inventory from the inhabited areas of galapagos. | plant invasions are causing habitat degradation in galapagos. problems are concentrated on the four inhabited islands. plants introduced to rural areas in the humid highlands and urban areas on the arid coast act as foci for invasion of the surrounding galapagos national park. | 2010 | 20421999 |
| low humidity effects on photosynthesis in single leaves of c4 plants. | it was hypothesized that since sub-stomatal carbon dioxide concentrations are often saturating to photosynthesis at ambient external concentrations in c4 plants at high light, photosynthesis might be insensitive to partial stomatal closure caused by large leaf-air water vapor pressure difference. the response of stomatal conductance and photosynthesis at high irradiance to vapor pressure difference was determined under uniform conditions in c4 plants grown under controlled conditions, and outdoo ... | 1982 | 28311433 |
| elemental characterization of wild edible plants from countryside and urban areas. | thirteen elements (na, k, ca, mg, fe, mn, cu, zn, cr, co, cd, ni and pb) in 11 different wild edible plants (wep) (amaranthus retroflexus, foeniculum vulgare, cichorium intybus, glebionis coronaria, sonchus spp., borago officinalis, diplotaxis tenuifolia, sinapis arvensis, papaver rhoeas, plantago lagopus and portulaca oleracea) collected from countryside and urban areas of bari (italy) were determined. b.officinalis and p.rhoeas could represent good nutritional sources of mn and fe, respectivel ... | 2015 | 25660854 |
| allelopathic effects of medicago sativa l. and vicia cracca l. leaf and root extracts on weeds. | in this study, the allelopathic potential of different concentration (5, 25 and 50%) of m. sativa and v. cracca leaf and root extracts were evaluated on germination and radicle length of four weed species (amaranthus retroflexus l., lolium perenne l., ipomoea hederacea l. and portulaca oleracea l.) in laboratory condition. as a result, germination and radicle length of all species were reduced by the extract from m. sativa and v. cracca leaf and root at different percentage. increasing the water ... | 2007 | 19086510 |
| bioaccumulation and translocation of heavy metals by nine native plant species grown at a sewage sludge dump site. | in the present study, nine native plant species were collected to determine their potential to clean up nine heavy metals from soil of a sewage sludge dump site. almost all nine plant species grown at sewage sludge dump site showed multifold higher concentrations of heavy metals as compared to plants grown at the reference site. all the investigated species were characterized by a bioaccumulation factor (bf) > 1.0 for some heavy metals. bf was generally higher for cd, followed by pb, co, cr, cu, ... | 2016 | 27184987 |
| identification of genes involved in the drought adaptation and recovery in portulaca oleracea by differential display. | portulaca oleracea is one of the richest plant sources of ω-3 and ω-6 fatty acids and other compounds potentially valuable for nutrition. it is broadly established in arid, semiarid and well-watered fields, thus making it a promising candidate for research on abiotic stress resistance mechanisms. it is capable of withstanding severe drought and then of recovering upon rehydration. here, the adaptation to drought and the posterior recovery was evaluated at transcriptomic level by differential dis ... | 2015 | 25767913 |
| comparative proteomic analysis of the thermotolerant plant portulaca oleracea acclimation to combined high temperature and humidity stress. | elevated temperature and humidity are major environmental factors limiting crop yield and distribution. an understanding of the mechanisms underlying plant tolerance to high temperature and humidity may facilitate the development of cultivars adaptable to warm or humid regions. under conditions of 90% humidity and 35 °c, the thermotolerant plant portulaca oleracea exhibits excellent photosynthetic capability and relatively little oxidative damage. to determine the proteomic response that occurs ... | 2012 | 22616707 |
| chloroplast biogenesis 49 : differences among angiosperms in the biosynthesis and accumulation of monovinyl and divinyl protochlorophyllide during photoperiodic greening. | various angiosperms differed in their monovinyl and divinyl protochlorophyllide biosynthetic capabilities during the dark and light phases of photoperiodic growth. some plant species such as cucumis sativus l., brassica juncea (l.) coss., brassica kaber (dc.) wheeler, and portulaca oleracea l. accumulated mainly divinyl protochlorophyllide at night. monocotyledonous species such as avena sativa l., hordeum vulgare l., triticum secale l., zea mays l., and some dicotyledonous species such as phase ... | 1985 | 16664351 |
| glucosides from mboa and boa detoxification by zea mays and portulaca oleracea. | incubation of zea mays cv. nicco seedlings with 6-methoxybenzoxazolin-2(3h)-one (mboa) led to a minor detoxification product hitherto only found in poaceae. this new compound was identified as 1-(2-hydroxy-4-methoxyphenylamino)-1-deoxy-beta-glucoside 1,2-carbamate (1) (methoxy glucoside carbamate) and represents an analogue to the previously described 1-(2-hydroxyphenylamino)-1-deoxy-beta-glucoside 1,2-carbamate (glucoside carbamate) from benzoxazolin-2(3h)-one (boa). in portulaca oleracea var. ... | 2006 | 16441064 |
| characterization of cd-, pb-, zn-resistant endophytic lasiodiplodia sp. mxsf31 from metal accumulating portulaca oleracea and its potential in promoting the growth of rape in metal-contaminated soils. | the aim of this study was to characterize the features of a cd-, pb-, and zn-resistant endophytic fungus lasiodiplodia sp. mxsf31 and to investigate the potential of mxsf31 to remove metals from contaminated water and soils. the endophytic fungus was isolated from the stem of portulaca oleracea growing in metal-contaminated soils. the maximum biosorption capacities of mxsf31 were 3.0 × 10(3), 1.1 × 10(4), and 1.3 × 10(4) mg kg(-1) for cd, pb, and zn, respectively. the biosorption processes of cd ... | 2014 | 24062066 |
| molecular characterization, vector identification and sources of phytoplasmas associated with brinjal little leaf disease in india. | brinjal little leaf (bll) is a widespread disease of phytoplasma etiology in india that induces severe economic losses. surveys were conducted in eight brinjal-growing states of india during july 2014 to september 2015 and eighteen bll samples showing little leaf, phyllody and witches' broom symptoms were collected for phytoplasma identification. presence of phytoplasmas was confirmed in all the eighteen bll samples using polymerase chain reaction with phytoplasma-specific primer pairs (p1/p6, r ... | 2017 | 28391472 |
| hydro-ethanolic extract of portulaca oleracea affects beta-adrenoceptors of guinea pig tracheal smooth muscle. | thestimulatory effect of the extract of portulaca oleracea (p. olerace) on β-adrenoceptor of tracheal smooth muscle was examined.to examine β-adrenoceptor stimulatory effect, concentration response curve to isoprenaline was obtained in pre-contracted tracheal smooth muscle in the presence of three concentrations of aqueous-ethanolic extract, propranolol, and saline. values of ec50 (the effective concentration of isoprenaline, causing 50% of maximum response) and dose ratio-1(cr-1) were measured. ... | 2016 | 28243284 |
| estimation of proximate composition, micronutrients and phytochemical compounds in traditional vegetables from andaman and nicobar islands. | in present study, 10 preferred traditional vegetables from andaman and nicobar islands, india, were analysed for nutritional profiles. moisture content in their edible parts ranged from 83.43 to 94.78%. maximum ash content was recorded in portulaca oleracea, crude protein in colocasia esculenta, crude fibre in eryngium foetidum and fat in e. foetidum. phosphorus was maximum in ipomea aquatica, potassium in c. esculenta, zinc, calcium and manganese in centella asiatica, copper in sauropus androgy ... | 2011 | 21615278 |
| scientific evaluation of medicinal plants used for the treatment of abnormal uterine bleeding by avicenna. | abnormal uterine bleeding (aub) is one of the prevalent gynecological disorders that cause considerable morbidity and management of that plays an important role in protecting women's health. this review focuses on medicinal plants mentioned by avicenna, a great iranian philosopher and physician (a.d. 980-1037), in his book canon for treatment of aub. | 2015 | 25637505 |
| ethno-medicinal survey of important plants practiced by indigenous community at ladha subdivision, south waziristan agency, pakistan. | medicinal flora plays a vital role in treating various types of ailments in living beings. the present study was planned to investigate and document systematically the indigenous knowledge in a scientifically little explored area of ladha sub-division, south waziristan agency, pakistan. hence, this study would contribute positively to the field of ethnopharmacology. | 2016 | 27846856 |
| chemical composition and herbicidal activity of the essential oil from a cistus ladanifer l. population from spain. | the essential oil composition of cistus ladanifer grown in central spain was analysed by gas chromatography and gas chromatography/mass spectrometry, revealing it to be rich in oxygenated compounds, with trans-pinocarveol (20.00%), bornyl acetate (7.03%) and terpinen-4-ol (6.37%) as the main monoterpene compounds. viridiflorol (13.59%) and ledol (4.36%) were the main constituents of the oxygenated sesquiterpene fraction. large amounts of α-pinene (4.70%) were found in the hydrocarbonated fractio ... | 2012 | 22007862 |
| differential sensitivity to humidity of daily photosynthesis in the field in c3 and c4 species. | net photosynthesis was measured under field conditions in maryland, u.s.a. on several days in the c4 species amaranthus hybridus and portulaca oleracea, and the c3 species chenopodium album. two similar fully exposed canopy leavesof the same specieswere measured each day, following ambient patterns of air temperature and irradiance. one leaf of the pair was exposed to air at the ambient humidity, while the other leaf was exposed to wetter air, such that the leaf to air water vapor pressure diffe ... | 1983 | 28310183 |
| pharmacological safety evaluation of a traditional herbal medicine "zereshk-e-saghir" and assessment of its hepatoprotective effects on carbon tetrachloride induced hepatic damage in rats. | "zereshk-e-saghir" (zes), one of the traditional herbal medicines in old manuscripts of persian hakims, has been used for the treatment of liver disorders. this current study is aimed to evaluate zes effects on animal model to investigate its safety and hepatoprotective activity. | 2016 | 27426508 |
| biomolecular characterization of putative antidiabetic herbal extracts. | induction of glut4 translocation in the absence of insulin is considered a key concept to decrease elevated blood glucose levels in diabetics. due to the lack of pharmaceuticals that specifically increase the uptake of glucose from the blood circuit, application of natural compounds might be an alternative strategy. however, the effects and mechanisms of action remain unknown for many of those substances. for this study we investigated extracts prepared from seven different plants, which have be ... | 2016 | 26820984 |
| estimation of base temperatures for nine weed species. | experiments were conducted to test several methods for estimating low temperature thresholds for seed germination. temperature responses of nine weeds common in annual agroecosystems were assessed in temperature gradient experiments. species included summer annuals (amaranthus albus, a. palmeri, digitaria sanguinalis, echinochloa crus-galli, portulaca oleracea, and setaria glauca), winter annuals (hirschfeldia incana and sonchus oleraceus), and conyza canadensis, which is classified as a summer ... | 2000 | 10938833 |
| botanicals: an alternative remedy to radiotherapy-induced dysuria. | everyday, many patients get radiotherapy for prostatic, rectal, uterine cervix and other pelvic organs cancer. dysuria is common in pelvic, especially prostate radiotherapy, but there is not any established and confirmed treatment for this therapeutic side effect. therefore, an alternative therapeutic method, using herbal preparation, may be an effective solution. this study seeks a defensible suggestion in iranian traditional medicine (itm). in itm, a few medicinal herbs such as plantago psylli ... | 2015 | 25637157 |
| enterobacter sp. i-3, a bio-herbicide inhibits gibberellins biosynthetic pathway and regulates abscisic acid and amino acids synthesis to control plant growth. | very few bacterial species were identified as bio-herbicides for weed control. the present research was focused to elucidate the plant growth retardant properties of enterobacter sp. i-3 during their interaction by determining the changes in endogenous photosynthetic pigments, plant hormones and amino acids. the two bacterial isolates i-4-5 and i-3 were used to select the superior bacterium for controlling weed seeds (echinochloa crus-galli l. and portulaca oleracea l.) germination. the post-ino ... | 2016 | 27825481 |
| analysis of trace elements in chinese therapeutic foods and herbs. | the bioactive elements in chinese therapeutic foods and herbs that are frequently consumed by people in both the east and west are analyzed. these elements in their appropriate dosage range are considered to be beneficial to health. inductively coupled plasma mass spectrometry (icp-ms) and atomic absorption spectrometry (aas) were applied to determine the concentrations of various elements. twenty-two chinese therapeutic foods and herbs, resourced from the traditional high therapeutic quality ar ... | 2009 | 19655402 |