| tropical fruit trees as bioindicators of industrial air pollution in southeast brazil. | psidium guajava l., psidium cattleyanum sabine and mangifera indica l. were tested under field conditions as possible tropical bioindicators of industrial air pollution. the study was performed around the industrial complex of cubatão, se brazil, which comprises 23 industries, including fertilizer, cement, chemical, petrochemical, and steel plants, with 110 production units and 260 emission sources of pollutants. saplings were exposed to environmental conditions during four periods of 16 weeks e ... | 2002 | 12437286 |
| ethnopharmacological studies of antimicrobial remedies in the south of brazil. | this study reports the antimicrobial evaluation of the species most commonly used in rio grande do sul (rs), the southernmost state of brazil, for treating conditions likely to be associated with microorganisms. a four-stage process of documentation and evaluation was conducted: (a). review of rs ethnobotanical studies; (b). analysis of traditional uses; (c). literature survey on phytochemical and pharmacological data; (d). microbiological screening of selected plants. from the 149 species initi ... | 2004 | 14698521 |
| variability in habitat, diet, and social structure of hapalemur griseus in ranomafana national park, madagascar. | this study investigated the effects of habitat on the diet, population density, and social structure of a small-bodied folivore, hapalemur griseus. three groups of h. griseus were followed at two study sites (tala and vato) within ranomafana national park in southeastern madagascar. these two sites differed in degree of habitat disturbance, forest composition, and forest structure, as determined by botanical plots (50 x 10 m) which were monitored twice monthly in the home ranges of three study g ... | 2006 | 16552734 |
| effect of psidium cattleianum leaf extract on streptococcus mutans viability, protein expression and acid production. | plants naturally produce secondary metabolites that can be used as antimicrobials. the aim of this study was to assess the effects of psidium cattleianum leaf extract on streptococcus mutans. the extract (100%) was obtained by decoction of 100 g of leaves in 600 ml of deionized water. to assess killing, s. mutans biofilms were treated with water (negative control) or various extract dilutions [100, 50, 25% (v/v) in water] for 5 or 60 min. to evaluate the effect on protein expression, biofilms we ... | 2008 | 18367836 |
| absence of mutagenicity effects of psidium cattleyanum sabine (myrtaceae) extract on peripheral blood and bone marrow cells of mice. | cattley guava (psidium cattleyanum sabine) is a native fruit of brazil that is popular both as a sweet food and for its reputed therapeutic properties. we examined whether it could damage dna using the alkaline single-cell gel electrophoresis (comet assay) and the micronucleus test in leukocytes and in bone marrow cells of mice. p. cattleyanum leaf extract was tested at concentrations of 1000, 1500 and 2000 mg/kg. n-nitroso-n-ethylurea was used as a positive control. peripheral blood leukocytes ... | 2008 | 18752195 |
| protective efficacy of psidium cattleianum and myracrodruon urundeuva aqueous extracts against caries development in rats. | this study evaluated the influence of psidium cattleianum sabine (myrtaceae) and myracrodruon urundeuva allemão (anacardiaceae) aqueous extracts on s. mutans counts and dental enamel micro-hardness of rats submitted to a cariogenic challenge. sixty wistar rats were distributed in three groups and received water (control) or aqueous extracts of psidium cattleianum or myracrodruon urundeuva as hydration solution. initially the animals had their sublingual and submandibular salivary glands surgical ... | 2010 | 20645817 |
| manipulating risk communication: value predispositions shape public understandings of invasive species science in hawaii. | most invasive species control programs are routine, but a small number prompt public controversy. local value predispositions shape lay perception of the relative risks of invasive species and efforts to control them. because control efforts are generally led by government scientists, lay perceptions of invasive species science are colored by public judgment of government credibility. this article examines the proposed release of an insect for biological control of the invasive strawberry guava ... | 2011 | 23833025 |
| characterization of in vitro antifungal activities of small and american cranberry (vaccinium oxycoccos l. and v. macrocarpon aiton) and lingonberry (vaccinium vitis-idaea l.) concentrates in sugar reduced fruit spreads. | in this study, cranberry and lingonberry concentrates were added to commercial sugar-reduced fruit spreads (raspberry-aloe vera, strawberry-guava, and strawberry-lime), and tested for their antifungal activities. selected strains of the species absidia glauca, penicillium brevicompactum, saccharomyces cerevisiae and zygosaccharomyces bailii, as well as xerophilic environmental isolates of the genera penicillium and eurotium were used for challenge testing. initially, varying concentrations of sy ... | 2015 | 25868124 |
| investigating the host-range of the rust fungus puccinia psidii sensu lato across tribes of the family myrtaceae present in australia. | the exotic rust fungus puccinia psidii sensu lato was first detected in australia in april 2010. this study aimed to determine the host-range potential of this accession of the rust by testing its pathogenicity on plants of 122 taxa, representative of the 15 tribes of the subfamily myrtoideae in the family myrtaceae. each taxon was tested in two separate trials (unless indicated otherwise) that comprised up to five replicates per taxon and six replicates of a positive control (syzygium jambos). ... | 2012 | 22523596 |
| the antimosquito properties of extracts from flowering plants in south africa. | extracts of selected flowering plants, which are considered eco-friendly, are used for the treatment of numerous ailments and vector control worldwide. this has resulted in approximately 25 per cent of currently used drugs being derived from herbal sources. the aqueous and methanolic extracts of twelve plant species, psidium guajava (pink fruit), psidium guajava (white fruit), psidium cattleianum var. cattleianum, psidium guineense and psidium x durbanensis, achyranthes aspera, alternanthera ses ... | 2013 | 24522123 |
| indirect interactions between invasive and native plants via pollinators. | in generalised pollination systems, the presence of alien plant species may change the foraging behaviour of pollinators on native plant species, which could result in reduced reproductive success of native plant species. we tested this idea of indirect interactions on a small spatial and temporal scale in a field study in mauritius, where the invasive strawberry guava, psidium cattleianum, provides additional floral resources for insect pollinators. we predicted that the presence of flowering g ... | 2009 | 19050842 |
| proximate analysis, in vitro organic matter digestibility, and energy content of common guava (psidium guajava l.) and yellow, strawberry guava (psidium cattleianum var. lucidum) tree parts and fruits as potential forage. | the nutrient composition of common guava, psidium guajava l., and strawberry guava (waiwi), psidium cattleianum var. lucidum, tree parts and fruits was determined during three seasons for six locations in hawaii to assess guava as a potential feed for cattle. all guava plant parts were higher (p < 0.001) in crude protein than waiwi, but there were no differences in the fiber and energy densities for bark, shoots, and branches. guava leaves were higher in fiber and had lower energy densities (p < ... | 2012 | 23057786 |
| natural antimicrobials and oral microorganisms: a systematic review on herbal interventions for the eradication of multispecies oral biofilms. | oral diseases such as caries and periodontitis are mainly caused by microbial biofilms. antibiotic therapy has reached its limits with regard to antimicrobial resistance, and new therapeutic measures utilizing natural phytochemicals are currently a focus of research. hence, this systematic review provides a critical presentation of the antimicrobial effects of various medicinal herbs against in vitro, ex vivo, and in situ formed multispecies oral biofilms. searches were performed in three englis ... | 2015 | 26834707 |
| development of anastrepha fraterculus (diptera: tephritidae) related to the phenology of blueberry, blackberry, strawberry guava, and surinam cherry fruits. | anastrepha fraterculus (wiedemann, 1830) is the main pest of temperate climate orcharding. the study investigated the development of a. fraterculus related to phenological stage of blueberry, blackberry, strawberry guava, and surinam cherry trees. the phenological stages i (green fruits), ii (intermediate ripening stage of fruits), and iii (fruits close to harvesting) were determined, and they are from 8th, 10th, and 11th week; 6th, 8th, and 9th week; 8th, 13th, and 16th week; and 5th, 6th, and ... | 2015 | 26470120 |
| volatile host fruit odors as attractants for the oriental fruit fly (diptera: tephritidae). | we examined the responses of oriental fruit flies, bactrocera dorsalis hendel, to the odors of different stages and types of fruit presented on potted trees in a field cage. females were most attracted to odors of soft, ripe fruit. odors of common guava were more attractive to females than papaya and starfruit, and equally as attractive as strawberry guava, orange, and mango. in field tests, mcphail traps baited with mango, common guava, and orange captured equal numbers of females. traps baited ... | 2000 | 14658517 |
| biology and systematics of gall-inducing triozids (hemiptera: psylloidea) associated with psidium spp. (myrtaceae). | psidium myrtoides (myrtaceae) shelters the gall inducer nothotrioza myrtoidis gen. et sp. n. (hemiptera: psylloidea) which is described and illustrated here. nothotrioza belongs to the family triozidae and is probably most closely related to neolithus, a monotypic neotropical genus associated with sapiun (euphorbiaceae). three species are recognized within nothotrioza: the type species n. myrtoidis sp. n. associated with psidium myrtoides, n. cattleiani sp. n. (misidentified by butignol & pedros ... | 2013 | 26120700 |
| invasion by bactrocera dorsalis and niche partitioning among tephritid species in comoros. | ten economically important species belonging to the tephritidae have been recorded in union of the comoros (an island nation off the coast of east africa). little is known about the distribution of these species and how they are affected by climatic factors in the comoros archipelago. the main objectives of this study were to characterize: (i) the population dynamics of tephritid fruit flies in relation to season and host fruit availability and (ii) the geographic distribution of tephritids in r ... | 0 | 27312045 |
| antimicrobial and antioxidant activity of essential oil and different plant extracts of psidium cattleianum sabine. | the goals of the study were to determinethe antimicrobial and antioxidant activities of essential oil and plant extracts aqueous and ethanolic of psidium cattleianum sabine; the chemical composition of the essential oil of p. cattleianum; and the phytochemical screening of aqueous and ethanolic extracts of the same plant. regarding the antimicrobial activity, the ethanolic extract exhibited moderate antimicrobial activity with respect to bacteria k. pneumoniae and s. epidermidis, whereas, regard ... | 0 | 26871744 |
| antimicrobial activity of psidium cattleianum associated with calcium hydroxide against enterococcus faecalis and candida albicans: an in vitro study. | evaluate, in vitro, the antimicrobial activity of psidium cattleianum leaf extracts combined with calcium hydroxide against enterococcus faecalis and candida albicans biofilm. | 2018 | 29318387 |
| antimicrobial activity and biocompatibility of the psidium cattleianum extracts for endodontic purposes. | psidium cattleianum (pc) has been displaying inhibitory effect against a variety of microorganisms, but this effect has not yet been tested against endodontic pathogens. the aim of this study was to evaluate the antimicrobial activity and biocompatibility of the aqueous (pcae) and hydroethanolic (pche) extracts from psidium cattleianum (pc) leaves. minimum inhibitory concentration (mic) and minimum lethal concentration (mlc) were determined using the microdilution broth method in order to analyz ... | 2018 | 29297559 |
| antioxidant, antihyperglycemic, and antidyslipidemic effects of brazilian-native fruit extracts in an animal model of insulin resistance. | insulin resistance (ir) plays an important role in the development of many diseases, such as diabetes mellitus. therefore, the aim of the present study was to evaluate the effects of the extracts from fruits native to brazil on metabolic parameters and hepatic oxidative markers in an animal model of insulin resistance induced by dexamethasone (dex). | 2018 | 29088999 |
| calcium hydroxide associated with a new vehicle: psidium cattleianum leaf extracts. tissue response evaluation. | the aim of this study was to evaluate edemogenic activity and subcutaneous inflammatory reaction induced by psidium cattleianum leaf extracts associated with ca(oh)2. thirty male wistar rats, split equally into three groups [aqueous extract + ca(oh)2; ethanolic extract + ca(oh)2; and propylene glycol + ca(oh)2], were assessed every 3 h or 6 h (five animals in each period). under general anesthesia, 0.2 ml of 1% evans blue per 100 g of body weight was injected into the penile vein and each combin ... | 2017 | 28678965 |
| landscape-scale gpp and carbon density inform patterns and impacts of an invasive tree across wet forests of hawaii. | plant invasion typically occurs within a landscape-scale framework of abiotic and biotic conditions, often resulting in emergent feedbacks among environment, ecosystem functions, and the dominance of invasive species. understanding the mechanisms underlying successful invasions is an important component of conservation and management efforts, but this has been poorly investigated in a spatially explicit manner. knowing where and why invasion patterns change throughout the landscape enables manag ... | 2017 | 28135760 |
| regression models for estimating leaf area of seedlings and adult individuals of neotropical rainforest tree species. | individual leaf area (la) is a key variable in studies of tree ecophysiology because it directly influences light interception, photosynthesis and evapotranspiration of adult trees and seedlings. we analyzed the leaf dimensions (length - l and width - w) of seedlings and adults of seven neotropical rainforest tree species (brosimum rubescens, manilkara maxima, pouteria caimito, pouteria torta, psidium cattleyanum, symphonia globulifera and tabebuia stenocalyx) with the objective to test the feas ... | 2017 | 27191468 |
| antioxidant capacity and bioactive compounds of four brazilian native fruits. | the purpose of this study was to evaluate the bioactive compounds and antioxidant activity of extracts from araçá (psidium cattleianum), butiá (butia eriospatha), and pitanga (eugenia uniflora) fruits with different flesh colors (i.e., purple, red, and orange), and blackberries (rubus sp.; cv. xavante and cherokee) collected in the southern region of brazil. the content of ascorbic acid, total carotenoids, and phenolics were determined. the profile of the phenolic compounds was assessed by high- ... | 2015 | 28911695 |
| gradients of metabolite accumulation and redifferentiation of nutritive cells associated with vascular tissues in galls induced by sucking insects. | plant cells respond to abiotic and biotic stimuli, which generate adaptive phenotypes in plant organs. in the case of plant galls, cell phenotypes are adaptive for the gall inducer and assume characteristics mainly linked to its protection and nutrition. herein, the cytological development and histochemical profile of nothotrioza cattleiani galls, a sucking insect, on the leaves of psidium cattleianum are compared with those of other galls, especially n. myrtoidis galls, searching for conserved ... | 2015 | 26209687 |
| could the extended phenotype extend to the cellular and subcellular levels in insect-induced galls? | neo-ontogenesis of plant galls involves redifferentiation of host plant tissues to express new phenotypes, when new cell properties are established via structural-functional remodeling. herein, psidium cattleianum leaves and nothotrioza cattleiani galls are analyzed by developmental anatomy, cytometry and immunocytochemistry of cell walls. we address hypothesis-driven questions concerning the organogenesis of globoid galls in the association of p. cattleianum-n. cattleianum, and p. myrtoides-n. ... | 2015 | 26053863 |
| essential oil of psidium cattleianum leaves: antioxidant and antifungal activity. | psidium cattleianum sabine (myrtacea) is rich in vitamin c and phenolic compounds, including epicatechin and gallic acid as the main components. | 2015 | 25420516 |
| psidium cattleianum fruit extracts are efficient in vitro scavengers of physiologically relevant reactive oxygen and nitrogen species. | psidium cattleianum, an unexploited brazilian native fruit, is considered a potential source of bioactive compounds. in the present study, the in vitro scavenging capacity of skin and pulp extracts from p. cattleianum fruits against reactive oxygen species (ros) and reactive nitrogen species (rns) was evaluated by in vitro screening assays. additionally, the composition of phenolic compounds and carotenoids in both extracts was determined by lc-ms/ms. the major phenolic compounds identified and ... | 2014 | 25038660 |
| comparative analysis of aroma compounds and sensorial features of strawberry and lemon guavas (psidium cattleianum sabine). | the aroma of strawberry and lemon guava fruits (psidium cattleianum sabine) was studied by sensory analysis, gas chromatography-olfactometry (gc-o) and quantitative analysis. volatiles released from the pulps were collected in a trapping system consisting of lichrolut en resins and eluted with dichloromethane/methanol. in total, 23 odour zones were detected by gc-o, of which 16 were found in the extract from the strawberry guava pulp and 17 in the extract from the lemon guava pulp. among the com ... | 2014 | 24996334 |
| in vivo analgesic activity, toxicity and phytochemical screening of the hydroalcoholic extract from the leaves of psidium cattleianum sabine. | psidium cattleianum sabine is extensively used in brazilian traditional medicine to treat several diseases including painful disorders. aim of the study to investigate the toxicity and the possible analgesic activities of the hydroalcoholic extract from the leaves of psidium cattleianum sabine (elpcs), to support its use in folk medicine. to screen the major phytochemical constituents of this extract and evaluate their antioxidant activity. | 2013 | 24021301 |
| acaricidal activities of β-caryophyllene oxide and structural analogues derived from psidium cattleianum oil against house dust mites. | this study was to evaluate the acaricidal activities of an active compound isolated from psidium cattleianum and structural analogues against dermatophagoides farinae and d. pteronyssinus. β-caryophyllene oxide was isolated using chromatographic techniques. | 2014 | 23861316 |
| conservation implications of changes in endemic hawaiian drosophilidae diversity across land use gradients. | endemic hawaiian drosophilidae, a radiation of nearly 1000 species including 13 federally listed as endangered, occur mostly in intact native forest, 500-1500 m above sea level. but their persistence in disturbed forest and agricultural areas has not been documented. thus, control efforts for agricultural pests may impact endemic species if previously undocumented refugia in agricultural areas may play a role in their conservation. to quantify whether invasive plants and agriculture habitats may ... | 2013 | 23650514 |
| hypolipidemic effect of fruit fibers in rats fed with high dietary fat. | the hypolipidemic effect of 10% fruit fibers in rats fed with high-fat diet (hfd) was evaluated. this study was conducted on a total of 50 male albino rats divided into 10 equal groups fed with different types of dietary fruits. the feeding period lasted for 24 weeks. fasting blood samples were collected and sera separated and subjected to lipid profile assay and atherogenic index. in addition, total antioxidant activity of different fruits was determined. the results obtained showed that pomegr ... | 2015 | 23315090 |
| nutritional and nutraceutical comparison of jamaican psidium cattleianum (strawberry guava) and psidium guajava (common guava) fruits. | psidium cattleianum (strawberry guava) is one of many underutilised edible fruits that grow wild in jamaica, and could potentially be commercially exploited to yield health and economic benefits. in this study, the total phenolics, proximate contents, and antioxidant, anti-inflammatory, and antimicrobial activities of p. cattleianum and p. guajava (common guava), a well-known species, were compared. strawberry guavas were found to be superior to common guavas in antioxidant and antimicrobial act ... | 2012 | 23107729 |
| comparative analysis of the chemical composition and antioxidant activity of red (psidium cattleianum) and yellow (psidium cattleianum var. lucidum) strawberry guava fruit. | strawberry guava (psidium cattleianum sabine) is a native fruit of brazil widely consumed fresh and used in the food industry. in this context, the present study deals with the chemical characterization and the antioxidant activity of the red (psidium cattleianum) and yellow (p. cattleianum var. lucidum hort.) strawberry guava fruits, cultivars irapuã and ya-cy, respectively. knowledge of chemical composition is fundamental to human nutrition, contributing to the quality of foods. phenolic compo ... | 2011 | 22417549 |
| characterization and antioxidant potential of brazilian fruits from the myrtaceae family. | the objective of this study is to evaluating the brazilian biodiversity through physicochemical characterization and determination of antioxidant potential of three species from the myrtaceae family, namely yellow guava (psidium cattleyanum sabine), guabiroba (campomanesia xanthocarpa o. berg), and uvaia ( eugenia pyriformis cambess). guabiroba had the greater quantity of phenolic compounds (9033 mg chlorogenic acid/100 g) and vitamin c (30.58 mg/g) and showed the best tss/tta (total soluble sol ... | 2012 | 22397467 |
| effect of psidium cattleianum leaf extract on enamel demineralisation and dental biofilm composition in situ. | previous evaluations of psidium cattleianum leaf extract were not done in conditions similar to the oral environment. the aim of this study was to evaluate the effect of p. cattleianum leaf extract on enamel demineralisation, extracellular polysaccharide formation, and the microbial composition of dental biofilms formed in situ. | 2012 | 22386130 |
| the butanol fraction of guava (psidium cattleianum sabine) leaf extract suppresses mmp-2 and mmp-9 expression and activity through the suppression of the erk1/2 mapk signaling pathway. | the leaf extract of guava (psidium cattleianum sabine) has traditionally been used for the treatment of diarrhea and diabetes in east asia and other countries. recently, the leaf extract has been employed in the therapy of cancer, bacterial infections, and inflammation in experimental models. however, the exact mechanisms of how guava leaf extract inhibits tumor metastasis and invasion are still unknown. in the present study, we investigated in detail the molecular mechanism(s) responsible for t ... | 2012 | 22211962 |
| assessment of molluscicidal activity of essential oils from five azorean plants against radix peregra (müller, 1774). | the molluscicidal activity of essential oils from two endemic (juniperus brevifolia; laurus azorica) and three introduced (hedychium gardnerianum; pittosporum undulatum; psidium cattleianum) azorean plants against the snail radix peregra was studied under laboratory conditions. essential oils from leaves of h. gardnerianum, l. azorica and j.brevifolia presented promising molluscicidal activity on both adults and juveniles stages of r. peregra. the molluscicidal activity of these essential oils w ... | 2012 | 22154003 |
| antioxidant potential and radical-scavenging effects of flavonoids from the leaves of psidium cattleianum grown in french polynesia. | psidium cattleianum j. sabine (myrtaceae) is a traditional medicinal plant in french polynesia. the leaves and roots possess many medicinal properties. these effects may be correlated with the presence of antioxidant compounds. seven flavonoids along with a benzoic acid were isolated from the leaves of p. cattleianum. the compounds indicated strong antioxidant and radical-scavenging activities in alp, dpph(·), abts(·-) and orac assays. this study demonstrates that the leaves of p. cattleianum po ... | 2012 | 22077157 |
| response to dehydration and irrigation in invasive and native saplings: osmotic adjustment versus leaf shedding. | to clarify the mechanism underlying successful invasion by tree species into xeric sites on japan's bonin islands, we compared the water use of an alien species, psidium cattleianum, which is rapidly expanding on ridge sites with shallow soil, with that of a native species, trema orientalis. we hypothesized that there is a trade-off between leaf shedding with low cavitation resistance (frequent xylem cavitation plus refilling ability) and leaf osmotic adjustment with high cavitation resistance ( ... | 2010 | 20368340 |
| a stochastic flowering model describing an asynchronically flowering set of trees. | a general stochastic model is presented that simulates the time course of flowering of individual trees and populations, integrating the synchronization of flowering both between and within trees. making some hypotheses, a simplified expression of the model, called the 'shoot' model, is proposed, in which the synchronization of flowering both between and within trees is characterized by specific parameters. two derived models, the 'tree' model and the 'population' model, are presented. they negl ... | 2002 | 12234153 |
| characterization of volatiles in strawberry guava (psidium cattleianum sabine) fruit. | volatile compounds were isolated from strawberry guava fruit by simultaneous steam distillation-solvent extraction according to likens-nickerson. compounds were identified by capillary gc-ms and sensorially characterized by sniffing gc. two hundred and four compounds were identified in the aroma concentrate, of which ethanol, alpha-pinene, (z)-3-hexenol, (e)-beta-caryophyllene, and hexadecanoic acid were found to be the major constituents. the presence of many aliphatic esters and terpenic compo ... | 2001 | 11743779 |