| antimicrobial and antioxidant activities of feijoa sellowiana fruit. | the present study was designed to evaluate the antibacterial and antioxidant activities of an aqueous extract from the tropical feijoa sellowiana berg. fruit which is widely used for human food. the extract was tested against gram-positive and gram-negative bacteria by a broth dilution test and on human whole blood leukocytes, as well as isolated neutrophils using a chemiluminescence (cl) assay. the extract inhibited bacterial growth; pseudomonas aeruginosa, enterobacter aerogenes and enterobact ... | 2000 | 10724024 |
| immunopharmacological properties of flavonoids. | the flavonoids are a heterogeneous group of ubiquitous plant polyphenols that abound in the human diet and are endowed with several biological activities, including immunomodulating and antioxidant activities. the bioactivity of flavonoids is tightly correlated with their chemical structure and action mechanisms, mostly inhibitory, on enzymatic systems involved in cellular activation. the aim of this study was to evaluate the effects of acetonic extracts from lunularia cruciata gametophytes and ... | 2000 | 10930720 |
| feijoa sellowiana derived natural flavone exerts anti-cancer action displaying hdac inhibitory activities. | curative properties of some medicinal plants such as the feijoa sellowiana bert. (myrtaceae), have been often claimed, although the corresponding molecular mechanism(s) remain elusive. we report here that the feijoa acetonic extract exerts anti-cancer activities on solid and hematological cancer cells. feijoa extract did not show toxic effects on normal myeloid progenitors thus displaying a tumor-selective activity. in the feijoa acetonic extract, fractionation and subsequent purification and an ... | 2007 | 17604209 |
| bone mineralization enhancing activity of a methoxyellagic acid glucoside from a feijoa sellowiana leaf extract. | the capability of an aqueous methanol extract obtained from the leaves of feijoa sellowiana berg. on possible prevention and treatment of osteoporosis has been examined by evaluating its stimulating effect on the two human osteoblastic cell lines hos58 and saos-2. the extract was found to increase significantly the mineralization of cultivated human bone cell, whereby a clear increment (15.3 +/- 2.7%) in von kossa positive area was determined when administering 25 microg/ml leaf extract. a phyto ... | 2009 | 19320288 |
| antibacterial and antifungal properties of acetonic extract of feijoa sellowiana fruits and its effect on helicobacter pylori growth. | feijoa sellowiana berg. fruit, widely used for human consumption, is well appreciated for its good nutritional characteristics and for its pleasant flavor and aroma. in a prior study we showed that the acetonic extract of f. sellowiana fruit exerts a potent antibacterial activity against some gram-positive and gram-negative bacterial strains. to confirm and deepen the study on antimicrobial activities of the fruit, in this article we analyze the same extract for its effectiveness against differe ... | 2010 | 20136454 |
| The effects of Feijoa sellowiana fruits on the antioxidant defense system, lipid peroxidation, and tissue morphology in rats. | Context: The fruits of Feijoa sellowiana Berg. (Myrtaceae) have been used to treat goiter in traditional Turkish medicine. Objective: To evaluate the in vivo antioxidant activities of different polarities of the fruit extracts in blood and tissue (liver, kidney, brain, and heart) antioxidant defense systems in standard pellet diet and in high fat diet consumed, male rats were assessed. Materials and methods: The extracts (methanol, n-hexane, chloroform, ethyl acetate, n-butanol, and aqueous) ... | 2011 | 22133107 |
| reversal of fluconazole resistance induced by a synergistic effect with acca sellowiana in candida glabrata strains. | the increased incidence of non-albicans candida (nac) resistant to fluconazole (flz) makes it necessary to use new therapeutic alternatives. acca sellowiana (o.berg) burret (myrtaceae) is a guava with several proven biological activities. the interaction with fluconazole can be a feasible alternative to overcome this resistance. | 2016 | 27050162 |
| 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 |
| antibacterial activity in actinidia chinensis, feijoa sellowiana and aberia caffra. | the antibacterial activity of extracts from various parts of plants (leaves, fruits and stems) was studied in actinidia chinensis, feijoa sellowiana and aberia caffra. these are tropical plants used for food. the fruits (subdivided into skin, pulp and seeds), leaves and stems were separately extracted and tested, in triplicate, against eight gram positive and gram negative bacterial strains. all the extracts, except from the leaves of a. caffra, showed activity against all the strains employed. ... | 1997 | 18611802 |
| phylogenomic relationship of feijoa (acca sellowiana (o.berg) burret) with other myrtaceae based on complete chloroplast genome sequences. | given their distribution, importance, and richness, myrtaceae species comprise a model system for studying the evolution of tropical plant diversity. in addition, chloroplast (cp) genome sequencing is an efficient tool for phylogenetic relationship studies. feijoa [acca sellowiana (o. berg) burret; cn: pineapple-guava] is a myrtaceae species that occurs naturally in southern brazil and northern uruguay. feijoa is known for its exquisite perfume and flavorful fruits, pharmacological properties, o ... | 2017 | 28185042 |
| isolation and characterization of microsatellite markers in acca sellowiana (berg) burret. | acca sellowiana has commercial potential because of the quality and the unique flavor of its fruit. conservation of natural populations and management of breeding programmes would benefit from the availability of molecular markers that could be used to characterize levels and distribution of genetic variability. thus, 13 microsatellite markers were developed from an enriched genomic library of a. sellowiana. they were characterized using 40 samples. the expected and observed heterozygosities ran ... | 2008 | 21586063 |
| three new flavonoids, proanthocyanidin, and accompanying phenolic constituents from feijoa sellowiana. | our investigation of phenolic constituents of fruits, flower buds, and leaves of feijoa sellowiana led to the isolation of twenty-one phenolics including three new gossypetin glycosides 1-3, and also the purification of a proanthocyanidin fraction. a high-performance liquid chromatography method for simultaneous analysis of phenolic constituents was established and then used to investigate the phenolic profiles of the parts of the plant species, to show the presence of characteristic flavonoids ... | 2018 | 29297255 |
| in vitro inhibitory activity of acca sellowiana fruit extract on end products of advanced glycation. | hyperglycemia plays an important role in the pathogenesis of diabetic complications, as it increases protein glycation, as well as the progressive accumulation of advanced glycation end products (ages), which are complex structures that produce fluorescence. the glycation reaction raises the levels of protein carbonyl, n ε-(carboxymethyl)lysine (cml), and fructosamine and decreases the level of thiol groups. | 2017 | 29168124 |
| complete sequence and comparative analysis of the chloroplast genome of plinia trunciflora. | plinia trunciflora is a brazilian native fruit tree from the myrtaceae family, also known as jaboticaba. this species has great potential by its fruit production. due to the high content of essential oils in their leaves and of anthocyanins in the fruits, there is also an increasing interest by the pharmaceutical industry. nevertheless, there are few studies focusing on its molecular biology and genetic characterization. we herein report the complete chloroplast (cp) genome of p. trunciflora usi ... | 2017 | 29111566 |
| acetonic extract from the feijoa sellowiana berg. fruit exerts antioxidant properties and modulates disaccharidases activities in human intestinal epithelial cells. | feijoa sellowiana fruit has been shown to possess various biological activities, such as anti-bacterial and anti-cancer properties, in a variety of cellular models, but its activity on human intestinal epithelial cells has never been tested. the purpose of this study was to investigate the effects of the acetonic extract of f. sellowiana fruits on the viability, membrane peroxidation, disaccharidases activities and proliferation of in vitro models of human intestinal epithelial cells. to obtain ... | 2016 | 27166598 |
| antidepressant activities of feijoa sellowiana fruit. | many pharmacological activities have been reported for feijoa sellowiana. the aim of present study was to investigate antidepressant activities of its leaf and fruit extracts. | 2015 | 26214790 |
| correlation between sun protection factor and antioxidant activity, phenol and flavonoid contents of some medicinal plants. | long exposure of uv radiation increases risk of skin diseases such as cancer and photoallergic reactions. uv-b (280-320 nm) radiation is mainly responsible for inducing the skin problems. skin protection is a suitable method against ultraviolet radiation-induced damage. various synthetic agents have been used as photo protective but because of their potential toxicity in humans, they have limited usage. natural substances have been recently considered as potential sunscreen resources due to thei ... | 2014 | 25276206 |
| characterization of 10 new nuclear microsatellite markers in acca sellowiana (myrtaceae). | | 2014 | 25202632 |
| nephroprotective effects of feijoa sellowiana leaves extract on renal injury induced by acute dose of ecstasy (mdma) in mice. | because of the high total phenolic contents of feijoa sellowiana, its nephroprotective effect was determined in 3,4-methylene dioxymethamphetamine (mdma) treated mice. | 2014 | 24592310 |
| feijoa sellowiana berg fruit juice: anti-inflammatory effect and activity on superoxide anion generation. | feijoa sellowiana berg var. coolidge fruit juice was studied in vivo for the anti-inflammatory activity by carrageenin-induced paw edema test and in vitro for the effects on superoxide anion release from neutrophils in human whole blood. the fruit juice was analyzed by the high-performance liquid chromatography method, and quercetin, ellagic acid, catechin, rutin, eriodictyol, gallic acid, pyrocatechol, syringic acid, and eriocitrin were identified. the results showed a significant anti-inflamma ... | 2014 | 24433073 |
| study of the hepatoprotective activity of methanolic extract of feijoa sellowiana fruits against mdma using the isolated rat liver perfusion system. | liver injury induced by viruses, chemicals and drugs can be protected by different medicinal plants. feijoa sellowiana (myrtaceae) is an evergreen bush native to southern areas of south america, as well as iran where the fruits are very popular. feijoa has shown a potent antimicrobial effect. morever, the antioxidant activity of total feijoa extract has also been reported. mdma or ecstasy is a ring-substituted amphetamine derivative which has been abused as a widespread recreational drug by the ... | 2013 | 24250575 |
| comparative proteomic analysis of off-type and normal phenotype somatic plantlets derived from somatic embryos of feijoa (acca sellowiana (o. berg) burret). | morphological disorders in a relevant portion of emerged somatic embryos have been a limiting factor in the true-to-type plantlet formation in acca sellowiana. in this sense, the present study undertook a comparison between normal phenotype and off-type somatic plantlets protein profiles by means of the 2-d dige proteomics approach. off-type and normal phenotype somatic plantlets obtained at 10 and 20 days conversion were evaluated. results indicated 12 exclusive spots between normal and off-typ ... | 2013 | 23849129 |
| sensory characteristics of antioxidant extracts from uruguayan native plants: influence of deodorization by steam distillation. | polyphenolic-rich antioxidant extracts from native plants have potential applications as ingredients in functional foods; however, their intense characteristic flavour is a major limitation to their application. in this context, the aim of the present work was to evaluate the influence of steam distillation on the sensory and physicochemical characteristics of extracts of five native uruguayan plants (acca sellowiana, achyrocline satureioides, aloysia gratisima, baccharis trimera and mikania gua ... | 2013 | 23733811 |
| micropropagation systems of feijoa (acca sellowiana (o. berg) burret). | acca sellowiana (o. berg) burret sin. feijoa sellowiana (myrtaceae) is a semiwoody fruit species native to south brazil, uruguay, and argentina; edible fruits are tasty. the naturally occurring populations in santa catarina state show high variability in fruit size, color, and other features. a breeding program launched in 1990 resulted in the release of four brazilian commercial varieties. the conventional clonal propagation methods of this species, such as cutting and grafting, have shown low ... | 2013 | 23179689 |
| reappraisal and neotypification of phyllachora feijoae. | acca sellowiana (myrtaceae), feijoa (in brazil, goiaba da serra), is a native southern south america tree that produces edible fruits which, although only occasionally cultivated in south america, became a significant fruit crop in new zealand. recently, during surveys for fungal pathogens of feijoa in southern brazil, several plants were found bearing tar-spot symptoms caused by a species of phyllachora. a literature search enabled us to identify the fungus as phyllachora feijoae, a little-know ... | 2012 | 23155496 |
| 5-azacytidine combined with 2,4-d improves somatic embryogenesis of acca sellowiana (o. berg) burret by means of changes in global dna methylation levels. | dna methylation is an epigenetic regulatory mechanism of gene expression which can be associated with developmental phases and in vitro morphogenetic competence in plants. the present work evaluated the effects of 5-azacytidine (azac) and 2,4-dichlorophenoxyacetic acid (2,4-d) on acca sellowiana somatic embryogenesis (se) and global dna methylation levels by high-performance liquid chromatography mass spectrometry (hplc/ms/ms). 2,4-d-free treatments revealed no somatic embryo formation in both a ... | 2012 | 22865112 |
| characterization of somatic embryo attached structures in feijoa sellowiana berg. (myrtaceae). | the presence of an attached organ to somatic embryos of angiosperms connecting the embryo to the supporting tissue has been a subject of controversy. this study shows that 67% of the morphologically normal somatic embryos of feijoa sellowiana possess this type of organ and that its formation was not affected by culture media composition. histological and ultrastructural analysis indicated that the attached structures of somatic embryos displayed a great morphological diversity ranging from a few ... | 2010 | 20336358 |
| effect and analysis of phenolic compounds during somatic embryogenesis induction in feijoa sellowiana berg. | the effect of phenolic compounds on somatic embryogenesis in feijoa sellowiana was analysed. the results showed that caffeic acid (140-560 microm) significantly increased somatic embryogenesis induction compared with the control. the presence of phloridzin, even at lower concentrations (11.5 microm), or caffeic acid or phloroglucinol at concentrations greater than 140.0 and 197.5 microm, respectively, inhibited somatic embryo development beyond the globular stage. when somatic embryos were trans ... | 2008 | 18767216 |
| isolation and characterization of microsatellite markers in acca sellowiana (berg) burret. | acca sellowiana has commercial potential due to the quality and the unique flavor of its fruit. conservation of natural populations and management of breeding programmes would benefit from the availability of molecular markers that could be used to characterize levels and distribution of genetic variability. thus, 13 microsatellite markers were developed from an enriched genomic library of a. sellowiana. they were characterized using 40 samples. the expected and observed heterozygosities ranged ... | 2008 | 21585953 |
| inhibition of inducible nitric oxide synthase expression by an acetonic extract from feijoa sellowiana berg. fruits. | feijoa sellowiana berg. fruits and especially the acetonic extract have been shown to possess biological activities, although the responsible compounds have never been identified. the present study was designed to evaluate the anti-inflammatory activity of an acetonic extract from f. sellowiana berg. fruits on the nitric oxide (no) pathway, which plays an important role in inflammation. to this aim the j774 cell line, which expresses inducible nitric oxide synthase (inos) following stimulation w ... | 2007 | 17550270 |
| morphohistological analysis and histochemistry of feijoa sellowiana somatic embryogenesis. | morphohistological analysis and histochemical studies were carried out during the induction and development of feijoa sellowiana somatic embryos. zygotic embryos were cultured on lpm medium containing 2,4-dichlorophenoxyacetic acid (20 microm) and glutamine (8 mm). somatic embryogenesis could be induced from embryogenic cells that originated in meristematic centers or from clusters of cells. the presence of few starch grains and abundant protein bodies was observed in the globular and early torp ... | 2004 | 15726807 |
| secondary metabolites from the leaves of feijoa sellowiana berg. | the investigation of the lipid extract of leaves of feijoa sellowiana cultivated along the east coast of sicily has yielded in addition to the widespread secondary metabolites: alpha-tocopherol, flavone, stigmasterol and beta-carotene, an inseparable mixture of tyrosol esters of lignoceric (1a), cerotic (1b) and montanic (1c) acids, and a novel galactolipid identified as (2s)-1,2,6'-tri-o-[(9z,12z,15z)-octadeca-9,12,15-trienoyl]-3-o-beta-d-galactopyranosyl glycerol (2). | 2004 | 15501265 |
| induction of pollen callus in anther cultures of feijoa sellowiana berg. (myrtaceae). | anthers of feijoa sellowiana berg. (feijoa) produced pollen callus when cultured in murashige and skoog medium containing 2,4-dichlorophenoxyacetic acid and benzyladenine or in nurse cultures. somatic callus was also formed in large amounts from the connective and from the cut end of the filament. anthers containing microspores at the stage immediately prior to the first pollen mitosis cultured in the presence of 3% sucrose, presented the highest frequencies of induction. androgenetic divisions ... | 1993 | 24196182 |
| [sucfejsel--the juice of the fruits of feijoa sellowiana berg--in the therapy of thyrotoxicosis]. | | 1965 | 14308540 |