Psidium
Piper betle
Ebenaceae
Plant Extracts
A stochastic flowering model describing an asynchronically flowering set of trees. (1/49)
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 neglect the asynchrony of flowering, respectively, within trees, and between and within trees. Models were fitted and tested using data on flowering of Psidium cattleianum observed at study sites at elevations of 200, 520 and 890 m in Reunion Island. The 'shoot' model fitted the data best and reproduced the strong irregularities in flowering shown by empirical data. The asynchrony of flowering in P. cattleianum was more pronounced within than between trees. Simulations showed that various flowering patterns can be reproduced by the 'shoot' model. The use of different levels of organization of the general model is discussed. (+info)Isolation of antimicrobial compounds from guava (Psidium guajava L.) and their structural elucidation. (2/49)
Four antibacterial compounds were isolated from leaves of guava (Psidium guajava L.), and the structures of these compounds were established on the basis of chemical and spectroscopic evidence. Two new flavonoid glycosides, morin-3-O-alpha-L-lyxopyranoside and morin-3-O-alpha-L-arabopyranoside, and two known flavonoids, guaijavarin and quercetin, were identified. The minimum inhibition concentration of morin-3-O-alpha-L-lyxopyranoside and morin-3-O-alpha-L-arabopyranoside was 200 microg/ml for each against Salmonella enteritidis, and 250 microg/ml and 300 microg/ml against Bacillus cereus, respectively. (+info)Inotropic effects of extracts of Psidium guajava L. (guava) leaves on the guinea pig atrium. (3/49)
Many pharmacological effects have been ascribed to extracts of Psidium guajava L. (guava) leaves. However, in spite of its widespread use in Brazilian folk medicine and a reasonable number of scientific reports about it, we could not find any study dealing with its action on the mammalian myocardium. In the present study, by measuring isometric force, we observed that the crude extract of P. guajava (water-alcohol extract obtained by macerating dry leaves) depresses the guinea pig atrial contractility in a concentration-dependent fashion (N = 8 hearts, 15 trials). The compound with cardiac activity was concentrated by extraction in a Soxhlet apparatus using 17 M glacial acetic acid after removing the less polar fractions (hexane, chloroform, acetone, ethanol and methanol), suggesting that this compound is a highly polar substance. In the isolated guinea pig left atrium the acetic acid fraction (10-800 mg/l) of P. guajava 1) reversibly decreased myocardial force in a concentration-dependent fashion (EC50 = 0.07g/l, N = 5 hearts, 9 trials, P<0.05), 2) increased the atrial relaxation time measured at 20% of the force amplitude up to 35% (91 +/- 15 to 123 +/- 30 ms, N = 3 hearts, 6 trials, P<0.05), 3) abolished the positive staircase effect (Bowditch phenomenon) in a concentration-dependent fashion suggesting a decrease of the cellular inward calcium current (N = 4 hearts, 8 trials, P<0.05), and 4) its inotropic effect was abolished by cholinergic receptor blockade with 1.5 mM atropine sulfate, indicating a cholinergic involvement in the mechanism of action of the extract (N = 7 hearts, 15 trials, P<0.05). The acetic acid extract was 20 times more potent than crude extract (EC50 = 1.4 g/l). The results showed that extracts from P. guajava leaves depress myocardial inotropism. (+info)Comparison of cross inoculation potential of South African avocado and mango isolates of Colletotrichum gloeosporioides. (4/49)
Three hundred and eighteen Colletotrichum gloeosporioides isolates from stem-end rot and anthracnose infected avocados as well as from stem-end rot/anthracnose and soft brown rot on mango, were compared using fruit inoculations. Isolates could be categorised according to lesion size and both avocado and mango isolates produced larger lesions when inoculated on their own hosts. Cross-inoculation potential of these isolates was also compared on strawberries, peppers, guavas, papayas and citrus. All isolates produced lesions on all hosts except citrus. Factors such as area of origin and symptom type from which original isolations were made, could not be correlated with lesion development on these hosts. (+info)Detection of an enol intermediate in the hydroperoxide lyase chain cleavage reaction. (5/49)
Guava (Psidium guajava) hydroperoxide lyase (HPL) preparations were incubated with [1-(14)C](9Z,11E,13S,15Z)-13-hydroperoxy-9,11,15-octadecatrienoic acid for 1 min at 0 degrees C, followed by rapid extraction/trimethylsilylation. Analysis of the trimethylsilylated products by gas chromatography-mass spectrometry and radio-high-performance liquid chromatography revealed a single predominant (14)C-labelled compound, identified by its (1)H-nuclear magnetic resonance, ultraviolet and mass spectra as the trimethylsilyl ether/ester of (9Z,11E)-12-hydroxy-9,11-dodecadienoic acid. Longer time incubations afford smaller yield of this enol due to its partial tautomerization into (9Z)-12-oxo-9-dodecenoic acid. The data obtained demonstrate that formation of (9Z)-12-oxo-9-dodecenoic acid in the HPL reaction is preceded by unstable enol oxylipin, and further suggest that hemiacetals are the true products of HPL catalysis. (+info)The "heterolytic hydroperoxide lyase" is an isomerase producing a short-lived fatty acid hemiacetal. (6/49)
To elucidate the reaction mechanism of hydroperoxide lyase (HPL), the enzyme from guava (Psidium guajava) fruits, was incubated for 10-60 s at 0 degrees C with 13-HPOT. The products were rapidly extracted and derivatized by trimethylsilylation. Two trapping products, namely the trimethylsilyl ether/ester derivatives of the hemiacetal 12-(1'-hydroxy-3'-hexenyloxy)-9,11-dodecadienoic acid and the enol (9Z,11E)-12-hydroxy-9,11-dodecadienoic acid, were detected by gas chromatography-mass spectrometry (GC-MS) analyses. The structural assignments were supported by mass spectra recorded for (a) hydrogenated products; (b) products biosynthesized from [9,10,12,13,15,16] 13-HPOT or [(18)O(2)]13-HPOT; (c) chemically prepared reference compounds. Kinetic experiments showed that the hemiacetal and enol were both unstable and transiently appearing compounds (half-lives, ca. 20 s and 2 min, respectively). Hemiacetal and enol biosynthesized from [(18)O(2)]13-HPOT retained two and one (18)O atoms, respectively, whereas no (18)O was incorporated from [(18)O]water. The data demonstrated that: (1) the true enzymatic product formed from 13-HPOT in the presence of HPL is a short-lived hemiacetal; (2) the hemiacetal spontaneously dissociates into (3Z)-hexenal and the unstable enol form of (9Z)-12-oxo-9-dodecenoic acid; (3) the enzymatic isomerization of 13-HPOT into the hemiacetal occurs homolytically. (+info)Microwave-assisted extraction of quercetin and acid degradation of its glycosides in Psidium guajava leaves. (7/49)
Microwave-assisted extraction (MAE) and microwave-assisted hydrolysis (MAAH) were developed for the sample preparation of guava leaves prior to GC determination of quercetin and its glycosides. Ethanol was selected as the solvent. The optimum MAE temperature, particle size, solvent volume and MAE time are 120 degrees C, 40 - 60 mesh, 20 mL and 5 min, respectively; the optimum MAAH temperature and time, HCl concentration, solvent are 100 degrees C, 5 min, 1.2 mol L(-1) HCl and ethanol, respectively. (+info)Anti-allergic Psidium guajava extracts exert an antitumor effect by inhibition of T regulatory cells and resultant augmentation of Th1 cells. (8/49)
Th1 polarization is one of the mechanisms underlying the therapeutic effects of herbal medicine. The action of anti-allergic agents from Psidium guajava (P. guajava) on T cell immunity in mice was investigated. The addition of P. guajava extracts blocked IL-10-mediated, in vitro induction of T regulatory (Tr) cells from CD4+ splenocytes of C57BL/6 mice, whereas the extracts exerted only a weak or no effect on the development of Th1 and Th2 cells. Accordingly, Tr cells were not induced from splenocytes of mice administered orally with the extracts. Furthermore, P. guajava extracts shifted the Th1/Th2 balance to a Th1 dominant status by directly attenuating Tr cell activity. In a study of tumor immunity, mice pretreated with the extracts exhibited retarded growth of s.c. inoculated B16 melanoma cells. These findings suggest that P. guajava extracts are efficacious for the prevention of tumor development by depressing Tr cells and subsequently shifting to Th1 cells. (+info)"Psidium" is a scientific name for a genus of plants that include several species of tropical trees and shrubs, the most well-known of which is "Psidium guajava," or the common guava. These plants are native to Central and South America and are now grown in many tropical and subtropical regions around the world.
The fruits of these plants are also commonly referred to as "guavas" and are popular for their sweet, tangy flavor and high nutritional content. They are rich in vitamin C, dietary fiber, and antioxidants, making them a valuable addition to a healthy diet.
In medical or scientific contexts, the term "Psidium" may be used to refer specifically to the genus of plants or more broadly to any plant or fruit within that genus.
'Piper betle' is not a medical term, but a botanical name for a plant also known as the betel vine or betel pepper. It is commonly found in Southeast Asian countries and is used in various traditional medicinal practices. The leaves of this plant are often chewed along with other substances like tobacco and slaked lime for their mild stimulant and psychoactive effects.
In a medical context, 'Piper betle' may be mentioned in relation to its potential pharmacological properties or possible health benefits/risks associated with its use. However, it is not considered a standard medical treatment or therapy.
Ebenaceae is a family of flowering plants that includes approximately 700 species, distributed across 5-6 genera. It is a widely distributed family, found in tropical and subtropical regions around the world. The family includes several economically important trees, such as those in the genus Diospyros, which includes persimmons and ebony.
Ebony trees are particularly known for their hard, dense, and dark-colored wood, which has been used for centuries to make high-quality furniture, musical instruments, and other decorative items. The wood is so dense that it sinks in water, and it has a fine texture with a smooth finish.
Ebenaceae family members are characterized by their opposite leaves, small flowers with four or five petals, and fleshy fruits. Some species have medicinal properties, and have been used in traditional medicine to treat various ailments, such as diarrhea, fever, and skin diseases. However, it is important to note that the safety and efficacy of these treatments have not been thoroughly studied or proven by scientific research.
A plant extract is a preparation containing chemical constituents that have been extracted from a plant using a solvent. The resulting extract may contain a single compound or a mixture of several compounds, depending on the extraction process and the specific plant material used. These extracts are often used in various industries including pharmaceuticals, nutraceuticals, cosmetics, and food and beverage, due to their potential therapeutic or beneficial properties. The composition of plant extracts can vary widely, and it is important to ensure their quality, safety, and efficacy before use in any application.
"Bidens" is a genus of flowering plants in the family Asteraceae, also known as the daisy or composite family. The name "Bidens" comes from the Latin words "bi," meaning two, and "dens," meaning teeth, referring to the characteristic pair of pointed bracts at the base of each flower. These plants are often called "beggar's ticks" or "stickseeds" because the small, barbed seeds cling to fur, feathers, and clothing, aiding in their dispersal.
There is no medical definition for "Bidens" as it does not refer to any medical condition, disease, or treatment. It is purely a taxonomic term used in botany to classify a group of plants with similar characteristics.
Psidium
Psidium rostratum
Psidium friedrichsthalianum
Psidium harrisianum
Psidium raimondii
Psidium amplexicaule
Psidium acutangulum
Psidium (horse)
Psidium sintenisii
Psidium galapageium
Psidium guineense
Psidium myrtoides
Psidium dumetorum
Psidium sartorianum
Psidium rufum
Psidium claraense
Psidium havanense
Psidium cattleyanum
Psidium huanucoense
Psidium guajava
Psidium acidum
Psidium cinereum
Psidium pedicellatum
Psidium longipetiolatum
Fangalabola
Euglossa hyacinthina
List of plants of Cerrado vegetation of Brazil
Tomago House
Guava
List of vascular plants of Norfolk Island
Psidium - Wikipedia
Psidium rostratum - Wikipedia
Psidium celastroides Urb. - Encyclopedia of Life
The Plant with Medicinal Properties: Guava (Psidium guajava)
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Myrtaceae6
- Psidium is a genus of trees and shrubs in the family Myrtaceae. (wikipedia.org)
- Psidium rostratum is a species of tree in the family Myrtaceae. (wikipedia.org)
- Guavas ( Psidium guajava ) are tropical fruits of Myrtaceae family , cultivated and enjoyed in many tropical and subtropical regions. (blogarama.com)
- Ti Psidium ket ti henero dagiti kayo ken dagiti bassit a kayo iti pamilia ti Myrtaceae . (wikipedia.org)
- The aims of this study were to evaluate the wound healing potential in vivo and the cytotoxic effects in vitro of Psidium guajava (Myrtaceae) leaf extract and commonly used corticosteroids. (bvsalud.org)
- 10. Belemtougri RG, Constantin B, Cognard C, Raymond G, Sawadogo L. Effects of two medicinal plants Psidium guajava L. (Myrtaceae) and Diospyros mespiliformis L. (Ebenaceae) leaf extracts on rat skeletal muscle cells in primary culture. (bvsalud.org)
Cattleianum1
- Comparative analysis of aroma compounds and sensorial features of strawberry and lemon guavas(Psidium cattleianum Sabine) [J]. Food Chemistry, 2014, 164: 272-277. (ifoodmm.cn)
Daun Jambu Biji2
Guineense7
- In vitro synergistic effect of Psidium guineense (Swartz) in combination with antimicrobial agents against methicillin-resistant Staphylococcus aureus strains. (bvsalud.org)
- The aim of this study was to evaluate the antimicrobial activity of aqueous extract of Psidium guineense Swartz (Araçá-do-campo) and five antimicrobials ( ampicillin , amoxicillin / clavulanic acid , cefoxitin , ciprofloxacin , and meropenem ) against twelve strains of Staphylococcus aureus with a resistant phenotype previously determined by the disk diffusion method . (bvsalud.org)
- Chemical variability in the essential oil of leaves of Araçá (Psidium guineense Sw. (biomedcentral.com)
- Psidium guineense , known as Araçá, is a Brazilian botanical resource with commercial application perspectives, based on the functional elements of its fruits and due to the use of its leaves as an anti-inflammatory and antibacterial agent. (biomedcentral.com)
- Psidium guineense Swartz [syn. (biomedcentral.com)
- The present work aimed at investigating the variability of the chemical composition of the essential oils of different specimens of Psidium guineense , occurring in the Amazon region, to contribute to the knowledge of its chemical types. (biomedcentral.com)
- The leaf samples of twelve Psidium guineense specimens were collected in Pará state, Brazil. (biomedcentral.com)
Activities of Psidium guajava1
- Anticough and antimicrobial activities of Psidium guajava Linn. (bvsalud.org)
Species7
- The most popularly cultivated species is the common guava, Psidium guajava. (wikipedia.org)
- Species Psidium acidum - Peru, Ecuador Psidium acranthum - Dominican Rep Psidium acunae - Cuba Psidium acutangulum - from Colombia to Amapá and Bolivia Psidium albescens - Jamaica Psidium amplexicaule - Puerto Rico, Leeward Is. (wikipedia.org)
- 1753. Species Plantarum 1: 470 in Latin Tropicos, Psidium L. Jules Janick, Robert E. Paull, ed. (2008). (wikipedia.org)
- Psidium celastroides is a species of woody plants in the family myrtles . (eol.org)
- Psidium glaziovianum is a species with very little known information. (andersontropicals.com)
- Psidium is a widely cultivated fruit plant among the Guava species. (toursofazores.com)
- Psidium is a genus with at least 60 to 100 species, occurring from Mexico and Caribbean to Argentina and Uruguay. (biomedcentral.com)
Linn9
- The use of Psidium guajava Linn. (jptcp.com)
- Psidium cujavus Linn. (medicalhealthguide.com)
- Psidium pyriferum Linn. (medicalhealthguide.com)
- Psidium pomiferum Linn. (medicalhealthguide.com)
- A study conducted to determine the antioxidative activities of the extracts from Psidium guajava Linn leaves showed that it has effects on scavenging hydroxyl radicals and inhibiting lipid peroxidation in the dose-dependent manner, The guava extracts possess the potential antioxidative activities and the flavonoids may be one of their antioxidative components. (medicalhealthguide.com)
- To explore the micro morphology and physio chemical parameters of the leaves of Psidium guajava Linn. (innovareacademics.in)
- Hypoglycemic and hypotensive effects of Psidium guajava Linn leaf aqueous extract. (innovareacademics.in)
- Anti inflammatory and analgesic effects of Psidium guajava Linn leaf aqueous extract in rats and mice. (innovareacademics.in)
- Roy CK, Kamath JV, Asad M. Hepatoprotective activity of Psidium guajava Linn leaf extract. (innovareacademics.in)
Genus1
- Biota of North America Program, 2013 county distribution maps, genus Psidium Linnaeus, Carl von. (wikipedia.org)
Effects of psidium1
- Antimicrobial effects of psidium guajava extract as one mechanism of its antidiarrhoeal action. (medicalhealthguide.com)
Extract7
- The current study is framed to evaluate the effect of Psidium guajava and Madhuca indica extract and fraction in Rotenone (RTN) induced Parkinson disease (PD) in mice. (jptcp.com)
- Obtained research results suggest that the spasmolytic activity of the Psidium guajava leaf remedy is mainly due to the aglycone quercetin, present in the leaf and in the extract mainly in the form of five flavonols. (uconn.edu)
- This research was conducted to determine the effect of combination of guava leaf (Psidium guajava L.) and sambiloto leaf (Andrographis paniculata) extract in maintaining the body immunity against heat stress exposure. (unair.ac.id)
- This study was undertaken to evaluate the glycaemic potential of Psidium guajava unripe fruit peel extract on blood glucose level of normal and streptozotocin induced diabetic rats. (medicalhealthguide.com)
- Ethanolic extract of leaves of Psidium guajava was investigated on anoxia stress tolerance test in Swiss mice. (phcogres.com)
- The results indicate that ethanolic extract of Psidium guajava has significant adaptogenic activity against a variety of biochemical and physiological perturbations in different stress models. (phcogres.com)
- Effect of ethanolic extract of Psidium guajava in forced swimming endurance test in rats (Swimming time). (phcogres.com)
Celastroides1
- Psidium celastroides Urb. (eol.org)
Antimicrobial1
- The present study was conducted for phytochemical characterization of leaves of Psidium guajava L. and also the antimicrobial potential against canine ootitis externa. (ijcmas.com)
Guava fruit4
- Ruby Supreme Guava Fruit Tree (psidium guajava) - Ruby Supreme Guava is a productive tree from Hawaii, producing large fruit for eating fresh off the tree or canning and preserving. (patioplants.com)
- Renal protective effects of extracts from guava fruit (Psidium guajava L.) in diabetic mice. (medicalhealthguide.com)
- Analysis of nutrition and valitile flavor of guava fruit (Psidium guaj" by ZHOU Nong, YANG Xihong et al. (ifoodmm.cn)
- Analysis of nutrition and valitile flavor of guava fruit (Psidium guajava L. (ifoodmm.cn)
Guajava leaf1
- Qian H, Nihorimbere V. Antioxidant power of phytochemicals from Psidium guajava leaf. (innovareacademics.in)
Araca2
- Kuntze, Psidium araca Raddi, Psidium benthamianum O. Berg, Psidium chrysobalanoides Standl. (cotram.org)
- Kuntze, Psidium araca Raddi, P. guyanense Pers. (biomedcentral.com)
Bayabas1
- Psidium aromaticum Blanco Bayabas (Ilk. (medicalhealthguide.com)
Salutare1
- Anonymous Reviewer ( 2018 ) Peer Review #1 of 'Effect of seasonality on chemical profile and antifungal activity of essential oil isolated from leaves Psidium salutare (Kunth) O. Berg (v0.2)' . (peerj.com)
Littorale2
- Red Strawberry Guava Tree (psidium littorale) - All Time Best Selling Guava - Deliciously sweet right off the tree. (monsterblooms.com)
- In this house thrive many edible crops and herbs such as lemon ( Citrus × limon ), orange ( Citrus x aurantium Sinensis-Gruppen), feijoa ( Acca sellowiana ), strawberry guava ( Psidium littorale ) and laurel ( Laurus nobilis ), among others. (lu.se)
Extracts2
- The current study provides validation of Psidium guajava and Madhuca indica extracts and fractions for its anti-PD activity and could be a valuable source for the treatment of PD in future. (jptcp.com)
- Antibacterial activity of guava, Psidium guajava Linnaeus, leaf extracts on diarrhea-causing enteric bacteria isolated from Seabob shrimp. (bvsalud.org)
Strawberry1
- In the Azores, the Psidium is known as the yellow strawberry guava. (toursofazores.com)
Antioxidant1
- Chemical composition and antioxidant activity of seven cultivars of guava (Psidium guajava) fruits[J]. Food Chemistry, 2015, 170: 327-335. (ifoodmm.cn)
Berg4
- Psidium costa-ricense O. Berg, Psidium costaricense Berg, Psidium laurifolium O. Berg, Psidium minus DC. (cotram.org)
- Psidium monticola O. Berg, Psidium multiflorum Cambess. (cotram.org)
- Berg, Psidium popenoei Standl. (cotram.org)
- Psidium schiedeanum O. Berg, Psidium schippii Standl. (cotram.org)
Jambu1
- Psidium guajava atau dikenali sebagai jambu batu berguna bagi mengubati gastroenteritis, disenteri, sakit perut dan masalah pencernaan. (iium.edu.my)
Antibacterial1
- Objective: To assess the antibacterial activity of Psidium guajava fractions and their effects on adhesion of a multispecies biofilm consisting of Streptococcus gordonii, Fusobacterium nucleatum, and Porphyromonas gingivalis in vitro. (edu.pe)
Evaluate1
- Further to evaluate the antistress activity of Psidium guajava in chronic stress condition, fresh Wistar rats were subjected to cold restraint stress (4° for 2 h) for 10 days. (phcogres.com)
Leaves3
- Chemical Constituents from the leaves of Psidium guajava. (jptcp.com)
- 7. Lutterodt GD, Maleque A. Effects on mice locomotor activity of a narcoticlike principle from Psidium guajava leaves. (bvsalud.org)
- Preventive effects of guava (Psidium guajava) leaves and its active compound against α-dicarbonyl compounds induced blood coagulation. (innovareacademics.in)
Isolation1
- Carotenoids from Guava Psidium guajava, Isolation and Structure Elucidation.J. Agric. (jptcp.com)
Active compound1
- Flavonoid active compound consisted in guava leaf (Psidium guajava L.) and andrographolide in sambiloto leaf (Andrographis paniculata) are substances that serve as immunomodulator. (unair.ac.id)
Activity1
- Jaykar B. Anti-inflammatory activity of volatile oil of Psidium guajava. (innovareacademics.in)
Colombia1
- Catálogo de la vegetación en jardines domésticos de Bogotá, Colombia. (jbb.gov.co)