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| Registros recuperados: 34 | |
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| Souza,Lúcia Kioko Hasimoto e; Oliveira,Cecília Maria Alves de; Ferri,Pedro Henrique; Santos,Suzana Costa; Oliveira Júnior,Juldásio Galdino de; Miranda,André Thiago Borges; Lião,Luciano Morais; Silva,Maria do Rosário Rodrigues. |
| Ethanolic extracts from leaves of Hyptis ovalifolia, H. suaveolens, H. saxatilis, Hyptidendrum canum, Eugenia uniflora, E. dysenterica, Caryocar brasiliensis and Lafoensia pacari were investigated for their antifungal activity against dermatophytes. The most effective plants were H. ovalifolia and E. uniflora, while Trichophyton rubrum was the most sensitive among the four dermatophytes species evaluated. This study has demonstrated antifungal properties of Brazilian Cerrado plant extracts in "in vitro" assays. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dermatophytes; Antifungal activity; Plant extracts; Susceptibility tests. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000300012 |
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| Guerrero,Ricardo O; Mahmud,T; Khan,H; Casañas,Bárbara; Morales,Mara. |
| Summary Bangladesh is an Asian country where only 20 per cent of the people are provided with modern healthcare services while the rest 80 per cent are dependent on traditional plant-based systems. Moreover, it is estimated that only 500 medicinal plant species had been recorded in Bangladesh out of 1,900 species regarded as having medicinal value. Purpose: Sixteen collections of medicinal plants of different families were extracted with several solvents (Ethanol 95%, water, chloroform, ethyl ether). The resulting extracts were subjected to five different specific bioassays: 1. Brine shrimp lethality test; 2. Antioxidant activity; 3. Inhibition of xanthine oxidase (XO); 4. Inhibition of ß-glucosidase, and 5. Inhibition of acetylcholinesterase. Methods.... |
| Tipo: Journal article |
Palavras-chave: Bangladesh; Plant extracts; Brine shrimp lethality test; Antioxidant activity; Xanthine oxidase inhibition; SS-glucosidase inhibition; Acetylcholinesterase inhibition. |
| Ano: 2004 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962004000200009 |
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| Núñez,V.; Otero,R.; Barona,J.; Saldarriaga,M.; Osorio,R.G.; Fonnegra,R.; Jiménez,S.L.; Díaz,A.; Quintana,J.C.. |
| We determined the neutralizing activity of 12 ethanolic extracts of plants against the edema-forming, defibrinating and coagulant effects of Bothrops asper venom in Swiss Webster mice. The material used consisted of the leaves and branches of Bixa orellana (Bixaceae), Ficus nymphaeifolia (Moraceae), Struthanthus orbicularis (Loranthaceae) and Gonzalagunia panamensis (Rubiaceae); the stem barks of Brownea rosademonte (Caesalpiniaceae) and Tabebuia rosea (Bignoniaceae); the whole plant of Pleopeltis percussa (Polypodiaceae) and Trichomanes elegans (Hymenophyllaceae); rhizomes of Renealmia alpinia (Zingiberaceae), Heliconia curtispatha (Heliconiaceae) and Dracontium croatii (Araceae), and the ripe fruit of Citrus limon (Rutaceae). After preincubation of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Neutralization; Edema; Defibrination; Coagulation; Bothrops asper venom; Plant extracts. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2004000700005 |
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| Oshima-Franco,Y.; Alves,C. M. V.; Andréo Filho,N.; Gerenutti,M.; Cintra,A. C. O.; Leite,G. B.; Rodrigues-Simioni,L.; Silva,M. G.. |
| Numerous plants are used as snakebite antidotes in Brazilian folk medicine, including Casearia sylvestris Swartz, popularly known as guaçatonga. In this study, we examined the action of a hydroalcoholic extract from C. sylvestris on the neuromuscular blockade caused by bothropstoxin-I (BthTX-I), a myotoxin from Bothrops jararacussu venom, in mouse isolated phrenic nerve-diaphragm (PND) preparations. Aqueous (8 and 12 mg/ml, n=4 and 5, respectively) and hydroalcoholic (12 mg/ml, n=12) extracts of the leaves of C. sylvestris caused facilitation in PND preparations followed by partial neuromuscular blockade. BthTX-I (20 µg/ml, n=4) caused 50% paralysis after 65±15 min (mean ± S.E.M). Preincubation (30 min at 37° C) of BthTX-I (20 µg/ml, n=4) with a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative medicine; Phytotherapy; Plant extracts; Snakebite. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000400007 |
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| Rizzo,PV; Menten,JFM; Racanicci,AMC; Santarosa,J. |
| Feed is responsible for about 70% of broilers production costs, leading to an increasing number of studies on alternative dietary products that benefit bird performance and lower production costs. Since the 1950s, antimicrobial additives are the most frequently used performance enhancers in animal production and their positive results are observed even in high-challenge conditions. Since the 1990s, due to the ban of the use of some antibiotics as growth promoters and the growing trend of the public to consume natural products, plant extracts have been researched as alternatives to antibiotic growth promoters. The first study that evaluated the antibacterial activities of plant extracts was carried out in 1881; however, they started to be used as flavor... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Performance; Plant extracts. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400001 |
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| Cogo,Laura Lúcia; Monteiro,Cristina Leise Bastos; Miguel,Marilis Dallarmi; Miguel,Obdulio Gomes; Cunico,Miriam Machado; Ribeiro,Marcelo Lima; Camargo,Eloá Ramalho de; Kussen,Gislene Maria Botão; Nogueira,Keite da Silva; Costa,Libera Maria Dalla. |
| The antibacterial activity of plant extracts obtained from Bixa orellana L., Chamomilla recutita L., Ilex paraguariensis A. St.-Hil., Malva sylvestris L., Plantago major L. and Rheum rhaponticum L. has been evaluated against two reference strains and eleven clinical isolates of Helicobacter pylori. All the plant species chosen are used in popular Brazilian cuisine and folk medicine in the treatment of gastrointestinal disorders. Initial screening was made by the disk diffusion test and then minimum inhibitory concentration was determined by the agar dilution method. The results presented in this work demonstrated that among the plant preparations analyzed, B. orellana L., C. recutita L., I. paraguariensis A. St.-Hil. and M. sylvestris L. were capable of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helicobacter pylori; Antibacterial activity; Plant extracts. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000200007 |
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| Zapata,Nelson; Vargas,Marisol; Monsálvez,Manuel; Ceballos,Ricardo. |
| The aim of this study was to assess the effect of Drimys winteri J.R. Forst. & G. Forst. bark and its extracts, obtained sequentially with n-hexane, acetone, and methanol, against Gaeumannomyces graminis var. tritici (Ggt). Ground bark of D. winteri was mixed with potato dextrose agar growth media at concentrations of 250, 500, 1000, 2000, and 4000 mg L-1 in Petri plates. Each extract was mixed at concentrations of 100, 200, 400, and 800 mg L-1. Petri plates were inoculated in the center with a 5-mm mycelium disk and were incubated at 24 ± 1 ºC. Daily measurements of mycelium radial growth were taken to determine growth rate and growth inhibition (%). A ground bark concentration of 978 mg L-1 was needed to inhibit Ggt growth by 50%, while extracts... |
| Tipo: Journal article |
Palavras-chave: Wheat take-all; Soil borne; Plant extracts; Ggt. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000100006 |
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| Cauerhff,Ana; Castro,Guillermo R. |
| Background: In the past decade, considerable attention has been paid for the development of novel strategies for the synthesis of different kind of nano-objects. Most of the current strategies are usually working by the use physical or chemical principles to develop a myriad of nano-objects with multiple applications. Main fields of nanotechnology applications range from catalysis, micro- and nano-electronics (semiconductors, single electrons transistors), non-linear optic devices, photo-electrochemistry to biomedicine, diagnostics, foods and environment, chemical analysis and others. Results: Two main avenues for nanoparticles synthesis: cell-free extract and cell cultivation have been reported. The state of art of both biotechnological approaches for... |
| Tipo: Journal article |
Palavras-chave: Bacteria; Bionanoparticles; Fermentation; Fungi green chemistry; Plant extracts. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000300011 |
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| Cruz-Estrada,Angel; Gamboa-Angulo,Marcela; Borges-Argáez,Rocío; Ruiz-Sánchez,Esaú. |
| Background: The whitefly (Bemisia tabaci Genn.) is a widely distributed and highly harmful plant pest species. The management of B. tabaci has been typically carried out by chemical pesticides. In the last decade however, there has been an increasing interest in natural products, particularly those of plant origin, to control this pest species. In the present work, aqueous and ethanolic extracts of native plants from the flora of the Yucatán peninsula (Acalypha gaumeri, Annona squamosa, Carlowrightia myriantha, Petiveria alliaceae and Trichilia arborea) and the introduced plant Azadirachta indica were collected and evaluated for insecticidal activity against eggs and nymphs Bemisia tabaci. Results: Most of the aqueous and ethanolic extracts showed high... |
| Tipo: Journal article |
Palavras-chave: Annona squamosa; Bemisia tabaci; Botanical insecticides; Plant extracts; Petiveria alliaceae. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000100006 |
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| Pelícia,VC; Stradiotti,AC; Araujo,PC de; Maruno,MK; Carvalho,FB de; Pezzato,AC; Sartori,JR. |
| The objective of this study was to evaluate the effect of the dietary supplementation of phytogenic additives (PAs) and glutamine plus glutamic acid (Gln/Glu), associated or not, in replacement of antibiotic growth promoters and anticoccidials (AGP/AC) on the performance and carcass yield of broilers. Five hundred male Cobb broilers were housed in an experimental house and randomly distributed into five treatments, with four replicates of 25 birds each. Treatments consisted of a control diet (CD); CD+AGP/AC; CD+Gln/Glu; CD+PAs; CD+Gln/ Glu+PAs. Diets were formulated only with plant feedstuffs, i.e., they did not contain any animal byproducts. Performance data were collected for the accumulated periods of 1-7, 1-21, and 1-42 days of age. Carcass yield and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative additives; Plant extracts; Essential oils. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400002 |
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| Registros recuperados: 34 | |
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