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Registros recuperados: 54
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Abordagem fitoquímica preliminar em folhas de sálvia. Repositório Alice
PEREIRA, R. de C. A.; CASTRO, N. E. A. de; CARDOSO, M. G.; PINTO, J. E. B. P.; BERTOLUCCI, S. K. V.; PINHEIRO, R. C..
Este trabalho teve como objetivo realizar o estudo fitoquímico preliminar em folhas de sálvia, visando identificar classes de compostos presentes.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Dalmatian sage; Leaf analysis; Análisis foliares; Nutrición de las plantas; Extractos vegetales; Propiedades sensoriales; Sálvia; Análise Foliar; Nutrição Vegetal; Extrato Vegetal; Propriedade Organoléptica; Salvia officinalis; Plant nutrition; Plant extracts; Sensory properties.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1112326
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Allelopathic effect of black mustard tissues and root exudates on some crops and weeds Planta Daninha
Al-Sherif,E; Hegazy,A.K.; Gomaa,N.H.; Hassan,M.O..
Laboratory and greenhouse experiments were conducted to evaluate the phytotoxic effect of black mustard extracts and root exudates on two crops: Trifolium alexandrinum and Triticum aestivum, and two weeds: Phalaris paradoxa and Sisymbrium irio. The seeds were treated with aqueous and ethanolic extracts and chloroform for eight days, or subjected to root exudates of just harvested mustard in a greenhouse for five weeks. High-performance liquid chromatography (HPLC) was used to quantify phytotoxins from plant tissues. Seed germination of P. paradoxa was reduced with the lowest concentration of the different extracts. However, the aqueous extract at 4% completely curtailed the germination of all the target species. In general, plant extracts had a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allelopathy; Brassica nigra; Plant extracts; Isothiocyanates (ITCs); Phenolic acids.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000100002
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Análise de trilha em caracteres de progênies de urucueiros (Bixa orelanna L.). Repositório Alice
COSTA, J. G. da; PIMENTEL, F. A.; LEDO, F. J. da S..
O cultivo do urucuzeiro destina-se à extração de corantes ou pigmentos extraídos do arilo de sementes, denominados bixina ou norbixina (1, 7, 10) e utilizados, principalmente, nas indústrias alimentícias e de cosméticos. Em geral, as áreas ,ais extensas de plantios de urucum apresentam grande variabilidade genética, causada pela polinização cruzada entre os diversos indivíduos, dando origem a uma infinidade de material com características próprias, completamente diferentes das plantas que produziram as sementes utilizadas nos plantios.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Urucum; Annatto; Achiote; Melhoramento genético vegetal; Planta corante; Urucu; Bixa orellana L; Características agronômicas; Plant breeding; Natural dyes; Plant extracts; Agronomic traits; Fitomejoramiento; Tintes naturales; Extractos vegetales; Características agronómicas.
Ano: 1999 URL: http://www.alice.cnptia.embrapa.br/handle/doc/502891
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Antibacterial activity of avocado extracts (Persea americana Mill.) against Streptococcus agalactiae Phyton
Cardoso,PF; Scarpassa,JA; Pretto,LG; Otaguiri,ES; Yamada-Ogatta,SF; Nakazato,G; Perugini,MRE; Moreira,IC; Vilas-BÔas,GT.
Plants contain numerous constituents and are valuable sources of new biologically active molecules. Avocado (Persea americana Mill.) is cultivated and used as food in most tropical and subtropical countries. Its high nutritional value and biological activities, as antioxidant, antimicrobial and analgesic properties, have been thoroughly investigated. Interest in plant extracts with antimicrobial properties has increased as a result of the indiscriminate use of antibiotics, leading to the emergence of resistant bacterial strains. Among bacterial species with clinical importance to multiple hosts, Streptococcus agalactiae is outstanding, as it can cause infections especially in humans, fsh and cattle. Te current study aimed to evaluate the antimicrobial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant extracts; Disk difusion method.
Ano: 2016 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572016000200007
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Antibacterial activity of plant extracts from Brazil against fish pathogenic bacteria BJM
Castro,S.B.R.; Leal,C.A.G.; Freire,F.R.; Carvalho,D.A.; Oliveira,D.F.; Figueiredo,H.C.P..
The aim of this work was to evaluate the antibacterial activity of Brazilian plants extracts against fish pathogenic bacteria. Forty six methanolic extracts were screened to identify their antibacterial properties against Streptococcus agalactiae, Flavobacterium columnare and Aeromonas hydrophila. Thirty one extracts showed antibacterial activity.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Plant extracts; Bacteria; Fish.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000400030
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Anti-Escherichia coli activity of Brazilian plant extracts: New trends in Veterinary research Arq. Bras. Med. Vet. Zootec.
Camargo,L.R.P.; Suffredini,I.B..
Escherichia coli é uma bactéria presente no trato intestinal de animais de sangue quente. Entretanto, a perda do equilíbrio em sua relação com o hospedeiro pode causar doenças que levam a perdas econômicas, quando se trata de animais de produção, e perdas incalculáveis, quando se trata de animais silvestres. O presente estudo testou diversos extratos aquosos e orgânicos, obtidos de plantas da Amazônia brasileira, contra Escherichia coli (ATCC 25922). Usando o ensaio de disco difusão em ágar Mueller-Hinton (DDA), foram testados 1.791 extratos quanto à sua atividade antibacteriana. Os extratos que mostraram halo de inibição de crescimento bacteriano foram testados no modelo da microdiluição em caldo (MDBC) contra uma suspensão bacteriana preparada na escala...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Escherichia coli; Plant extracts; Pathogenicity.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000200041
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ANTIFUNGAL POTENTIAL OF A BRASSICACEOUS WEED Sisymbrium irio AGAINST Macrophomina phaseolina Planta Daninha
JAVAID,A.; AFZAL,L.; SHOAIB,A..
ABSTRACT Macrophomina phaseolina, a soil-borne plant pathogen, has the ability to cause diseases in about 500 plant species. Unfortunately, so far no registered fungicide is available against this fungal pathogen. In the present study, different extracts of Sisymbrium irio, a weed of family Brassicaceae, were tested for evaluation of their antifungal activity against M. phaseolina. In screening bioassays, antifungal activity of methanolic extracts of 1% to 6% concentrations of different parts (leaf, stem, root and fruit) of the weed was assessed against the fungal pathogen. Methanolic leaf and root extracts significantly reduced fungal biomass up to 59% and 69% over control, respectively. Methanolic leaf and root extracts were further partitioned using...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antifungal activity; London rocket; Plant extracts.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100255
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Antifungal properties of Brazilian cerrado plants BJM
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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Anti-Helicobacter pylori activity of plant extracts traditionally used for the treatment of gastrointestinal disorders BJM
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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Antioxidant and cytotoxic activity of Tecoma stans against lung cancer cell line (A549) BJPS
Robinson,Jayachandran Philip; Suriya,Kumaresan; Subbaiya,Ramasamy; Ponmurugan,Ponnusamy.
ABSTRACT Human have been constantly using plants and plant products to overcome many diseases. The antioxidant property of the plant sources is studied to obtain an efficacious drug against cancer. The objectives of the present study is to evaluate the antioxidant and cytotoxic activity of the Tecoma stans extracts against lung cancer cell line in comparison with vincristine drug. The antioxidant activity was studied using the standard DPPH assay and the cytotoxic activity using MTT assay. DPPH assay results show that methanolic extract of T. stans in higher concentration show better antioxidant potential than the standard L-ascorbic acid. They exhibited strong antioxidant potential at 20 µg/mL concentration. The absorbance at 517 nm showed that in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tecoma stans/extract/cytotoxicity; Tecoma stans/extract/antioxidant activity; Free radical scavenging; Plant extracts; Lung cancer cell line/study/drugs.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000300605
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Antitumoral, antioxidant and antimicrobial molecules from combretum rupicola. Repositório Alice
SANTOS, S. N.; KAVAMURA, V.; CASTANHA, R. F.; ANDREOTE, F. D.; CARVALHO, J. E.; QUEIROZ, S. C. do N. de; MELO, I. S. de.
This investigation describes the anticancer, antioxidant and antimicrobial properties of the extracts of Combretum rupicola, a native plant from Northeast of Brazil. Methanolic, ethyl acetate and chloroform extracts from leaves of C. rupicola were evaluated in relation to their potential in inhibiting the cell growth and cytotoxic properties against nine human cancer cell lines (MCF-7, NCI-ADR/RES, OVCAR-3, PC-3, HT-29, NCIH460, 786-O, UACC-62, K-562). In addition, antioxidant activity of these extracts was measured using DPPH as radical scavenging assay and the ntimicrobial activities against nine pathogens were tested by agar diffusion method. Preliminary results showed that the this plant demonstrates to have moderate activity against bacteria but, on...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Combretum rupicola; Planta medicinal; Extrato vegetal; Plant extracts; Medicinal plants; Antioxidant activity; Antineoplastic agents.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/950033
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Application of HPLC-DAD for the quantification of Lycorine in Galanthus elwesii Hook BJPS
Emir,Ahmet; Emir,Ceren; Bozkurt,Buket; Onur,Mustafa Ali; Somer,Nehir Unver; Kaya,Gulen Irem.
ABSTRACT In the present study, a reversed-phase high-performance liquid chromatographic method has been used for the quantitative determination of lycorine in the aerial parts and bulbs of G. elwesii Hook. A simple method for the extraction of lycorine in low mass plant samples was employed utilizing pre-packed columns with diatomaceous earth (Extrelut(r)). The chromatographic separation was performed using an isocratic system with a mobile phase of trifluoroacetic acid-water-acetonitrile (0.01:92.5:7.5, v/v/v) applied at a flow rate 1 mL min-1 using diode array detector. The content of lycorine in the bulbs and aerial parts of G. elwesii collected from Demirci (Manisa) was found as 0.130 and 0.162 %, respectively. Additionally, in the bulbs of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alkaloids; Amaryllidaceae; Plant extracts; High Performance Liquid Chromatography/method validation; High Perfomance Liquid Chromatography/quantitative analysis..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000100603
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Atividade ovicida e larvicida in vitro do óleo essencial de Eucalyptus globulus sobre Haemonchus contortus. Repositório Alice
MACEDO, I. T. F.; BEVILAQUA, C. M. L.; OLIVEIRA, L. M. B. de; CAMURÇA-VASCONCELOS, A. L. F.; VIEIRA, L. da S.; OLIVEIRA, F. R.; QUEIROZ JÚNIOR, E. M.; PORTELA, B. G.; BARROS, R. S.; CHAGAS, A. C. de S..
O objetivo deste trabalho foi avaliar o efeito do óleo essencial de Eucalyptus globulus (OEEG) sobre a eclosão e desenvolvimento de larvas de Haemonchus contortus. A determinação da composição química do OEEG foi feita por meio de cromatografia gasosa acoplada à espectrometria de massa. No teste de eclosão de ovos (TEO), utilizaram-se as concentrações 21,75; 17,4; 8,7; 5,43 e 2,71 mg.mL-1; e no de desenvolvimento larvar (TDL) as concentrações foram 43,5; 21,75; 10,87; 5,43 e 2,71 mg.mL-1. Cada ensaio foi acompanhado por um controle positivo, 0,02 mg.mL-1 tiabendazol, no TEO e 0,008 mg.mL-1 ivermectina no TDL, e por um controle negativo com o diluente Tween 80 (3%). A eficácia máxima obtida pelo OEEG sobre ovos foi de 99,3% na concentração de 21,75 mg.mL-1...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Ovino; Caprino; Nematódeo gastrintestinal; Anti-helmíntico; Haemonchus contortus; Fitoterapia; Óleo essencial; Planta medicinal; Eucalyptus globulus; Haemonchus contortus; Phytoterapic; Anthelmintic; Melaleuca alternifolia; Nematodes; Plant extracts; Sheep; Goats; Toxicity; Tenebrionidae.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/529190
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Avaliação da toxicidade de solvente de extratos vegetais com ação antiviral em sêmen caprino refrigerado. Repositório Alice
PEIXOTO, R. M.; ANDRIOLI, A.; SANTOS, D. O.; PINHEIRO, R. R.; ARAÚJO, J. F.; SOUSA, A. L. M. de; SILVA, D. F.; DAMASCENO, E. M.; TEIXEIRA, M. F. da S..
[Evaluation of Solvent Toxicity of Plant Extract with Antiviral Action in Refrigerated Goat Semen]. Background: Caprine Arthritis Encephalitis Virus have been detected in sperm of breeding goats causing economic losses. In order to control the virus, researches aiming to identify natural extracts with potential antiviral effects are performed. However, aqueous or ethanolic extracts must be diluted in dimethyl sulfoxide (DMSO), which is a substance with unknown effects in sperm quality when present in diluting media. Therefore, this study aimed to evaluate sperm viability of refrigerated caprine semen diluted in media containing DMSO. This was performed to provide data that aid in researches involving the use of this component with natural extracts that may...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Tris yolk; Tris Gema; MEM; Dimethyl sulfoxide; Dimetilsulfóxido; Fitocomposto; Diluente; Caprino; Sêmen; Extrato vegetal; Criopreservação; Goats; Semen preservation; Caprine arthritis encephalit virus; Antimicrobial properties; Plant extracts; Semen diluents; Brazil.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1076169
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Biological properties of medicinal plants: a review of their antimicrobial activity J. Venom. Anim. Toxins incl. Trop. Dis.
Silva,NCC; Fernandes Júnior,A.
Plants have been used for thousands of years to flavor and conserve food, to treat health disorders and to prevent diseases including epidemics. The knowledge of their healing properties has been transmitted over the centuries within and among human communities. Active compounds produced during secondary vegetal metabolism are usually responsible for the biological properties of some plant species used throughout the globe for various purposes, including treatment of infectious diseases. Currently, data on the antimicrobial activity of numerous plants, so far considered empirical, have been scientifically confirmed, concomitantly with the increasing number of reports on pathogenic microorganisms resistant to antimicrobials. Products derived from plants may...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Medicinal plants; Phytochemistry; Antimicrobial activity; Plant extracts; Essential oils; Synergism.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000300006
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Biologically Synthesized Silver Nanoparticles for Enhancing Tetracycline Activity Against Staphylococcus aureus and Klebsiella pneumoniae BABT
Hussein,Elsayed Alsaied Masoud; Mohammad,Ali Al-Hajry; Harraz,Farid Abourageh; Ahsan,Mohd Faisal.
Abstract Phytochemical content of plant extracts can be used effectively to reduce the metal ions to nanoparticles in one-step green synthesis process. In this study, six plant extracts were used for the synthesis of silver nanoparticles (AgNPs). Biologically synthesized AgNPs was characterized using UV-Vis Spectrophotometer, Field Emission Scanning Electron Microscope (FE-SEM), X-ray diffraction (XRD), Energy Dispersive X-ray spectroscopy (EDX) and Fourier Transform Infrared (FTIR) spectroscopy. The individual and combined effects of AgNPs and tetracycline against S. aureus and K. pneumoniae were assessed. Ginger, onion and sidr extracts supported AgNPs formation while arak, garlic and mint extracts failed to convert the silver ions to AgNPs. The present...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Silver nanoparticles; Biosynthesis; Plant extracts; Tetracycline; S. aureus; K. pneumoniae.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100308
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Bionanoparticles, a green nanochemistry approach Electron. J. Biotechnol.
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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Comparison and Characterization of Garlic (Allium sativum L.) Bulbs Extracts and Their Effect on Mortality and Repellency of Tetranychus urticae Koch (Acari: Tetranychidae) Chilean J. Agric. Res.
Hincapié Ll,Carlos Augusto; López P,Gloria Eugenia; Torres Ch,Ricardo.
Tetranychus urticae Koch is a pest that causes great economic losses because it attacks a wide range of host plants. Also, some populations have developed resistance against commercial acaricides. This work compares different extracts from garlic (Allium sativum L.) bulbs measuring their toxicity and repellency effects on T. urticae. Extracts were obtained using as solvents CO2 in supercritical conditions (CSC), ethanol and petroleum ether using soxhlet and soaking methods and soaking in water. The supercritical fluid extraction technique allows for obtaining extracts at low temperature using high pressures, avoiding compound degradation and making possible solvent separation by exposing the extract at room temperature. Mites were bred on bean plants...
Tipo: Journal article Palavras-chave: Two-spotted spider mite; Plant extracts; Miticidal effect; Liliaceae.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000400001
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Conyza canadensis: green extraction method of bioactive compounds and evaluation of their antifungal activity. Repositório Alice
PORTO, R. S.; RATH, S.; QUEIROZ, S. C. do N. de.
Abastrac: Synthetic fungicides are a common treatment for post-harvest diseases in fruits, although demand is increasing for alternatives such as biopesticides. The aim of this work was to investigate the presence of naturally occurring antifungal compounds in Brazilian specimens of the weed Conyza canadensis. Two compounds [(4Z)-lachnophyllum lactone and (4Z,8Z)-matricaria lactone] were isolated and their antifungal activities were evaluated against eight postharvest disease fungi. Aspergillus niger, Cladosporium sp., and Penicillium digitatum proved susceptible to the treatment (minimum inhibitory concentrations varying from 32 to 64 µg mL-1). These fungi are common postharvest pathogens of fruits and vegetables, causing rots and secreting mycotoxins. A...
Tipo: Nota Técnica/Nota Científica (ALICE) Palavras-chave: Atividade antifúngica; Biopesticida; Extrato vegetal; Planta produtora de pesticida; Doença de planta; Pós-colheita; Conyza canadensis; Antifungal properties; Plant extracts; Biopesticides.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1072949
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Crude extracts of Drimys winteri bark to inhibit growth of Gaeumannomyces graminis var. tritici Chilean J. Agric. Res.
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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