Consulta: creatorFacets:"Miguel,Marilis Dallarmi"
Registros recuperados: 13
Data/hora: 06/06/2024 03:34:26

Efeito alelopático e toxicidade frente à Artemia salina Leach dos extatos do fruto de Euterpe edulis Martius
Provedor de dados: 39
Autores: Lima,Cristina Peitz de; Cunico,Miriam Machado; Trevisan,Roberta Rafaela; Philippsen,Andressa Frizzo; Miguel,Obdúlio Gomes; Miguel,Marilis Dallarmi.
Alelopatia é um processo envolvendo metabólitos secundários produzidos por plantas que infl uenciam o crescimento e desenvolvimento de sistemas agrícolas. Devido à toxicidade dos herbicidas sintéticos para o meio ambiente e para a saúde humana tem-se aumentado o interesse na exploração da alelopatia como uma alternativa para o controle de plantas daninhas. O presente trabalho avaliou efeito dos extratos dos frutos de Euterpe edulis Martius sobre o desenvolvimento de cipselas e plântulas de Lactuca sativa Linné, foram determinados o índice de velocidade de germinação, o crescimento da radícula e do hipocótilo. Para a avaliação da toxicidade dos extratos foi realizado o ensaio de toxicidade frente ao microcrustáceo Artemia salina Leach determinando-se a CL50...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alelopatia; Palmeira Juçara; Mata Atlântica; Toxicidade.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000200009

Anti-Helicobacter pylori activity of plant extracts traditionally used for the treatment of gastrointestinal disorders
Provedor de dados: 58
Autores: 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

Ocotea nutans (Nees) Mez (Lauraceae): chemical composition, antioxidant capacity and biological properties of essential oil
Provedor de dados: 60
Autores: Betim,Fernando Cesar Martins; Oliveira,Camila Freitas de; Souza,Angela Maria de; Szabo,Ellis Marina; Zanin,Sandra Maria Warumby; Miguel,Obdulio Gomes; Miguel,Marilis Dallarmi; Dias,Josiane de Fátima Gaspari.
The present study was undertaken to assess the potential uses of the essential oil obtained from Ocotea nutans (Nees) Mez. The hydrodistilled essential oil from O. nutans leaves was analyzed by gas chromatography-mass spectrometry. Fifty-eight compounds representing 87,29% of the total leaf essential oil components were identified, of which biciclogermacrene(11.41%), germacrene-D (4.89%), bisabolol-11-ol(3.73%) and spathulenol (3.71%) were the major compounds. The essential oil from O. nutans were tested for antibacterial activity using the minimum inhibitory concentracion (MIC) method, Artemia salina method, larvicidal activity in Aedes aegypti, and antioxidant capacity.The antioxidant activity measured by the phosphomolybdenum complex and Prussian blue...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocoteanutans/essential oil/evaluation; Antioxidant capacity; Aedesaegypti; Toxic potential.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100513

Residues of Citrus sinensis (L.) Osbeck as agents that cause a change in antioxidant defense in plants
Provedor de dados: 60
Autores: Nunes,Patrícia Mayra Pavan; Silva,Cristiane Bezerra da; Paula,Cristiane da Silva; Smolarek,Fernanda Ferreira; Zeviani,Walmes Marques; Chaves,Suelen Cristina; Lorini,Fernando; Dias,Josiane de Fátima Gaspari; Miguel,Obdulio Gomes; Zanin,Sandra Maria Warumby; Miguel,Marilis Dallarmi.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: &lt; Italic&gt; Citrus sinensis&lt; /italic&gt; (L.) Osbeck/residues/utilization &lt; Italic&gt; Citrus sinensis&lt; /italic&gt; (L.) Osbeck/seeds/allelopathic potential Rutaceae/residues/utilization Fixed oil Fatty acid.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502015000200479

Composition, antioxidant properties, and biological activities of the essential oil extracted from Ocotea diospyrifolia (Meisn.) Mez.
Provedor de dados: 60
Autores: Fabri,Natasha Tiemi; Gatto,Larissa Junqueira; Furusho,Alethéia Santos; Garcia,Meira Janette Ballestros; Marques,Francisco de Assis; Miguel,Marilis Dallarmi; Montrucchio,Deise Prehs; Zanin,Sandra Maria Warumby; Miguel,Obdulio Gomes; Dias,Josiane de Fátima Gaspari.
The article has aimed to characterize the essential oil extracted from Ocotea diospyrifolia (Meisn.) Mez. leaves, in terms of its chemical composition and antioxidant, hemolytic, and phytotoxic potentials, as well as its toxicity against Artemia salina. The major constituents identified by CG-MS were d-elemene, spathulenol, and b-atlantol. When screened for potential biological activities, the essential oil presented low toxicity against Artemia salina, and a capacity of lysing red blood cells. Also, the evaluation of its in vitro antioxidant activity, using the phosphomolybdenum method, showed better results when compared to butylhydroxytoluene (BHT) and rutin. In conclusion, the results obtained showed certain in vitro toxicity, leading to an interesting...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ocotea diospyrifolia; Lauraceae; Spathulenol; Antioxidant; Toxicity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100593

Chemical review and studies related to species from the genus Tynanthus (Bignoniaceae)
Provedor de dados: 60
Autores: Cansian,Fernanda Colombi; Merino,Francis José Zortéa; Dias,Josiane de Fátima Gaspari; Zanin,Sandra Maria Warumby; Miguel,Obdulio Gomes; Miguel,Marilis Dallarmi.
Species from the Bignoniaceae Family, including the genus Tynanthus, are very prevalent in the tropical Americas, with specimens found in a large part of the Brazilian territory. These plants are commonly used in traditional medicine for several purposes, and some studies have described their chemical structure, in addition to other reports related to some species from this genus. This review aimed to gather information from published works concerning species of the genus Tynanthus, as well as to detect flaws in research related to these plants, which may have great biological and pharmaceutical importance. Also, this review points out some common chemical characteristics of these species, providing information that may help new researchers to improve...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Tynanthus/pharmacognosy; Tynanthus/phytochemistry; Tynanthus/biological activity; Bignoniaceae/pharmacognosy; Bignoniaceae/phytochemistry; Medicinal plants.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502015000300515

Composition of essential oil and allelopathic activity of aromatic water of Aster lanceolatus Willd: (Asteraceae)
Provedor de dados: 60
Autores: Dias,Josiane de Fátima Gaspari; Miguel,Obdúlio Gomes; Miguel,Marilis Dallarmi.
The essential oil obtained from flowers of Aster lanceolatus was submitted the CG-MS and presented as result thirteen substances with largest concentration; among them, the caryophyllene oxide with the larger one. The aromatic water obtained during the extraction process of this essential oil was forwarded to allelopathic test, and demonstrated to be capable to inhibit the germination and growth of Lactuca sativa.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Aster lanceolatus; Caryuphyllene oxide; Aromatic water; Allelopathy.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000300012

Chemical composition, phytotoxic potential, biological activities and antioxidant properties of Myrcia hatschbachii D. Legrand essential oil
Provedor de dados: 60
Autores: Gatto,Larissa Junqueira; Fabri,Natasha Tiemi; Souza,Angela Maria de; Fonseca,Natasha Stopinski Triaquim da; Furusho,Alethéia dos Santos; Miguel,Obdulio Gomes; Dias,Josiane de Fatima Gaspari; Zanin,Sandra Maria Warumby; Miguel,Marilis Dallarmi.
Myrcia hatschbachii D. Legrand (Myrtaceae) is a native and endemic species from Brazil. This study investigated the essential oil composition, phytotoxic potential, in vitro toxicity, antioxidant properties and antibacterial activity of species. Chromatographic analysis of essential oil identified trans-calamanene, (E)-caryophyllene and spathulenol as major components. Antioxidant capacity was determined by the DPPH• scavenging method and phosphomolybdenum complex formation assay. Antibacterial activity was evaluated using the Minimal Inhibitory Concentration test, demonstrating that the essential oil was active toward Enterococcus faecalis and Staphylococcus aureus. Phytotoxic activity of essential oil was analyzed by testing interference on germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Essential oil; Phytotoxic; Antioxidant; Antibacterial; Hemolysis; Artemia salina.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100560

Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique
Provedor de dados: 60
Autores: Fujiwara,Gislene Mari; Campos,Ranieri; Costa,Camila Klocker; Dias,Josiane de Fátima Gaspari; Miguel,Obdulio Gomes; Miguel,Marilis Dallarmi; Marques,Francisco de Assis; Zanin,Sandra Maria Warumby.
Stigmasterol - a plant sterol with several pharmacological activities - is susceptible to oxidation when exposed to air, a process enhanced by heat and humidity. In this context, microencapsulation is a way of preventing oxidation, allowing stigmasterol to be incorporated into various pharmaceutical forms while increasing its absorption. Microparticles were obtained using a blend of polymers of sodium alginate, starch and chitosan as the coating material through a one-stage process using the external gelation technique. Resultant microparticles were spherical, averaging 1.4 mm in size. Encapsulation efficiency was 90.42% and method yield 94.87%. The amount of stigmasterol in the oil recovered from microparticles was 9.97 mg/g. This technique proved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stigmasterol/microencapsulation; Microencapsulation; Sodium alginate/drugs coating; Chitosan/drugs coating; Starch/drugs coating; Natural polymers/drugs coating.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502013000300015

Phytochemical constituents and preliminary toxicity evaluation of leaves from Rourea induta Planch. (Connaraceae)
Provedor de dados: 60
Autores: Kalegari,Milena; Miguel,Marilis Dallarmi; Dias,Josiane de Fátima Gaspari; Lordello,Ana Luísa Lacava; Lima,Cristina Peitz de; Miyazaki,Cristina Mayumi Sasaki; Zanin,Sandra Maria Warumby; Verdam,Maria Christina dos Santos; Miguel,Obdulio Gomes.
Most active plants are toxic at high doses and it is therefore important to investigate the preliminary toxicity of plant extracts. The Rourea induta species is a potential drug with no phytochemical or biological studies registered in the literature. Thus, a phytochemical study and a toxicity analysis of the ethanolic extract obtained from the leaves of Rourea induta Planch., Connaraceae, was run. A long chain hydrocarbon, n-tetracosane, and four flavonoids were identified: quercetin, and three glycosylated derivates, quercetin-3-O-α-arabinofuranoside, quercetin-3-O-β-xyloside and quercetin-3-O-β-galactoside. This is the first time these have been isolated in this species. The structures were elucidated by 13C NMR, ¹H NMR, UV and IR spectroscopy. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rourea induta/phytochemistry; Connaraceae/phytochemistry; Flavonoids; N-tetracosane; Plant extracts/toxicity.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000300023

Antioxidant and antibacterial activity of extracts, fractions and isolated substances from the flowers of Acacia podalyriifolia A. Cunn. ex G. Don
Provedor de dados: 60
Autores: Andrade,Cláudia Alexandra de; Carvalho,João Luiz de Souza; Cunico,Miriam Machado; Lordello,Ana Luísa Lacava; Higaskino,Carmen Etsuko Kataoka; Almeida,Siumara Costa da Cruz; Dias,Josiane de Fátima Gaspari; Kerber,Vitor Alberto; Miguel,Marilis Dallarmi; Miguel,Obdúlio Gomes.
The extracts and fractions from the flowers of A. podalyriifolia were analyzed previously for antibacterial activity using diffusion in disk, Antioxidant properties were evaluated by determining radical scavenging power (DPPH test) and total phenol content was measured (Folin method). The present study describes the in vitro antibacterial (determining minimum inhibitory concentration) and antioxidant activities (by thiobarbituric acid reactive species - TBARS method) for the ethanol extract, dichloromethane and ethyl acetate fractions and two flavanones (naringenin and 5-β-D-glycosyl-naringenin) isolated from the flowers of Acacia podalyriifolia A. Cunn. ex G. Don. The flavanones naringenin and 5-β-D-glycosyl-naringenin had not previously been obtained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acacia podalyriifolia/qualitative analysis; Acacia podalyriifolia/phytochemistry; Acacia podalyriifolia/antibacterial activity; Acacia podalyriifolia/antioxidant properties; Flavanones; 5-β-D-glycosyl-naringenin; Naringenin.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502010000400013

A study of the phytotoxic effects of the aerial parts of Senecio westermanii Dusén (Asteraceae) on Lactuca sativa L. and Allium cepa L. seeds
Provedor de dados: 60
Autores: Merino,Francis José Zortéa; Ribas,Daniele Felipe; Silva,Cristiane Bezerra da; Duarte,Ana Flávia Schvabe; Paula,Cristiane da Silva; Oliveira,Maislian de; Dias,Josiane de Fátima Gaspari; Miguel,Marilis Dallarmi; Miguel,Obdulio Gomes.
The objective of this study was to evaluate the effects of the ethanolic crude extracts and fractions of the species Senecio westermanii Dusén on Lactuca sativa L. (lettuce) and Allium cepa L. (onion) seeds. We assessed the germination, growth, root respiration and photosynthesis of the target species in Petri dishes (9.0 cm diameter) containing filter paper n°6. The study was conducted using 50 seeds per plate and held in 4 replicates per concentration of each sample. In the germination there was an inhibitory effect of fractions hexane (FH) and chloroform (FCl) at concentrations of 500 and 1000 µg/mL. There was a reduction in the radicle growth of lettuce by 14 to 24% and a reduction of hypocotilum by 14 to 28%. As for the radicle of the onion was up 74%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Senecio westermanii/extract/effects; Lactuca sativa; Allium cepa; Allelochemicals; Allelopathy.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502018000300606

Phytochemical and morpho-anatomical study of the vegetative organs of Psychotria fractistipula L.B.Sm., R.M. Klein &amp;amp; Delprete (Rubiaceae)
Provedor de dados: 60
Autores: Oliveira,Camila Freitas de; Oliveira,Vinicius Bednarczuk; Bobek,Vanessa Barbosa; Rech,Katlin Suellen; Betim,Fernando Cesar Martins; Dias,Josiane de Fatima Gaspari; Zanin,Sandra Maria Warumby; Miguel,Obdulio Gomes; Miguel,Marilis Dallarmi.
Psychotria fractistipula L.B.Sm, R.M. Klein &amp; Delprete (Rubiaceae) is found in the existing Atlantic Forest in the South of Brazil, in the Paraná and Santa Catarina States. The members of Rubiaceae are characterized chemically by the presence of alkaloids, some pharmacological properties of which include antifungal, antibacterial, analgesic, antioxidant, antimutagenic, and antiviral activities. In this study, we report the results of anatomical, morphological, and histochemical analyses of the leaves and stems of the Rubiaceae family member, P. fractistipula. The anatomical analysis involved of light microscopy and scanning electron microscopy. Morpho-anatomical and histochemical characterization were made using standard methodology. The isolated...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psychotria; Morpho-anatomical; Phytochemistry.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100565