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| Registros recuperados: 28 | |
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| Cruz,Carolinie Batista Nobre da; Pieri,Fabio Alessandro; Carvalho-Zilse,Gislene Almeida; Orlandi,Patrícia Puccinelli; Nunes-Silva,Carlos Gustavo; Leomil,Luciana. |
| Honeys are described possessing different properties including antimicrobial. Many studies have presented this activity of honeys produced by Apis mellifera bees, however studies including activities of stingless bees honeys are scarce. The aim of this study was to compare the antimicrobial activity of honeys collected in the Amazonas State from Melipona compressipes, Melipona seminigra and Apis mellifera against Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Chromobacterium violaceum, and Candida albicans. Minimum inhibitory concentrations were determined using the agar dilution method with Müller-Hinton agar (for bacteria) or Saboraud agar (for yeast). Staphylococcus aureus and E. faecalis were inhibited by all honeys at concentrations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Melipona; Antibacterial; Antifungal; Natural products; Functional food. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672014000200015 |
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| Silva,Saulo L. da; Oliveira,Viviane Guedes de; Yano,Tomomasa; Nunomura,Rita de Cássia Saraiva. |
| Endopleura uchi (Huber) Cuatrec. is an Amazon species traditionally used as treatment for inflammations and female disorders. Bergenin was isolated from ethyl acetate fraction of bark of E. uchi by using column chromatography over sephadex LH-20 and then silica gel 60 flash. Its structure was identified on the basis of its NMR spectra. The antimicrobial activity of bergenin and fractions of methanol extract of E. uchi were evaluated against ATCC microorganisms (Escherichia coli, Salmonella enteritidis, Pseudomonas aeruginosa, Enterococcus faecalis, Staphylococcus aureus, Candida albicans, C. guilliermondii, Aspergillus flavus, A. nidulans). Clinically isolated strains of all of these microorganisms, along with C. tropicalis, A. niger, Shigella sonnei,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Antifungal; Candida; Humiriaceae; Uxi-amarelo. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672009000100019 |
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| ASSIS,FELIPE V. DE; SIQUEIRA,FLÁVIA L.; GONÇALVES,ISABELA E.; LACERDA,RAFAEL P.; NASCIMENTO,RAFAELA A.; ARAÚJO,STHÉFANE G.; ANDRADE,JÉSSICA T.; HERRERA,KARINA M.S.; LIMA,LUCIANA A.R.S.; FERREIRA,JAQUELINE M.S.. |
| ABSTRACT The antibacterial activity of plant extracts of the Lamiaceae family was evaluated against clinical isolates of multi-resistant Gram-negative bacteria by broth microdilution technique. Promising results were obtained considering that all extracts were active for at least two bacterial species with MIC ranging from 0.5 to 2.0 mg/mL. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Clinical isolates; Lamiaceae extracts; Multidrug-resistant. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401665 |
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| J. SIMÃO,MARIELA; J.S. BARBOZA,THIAGO; G. VIANNA,MARCELA; GARCIA,RENATA; MANSUR,ELISABETH; P.R. IGNACIO,ANA CLAUDIA; PACHECO,GEORGIA. |
| Abstract Passiflora species are well known for their common use in popular medicine for the treatment of several diseases, such as insomnia, anxiety, and hysteria, in addition to their anti-inflammatory, antioxidant, analgesic and antibacterial potential. However, few data about the chemical composition and the medicinal potential of in vitro derived materials are available. Therefore, the goal of this work was to compare, for the first time, the phytoconstituents of in vitro derived materials of four Passiflora species, and evaluate the antibacterial potential of their extracts against 20 Gram-positive and negative strains. Chromatographic analysis indicated the presence of saponins in roots extracts from all studied species, whereas leaf extracts... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Chromatography; Flavonoids; Passiflora; Saponins. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000602805 |
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| SANTOS,TÁSSIA L.A. DOS; QUEIROZ,RAPHAEL F.; SAWAYA,ALEXANDRA C.H.F.; LOPEZ,BEGOÑA GIMENEZ-CASSINA; SOARES,MILENA B.P.; BEZERRA,DANIEL P.; RODRIGUES,ANA CAROLINA B.C.; PAULA,VANDERLÚCIA F. DE; WALDSCHMIDT,ANA MARIA. |
| ABSTRACT Geopropolis is a special type of propolis produced by stingless bees. Several pharmacological properties have been described for different types of geopropolis, but there have been no previous studies of the geopropolis from Melipona mondury. In this study, we investigated the antioxidant, antibacterial, and antiproliferative activities of M. mondury geopropolis, and determined its chemical profile. The antioxidant activity was determined using in vitro ABTS·+, ·DPPH, and β-carotene/linoleic acid co-oxidation methods. The antibacterial activity was determined using a microdilution method with Pseudomonas aeruginosa, Staphylococcus aureus, and methicillin-resistant S. aureus. The antiproliferative effect was determined in tumor cell lines using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Antioxidant; Antiproliferative; Geopropolis; Melipona mondury. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502247 |
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| RÍOS-CHÁVEZ,PATRICIA; PEREZ-GONZALEZ,JORDY; SALGADO-GARCIGLIA,RAFAEL; RAMÍREZ-CHÁVEZ,ENRIQUE; MOLINA-TORRES,JORGE; MARTINEZ-TRUJILLO,MIGUEL; CARREON-ABUD,YAZMIN. |
| Abstract: This study evaluates the antibacterial, cytotoxic activities, and phytochemical composition, of Callistemon citrinus, Hibiscus rosa-sinensis and Plumbago auriculata leaves and flowers, three ornamental plants in Mexico. However, in other countries offers a range of other uses. Ethanol extracts of C. citrinus leaf and flower presented stronger antibacterial activity than the extracts obtained from the other two plants. C. citrinus leaf showed low cytotoxicity (LC50 <600 µg/mL) on the brine shrimp test, whereas the ethanol extracts of H. rosa-sinensis and P. auriculata leaves showed no cytotoxic activity. Flower extracts obtained from the three plants did no exhibit cytotoxicity. GC-MS analysis revealed that the ethanol extract of P. auriculata... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Artemia salina; Callistemon citrinus; Cytotoxic; Lupeol. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300611 |
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| PINTO,NÍCOLAS C.C.; SILVA,JUCÉLIA B.; MENEGATI,LAURA M.; GUEDES,MARIA CLARA M.R.; MARQUES,LUCAS B.; SILVA,THIAGO P. DA; MELO,ROSSANA C.N. DE; SOUZA-FAGUNDES,ELAINE M. DE; SALVADOR,MARCOS J.; SCIO,ELITA; FABRI,RODRIGO L.. |
| ABSTRACT This study aimed to further investigate the cytotoxicity against tumor cell lines and several bacterial strains of Annona squamosa and its mode of action. Methanol extracts of A. squamosa leaves (ASL) and seeds (ASS) were used. ASL showed significant antibacterial activity against S. aureus, K. pneumoniae and E. faecalis with MIC values of 78, 78 and 39 µg/mL respectively. Moreover, ASL exhibited significant biofilm disruption, rapid time dependent kinetics of bacterial killing, increased membrane permeability and significantly reduced the cell numbers and viability. Regarding the cytotoxicity against tumor cell lines, ASS was more active against Jurkat and MCF-7 cells, with CI50 1.1 and 2.1 µg/mL, respectively. ASL showed promising activity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alkaloids; Annona squamosa; Antibacterial; Citotoxicity; Herbal medicine. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502053 |
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| Pieri,F.A.; Silva,V.O.; Souza,C.F.; Costa,J.C.M.; Santos,L.F.; Moreira,M.A.S.. |
| O objetivo deste estudo foi identificar a atividade inibitória de óleos de copaíba sobre o crescimento dos micro-organismos: Shigella flexneri, Klebsiella pneumoniae, Escherichia coli, Proteus mirabilis, Pseudomonas aeruginosa, Citrobacter freundi, Staphylococcus aureus, Actinobacillus pleuropneumoniae e Haemophilus parasuis. Foi realizado um teste de difusão em ágar com duas soluções a 10% de óleos de copaíba obtidos de duas diferentes espécies de copaíba (Copaifera officinalis e C. langsdorffii) e um controle negativo com tween 80 e água. Os isolados clínicos de H. parasuis e A. pleuropneumoniae foram incubados em microaerofilia. Os resultados mostraram três espécies Gram-negativas inibidas por ambas as soluções de óleo de copaíba: E. coli, P. aeruginosa... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytotherapics; Antimicrobial; Antibacterial; Copaifera. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352012000100037 |
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| Paudel,Babita; Datta Bhattarai,Hari; Prasad Pandey,Durga; Seoun Hur,Jae; Gyu Hong,Soon; Kim,Il-Chan; Han Yim,Joung. |
| A total of twenty four lichen species belonging to six families were collected from mountainous region of Nepal. The methanol extracts of each species were tested for antimicrobial and antioxidant activitiesin vitro. It was found that extracts of twenty one lichen species were active againstB. subtilis and seven species were active againstS. aureus. Similarly, in DPPH assay, three speciesPeltigera sp.,Cladonia sp., andCanoparmelia sp. showed comparable activity with commercial standard, BHA. In ABTS+ assay, extracts ofParmoterma sp.,Ramalina sp.,Peltigera sp. andCladonia sp. showed stronger activity than ascorbic acid. The observed data after comparison with previously published reports indicated that the high altitude lichens contain stronger antioxidant... |
| Tipo: Journal article |
Palavras-chave: Antibacterial; Antioxidant; Nepal lichens; Free radicals. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602012000400010 |
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| Challouf,Rafika; Trabelsi,Lamia; Ben Dhieb,Rym; El Abed,Omeya; Yahia,Ali; Ghozzi,Khamissa; Ben Ammar,Jihen; Omran,Hela; Ben Ouada,Hatem. |
| The aim of this work was to evaluate the cytotoxicity of Arthrospira platensis Extracellular Polymeric Substances (EPS) for colon cancer and kidney cell lines. Results showed that EPS were free from cytotoxic effects. A variety of solvents were assessed for their ability to extract the bioactive ingredients from EPS. Methanol gave the highest yield (75.75%) than other solvents. The extracts were tested for activities against a collection of Gram+/- bacteria. The methanol extract exhibited a more potent activity than the other organic extracts, whereas the aqueous extract was active against Staphylococcus epidermis (Gram+) and Salmonella typhimurium (Gram-). Finally, The extracts were also tested for the antioxidant activity, using the Trolox Equivalent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanobacteria; Exoplysaccharides; Cytotoxicity; Antibacterial; Antioxidant; Activity. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400024 |
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| Zmantar,Tarek; Ben Slama,Rihab; Fdhila,Kais; Kouidhi,Bochra; Bakhrouf,Amina; Chaieb,Kamel. |
| Abstract Objectives: This study aims to investigate the antimicrobial and the anti-biofilm activities of Lactobacillus plantarum extract (LPE) against a panel of oral Staphylococcus aureus (n = 9) and S. aureus ATCC 25923. The in vitro ability of LPE to modulate bacterial resistance to tetracycline, benzalchonium chloride, and chlorhexidine were tested also. Methods: The minimum inhibitory concentrations (MICs) and the minimal bactericidal concentrations of Lactobacillus plantarum extract, tetracycline, benzalchonium chloride and clohrhexidine were determined in absence and in presence of a sub-MIC doses of LPE (1/2 MIC). In addition, the LPE potential to inhibit biofilm formation was assessed by microtiter plate and atomic force microscopy assays.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Staphylococcus aureus; Biofilm; Antibiotics; Synergetic; Lactobacillus. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000100027 |
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| Violante,Ivana Maria Póvoa; Hamerski,Lidilhone; Garcez,Walmir Silva; Batista,Ana Lucia; Chang,Marilene Rodrigues; Pott,Vali Joana; Garcez,Fernanda Rodrigues. |
| Ethanol extracts from six selected species from the Cerrado of the Central-Western region of Brazil, which are used in traditional medicine for the treatment of infectious diseases and other medical conditions, namely Erythroxylum suberosum St. Hil. (Erythroxylaceae), Hyptis crenata Pohl. ex Benth. (Lamiaceae), Roupala brasiliensis Klotz. (Proteaceae), Simarouba versicolor St. Hil. (Simaroubaceae), Guazuma ulmifolia Lam. (Sterculiaceae) and Protium heptaphyllum (Aubl.) March. (Burseraceae), as well as fractions resulting from partition of these crude extracts, were screened in vitro for their antifungal and antibacterial properties. The antimicrobial activities were assessed by the broth microdilution assay against six control fungal strains, Candida... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antifungal; Antibacterial; Antimicrobial; Artemia salina; Cerrado. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400009 |
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| Araújo,Sthéfane G.; Alves,Lucas F.; Pinto,Maria Eduarda A.; Oliveira,Graziela T.; Siqueira,Ezequias P.; Ribeiro,Rosy I. M. A.; Ferreira,Jaqueline M. S.; Lima,Luciana A. R. S.. |
| Bacterial infections cause thousands of deaths in the world every year. In most cases, infections are more serious because the patient is already weakened, and often, the bacteria are already resistant to the antibiotics used. Counterparting this negative scenario, the interest in medicinal plants as an alternative to the synthetic antimicrobial drugs is blossoming worldwide. In the present work, we identified the volatile compounds of ethanol extracts of Melissa officinalis, Mentha sp., Ocimum basilicum, Plectranthus barbatus, and Rosmarinus officinalis by gas chromatography/mass spectrometry (GC/MS). Also was evaluated antimicrobial activity of ethanol extracts against 6 bacteria of clinical interest, and was tested the interaction of these extracts with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lamiaceae; Antibacterial; Ethanol extracts; Volatile compounds; Streptomycin. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000400026 |
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| Choi,Young-Suk; Kim,Cheul; Moon,Ji-Hoi; Lee,Jin-Yong. |
| ABSTRACT Removal of bacterial biofilm from the root canal system is essential for the management of endodontic disease. Here we evaluated the antibacterial effect of N-acetylcysteine (NAC), a potent antioxidant and mucolytic agent, against mature multispecies endodontic biofilms consisting of Actinomyces naeslundii, Lactobacillus salivarius, Streptococcus mutans and Enterococcus faecalis on sterile human dentin blocks. The biofilms were exposed to NAC (25, 50 and 100 mg/mL), saturated calcium hydroxide or 2% chlorhexidine solution for 7 days, then examined by scanning electron microscopy. The biofilm viability was measured by viable cell counts and ATP-bioluminescence assay. NAC showed greater efficacy in biofilm cell removal and killing than the other... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial; Biofilm removal; Multispecies endodontic biofilm; N-acetylcysteine; Root canal medicament. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000100184 |
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| 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 |
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| Saleem,Afia; Bukhari,Syed Majid; Zaidi,Asma; Farooq,Umar; Ali,Majid; Khan,Asma; Khan,Sidra; Shah,Kausar Hussain; Mahmood,Adeem; Khan,Farhan Ahmed. |
| The 4-Hydroxycoumarin derivatives are known to show a broad spectrum of pharmacological applications. In this paper we are reporting the synthesis of a new series of 4-Hydroxycoumarin derivatives synthesized through Knovenegal condensation; they were characterized by using UV-Vis, FT-IR, NMR spectroscopies. The synthesized compounds were evaluated for antibacterial activity against Staphylococcus aureus and Salmonella typhimurium strains. The compounds (2), (3) and (8) showed favorable antibacterial activity with zone of inhibitions 26.5± 0.84, 26.0 ± 0.56 and 26.0 ± 0.26 against Staphylococcus aureus (Gram-positive) respectively. However, the compounds (5) and (9) were found more active with 19.5 ± 0.59 and 19.5 ± 0.32 zone of inhibitions against... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 4-Hydroxycoumarin; Anti-urease; Carbonic anhydrase; Aldehydes; Antibacterial. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502020000100580 |
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| Registros recuperados: 28 | |
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