Natural Antibiotic
Mostrando 13-24 de 214 artigos, teses e dissertações.
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13. Antibacterial, antifungal and cytotoxic activities exhibited by endophytic fungi from the Brazilian marine red alga Bostrychia tenella (Ceramiales)
Abstract Marine environment is one of the most important sources regarding natural products research. Besides, marine microorganisms have been denominated as a talented natural source for discovery of new leads. Although the association of macroalgae and fungi has been described regarding ecological issues, there is a lack of studies about marine seaweed end
Rev. bras. farmacogn.. Publicado em: 2015-12
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14. Volatile compounds of Lamiaceae exhibit a synergistic antibacterial activity with streptomycin
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 blo
Braz. J. Microbiol.. Publicado em: 2014-12
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15. Characterization of antibiotic resistance in Salmonella enterica isolates determined from ready-to-eat (RTE) salad vegetables
In the last decade, ready-to-eat (RTE) salad vegetables are gaining increasing importance in human diet. However, since they are consumed fresh, inadequate washing during processing can bring on some foodborne illnesses, like salmonellosis, since these food items have natural contamination from soil and water. During 2009-2010, a total of 81 samples were pur
Braz. J. Microbiol.. Publicado em: 30/08/2013
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16. Biomimetic oxidation studies of monensin A catalyzed by metalloporphyrins: identification of hydroxyl derivative product by electrospray tandem mass spectrometry
Monensin A is an important commercially available natural product isolated from Streptomyces cinnamonensins that shows antibiotic and anti-parasitic activities. This molecule has a significant influence in the antibiotic market, but until now there are no studies on putative metabolite formations. Bioorganic catalysts applying metalloporphyrins and mono-oxyg
Rev. bras. farmacogn.. Publicado em: 09/08/2013
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17. Desinfestação e estabelecimento in vitro de segmentos caulinares de camu-camuzeiro / Disinfestation and in vitro establishment of stem segments of camu-camu tree
The camu-camu tree (Myrciaria dubia (H.B.K.) McVaugh) is a fruit-bearing species belonging to the family Myrtaceae of spontaneous occurrence on the banks of rivers and lakes of Amazonia. It presents economic potential, since its fruits are thought the greatest natural source of vitamin C, bordering 6,112g of ascorbic acid per 100 g of pulp, arising commercia
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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18. Histopathological analysis of corticosteroid-antibiotic preparation and propolis paste formulation as intracanal medication after pulpectomy: an in vivo study
Intracanal medication in pulpectomy therapy is used between appointments with the objective of reducing pain and inflammatory processes in pulp and periapical tissues. Propolis has been known as a natural antibiotic and has been subject of medical and dental research due to its therapeutic properties such as antibiotic, analgesic and anti-inflammatory effect
Journal of Applied Oral Science. Publicado em: 2012-02
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19. Efeito da própolis sobre o crescimento de bacilos gramnegativos móveis coletados em hortifrutigranjeiro
Currently there is great concern about the quality and food contamination. All food marketed "in nature" may have some kind of contamination by microorganisms can be or not pathogenic for those who consume them. The contamination can occur throughout the production chain until it reaches the final consumer. In addition to the health problem, contamination ca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/07/2011
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20. Avaliação da ação de antibiótico natural na fermentação alcoólica contaminada por cultura mista
O etanol brasileiro vem despertando a atenção do mundo por ser uma fonte de energia renovável e economicamente viável. O Brasil tem a seu favor alguns pontos fundamentais, como clima, área de cultivo e tecnologia, capazes de fazer com que este biocombustível se torne um dos pilares do mercado nacional e internacional de combustíveis renováveis. Por i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/02/2011
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21. Phototoxic and modulatory effects of natural products from the skin of Rhinella jimi (Stevaux, 2002)
The skin of amphibians possesses a large diversity of biologically active compounds that are associated with the natural defenses of these animals against pathogens. Five different extracts and fractions were obtained from the skin of Rhinella jimi: methanol extract (ME), methanol fractions (MF), chloroform extract of methanol extract (CF), aqueous alkaloid
Revista Brasileira de Farmacognosia. Publicado em: 01/11/2011
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22. Quick adaptation of Ralstonia Solanacearum to copper stress to recover culturability and growth in water and soil
Cells of Ralstonia solanacearum were exposed to Cu in distilled water, and the resulting Cu-stressed non-culturable cells were inoculated to natural (non-pasteurized) and pasteurized soils in order to examine their culturability and recovery. Exposing the cells to 20 µM CuSO4 produced transitory non-culturable cells, which exhibited a remarkable recovery in
Brazilian Journal of Microbiology. Publicado em: 2011-06
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23. Antibiosis and antixenosis of six commonly produced potato cultivars to the green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae)
The antibiotic and antixenotic resistance of six commonly produced potato cultivars in Iran including Aozonia, Agria, Cosima, Cosmos, Kondor and Savalan to the green peach aphid, Myzus persicae Sulzer, were investigated under laboratory conditions at 20 ± 2ºC, 65 ± 5% RH and 16:8h (L:D) in 2009. Antibiosis experiments showed significant differences in the
Neotropical Entomology. Publicado em: 2011-06
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24. What are and where are the bioactive terpenoids metabolites from Dictyotaceae (Phaeophyceae)
Dictyotaceae are a rich source of secondary metabolites, especially terpenes. These natural products have been studied for their bioactivity for human and for their ecological role in nature. The present work highlights de diversity of the Dictyotaceae terpenes, emphasizing their bioactivities and the biogeography of their sources. The sesquiterpenes are fou
Revista Brasileira de Farmacognosia. Publicado em: 13/05/2011