screening of antibacterial extracts from plants native to the brazilian amazon rain forest and atlantic forest. | more than 20% of the world's biodiversity is located in brazilian forests and only a few plant extracts have been evaluated for potential antibacterial activity. in the present study, 705 organic and aqueous extracts of plants obtained from different amazon rain forest and atlantic forest plants were screened for antibacterial activity at 100 microg/ml, using a microdilution broth assay against staphylococcus aureus, enterococcus faecalis, pseudomonas aeruginosa and escherichia coli. one extract ... | 2004 | 15060707 |
antibacterial activity of brazilian amazon plant extracts. | infections caused by multiresistant bacteria are a widespread problem, especially in intensive care units. new antibiotics are necessary, and we need to search for alternatives, including natural products. brazil is one of the hottest spots in the world in terms of biodiversity, but little is known about the chemical and pharmacological properties of most of the plants found in the amazon rain forest and the atlantic forest. we screened 1,220 organic and aqueous extracts, obtained from amazon an ... | 2006 | 17420913 |
endophytic fungi from myrcia guianensis at the brazilian amazon: distribution and bioactivity. | beneficial interactions between plants and microorganisms have been investigated under different ecological, physiological, biochemical, and genetic aspects. however, the systematic exploration of biomolecules with potential for biotechnological products from this interaction still is relatively scarce. therefore, this study aimed the evaluation of the diversity and antimicrobial activity of the endophytic fungi obtained from roots, stems and leafs of myrcia guianensis (myrtaceae) from the brazi ... | 2014 | 24948926 |
in vitro activity of amazon plant extracts against enterococcus faecalis. | previous studies analyzing 2,200 plant extracts indicated anti-enterococcal activity in 25 extracts obtained from brazilian forests' plants. in the present study, these extracts were subjected to microdilution broth assay (mdba) and disk diffusion assay (dda) using planktonic enterococcus faecalis atcc(®) 29212™ and were submitted to phytochemical analysis in tlc and hplc. three extracts obtained from ipomoea alba (mic < 40 μg/ml), diclinanona calycina (mic ≤ 40 μg/ml) and moronobea coccinea (40 ... | 2014 | 25477906 |
chemical composition and antimicrobial activity of the essential oil of lippia grandis schauer (verbenaceae) from the western amazon. | lippia grandis schauer is an aromatic plant that has been used as a spice in brazilian culinary and in traditional medicine to treat liver disease, disorders of the stomach and throat infections. we determined the chemical composition of the essential oil of l. grandis and evaluated its potential for the treatment of clinically-important pathogenic micro-organisms. the essential oil was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (gc-ms), giving carvacrol ( ... | 2012 | 25005969 |