| effect of apis mellifera propolis from two brazilian regions on caries development in desalivated rats. | the purpose of the present study was to evaluate the effect of apis mellifera propolis collected from two regions of brazil on caries development in desalivated rats. ethanolic extracts of propolis (eep) were prepared from crude propolis samples collected in minas gerais state (mg), southeastern brazil, and rio grande do sul state (rs), southern brazil. the flavonoid composition of eep was analyzed by high-performance thin-layer chromatography (hptlc) and reversed-phase high-performance liquid c ... | 1999 | 10460964 |
| effects of apis mellifera propolis on the activities of streptococcal glucosyltransferases in solution and adsorbed onto saliva-coated hydroxyapatite. | propolis, a resinous hive product collected by apis mellifera bees, has been used for thousands of years in folk medicine. ethanolic extracts of propolis (eep) have been shown to inhibit the activity of a mixture of crude glucosyltransferase (gtf) enzymes in solution. these enzymes synthesize glucans from sucrose, which are important for the formation of pathogenic dental plaque. in the present study, the effects of propolis from two different regions of brazil on the activity of separate, purif ... | 2000 | 11014909 |
| lupeol alkanoates in brazilian propolis. | high temperature high resolution gas chromatography coupled to mass spectrometry (ht-hrgc-ms) isa powerful analytical tool. in this work we applied this technique to the study of crude extracts of propolis collected near the city of uberlândia-minas gerais state. eucalyptus trees and native plants from "cerrado" (savannah) were the material sources disposable for the apis mellifera bees. a lot of known propolis constituents were identified, however, several high molecular weight compounds includ ... | 2002 | 12241003 |
| saprophytic fungus collection by africanized bees in brazil. | cladosporium sp. collection by bees (apis mellifera l.) was observed in brazil at an apiary located in minas gerais, during november 10-23, 2005, characterized by high air relative humidity and low availability of food resources (pollen and nectar).the nutritional composition of the fungi pellets presented high protein value, ethereal extract and organic matter. | 2009 | 19618064 |
| comparative pollen preferences by africanized honeybees apis mellifera l. of two colonies in pará de minas, minas gerais, brazil. | the aim of this study was to investigate the polliniferous floral sources used by apis mellifera (l.) (africanized) in an apiary situated in pará de minas, minas gerais state, and evaluate the pollen prefences among the beehives. two beehives of langstroth type with frontal pollen trap collectors were used. the harvest was made from september 2007 to march 2008, with three samples of pollen pellets colected per month per beehive. the subsamples of 2 grams each were prepared according to the euro ... | 2010 | 20563410 |
| pollen analysis of honey and pollen collected by apis mellifera linnaeus, 1758 (hymenoptera, apidae), in a mixed environment of eucalyptus plantation and native cerrado in southeastern brazil. | eucalyptus plantations are frequently used for the establishment of bee yards. this study was carried on at fazenda brejão, northwestern region of the state of minas gerais, brazil. this farm is covered both with native cerrado vegetation (brazilian savanna) and eucalyptus plantations. this paper reports on the botanic origin of pollen pellets and honey collected from honeybee (apis mellifera) hives along a thirteen-month period (january 2004 to january 2005). the most frequent pollen types foun ... | 2015 | 26628236 |
| potential pollinators of tomato, lycopersicon esculentum (solanaceae), in open crops and the effect of a solitary bee in fruit set and quality. | we identified native bees that are floral visitors and potential pollinators of tomato in cerrado areas, described the foraging behavior of these species, and verified the influence of the visitation of a solitary bee on the quantity and quality of fruits. three areas of tomato crops, located in minas gerais, brazil, were sampled between march and november 2012. we collected 185 bees belonging to 13 species. exomalopsis (exomalopsis) analis spinola, 1853 (hymenoptera: apidae) was the most abunda ... | 2014 | 25026657 |