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Bioassay guided purification of the antimicrobial fraction of a Brazilian propolis from Bahia state
(2009)
Abstract
Background
Brazilian propolis type 6 (Atlantic forest, Bahia) is distinct from the other types of propolis especially ...
Broad spectrum bioactive sunscreens
(ELSEVIER SCIENCE BV, 2008)
The development of sunscreens containing reduced concentration of chemical UV filters, even though, possessing broad spectrum effectiveness with the use of natural raw materials that improve and infer UV absorption is of ...
Antimicrobial activity of Rheedia brasiliensis and 7-epiclusianone against Streptococcus mutans
(ELSEVIER GMBH, URBAN & FISCHER VERLAG, 2008)
This in vitro study evaluated the antimicrobial activity of extracts obtained from Rheedia brasiliensis fruit (bacupari) and its bioactive compound against Streptococcus mutans. Hexane, ethyl-acetate and ethanolic extracts ...
Childhood and adolescent phenol and phthalate exposure and the age of menarche in Latina girls
(BIOMED Central Ltd., 2018)
Background: The age of menarche has been associated with metabolic and cardiovascular disease, as well as cancer risk. The decline in menarcheal age over the past century may be partially attributable to increased exposure ...
Dereplication of phenolic derivatives of qualea grandiflora and qualea cordata (vochysiaceae) using liquid chromatography coupled with ESI-QToF-MS/MS
(2013-06-20)
A rational and selective method using on-line high-performance liquid chromatography (HPLC) coupled with electrospray quadrupole time-of-flight tandem mass spectrometry (ESI-QToF-MS/MS) was established for the dereplication ...
UV filters in water samples: Experimental design on the SPE optimization followed by GC-MS/MS analysis
(2013-09-01)
Esse estudo descreve o desenvolvimento e otimização de um método de extração em fase solida (SPE) para análise dos filtros ultravioletas (UV): benzofenona-3 (BP-3), etilhexil salicilato (ES), etilhexil metoxinamato (EHMC) ...
A fast-multiclass method for the determination of 21 endocrine disruptors in human urine by using vortex-assisted dispersive liquid-liquid microextraction (VADLLME) and LC-MS/MS
(2020-10-01)
Simplicity, speed, and reduced cost are essential demands for routine analysis in human biomonitoring studies. Moreover, the availability of higher volumes of human specimens is becoming more restrictive due to ethical ...
Antimicrobial and antiproliferative activities of stingless bee Melipona scutellaris geopropolis
(2013-01-28)
Abstract
Background
Geopropolis is a type of propolis containing resin, wax, and soil, collected by threatened stingless bee species native to tropical countries and used in ...