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Production of aromas and fragrances through microbial oxidation of monoterpenes
Aromas and fragrances can be obtained through the microbial oxidation of monoterpenes. Many microorganisms can be used to carry out extremely specific conversions using substrates of low commercialExpand
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Phytochemical and antioedematogenic studies of commercial copaiba oils available in Brazil
The composition of eight samples of commercial copaiba oils, used in the Amazonian region as antiinflammatory agents and available in popular markets, were analysed by gas chromatography/massExpand
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Separation of acid diterpenes of Copaifera cearensis huber ex ducke by flash chromatography using potassium hydroxide impregnated silica gel
O uso de cromatografia sob pressao ("flash chromatography") utilizando-se coluna de gel de silica impregnada com hidroxido de potassio levou ao fracionamento dos constituintes quimicos de CopaiferaExpand
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Evaluation of Antioxidant and Antimicrobial Activities and Characterization of Bioactive Components of Two Brazilian Propolis Samples Using a pKa-Guided Fractionation
The ethanolic extracts of two Brazilian propolis samples were submitted to a fractionation procedure based on the pKa values of their components. The fractions obtained were evaluated for theirExpand
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Controle de autenticidade de óleos de copaíba comerciais por cromatografia gasosa de alta resolução
Copaiba oil is a resin extracted from the trunk of trees of Copaifera species which grow in Brazil where it is widely used in popular medicine as an anti-inflammatory, antiseptic anti-bactericidal,Expand
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Angiogenic/lymphangiogenic factors and adaptation to extreme altitudes during an expedition to Mount Everest
Aim:  To analyse the correlation between production of angiogenic [vascular endothelial growth factor A (VEGF‐A) and interleukin 8 (IL‐8)] and lymphangiogenic factors (VEGF‐C and D) and adaptation toExpand
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Analysis of crude extracts and fractions of brazilian polypodiaceae by high‐resolution gas chromatography‐mass spectrometry. I. triterpenes
Characterization of individual components in plant extracts through classical phytochemical methods is a multi-step procedure which is both costly and time-consuming. Also significant amounts ofExpand
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Diterpenóides com esqueleto cleistantano de Vellozia aff. carunculares martius ex seubert (Velloziaceae)
From the hexane extract of leaves, stem and roots, of Vellozia aff. carunculares, fourteen cleistanthane diterpenoids were detected by HRGC-MS, through the analysis of their fragmentation patterns.Expand
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A bioactive seco-rosane diterpenoid from Vellozia candida.
Bioassay-directed fractionation of the bioactive alcoholic extracts of Vellozia candida yielded a new 6,7-seco-rosane diterpenoid, candidalactone (1), which showed moderate toxicity toward DNAExpand
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