Óleo essencial de Gochnatia polymorpha (Less) Cabr. ssp floccosa Cabr.

Stefanello, Maria Élida Alves; Cervi, Armando Carlos; Júnior, Alberto Wisniewski; Simionatto, Edésio Luiz

doi:10.1590/s0100-40422006000500021

Cited by 11 publications

(6 citation statements)

References 10 publications

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“…Diterpenos, triterpenos e cumarinas foram isolados das partes aéreas de um exemplar paraguaio da subespécie polymorpha (Catalan et al, 2003). Finalmente, fenilpropanóides, monoterpenos e sesquiterpenos foram identifi cados no óleo essencial das fl ores e raízes de um exemplar da subespécie fl occosa (Stefanello et al, 2006 …”

Section: Introductionunclassified

Avaliação da atividade antimicrobiana e citotóxica de extratos de Gochnatia polymorpha ssp floccosa

Stefanello¹,

Salvador²,

Ito³

et al. 2006

Rev. bras. farmacogn.

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RESUMO:Neste estudo procedeu-se a avaliação da atividade antimicrobiana e citotóxica de extratos de Gochnatia polymorpha ssp fl occosa, espécie empregada na medicina popular contra doenças respiratórias. Folhas, cascas do tronco e ramos foram extraídos com hexano, diclorometano e etanol, sucessivamente, sendo obtidos os respectivos extratos brutos. A atividade antimicrobiana foi determinada pelo método de difusão em ágar utilizando-se bactérias ABSTRACT: "Evaluation of antimicrobial and cytotoxic activitiy of extracts from Gochnatia polymorpha (Less) ssp fl occosa". The antimicrobial and cytotoxic activities of Gochnatia polymorpha ssp fl occosa, a medicinal plant used against respiratory diseases, were evaluated. Successive petroleum ether, dichloromethane and ethanol extracts of dried leaves, trunk bark and stems were used in the brine shrimp lethality bioassay and tested against 22 strains of microorganisms (Gram-positive and Gram-negative bacteria and fungi) by the well-diffusion agar method. None of the extracts showed cytotoxicity on the brine shrimp bioassay. The extracts of leaves showed a mild activity against some strains of Staphylococcus aureus and Streptococcus mutans. The ethanol extracts of trunk bark and dichloromethane extract of stems also showed activity against Micrococcus luteus, Staphylococcus aureus and S. epidermidis. The highest activity was found in the dichloromethane extract of trunk bark, which showed signifi cant antibacterial and antifungal activities against Micrococcus luteus, Staphylococcus aureus, S. epidermidis, Streptococcus mutans, Enterococcus faecalis and Candida albicans. Diterpenes are present in this extract and could be responsible for the activity. All the screened extracts were shown to be inactive (at 5.0 mg/mL) against strains of Gram-negative bacteria tested. These results indicate the potential of G. polymorpha ssp fl occosa as a source of antibacterial compounds and partly support the use of this plant in folk medicine.

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Section: Introductionunclassified

Avaliação da atividade antimicrobiana e citotóxica de extratos de Gochnatia polymorpha ssp floccosa

Stefanello¹,

Salvador²,

Ito³

et al. 2006

Rev. bras. farmacogn.

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“…The species selected for this study are abundant in the Cerrado and have biological activity (Barros et al 2006) or are used in popular medicine (Carvalho 2003;Stefanello et al 2006;Negrelle 2011;Santos et al 2012). Many medicinal plants have phytotoxic potential (Fujii et al 2003;Alves et al 2011;Silvestre et al 2013), indicating that these might be good candidates to be studied among the species that occur in the Cerrado.…”

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confidence: 99%

Seasonality affects phytotoxic potential of five native species of Neotropical savanna

Pinto

Kolb

2016

Botany

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Phytotoxic secondary metabolites produced by plants have been studied as possible sources of bioherbicides. However, several environmental factors can change the secondary metabolism of plants, and thus, the production of these compounds. Among these factors, seasonality can be a source of variation in the content of all classes of secondary metabolites. In this study, we evaluated the phytotoxic effect of aqueous extracts of leaves from Byrsonima intermedia A. Juss. (Malpighiaceae), Gochnatia polymorpha (Less.) Cabrera (Asteraceae), Luehea candicans Mart. (Tiliaceae), Miconia chamissois Naudin (Melastomataceae), and Qualea cordata Spreng (Vochysiaceae) (species of the Brazilian savanna), collected both during the dry and the rainy season, on germination and seedling growth of maize and cucumber. The analysed parameters were affected by all leaf extracts collected during both seasons. However, a greater phytotoxic effect was observed when leaves were collected during the dry or during the rainy season, depending on the savanna species studied, on the target species, and on the parameters evaluated. The phytochemical screening of all extracts was also evaluated and allowed the identification of anthraquinones, triterpenoids, saponins, and tannins. The composition of extracts differed between the seasons for all species. This study highlights the importance of considering savanna seasonality when studying the phytotoxicity of the species of this biome.

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“…At the fruit-bearing stages the relative area is very well divided between monoterpenes and sesquiterpenes, with high temperatures and less rain during the summer. The chemical variability can also be related to an adaptation of pollination from different species of insects, due to the reproductive strategy of the plant (Stefanello et al, 2006).…”

Section: Characterization Of the Essential Oilsmentioning

confidence: 99%

Gas Chromatography-Mass Spectrometry (GC-MS) and evaluation of antioxidant and antimicrobial activities of essential oil of Campomanesia adamantium (Cambess.) O. Berg (Guavira)

Coutinho

Cardoso

Ré-Poppi

et al. 2009

Braz. J. Pharm. Sci.

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The essential oils from Campomanesia adamantium (Cambess.) O. Berg leaves, collected in the reproductive (flowering and fruit-bearing) and vegetative stages, were characterized by GC-MS (Gas Chromatography-Mass Spectrometry). A total of 95 compounds of the essential oils were identified. In the reproductive stage (flowering) the major constituents were monoterpenes (limonene, α-pinene and β-pinene) while during the vegetative stage the major constituents were the sesquiterpenes (bicyclogermacrene and globulol). The essential oil of the reproductive stage shows high antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans, and all show moderate activity against Escherichia coli. The essential oils were also evaluated for their radicalscavenging activity by DPPH. The chemogeographical variations of the oil composition from the four distinct localities studied all contained α-pinene, β-pinene, limonene, linalool, β-caryophyllene, germacrene D and bicyclogermacrene, however the samples from Jardim city contained neither limonene nor linalool. Uniterms:Campomanesia adamantium/antioxidant activity. Campomanesia adamantium/antimicrobial activity. Guavira. Essential oil/caracterization.Os óleos essenciais obtidos das folhas de Campomanesia adamantium foram caracterizados através da combinação de CG-EM e índice de retenção, sendo identificado um total de 95 compostos. Na floração as substâncias majoritárias foram monoterpenos (limoneno, α-pineno e β-pineno) e durante o estágio vegetativo as substâncias majoritárias foram sesquiterpenos (biciclogermacreno e globulol). Os óleos essenciais obtidos da floração e frutificação mostraram alta atividade contra Staphylococcus aureus, Pseudomonas aeruginosa e Candida albicans e moderada contra Escherichia coli em todos os estágios. Foi avaliada a atividade antioxidante dos óleos essenciais usando o método do DPPH. O óleo essencial das 4 cidades mostrou a presença de α-pineno, β-pineno, limoneno, linalol, β-cariofileno, germacreno D e biciclogermacreno, mas a amostra da cidade de Jardim não apresentou limoneno e linalol.Unitermos: Campomanesia adamantium/atividade antioxidante. Campomanesia adamantium/atividade antimicrobiana. Guavira. Óleo essencial/caracterização.

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Óleo essencial de Gochnatia polymorpha (Less) Cabr. ssp floccosa Cabr.

Cited by 11 publications

References 10 publications

Avaliação da atividade antimicrobiana e citotóxica de extratos de Gochnatia polymorpha ssp floccosa

Avaliação da atividade antimicrobiana e citotóxica de extratos de Gochnatia polymorpha ssp floccosa

Seasonality affects phytotoxic potential of five native species of Neotropical savanna

Gas Chromatography-Mass Spectrometry (GC-MS) and evaluation of antioxidant and antimicrobial activities of essential oil of Campomanesia adamantium (Cambess.) O. Berg (Guavira)

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