Effect of Ursolic Acid from Epicuticular Waxes of Jacaranda decurrens on Schizaphis graminum

Varanda, Elenice Mouro; Zúñiga, Gustavo E.; Salatino, Antônio; Roque, Nı́dia Franca; Corcuera, Luís J.

doi:10.1021/np50084a015

Cited by 35 publications

(24 citation statements)

References 4 publications

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“…Triterpenoids have generally been regarded as low efficient anti-transpiring barriers (Grncarevic and Radler, 1967;Holloway, 1969). On the other hand, they may exhibit pronounced anti-herbivore activ ity (Varanda et al, 1992;Kombargi et al, 1998;Sa latino et al, 1998). Xerophytes from other ecosys tems are also known to possess pentacyclic triterpenoids with anti-herbivore activity (Heinzen and Moyna, 1993).…”

Section: Resultsmentioning

confidence: 99%

Major Constituents of the Foliar Epicuticular Waxes of Species from the Caatinga and Cerrado

Oliveira

Salatino

2000

Zeitschrift Für Naturforschung C

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The epicuticular waxes of leaves of four species (Aspidospermci pyrifolium, Capparis yco, Maytenus rigida and Ziziphus joazeiro) from the Caatinga, (a semi-arid ecosystem of N orth east Brazil) and four species (Aristolochia esperanzae, Didymopanax vinosum , Strychnos pseudoquina and Tocoyena formosa) from the Cerrado, (a savanna ecosystem covering one third of the Brazilian territory), were analyzed. Six species contained a high content (above 60 (.ig.cm-2) of wax, four of them from the Caatinga. Triterpenoids and rc-alkanes were the most frequent and abundant constituents found in the species from both habitats. The distri bution of «-alkanes predom inated by homologues with 27, 29, 31 and 33 carbon atoms, dis played no consistent differences between species from the two habitats. Lupeol, ß-amyrin, epifriedelinol and ursolic acid were the triterpenoids found. Triterpenoids clearly predomi nate over alkanes in the waxes from the Cerrado species. The waxes of two evergreen species from the Caatinga yielded «-alkanes as predominant constituents. A comparison of foliar epicuticular waxes of native plants from ecosystems with different hydric constraints is dis cussed.

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Section: Resultsmentioning

confidence: 99%

Major Constituents of the Foliar Epicuticular Waxes of Species from the Caatinga and Cerrado

Oliveira

Salatino

2000

Zeitschrift Für Naturforschung C

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“…It has been speculated that the frequent prevalence of triterpenoids in the foliar waxes of cerrado plants may be a feature selected for its value as protection against the pressure of biotic agents (insect herbivory, for example) rather than as anti-transpiring agents (Salatino et al 1998, Oliveira andSalatino 2000). Evidence that wax triterpenoids from cerrado species may act as protection against herbivore has been shown (Varanda et al 1992, Salatino et al 1998). …”

Section: Ecological Considerationsmentioning

confidence: 99%

Epicuticular waxes from caatinga and cerrado species and their efficiency against water loss

Oliveira

Meirelles

Salatino

2003

An. Acad. Bras. Ciênc.

100

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The effects of the contents and chemical composition of the foliar epicuticular waxes of species from the caatinga (Aspidosperma pyrifolium, Capparis yco, Maytenus rigida and Ziziphus joazeiro) and cerrado (Aristolochia esperanzae, Didymopanax vinosum, Strychnos pseudoquina and Tocoyena formosa) were evaluated as to the resistance to water loss by means of an experimental device constructed for this purpose. In general, the waxes of the caatinga species investigated were more efficient against water loss than cerrado species. Increase of the thickness of the waxy deposits from 40 to 90µ g.cm −2 had no significant effect on the resistance to water loss. The chemistry of the wax constituents was shown to be an important factor to determine the degree of resistance to evaporation. n-Alkanes and alcoholic triterpenes were the most efficient barriers, while hentriacontan-16-one (a ketone) and ursolic acid (an acid triterpene) revealed low efficiency. The higher efficiency of the waxes of the leaves from caatinga species (mainly those of C. yco and Z. joazeiro) is probably accounted for the predominance of n-alkanes in their composition. The lower efficiency of the waxes of A. pyrifolium (caatinga), T. formosa and A. esperanzae (both species from the cerrado) is probably a consequence of the predominance of triterpenoids in the waxes of the two former species and hentriacontan-16-one in the latter.

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“…é uma espécie endêmica do Cerrado, pertencente à família Bignoniaceae, encontrada nos estados de Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais e São Paulo (Mauro et. al., 2007;Varanda et al, 1992). Tintura de raiz de J. decurrens é amplamente utilizada pela população como depurativo do sangue e também recomendada para o tratamento das afecções cutâneas e úlceras externas (Rodrigues & Carvalho, 2001).…”

Section: Introductionunclassified

Atividade antioxidante de Jacaranda decurrens Cham., Bignoniaceae

Carvalho

Lourenço

Bertoni

et al. 2009

Rev. bras. farmacogn.

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RESUMO:Muitas doenças e processos degenerativos estão associados à superprodução de espécies reativas de oxigênio (ERO) o que tem estimulado vários grupos de pesquisa a investigarem o potencial antioxidante de substâncias produzidas por diversas famílias da flora mundial. O presente trabalho teve como objetivo avaliar a atividade antioxidante de extrato bruto hidroalcoólico de folhas de Jacaranda decurrrens e de frações obtidas a partir desse extrato, pelo método espectrométrico de descoloração do radical 2,2-difenil-1-picrilhidrazila (DPPH). A atividade antioxidante (91%) do extrato bruto e da fração Jd-2 foi semelhante à atividade obtida com o padrão rutina, na concentração de 1 mg/L (92,56%). A fração Jd-3 quando comparada com as outras frações apresentou maior atividade antioxidante em concentrações igual ou abaixo de 2,5 mg/L. A atividade antioxidante das amostras está relacionada à presença dos triterpenos ácidos ursólico e oleanólico presentes no extrato bruto e nas frações Jd-1 e Jd-2 e também a flavonóides glicosilados contidos na fração Jd-3. Este é o primeiro trabalho demonstrando a atividade antioxidante de extrato de folhas de Jacaranda decurrens.Unitermos: Jacaranda decurrens, Bignoniaceae, planta medicinal, cerrado, antioxidante.ABSTRACT: "Antioxidant activity of Jacaranda decurrens Cham., Bignoniaceae". Since many diseases and degenerative processes have been associated to the overproduction of reactive oxygen species (ROS) many research groups are motivated to investigate the antioxidant potential of substances produced by several families of the world flora. The aim of this work was to evaluate the antioxidant activity of crude hydroalcoholic extract of Jacaranda decurrrens leaves and fractions obtained from that extract, using the free radical DPPH (2,2-difenyl-1-picrylhydrazyl) through spectrometric discoloration method. Results confirmed that either the crude extract or fractions of the extract presented antioxidant activity. The antioxidant activity (91%) demonstrated by the crude extract was equivalent to the antioxidant activity determined for fraction Jd-2 in the concentration of 10 mg/L, and similar to the activity showed by the standard rutin, in the concentration of 1 mg/L (92,56%). Fraction Jd-1 in the concentration of 10 mg/L and 5 mg showed 84% and 86% antioxidant activity, respectively. Those values are significantly different and inferior if compared to the standard rutin. Compared to the other fractions the Jd-3 presented higher antioxidant activity. The antioxidant potential of Jacaranda decurrens crude extracts and fractions Jd-1 and Jd-2 is probably related to the production of the triterpenes ursolic and oleanolic acids and also to the glycosylated flavonoids produced in the fraction Jd-3. This is the first report on the antioxidant activity of crude hydroalcoholic extract of J. decurrrens leaves and fractions obtained from that extract.

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Effect of Ursolic Acid from Epicuticular Waxes of Jacaranda decurrens on Schizaphis graminum

Cited by 35 publications

References 4 publications

Major Constituents of the Foliar Epicuticular Waxes of Species from the Caatinga and Cerrado

Major Constituents of the Foliar Epicuticular Waxes of Species from the Caatinga and Cerrado

Epicuticular waxes from caatinga and cerrado species and their efficiency against water loss

Atividade antioxidante de Jacaranda decurrens Cham., Bignoniaceae

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