Influência da variação sazonal nos teores de flavonóides e atividade antioxidante das folhas de Campomanesia adamantium (Cambess.) O. Berg, Myrtaceae

Coutinho, Isabel D.; Kataoka, Vanessa M. F.; Honda, Nobuaki; Coelho, Roberta Gomes; Vieira, M.C.; Cardoso, Cláudia Andréa Lima

doi:10.1590/s0102-695x2010000300006

Cited by 25 publications

(12 citation statements)

References 13 publications

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“…All compounds isolated from the BuOH phase (1-5) were subjected to evaluation of antiradical potential by spraying a solution of 2.0 mg/mL of DPPH in methanol in a TLC plate (SiO 2 ). After 5 minutes, were observed strong yellow spots on violet background, suggesting that compounds 1-5 are responsible for antiradical potential observed in the crude extract/phases, as previously reported (Coutinho et al, 2010;Ceruks et al, 2007;Rosa et al, 2010).…”

Section: Resultssupporting

confidence: 78%

Flavonoids and fatty acids of Camellia japonica leaves extract

Azuma¹,

Santos²,

Lago³

2011

Rev. bras. farmacogn.

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Abstract:The ethanol extract from the leaves of Camellia japonica L., Theaceae, showed antiradical potential in the DPPH test using TLC plates (SiO 2 ). Aiming the isolation of active compounds, this extract was partitioned between BuOH:H 2 O (1:1) and the two obtained phases were also evaluated to detection of antiradical activity. The active BuOH phase was fractionated in Sephadex LH-20 and silica (normal or reverse phase) to afford three aglycone flavonoids (quercetin, kaempferol and apigenin), which have been described in the C. japonica at first time, two glycosilated flavonoids (rutin and quercetrin), and a mixture of saturated fatty acids. The structures of isolated compounds were defined by NMR and GC/MS analyses.

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Section: Resultssupporting

confidence: 78%

Flavonoids and fatty acids of Camellia japonica leaves extract

Azuma¹,

Santos²,

Lago³

2011

Rev. bras. farmacogn.

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“…The Brazilian Cerrado is a source of reserve of biological resources that presents an economic potential and a large number of fruit species (Coutinho et al, 2010), among which the genus Campomanesia is worth mentioning because it has the potential for commercial exploitation (Freitas et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

“…This genus may be found in field and typical Cerrado landscapes (Coutinho et al, 2010) distributed in the Center-West and Southeast regions of Brazil (Lorenzi et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Genetic variability among genotypes of “gabirobeiras” selected for precocity

Santos¹,

Reis²,

Pinto³

et al. 2018

Científica

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Gabirobeira is a fruit tree native to the Brazilian Cerrado with a good productivity and acceptance by the local population and with good prospects for processing. Even with the growing interest in the industry and its potential use, information on gabirobas is limited. Therefore, the knowledge of the development, the characteristics of fruits and the genetic divergence is fundamental to define actions of domestication and adaptation to the productive system. The objective of this study is to determine the genetic variability of 173 genotypes of Gabirobeira from the Jataí-Goiás germplasm collection based on plant and fruit morphological traits. The evaluations were carried out in two periods, and eleven morphological traits were evaluated. Based on data, we performed statistical descriptive analysis, correlation analysis, estimation of relative importance of traits and cluster analysis using multivariate techniques (Tocher and UPGMA). The results showed variability and, among the genotypes studied, it was verified that the lowest and the highest CV (15.8% and 102.49%) were observed for fruit width and number of branches. The mean values obtained for soluble solids ranged from 6 to 26 ºBrix. The contribution of different traits assessed for variability ranged from 0.10 to 27.55%. The dissimilarity varied from 3.64 to 80.35, with an average of 23.083. Both grouping methods formed 18 groups. These results show that the germplasm collection presents variability, which can be used as a guide for its maintenance with the possibility of exploring this variability in future genetic improvement works.Additional keywords: Campomanesia; germplasm; multivariate techniques. ResumoA gabirobeira é uma fruteira nativa do Cerrado Brasileiro, com boa produtividade e aceitação pela população local e com boas perspectivas para processamento. Mesmo com o crescente interesse da indústria e seu potencial uso, as informações sobre as gabirobeiras são limitadas. Por isso, o conhecimento do desenvolvimento, das características dos frutos e da divergência genética é fundamental para definir ações de domesticação e adequação ao sistema produtivo. Neste estudo, objetivou-se determinar a variabilidade genética de 173 genótipos de gabirobeira da coleção de germoplasma de Jataí-Goiás, com base em caracteres morfológicos da planta e dos frutos. As avaliações foram realizadas em duas épocas e foram avaliados onze caracteres morfológicos. Com base nos dados, realizaram-se a análise estatística descritiva, correlação, estimação da importância relativa dos caracteres e análise de agrupamento, por meio de técnicas multivariadas (Tocher e UPGMA). Os resultados evidenciam existência de variabilidade e, entre os genótipos em estudo, verificou-se que o menor e o maior CV (15,8%, 102,49%) foram observados para a largura do fruto e o número de ramificações. Os valores médios obtidos de sólidos solúveis variaram de 6 a 26 o Brix. A contribuição de diferentes caracteres avaliados para a variabilidade variou de 0,10 a 27,55%. Já a dissimilaridade var...

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“…During flowering, the major substances found were monoterpenes (limonene, α-pinene, and β-pinene), while during the vegetative state, the predominant substances were sesquiterpenes (bicyclogermacrene and globulol). When hexane and ethyl acetate extracts from C. adamantium leaves were evaluated, little variation was observed between their chemical compositions during plant development in different seasons, whereas the alcoholic extract had a significantly altered chemical composition (COUTINHO et al, 2010). When the biological activities of these organic extracts from C. adamantium were evaluated, they showed promising cytotoxic and antioxidant activities (RAMOS et al, 2007).…”

Section: Introductionmentioning

confidence: 99%