Phenolic compounds in seven South American Ilex species

Filip, Roxana; López, Paula; Giberti, Gustavo C.; Coussio, J.; Ferraro, Graciela

doi:10.1016/s0367-326x(01)00331-8

Cited by 259 publications

(254 citation statements)

References 4 publications

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“…Matsubara (2001) detected quercetin in amounts comparables to those present in black and green tea and smaller amounts of kaempferol in commercial yerba maté samples from Campinas, Brazil but did not detect myricetin. The presence of flavonols in mate leaves was described by Filip et al (2001). A linear relationship between the 5-cqa and caffeine content of chimarrão and the soluble solids content was observed (r = 0.95 for 5-cqa and r=0.89 for caffeine) (Fig.…”

Section: Resultsmentioning

confidence: 89%

Bioactive compounds content of chimarrão infusions related to the moisture of yerba maté (Ilex Paraguariensis) leaves

Bastos

Fornari

Queiroz

et al. 2006

Braz. arch. biol. technol.

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Section: Resultsmentioning

confidence: 89%

Bioactive compounds content of chimarrão infusions related to the moisture of yerba maté (Ilex Paraguariensis) leaves

Bastos

Fornari

Queiroz

et al. 2006

Braz. arch. biol. technol.

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“…For quantifi cation of rutin, quercetin, kaempferol and naringin, solvent A contained methanol with 2% acetic acid and solvent B Milli-Q water with 2% acetic acid, total analysis time, 60 min, detection at 350 nm. The method of alkaloids system was gradient elution reversed-phase column: RP18, detection: 280 nm, flow: 1 mL/minute, analysis time: 45 min and column temperature: 25 °C (Fillip et al 2001). For quantifi cation of resveratrol, solvent A contained water with pH 2.5; solvent B, methanol; gradient of 90% solvent A and 10% solvent B to 100% solvent B; total analysis time of 45 min, with detection at 313 nm (Ector et al 1996).…”

Section: Phenolic Compoundsmentioning

confidence: 99%

Evaluation of antioxidant activity of grapevine leaves extracts (Vitis labrusca) in liver of Wistar rats

Schaffer

Wohlenberg

Medeiros

et al. 2016

An. Acad. Bras. Ciênc.

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The aim of this study was to evaluate the hepatoprotection of organic and conventional grapevine leaves extract (Vitis labrusca). The total polyphenol content and the isolate polyphenols by HPLC were evaluate. The animals received intraperitoneal injections of saline or extracts (conventional or organic -30 mg/kg) for 14 days. On day 15, the rats received carbon tetrachloride (CCl 4 ) or mineral oil (i.p.). After 4h, the animals were euthanized. The analysis of the liver enzymes activity (AST, ALT, GGT) was performed using serum, obtained by blood and the levels of lipid peroxidation (TBARS), protein oxidation (carbonyl), and the activity of antioxidant enzymes superoxide dismutase and catalase were analyzed in the liver. The results showed that the organic extract is richer in polyphenol and resveratrol than the conventional one. Both extracts prevent lipid peroxidation and protein oxidation generated by CCl 4 . Moreover, the extracts demonstrated ability to modulate the activity of SOD and CAT, as well as to establish a balance in the ratio of SOD/CAT. We also found that the CCl 4 increased the levels of AST and GGT, and that both extracts prevent this. These results indicate that grapevine leaves extracts, both, organic and conventional, can prevent liver disorders.

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“…A Ilex paraguariensis possui maiores concentrações dos derivados de cafeoil, como o ácido clorogênico e o ácido caféico, e de flavonoides, como a rutina e a quercetina, quando comparada com outras espécies do gênero Ilex (17) . O ácido caféico presente na erva-mate, juntamente com os flavonoides, apresenta atividade antimicrobiana frente a bactérias, fungos e vírus (5,18) .…”

Section: Introductionunclassified

ATIVIDADE ANTIMICROBIANA DA ERVA-MATE (Ilex paraguariensis) CONTRA MICRORGANISMOS ISOLADOS DA CARNE DE FRANGO

2017

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ResumoA erva-mate vem sendo estudada devido às diversas atividades biológicas já evidenciadas. Este estudo teve como objetivo avaliar o efeito antimicrobiano, pelo método de difusão em disco, da adição de extratos de erva-mate frente à Escherichia coli e ao Proteus mirabilis previamente isolados da carne de peito de frango. Foram utilizadas diferentes concentrações de extrato (125 mg/mL, 250 mg/mL, 550 mg/mL de extrato de erva-mate, controle negativo com solução salina 0,85% e erva-mate pura) em triplicata e os resultados analisados pelo SAS ® 5.1. Quanto maior a concentração de extrato aplicada, maior (P<0,0001) foi o halo de inibição formado para as duas bactérias avaliadas, sendo que para a E. coli os halos foram menores quando comparados com os halos para o P. Mirabilis. Foi possível estimar a concentração de 400 mg/mL como sendo a mais eficiente frente ambas as bactérias avaliadas. Palavras-chave: Antimicrobiano natural; erva-mate; Escherichia coli; Proteus mirabilis. AbstractYerba mate has been studied due to the biological activities already evidenced. This study aimed to evaluate the antimicrobial effect of the addition of yerba mate extracts against Escherichia coli and Proteus mirabilis previously isolated from chicken breast meat using the disk diffusion method. Different extract concentrations were applied (125 mg/mL, 250 mg/mL, 550 mg/mL of yerba mate extract, negative control with saline 0.85% and pure yerba mate) in triplicate and the results were analyzed by the SAS ® 5.1. The increase in the concentration of the extract applied resulted in an increase (P<0.0001) in the inhibition zone formed for both bacteria, and it was evident that the inhibition zone for E. coli was smaller compared with the halos for P. mirabilis. It was possible to estimate the concentration of 400 mg/mL as the most efficient for both bacteria.

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Phenolic compounds in seven South American Ilex species

Cited by 259 publications

References 4 publications

Bioactive compounds content of chimarrão infusions related to the moisture of yerba maté (Ilex Paraguariensis) leaves

Bioactive compounds content of chimarrão infusions related to the moisture of yerba maté (Ilex Paraguariensis) leaves

Evaluation of antioxidant activity of grapevine leaves extracts (Vitis labrusca) in liver of Wistar rats

ATIVIDADE ANTIMICROBIANA DA ERVA-MATE (Ilex paraguariensis) CONTRA MICRORGANISMOS ISOLADOS DA CARNE DE FRANGO

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