Antimicrobial studies on three species of Hypericum from the Canary Islands

Rabanal, Rosa M.; Arias, Á.; Prado, B; Hernández-Pérez, M.; Sánchez-Mateo, Candelaria C.

doi:10.1016/s0378-8741(02)00083-1

Cited by 68 publications

(45 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Previous reports also showed that some Hypericum species growing in various regions of the world have a remarkably broad spectrum of antimicrobial activities (Herrera et al, 1996;Sokmen et al, 1999;Mukherjee et al, 2002;Rabanal et al, 2002;Dall'Agnol et al, 2003;Fenner et al, 2005). However, none of those studies were about the Hypericum species that were the subjects of the current study.…”

Section: Antimicrobial Activities Of Extractsmentioning

confidence: 94%

“…Therefore, research into biologically active extracts and compounds from natural sources has been of great interest to scientists in an attempt to discover new sources for drugs that may be useful in combating infectious diseases. In recent years, a large number of studies dealing with antimicrobial screening of the extracts of medicinal plants have been reported (Sokmen et al, 1999;Keles et al, 2001;Erdogrul, 2002;Mukherjee et al, 2002;Rabanal et al, 2002;Dall'Agnol et al, 2003;Fenner et al, 2005;Ozturk & Ercisli, 2005;Salehi et al, 2005). Turkish native herbs from both natural and cultivated sources are being more widely used on a commercial scale in the food industry, in traditional medicine, and for their flavoring properties (Baytop, 1999).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Antimicrobial and Antioxidant Activities of Some Plants Used as Remedies in Turkish Traditional Medicine

Unal

Mavi

Kara

et al. 2008

Pharmaceutical Biology

View full text Add to dashboard Cite

The antimicrobial activities of chloroform, acetone, ethanol, and water extracts of 25 plants, mostly used as remedies against various diseases in Turkish traditional medicine, were tested against 10 pathogenic bacteria and one fungus (Candida albicans) using the disk diffusion method. Among the tested plant species, Ziziphora clinopodioides Lam (Labiatae), Thymus fallax Fisch et Mey. (Labiatae), and three Hypericum species [H. heterophyllum Vent., H. hyssopifolium Chaix. subsp. elongatum (Ledeb.) Woron var. elongatum, and H. scabrum L.] (Guttiferae) showed antimicrobial activity at a broader spectrum. In particular, chloroform, acetone, and ethanol extracts of Z. clinopodioides inhibited the growth of all microbial species. Minimal inhibition concentration values of Z. clinopodioides extracts were also found to be low. The antioxidant activity of the acetone, ethanol, and water extracts of 20 plants was also evaluated by lipid peroxidation inhibition and DPPH free radical scavenging methods. It was found that water, ethanol, and acetone extracts of Z. clinopodioides, T. fallax, three Hypericum species, Artemisia santonicum L. (Compositae), and Echinophora tenuifolia L. subsp. sibthorpiena (Umbelliferae) have strong antioxidant activities among the tested plant species. In general, there is a correlation between the antioxidant potential and total phenolic contents of the extracts. In light of the current study, it can be concluded that Z. clinopodioides and T. fallax may have potential use in the food industry as antioxidants and antimicrobial herbs, as well as pharmaceutical interest.

show abstract

Section: Antimicrobial Activities Of Extractsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Antimicrobial and Antioxidant Activities of Some Plants Used as Remedies in Turkish Traditional Medicine

Unal

Mavi

Kara

et al. 2008

Pharmaceutical Biology

View full text Add to dashboard Cite

show abstract

“…The genus Hypericum has been receiving attention as a medicinal plant because a number of species have been found to be effective in the treatment of burns and gastrointestinal diseases (Baytop, 1984;Mukherjee et al, 2000). Its antibacterial, antifungal, and antioxidant activities have been investigated by many researchers (Decosterd et al, 1991;Pistelli et al, 2000;Conforti et al, 2002;Rabanal et al, 2002;Schwob et al, 2002). Also, Hypericum species contain a variety of compounds such as flavonoids (Chung et al, 1997;Dias et al, 1998;Wu et al, 1998a), xanthones (Gunatilaka et al, 1979;Rath et al, 1996;Wu et al, 1998b), hyperforin derivates (Decosterd et al, 1989;Trifunuvic et al, 1998), essential oils (Cakir et al, 1997), and fatty acids (Ozen & Başhan, 2002).…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Activities of Ethanol Extracts ofHypericum triquetrifolium. andHypericum scabroides.

Kızıl

Yavuz

et al. 2008

Pharmaceutical Biology

View full text Add to dashboard Cite

The antioxidative potential of ethanol extracts of Hypericum triquetrifolium Turra (Hypericaceae) and Hypericum scabroides Robson & Poulter (Hypericaceae) were investigated for the first time using 1,1-diphenyl-2-picrylhydrazyl (DPPH), metal chelating, reducing power, hydroxyl radical, total antioxidant activity, and lipid peroxidation inhibition assays. Both extracts tested were found to be highly active in the DPPH radical scavenging assay. The IC 50 values of H. triquetrifolium (HT) and H. scabroides (HS) in the DPPH radical scavenging assay were 39.0 and 33.8 µg/mL, respectively. The amounts of total phenolic compounds were also determined, and total phenolic content of 1 mg H. triquetrifolium and H. scabroides ethanol extracts were equivalent to 267 and 333 µg gallic acid. Metal chelating ability was found to be low compared with EDTA. Both ethanol extracts of Hypericum species exhibited a high reducing power, suggesting that extracts had strong electron-donating capacity. The degradation of deoxyribose by hydroxyl radicals was shown to be inhibited by Hypericum extracts, acting mainly by scavenging hydroxyl radicals rather than as chelators of iron ions. Total antioxidant activity of ethanol extracts of HT and HS were tested by using ferric thiocyanate (FTC) and thiobarbituric acid (TBA) methods. Antioxidative activities of both extracts were found to be comparable with vitamin E. Moreover, both extracts showed notable capacity to suppress Fe 2+ -induced lipid peroxidation in rat brain homogenate. The results obtained in the current study indicate that ethanol extracts of HS and HT are a potential source of natural antioxidants.

show abstract

“…Na execução da triagem ("screening") de atividade antifúngica, foi escolhido o método de difusão em disco, consoante com diversos estudos realizados com esta mesma finalidade (OSTROSKY et al, 2008, RABANAL et al, 2002, TADEG et al, 2005, pelo fato de que este método é largamente utilizado na rotina laboratorial, é de fácil execução, baixo custo e proporciona resultados qualitativos em 24 horas (ESPINEL-INGROFF, 2007 Quanto ao comportamento das cepas frente à ação dos óleos essenciais, a amostra C.…”

Section: Descrições Resultados Interpretaçõesunclassified

Triagem in vitro de atividades antifúngica de óleos essenciais sobre leveduras de Candida como estratégia de prospecção e racionalização do uso de fitoterápicos

Melo¹,

Batista²,

Gurgel³

2017

RPI

View full text Add to dashboard Cite

This article shows the antifungal properties of eight essential oils extracted of plants widely known by the Brazilian popular knowledge. This is a prospective experimental study and for its execution, it was done a qualitative antibiogram with ten strains of Candida spp and essential oils. The inhibition zones varied among 9,4mm to 24,9mm. This study demonstrates the importance of efficient and accessible therapies as an alternative to the unreasonable use of synthetic medicines. KEYWORDS: Phytotherapy; Candida; essential oils; EL ENSAYO IN VITRO DE ACTIVIDAD ANTIFÚNGICA DE ACEITES ESENCIALES SOBRE LEVADURAS DE CANDIDA COMO ESTRATEGIA DE PROSPECCIÓN Y RACIONALIZACIÓN DEL USO DE FITOTERÁPICOS RESUMENEste artículo pretende evidenciar las propiedades antifúngicas de ocho aceites esenciales extraídos de las plantas, siendo estas ampliamente conocidas por el saber popular brasileño. Esta investigación es de carácter experimental con realización de antibiograma con cepas de Candida spp y aceites esenciales. Esta investigación muestra la importancia de terapias eficaces y accesibles como una alternativa frente al uso indiscriminado de medicamentos sintéticos.

show abstract

Antimicrobial studies on three species of Hypericum from the Canary Islands

Cited by 68 publications

References 33 publications

Antimicrobial and Antioxidant Activities of Some Plants Used as Remedies in Turkish Traditional Medicine

Antimicrobial and Antioxidant Activities of Some Plants Used as Remedies in Turkish Traditional Medicine

Antioxidant Activities of Ethanol Extracts ofHypericum triquetrifolium. andHypericum scabroides.

Triagem in vitro de atividades antifúngica de óleos essenciais sobre leveduras de Candida como estratégia de prospecção e racionalização do uso de fitoterápicos

Contact Info

Product

Resources

About