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Registros recuperados: 7
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Antifungal activity of Cymbopogon winterianus jowitt ex bor against Candida albicans BJM
Oliveira,Wylly Araújo de; Pereira,Fillipe de Oliveira; Luna,Giliara Carol Diniz Gomes de; Lima,Igara Oliveira; Wanderley,Paulo Alves; Lima,Rita Baltazar de; Lima,Edeltrudes de Oliveira.
Candida albicans is an opportunistic yeast and a member of the normal human flora that commonly causes infections in patients with any type of deficiency of the immune system. The essential oils have been tested for antimycotic activity and pose much potential as antifungal agents. This work investigated the activity of the essential oil of Cymbopogon winterianus against C. albicans by MIC, MFC and time-kill methods. The essential oil (EO) was obtained by hydrodistillation using a Clevenger-type apparatus. It was tested fifteen strains of C. albicans. The MIC was determined by the microdilution method and the MFC was determined when an aliquot of the broth microdilution was cultivated in SDA medium. The phytochemical analysis of EO showed presence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Candida albicans; Antifungal; Cymbopogon winterianus.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200004
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Capacity of earwig Marava arachidis (Yersin) to access fennel plants Foeniculum vulgare Mill in laboratory and field Ciência Rural
Abramson,Charles Ira; Wanderley,Paulo Alves; Miná,Alexandre José Soares; Wanderley,Maria José Araújo.
This research was aimed at obtaining data about earwig behavior (Marava arachidis Y.) on fennel agro-ecosystems and evaluating its potential capacity to access plants in the absence of aphids under laboratory and field conditions. This study establishes a baseline to evaluate earwigs as biological controls to combat aphids that attack fennel plants. Two experiments were developed. In experiment 1, earwigs were studied under laboratory conditions, in experiment 2 under field conditions. Independent variables were sex, exposure to the essential oil of fennel for 24 or 48 hours, and whether the fennel plant was vegetative or flowering. The results indicated that earwigs will climb a fennel plant in the absence of aphids and that few statistical significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological control; Dermaptera; Aphids; Umbeliferae.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000600003
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Chemical composition and antifungal activity of Hyptis suaveolens (L.) poit leaves essential oil against Aspergillus species BJM
Moreira,Ana Carolina Pessoa; Lima,Edeltrudes de Oliveira; Wanderley,Paulo Alves; Carmo,Egberto Santos; Souza,Evandro Leite de.
This study aimed to identify the constituents of the essential oil from Hyptis suaveolens (L.) leaves using a Gas Chromatograph -Mass Spectrometer and assess its inhibitory effect on some potentially pathogenic Aspergilli (A. flavus, A. parasiticus, A. ochraceus, A. fumigatus and A. niger). Eucaliptol (47.64 %) was the most abundant component in the oil, followed for gama-ellemene (8.15 %), beta-pynene (6.55 %), (+)3-carene (5.16 %), trans-beta-cariophyllene (4.69 %) and germacrene (4.86 %). The essential oil revealed an interesting anti-Aspergillus property characterized by a Minimum Inhibitory Concentration and Minimum Fungicidal Concentration of 40 and 80 µL/mL, respectively. The oil at 80 and 40 µL/mL strongly inhibited the mycelial growth of A....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hyptis suaveolens L. (Poit); Essential oil; Anti-Aspergillus effect.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100006
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Efeito de quatro tipos de mel na longevidade e reprodução de Catolaccus grandis (Hymenoptera:pteromalidae) Ciência Rural
Wanderley,Paulo Alves; Wanderley,Maria José Araújo; Boiça Júnior,Arlindo Leal; Pavan Júnior,Álvaro.
O trabalho teve como objetivo conhecer o melhor tipo de mel em relação à longevidade e fertilidade do parasitóide do bicudo-do-algodoeiro Catolaccus grandis. Adultos recém-emergidos foram transferidos para recipientes plásticos de 500mL, adaptados com tubo para fornecer água e umidade para os insetos. Um casal do parasitóide foi mantido em cada recipiente em câmara climatizada a 25±1°C, UR = 70±10% e fotoperíodo de 14h. O trabalho constou de 4 tratamentos: mel de flor de laranjeira; mel de flores de plantas silvestres; mel de cana-de-açúcar (todos produzidos por Apis mellifera) e mel de flores silvestres produzido por abelha Jataí (Tetragonistica angustula), com 15 repetições cada. Adultos recém-emergidos do parasitóide receberam cinco larvas de Euscepes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catolaccus grandis; Mel; Tabela de vida; Longevidade; Fertilidade.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000400002
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Effects of Cymbopogon winterianus Jowitt ex Bor essential oil on the growth and morphogenesis of Trichophyton mentagrophytes BJPS
Pereira,Fillipe de Oliveira; Wanderley,Paulo Alves; Viana,Fernando Antônio Cavalcanti; Lima,Rita Baltazar de; Sousa,Frederico Barbosa de; Santos,Sócrates Golzio dos; Lima,Edeltrudes de Oliveira.
Trichophyton mentagrophytes is a fungus causative agent of dermatophytosis, affecting humans worldwide. This has driven the search for products for the treatment of these infections. Accordingly, the aim of this study was to investigate the antifungal activity of the Cymbopogon winterianus essential oil against T. mentagrophytes. The antifungal tests consisted of antifungal screening, determination of MIC and MFC, analysis of the essential oil's effects on mycelial growth, germination of fungal spores, fungal viability, morphogenesis, cell wall (test with sorbitol) and cell membrane (cell leakage test) of T. mentagrophytes. Upon screening, the oil inhibited all strains, with zones of growth inhibition of 24-28 mm in diameter. The MIC was 312 μg/mL and CFM...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trichophyton mentagrophytes/mycology; Dermatophytosis Cymbopogon winterianus/essential oil; Dermatophytosis Cymbopogon winterianus/antifungal activity; Dermatophytes.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502011000100018
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Growth inhibition and morphological alterations of Trichophyton rubrum induced by essential oil from Cymbopogon winterianus Jowitt ex Bor BJM
Pereira,Fillipe de Oliveira; Wanderley,Paulo Alves; Viana,Fernando Antônio Cavalcanti; Lima,Rita Baltazar de; Sousa,Frederico Barbosa de; Lima,Edeltrudes de Oliveira.
Trichophyton rubrum is one of the most common fungi causer of dermatophytosis, mycosis that affect humans and animals around the world. Researches aiming new products with antifungal activity become necessary to overcome difficulties on treatment of these infections. Accordingly, this study aimed to investigate the antifungal activity of essential oil from Cymbopogon winterianus against the dermatophyte T. rubrum. The antifungal screening was performed by solid medium diffusion method with 16 T. rubrum strains, minimum inhibitory concentration (MIC) and minimum fungicide concentration (MFC) were determined using the microdilution method. The effects on mycelial dry weight and morphology were also observed. Screening showed essential oil in natura inhibited...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trichophyton; Essential oil; Cymbopogon.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100029
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Mecanismos de ação de himenópteros parasitóides sobre Megastes spp. (Lepidoptera: Pyralidae) em agroecossistema de batata-doce (Ipomoea batatas L.) Ciência Rural
Wanderley,Paulo Alves; Wanderley,Maria José Araújo; Medeiros,Marcos Barros de; Veiga,Antônio Fernando de Souza Leão da.
Estudaram-se a presença e a ação de himenópteros parasitóides em agroecossistema de batata-doce (Ipomoea batatas L.) no município de Pedra de Fogo - PB, sobre o complexo Megastes spp, com o objetivo de identificar as espécies de parasitóides existentes, bem como descrever os principais eventos na ação de parasitismo sobre Megastes grandalis Guenee e Megastes pusialis Snellen. No levantamento direto, em 14% das plantas, existiam fêmeas de microhimenópteros ectoparasitóides da família braconidae atacando lagartas de Megastes spp. No levantamento indireto, constatou-se um ataque de parasitóide em 22% das lagartas, emergindo adultos de sete espécies das famílias braconidae, Chalcididae e Ichneumonidae, com predominância de braconídeos ectoparasitóides....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Controle biológico; Bracon.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000400044
Registros recuperados: 7
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