Antimicrobial Effects Of Three Tropical Plant Extracts On &lt;I&gt;Staphylococcus aureus, Escherichia coli and Candida albicans&lt;/I&gt;

Okigbo, R. N.; Mmeka, E C

doi:10.4314/ajtcam.v5i3.31277

Cited by 48 publications

(34 citation statements)

References 8 publications

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“…The excellent activity of the plant on bacteria and fungal species shows a very good potential of V. amygdalina to treat diseases caused by pathogens. Okigbo and Mmeka (2008) also reported the antibacterial and antifungal activity of V. amygdalina extracts on S. aureus, E. coli and Candida albicans. These local ethnomedical preparations and prescriptions of plant sources should be scientifically evaluated and disseminated properly.…”

Section: Discussionmentioning

confidence: 99%

Antimicrobial activity of Vernonia amygdalina on selected urinary tract pathogens

Uzoigwe¹,

Agwa²

2011

Afr. J. Microbiol. Res.

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The aqueous ethanol and acetone-ethanolic extracts of Vernonia amygdalina leaves and stems were investigated for their antimicrobial activities compared to ciprofloxacin, against Escherichia coli, Klebsiella sp and Staphylococcus sp. The antimicrobial activity of each extract on the isolates was determined by agar well diffusion and minimum inhibitory concentration methods. The acetoneethanolic extract of the leaf showed the highest antibacterial activity on Klebsiella sp in both methods used, followed by the ethanol leaf extracts on the same organism. E. coli and Staphylococcus sp were not susceptible to any of the extracts even at higher concentrations. The aqueous extracts of both leaf and stem were ineffective on all the test isolates at all concentration. Comparatively, the test isolates were sensitive to ciprofloxacin in both methods used but the antibacterial effect of acetone-ethanolic leaf extract on Klebsiella sp was higher than that of ciprofloxacin on Klebsiella sp. The results from this research showed that V. amygdalina could be used as raw material in the synthesis of antimicrobial drugs, especially against Klebsiella sp which have been attributed with high level drug resistance in urinary tract infections.

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Section: Discussionmentioning

confidence: 99%

Antimicrobial activity of Vernonia amygdalina on selected urinary tract pathogens

Uzoigwe¹,

Agwa²

2011

Afr. J. Microbiol. Res.

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“…Studies of different extracts have shown antioxidant (Igile et al, 1994;Farombi, Owoeye, 2011), antimicrobial (Erasto, Grierson, Afolayan, 2006;Okigbo, Mmeka, 2008), antiparasitic (Tadesse et al, 1993;Ademola, Eloff, 2011;Adiukwu, Amon, Nambatya, 2011), antidiabetic (Akinola et al, 2011;Ong et al, 2011) and antihypertensive (Ajibola, Eleyinmi, Aluko, 2011;Saliu et al, 2011) properties.…”

Section: Introductionmentioning

confidence: 99%

Anatomical characters of the medicinal leaf and stem of Gymnanthemum amygdalinum (Delile) Sch.Bip. ex Walp. (Asteraceae)

Duarte

Silva

2013

Braz. J. Pharm. Sci.

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Gymnanthemum amygdalinum (Delile) Sch.Bip. ex Walp. (Asteraceae), better known by its former name Vernonia amygdalina Delile, is a small shrub used in folk medicine as an antipyretic, laxative, antimalarial and anthelmintic. Studies have demonstrated that different vegetal extracts possess antioxidant, antimicrobial and antiparasitic activities. Among the bioactive metabolites, there are sesquiterpene lactones, saponins, polyphenols and flavonoids. This study investigated the leaf and stem microscopic characters of G. amygdalinum, aiming to expand the knowledge on this medicinal species and indicate anatomical structures. Plant material was fixed and sectioned by freehand and using a microtome. The sections were either stained or underwent standard histochemical tests. Scanning electron microscopy was performed to investigate epidermal relief. The leaf is amphistomatic with anomocytic stomata. There are striate cuticle, glandular and non-glandular trichomes and dorsiventral mesophyll. In transverse section, the midrib and the petiole have a plano-convex shape. Both show several collateral vascular bundles and few crystals of calcium oxalate. In the stem, the epidermis persists and the phellogen has a peripheral origin. It presents typical endodermis and sclerenchymatic caps adjoining the phloem. The aspects that contribute to characterizing the species are stomata on both leaf surfaces, midrib and petiole features, the endodermis and sclerenchymatic caps in the stem, as well as the different types of trichome on both aerial organs. Uniterms:Gymnanthemum amygdalinum/pharmacognosy. Gymnanthemum amygdalinum/ microscopic characterization. Vernonia amygdalina/pharmacognosy. Vernonia amygdalina/microscopic characterization. Asteraceae/pharmacognosy. Medicinal plants.Gymnanthemum amygdalinum (Delile) Sch.Bip. ex Walp. (Asteraceae), espécie mais conhecida pela sinonímia Vernonia amygdalina Delile, é um pequeno arbusto empregado na medicina popular como antipirético, laxativo, antimalárico e anti-helmíntico. Estudos demonstraram que diferentes extratos do vegetal possuem atividades antioxidante, antimicrobiana e antiparasitária. Entre os metabólitos bioativos presentes, citam-se lactonas sesquiterpenoides, saponinas, polifenóis e flavonoides. Este estudo investigou os caracteres microscópicos de folha e caule de G. amygdalinum, a fim de ampliar o conhecimento acerca dessa espécie medicinal e apontar estruturas anatômicas características. O material foi fixado e seccionado à mão livre e em micrótomo. Os cortes foram corados ou submetidos aos testes histoquímicos clássicos. Empregou-se microscopia eletrônica de varredura para investigar a ultraestrutura da superfície epidérmica. A folha é anfiestomática com estômatos anomocíticos. Há cutícula estriada, tricomas glandular e tector e mesofilo dorsiventral. Em secção transversal, a nervura central e o pecíolo têm contorno planoconvexo. Ambos mostram vários feixes vasculares colaterais e poucos cristais de oxalato de cálcio. No caule, a epiderme permanece e o felogênio tem ins...

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“…Ebenfalls seit Langem bewährt bei dieser Indikation ist Teebaumöl, das unverdünnt auf die betroffenen Hautstellen getupft werden kann. Gleichfalls antimykotisch und antibakteriell wirken die ätherischen Öle von Lemongras (Zitronengras) und Zimtrinde [7,8], die pur oder gelöst in einem fetten Öl angewendet werden. …”

Section: äTherische öLeunclassified

Einsatzmöglichkeiten der Phytotherapie bei Hautkrankheiten

Gündling¹

2017

Schweiz Z Ganzheitsmed

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Antimicrobial Effects Of Three Tropical Plant Extracts On <I>Staphylococcus aureus, Escherichia coli and Candida albicans</I>

Cited by 48 publications

References 8 publications

Antimicrobial activity of Vernonia amygdalina on selected urinary tract pathogens

Antimicrobial activity of Vernonia amygdalina on selected urinary tract pathogens

Anatomical characters of the medicinal leaf and stem of Gymnanthemum amygdalinum (Delile) Sch.Bip. ex Walp. (Asteraceae)

Einsatzmöglichkeiten der Phytotherapie bei Hautkrankheiten

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