Growth inhibition of plant pathogenic bacteria and fungi by extracts from selected South African plant species

Pretorius, J.C.; Magama, Sibusisiwe; Zietsman, P.C.; Wyk, B.‐E. Van

doi:10.1016/s0254-6299(15)30344-6

Cited by 41 publications

(24 citation statements)

References 24 publications

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“…In recent times, there have been an increased antibiotic resistant strains of clinically important pathogens, which has led to the emergence of new bacterial strains that are multi-resistant [9,10,11] .Therefore, this has led to the search for more effective antimicrobial agents among materials of plant origin, with the aim of discovering potentially active ingredients that can serve as a source for the synthesis of new antimicrobial drugs [12] . Medicinal plants use date back to several centuries in Africa and other regions of the world.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Activities of Chrysophyllum Albidum Leaves, Fruits and Seeds

George¹,

Adenipekun²,

Fasogbon³

et al. 2018

Am. J. Biomed. Sci.

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Background: Chrysophyllum albidum is a medicinal plant that belongs to the Sapotaceae family. This study was carried out to determine the antimicrobial activities of the leaves, seeds and fruits of Chrysophyllum albidum.Materials and Methods: The fruits, leaves and seeds of Chrysophyllum albidum were extracted with distilled water, Seaman's Schnapps, Methanol and Petroleum ether using cold extraction. These extracts were tested on various organisms. Antimicrobial activities of the various extracts were determined using the agar well diffusion technique to detect the Minimum Inhibitory Concentration (MIC).Results and Discussion: Methicillin Resistant Staphylococcus aureus was inhibited by all the extracts at MIC between 32µg/ml to 512µg/ml except Seaman's Schnapps leaves and petroleum ether seed extract. The fruit extracts had a high antimicrobial activity against all the tested organisms. The extracts from Seaman's Schnapps had little activity while the aqueous extracts had MIC ranging from 64-512µg/ml on most of the organisms tested. The statistical analysis of the extracts indicated P-value of 0.122 for Aqueous extracts, which was statistically insignificant compared to 0.003 for Methanolic extracts and 0.001 for Seaman's Schnapps extracts in the inhibition pattern of the extracts. Aqueous extracts showed more inhibitory activity than Methanolic and Seaman's Schnaps extracts.

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Section: Introductionmentioning

confidence: 99%

Antimicrobial Activities of Chrysophyllum Albidum Leaves, Fruits and Seeds

George¹,

Adenipekun²,

Fasogbon³

et al. 2018

Am. J. Biomed. Sci.

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“…Dilutions were made using DMSO as solvent. Each plate was incubating for 24 hours at 37°C for bacteria and 5 -7 days at 25°C for fungi, as described by [27]. A positive control (containing inoculum but no essential oil) and negative control (containing essential oil but no inoculum) were included on each microplate.…”

Section: Antimicrobial Assaymentioning

confidence: 99%

Antimicrobial Activity and Chemical Composition of Two Essential Oils and Eugenol from Flower Buds of

Atanasova-Pancevska¹,

Bogdanov²,

Kungulovski³

2017

Open Bio. Sci. J.

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“…17 This study does not only show the scientific basis for some of the therapeutic uses of this plant in traditional medicine, but also confirms the fact that ethno botanical approach should be considered when investigating antimicrobial properties of plants. 18,19 It also explains why these plants give similar therapeutic result when they are used interchangeably in spite of their uniqueness. 20 In …”

Section: Methanolic Extractmentioning

confidence: 99%

Untitled

2016

IJPSR

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ABSTRACT:In vitro antibacterial activity of Bryophyllum pinnatum (in vivo generated and in vitro regenerated roots) were analysed in this study. Traditional uses for these plants treat specific conditions or diseases. The present study examined the antibacterial activity using the disk diffusion method using Ethanolic & Methanolic extract as part of the process of understanding the chemistry, toxicity and efficacy of these plant extracts. Methanolic and Ethanolic extracts of this plant was examined using a standard antimicrobial disk diffusion method. Extracts were tested against both Gram negative (Escherichia coli, Vibrio cholerae, Salmonella typhi and Pseudomonas aeruginosa) & Gram positive (Bacillus cereus & Staphylococcus aureus) bacteria. Methanolic in vitro regenerated roots showed higher inhibition zone against all bacterial species while natural growing plant root extract showed minimum inhibition. In vitro regenerated root extract showed moderate inhibition zone against all bacterial species. S. aureus showed maximum (25.2 mm) inhibition zone in in vitro root methanolic extract while V. cholerae showed minimum (14 mm) in natural growing root extract. In ethanolic extract maximum inhibition zone (22.1 mm) was observed against S. aureus and another maximum inhibition zone (21.3mm and 21mm) was reported against B. cereus and P. aeruginosa respectively. These results served to validate our procedures and indicate the need for the present study. Implications of these results for bioactivity and drug discovery potential of plant extracts can be further explored. This study serves as basis for further research on these weed plants.

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Growth inhibition of plant pathogenic bacteria and fungi by extracts from selected South African plant species

Cited by 41 publications

References 24 publications

Antimicrobial Activities of Chrysophyllum Albidum Leaves, Fruits and Seeds

Antimicrobial Activities of Chrysophyllum Albidum Leaves, Fruits and Seeds

Antimicrobial Activity and Chemical Composition of Two Essential Oils and Eugenol from Flower Buds of

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