Antimicrobial activity of South African medicinal plants

Vuuren, Sandy van

doi:10.1016/j.jep.2008.05.038

Cited by 226 publications

(201 citation statements)

References 126 publications

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“…Screening by paper disc diffusion method Use of the paper disc diffusion method is a very popular and useful method for screening new chemicals with antibacterial activities (Hong and Lee, 2001;Vuuren, 2008). The results of the paper disc diffusion test for 8 different flavonoids tested against several B. cereus strains are shown in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Antimicrobial Effect of Kaempferol on Psychrotrophic Bacillus cereus Strains Outbreakable in Dairy Products

Lee¹,

Moon²,

Kim³

et al. 2011

Korean Journal for Food Science of Animal Resources

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The objective of this study was to evaluate the antimicrobial effects of various natural flavonoids against growth of psychotropic Bacillus cereus strains, which cause dairy food outbreaks. Flavonoids were first screened for their ability to inhibit growth of B. cereus strains using the paper-disc diffusion test. Second, the growth inhibitory effect of selected flavonoids was evaluated in tryptic soy broth supplemented with 0.6% yeast extract, and the bactericidal effect of the flavonoids was measured in 0.8% (w/v) NaCl solution. Based on the paper-disc diffusion test, kaempferol was effectively active against B. cereus P14 and B. cereus KCCM 40935. Kaempferol had an antimicrobial effect at concentrations greater than 100 µM, and the numbers of B. cereus P14 and B. cereus KCCM 40935 decreased by 3.55 and 1.5 log cycles, respectively. The cell numbers of B. cereus P14 and B. cereus KCCM 40935 treated with 50 µM kaempferol were reduced by 4.18 and 2.84 log cycles during a 24 h incubation to test the bactericidal effect of kaempferol (p<0.05). The results indicate that kaempferol had the greatest antimicrobial effect among the psychotropic B. cereus strains and the natural flavonoids tested.

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Section: Resultsmentioning

confidence: 99%

Antimicrobial Effect of Kaempferol on Psychrotrophic Bacillus cereus Strains Outbreakable in Dairy Products

Lee¹,

Moon²,

Kim³

et al. 2011

Korean Journal for Food Science of Animal Resources

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“…According to Gibbons (2004) and Van Vuuren (2008), crude extracts of natural products with an MIC lower than 1000 μg/ml are considered relevant and extracts with a MIC below 100 µg/ml are considered promising as potential antimicrobial agents. Therefore, based on these studies, it can be said that the n-butanol fraction and the ethyl acetate extract achieved a promising results with a MIC of 50 µg/ml to the strains S. mitis and S. mutans.…”

Section: Discussionmentioning

confidence: 99%

Phytochemical screening of Azadirachta indica A. Juss for antimicrobial activity

Galeane¹,

Martins²,

Massuco³

et al. 2017

Afr. J. Microbiol. Res.

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Azadirachta indica A. Juss, known as neem (Meliacea family), has insecticide and pesticide properties, and many studies have shown their efficacy as antifungal, anti -inflammatory, among others. Studies for the development of drugs from plants are rising due to several factors such as bacterial resistance, indiscriminate use and the adverse reactions of antibiotics. In this study, phytochemical triage and thin layer chromatography analysis were performed, with similar results as the presence of flavonoids, tannins and terpenes. The antimicrobial activity showed that the ethyl acetate extract and butanol fraction presented greater activity against Streptococcus mutans and Streptococcus mitis presenting a MIC = 50 µg/ml for these strains, and the strain Enteroccocus faecalis, the hydroethanolic extract and aqueous fraction were most promising samples with a MIC = 50 µg/ml and MIC = 25 µg/ml, respectively. Therefore, it encourages the continuation of studies, aiming at the devel opment of cosmetics or toothpaste.

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“…Meanwhile, certain flavonoids with potent anti-HIV effects are capable of inhibiting virus through inhibition of reverse transcriptase and even cellular DNA or RNA polymerase (Tang et al, 2012). Although a number of publications have focused on the isolation and identification of bioactive compounds it is important to keep in mind the complexity of plants and a single compound may not be responsible for the observed activity but rather a combination of compounds (either minor or major ) interacting in an additive or synergistic manner (Van Vauren, 2008). In conclusion, many plant extracts may showed inhibitory effect on rotavirus but this field still need many studies to determine the most active plants and their mode of actions.…”

Section: In Vitro Studies Of Some Medicinal Plants Extracts For Antivmentioning

confidence: 99%

In Vitro Studies of Some Medicinal Plants Extracts for Antiviral Activity against Rotavirus

AL-Ballawi¹,

Redhwan²,

Ali³

2017

IOSRJPBS

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Antimicrobial activity of South African medicinal plants

Cited by 226 publications

References 126 publications

Antimicrobial Effect of Kaempferol on Psychrotrophic Bacillus cereus Strains Outbreakable in Dairy Products

Antimicrobial Effect of Kaempferol on Psychrotrophic Bacillus cereus Strains Outbreakable in Dairy Products

Phytochemical screening of Azadirachta indica A. Juss for antimicrobial activity

In Vitro Studies of Some Medicinal Plants Extracts for Antiviral Activity against Rotavirus

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