Antimicrobial activities of aqueous and ethanolic extracts of some natural spices (garlic, turmeric, thyme and onions) on some clinical isolates

Omorodion, Nnenna; Ujoh, Esther Chinwe

doi:10.30574/gscbps.2022.19.1.0094

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Research suggests that antimicrobial phytochemicals are more soluble in polar solvents (Vittaya et al, 2023). Aqueous extracts owe their antimicrobial activity to anionic components like thiocyanates, nitrates, chlorides, and sulphates in plants (Omorodion et al, 2022). Notably, the antimicrobial efficacy of the plant extract B. sensitivum matched standard antibiotics, indicating the presence of bioactive constituents like bioflavonoids, amentoflavone, and cupressoflavone in their leaves (Negi & Mirza, 2020), consistent with the findings of Mary and Raj (2017) and Natarajan et al (2010).…”

Section: Results Results Resultssupporting

confidence: 78%

Analysis of the antibacterial potentials of the leaf extracts of selected medicinal plants against pathogenic bacterial strains

ASHA,

RADHAKRISHNAN RADHAMONI

2023

Not Sci Biol

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Medicinal plants render herbal remedies for human ailments and hence prevail over traditional healthcare practices. This study has analysed the antibacterial potential of the leaf extracts of four selected medicinal plants namely, Azadirachta indica, Ocimum tenuiflorum, Biophytum sensitivum, and Mimosa pudica, using Kirby-Bauer’s disc diffusion method. Six bacterial species, namely Escherichia coli, Pseudomonas aeruginosa, Acinetobacter baumannii, Bacillus megaterium, Bacillus subtilis, and Brevibacillus choshinensis were used to assess the growth inhibitory potentials of the aqueous and ethanolic extracts of the selected plant leaves. The study revealed that the leaf extract of B. sensitivum had the most pronounced antibacterial potential, followed by A. indica and O. tenuiflorum. The least inhibitory potential was showed by the extracts of M. pudica. The findings of the investigation state that the aqueous extract had more consistent antibacterial activity than the ethanolic extracts, confirming that the antibacterial agents present in these leaf extracts are hydrophilic in nature. In terms of growth inhibition, the susceptibility of the pathogenic, virulent strains of bacteria toward these extracts was found comparatively lower than that of the non-virulent, environmental bacteria. With the aqueous extracts, A. baumannii was found to be the most susceptible bacterial species while E. coli was the most resistant. With the ethanolic extracts, E. coli was found to be the most susceptible and B. subtilis the least. The current study supports the usage of the screened medicinal plants in alternative medical practices, as a measure to avoid opportunistic infections by environmental bacteria.

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Section: Results Results Resultssupporting

confidence: 78%

Analysis of the antibacterial potentials of the leaf extracts of selected medicinal plants against pathogenic bacterial strains

ASHA,

RADHAKRISHNAN RADHAMONI

2023

Not Sci Biol

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“…Garlic's antimicrobial activity also showed action against some gram positive bacteria, gram negative bacteria (Escherichia coli, Salmonella, Staphylococcus, Streptococcus, Klebsiella, Proteus, Bacillus, and Clostridium species) and acid-fast bacteria like Mycobacterium tuberculosis 59,60 . Crush garlic cloves has allyl sulphides which was separated, identified as a responsible factor for antibacterial action 61,62,63,64 .…”

Section: Beneficial Role Of Garlicmentioning

confidence: 99%

Untitled

2023

IJPSR

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Lead comes in a category of toxic heavy metal which acts as a pollutant when present in high concentration in the environment and cause severe effects on the human body. Due to its continuous use its level increases and serves as a serious threat for the society. Lungs and skin are the first organs which get affected by Lead toxicity. Lungs are the most important and sensitive part of human therefore the toxic effects of lead toxicity on lungs cause severe damage. Garlic (Allium sativum) with medicinal properties is being used for various human ailments since ancient times. Due to its anti-cancerous, antidiabetic, antimicrobial, antioxidant activities helps in reducing the lead toxicity in the lungs as well. Garlic is rich in many components such as sulphur compounds, amino acids, vitamins, protein, trace elements thereby making it a potent therapeutic agent. Since, the therapeutic properties of garlic has not been considered up to its best possible level against heavy metal toxicity therefore, this article presents the toxicity of Lead on lungs and medicinal properties of Garlic. INTRODUCTION:The environment is made up of three elements: land, atmosphere, and water, into which humans, plants and microbes resides. There are several layers in the environment which include biosphere-refers to living things, atmosphere refers to the air, lithosphere refers to land, and hydrosphere refers to water, that function together in harmony 1, 2, 3, 4 . Pollutants like inorganic ions, organometallic compounds, heavy metals, radioactive isotopes, gaseous pollutants, and nanoparticles have significantly damaged the environment.

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Curcumin nanoparticles as a natural antioxidant and antimicrobial preservative against foodborne pathogens in processed chicken fingers

Morsy,

Al-Dalain,

Haddad

et al. 2023

Front. Sustain. Food Syst.

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IntroductionCurcumin has highly antimicrobial and antioxidant activities but has poor bioavailability and low solubility in water. The current study aimed to assess curcumin nanoparticles (Curcumin-NPs) antibacterial and antioxidant efficacy against some pathogens in chicken fingers at 4 °C/27 days.MethodsCurcumin-NPs with particle sizes of 80 ± 2 nm were synthesized using a planetary ball-mill and chitosan-gelatin nanoparticle (CS-G-NPs) solution and then placed into chicken fingers at three concentrations, (2, 5, and 10 μg g−1). The physicochemical properties, antioxidant activity, and antibacterial capacity were evaluated.Results and discussionCurcumin-NPs showed high phenolic content (67.48 mg GAE g−1) and antioxidant activity (22.47 μg ml−1) at 10 μg g−1 compared to other concentrations and curcumin bulk. Curcumin-NPs showed noticeably greater antibacterial ability (in vitro) against S. aureus (18 mm), E. coli (15 mm), and B. cereus (13 mm). In challenge studies, Curcumin-NPs effectively inhibited the three inoculated pathogens ~3–4 log CFU g−1; in vivo; in chicken fingers kept for up to 27 days, compared to the control. In curcumin-NPs chicken samples, the contents of thiobarbituric acid reactive substances (TBARS) and total volatile base nitrogen (TVB-N) compared to the control were substantially lower (27 days). TEM analysis provided an estimate of the antibacterial mechanism of Curcumin-NPs. The findings demonstrated that Curcumin-NPs at 10 μg g−1 were more successful in reducing microbial load in chicken fingers as well as improving quality parameters, enhancing shelf life, and reducing lipid oxidation in poultry meat products.

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Antimicrobial activities of aqueous and ethanolic extracts of some natural spices (garlic, turmeric, thyme and onions) on some clinical isolates

Cited by 3 publications

References 8 publications

Analysis of the antibacterial potentials of the leaf extracts of selected medicinal plants against pathogenic bacterial strains

Analysis of the antibacterial potentials of the leaf extracts of selected medicinal plants against pathogenic bacterial strains

Untitled

Curcumin nanoparticles as a natural antioxidant and antimicrobial preservative against foodborne pathogens in processed chicken fingers

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