Phytochemical Determinations and Antibacterial Activities of the Leaf Extracts of <i>Combretum molle</i> and <i>Gossypium arboretum</i>

Piper crocatum is one of medicinal herbal plants with a large number of benefits. Usually herbal plants have activity as antibacterial agent. Therefore, the objectives of this research were to obtain information on antibacterial activities of the leaf extracts of Piper crocatum againts four types of bacteria, in that Staphylococcus, Bacillus substilis, Escherichia coli, and Pseudomonas aeruginosa and then to analyze the phytochemistry of the leaf extracts of Piper crocatum. The leaves of Piper crocatum were extracted by maceration and reflux using ethanol 30%. The assays of the antibacterial activities and phytochemistry on the extracts were carried out using the method of Maria Bintang. Results showed that the yield of the extraction using ethanol by maceration method was 20.8%. Meanwhile, using the reflux method, the yield was obtained about 26.25%. The phytochemistry analysis showed that the leaf extracts of Piper crocatum contained alkaloid, steroid and tanin. According to this study, it was found that the leaf extract of Piper crocatum can be used to inhibit the growth of B. subtilis and P. aeuruginosa, but can not inhibit the growth of E.coli and S. aureus.

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Antibacterial Activities ofGinkgo bilobaL. Leaf Extracts

The Scientific World JOURNAL ◽

10.1100/2011/545421 ◽

2011 ◽

Vol 11 ◽

pp. 2237-2242 ◽

Cited By ~ 15

Author(s):

S. C. Sati ◽

Savita Joshi

Keyword(s):

Escherichia Coli ◽

Inhibitory Concentration ◽

Methanol Extract ◽

Antibacterial Activities ◽

Erwinia Chrysanthemi ◽

Disc Diffusion ◽

Zone Of Inhibition ◽

Leaf Extracts ◽

Hexane Extracts ◽

Broth Dilution

The antibacterial activity of methanol, ethanol, chloroform, and hexane extracts of the leaves of Himalayan gymnospermous plantGinkgo bilobaL. was assessed against five animal and plant pathogenic strains (Agrobacterium tumefaciens, Bacillus subtilis, Escherichia coli, Erwinia chrysanthemi, and Xanthomonas phaseoli) employing disc-diffusion and broth-dilution assays. The methanol extract showed the highest activity (zone of inhibition of 15–21 mm) followed by ethanol (14–19 mm), chloroform (15–20 mm), and hexane (14–19 mm) extracts at 250 μg/mL. A minimum inhibitory concentration (MIC) of 7.8 μg/mL was found for the methanol extract against most of the pathogens tested.

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Antibacterial Activities of Leaf Extracts of Jatropha tanjorensis Ellis and Saroja (Euphorbiaceae)

Medicinal Plant Research ◽

10.5376/mpr.2018.08.0004 ◽

2018 ◽

Cited By ~ 1

Author(s):

Safiya Yahaya Daniyan ◽

Chinenye Catherine Ukubuiwe ◽

Azubuike Christian Ukubuiwe ◽

Oghenekevwe Juliet Oluwafemi ◽

Prince Ossai Chukwudi

Keyword(s):

Antibacterial Activities ◽

Leaf Extracts

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Antibacterial activities of leaf extracts of Brassica oleracae var. capitata. (Brassicaceae) against multi-drug resistant clinical isolates in Maiduguri

Sokoto Journal of Veterinary Sciences ◽

10.4314/sokjvs.v16i4.7 ◽

2019 ◽

Vol 16 (4) ◽

pp. 58

Author(s):

A.O. Akanmu ◽

S.T. Balogun ◽

F Haruna ◽

S Gamache

Keyword(s):

Antibacterial Activities ◽

Clinical Isolates ◽

Drug Resistant ◽

Leaf Extracts

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Bioinspired Synthesis of Acacia senegal Leaf Extract Functionalized Silver Nanoparticles and Its Antimicrobial Evaluation

Journal of Nanomaterials ◽

10.1155/2020/6474913 ◽

2020 ◽

Vol 2020 ◽

pp. 1-8

Author(s):

Edwina Olohirere Uzunuigbe ◽

Abidemi Paul Kappo ◽

Sixberth Mlowe ◽

Neerish Revaprasadu

Keyword(s):

Silver Nanoparticles ◽

Colour Change ◽

Silver Ions ◽

Antibacterial Activities ◽

Cubic Phase ◽

X Ray Diffraction ◽

Leaf Extracts ◽

Acacia Senegal ◽

Transmission Electron ◽

Antimicrobial Evaluation

Synthesizing nanoparticles with the less environmentally malignant approach using plant extract is of great interest; this is because most of the chemical approaches can be very costly, toxic, and time-consuming. Herein, we report the use of Acacia senegal leaf extracts to synthesize silver nanoparticles (AgNPs) using an environmentally greener approach. Silver ions were reduced using the bioactive components of the plant extracts with observable colour change from faint colourless to a brownish solution as indication of AgNP formation. The structural properties of the as-synthesized AgNPs were characterized using powder X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), and UV-Vis absorption spectrum. Antimicrobial assessment of the as-synthesized AgNPs was explored on some strains of gram-positive and gram-negative bacteria. The obtained results indicate that the as-synthesized AgNPs are pure crystallite of cubic phase of AgNPs, fairly dispersed with a size range of 10–19 nm. The AgNPs were found to be small in size and exhibit significant antibacterial activities, suggesting that the as-synthesized AgNPs could be used in the pharmaceutical and food industries as bactericidal agents.

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