In vitro antibacterial activity of some Iranian medicinal plant extracts against Helicobacter pylori

Hassan, H. M., Jiang, Z.-H., Asmussen, C., McDonald, E. and Qin, W. 2014. Antibacterial activity of northern Ontario medicinal plant extracts. Can. J. Plant Sci. 94: 417–424. In the present study, the antibacterial activity (in vitro) of the leaf and/or flower crude extracts of Anaphalis margaritacea (L.) Benth & Hook.f., Grindelia squarrosa (Pursh) Dunal, Apocynum androsaemifolium L., Arctostaphylos uva-ursi (L.) Spreng, Cornus canadensis L. and Xanthium strumarium L. medicinal plants was analyzed through the hole-plate diffusion, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) assays against Escherichia coli, Aeromonas caviae, Paenibacillus alvei, Micrococcus luteus, Mycobacterium avium subsp. avium and Bacillus cereus bacteria. In addition, the time-kill dynamic processes of these extracts against A. caviae, B. cereus, P. alvei, and M. luteus bacteria were also tested. The leaf and flower extracts of Anap. margaritacea and G. squarrosa possess significant antibacterial activity against all the bacteria tested, with inhibition of A. caviae, P. alvei and M. luteus within 1–12 h of incubation at MBC. Particularly, at higher concentrations of the Anap. margaritacea flower crude extract (2–3×MBC), inhibition of A. caviae, B. cereus, P. alvei, and M. luteus bacteria is achieved between 0.5 and 4 h of incubation. In addition, these extracts exhibit high inhibition diameters (majority > 18 mm) and low MIC and/or MBCs (majority=1.25 mg mL−1). In contrast, the leaf extracts of Arct. uva-ursi, X. strumarium, Apoc. androsaemifolium and C. canadensis plants demonstrate moderate to low activity. These results indicate that extracts from Anap. margaritacea and G. squarrosa could be a source of novel antimicrobial scaffolds, compounds or pharmacophores with implications in the pharmaceutical industry and medicine.

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In vitro evaluation of the antibacterial activity of some medicinal plant extracts against Xanthomonas campestris pv. musacearum

Ethiopian Journal of Science and Technology ◽

10.4314/ejst.v10i1.2 ◽

2017 ◽

Vol 10 (1) ◽

pp. 17 ◽

Cited By ~ 2

Author(s):

Getahun Yemata ◽

Masresha Fetene

Keyword(s):

Antibacterial Activity ◽

Medicinal Plant ◽

Plant Extracts ◽

Xanthomonas Campestris ◽

Medicinal Plant Extracts

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Antibacterial activity of fractions from three Chumash medicinal plant extracts and in vitro inhibition of the enzyme enoyl reductase by the flavonoid jaceosidin

Natural Product Research ◽

10.1080/14786419.2016.1217201 ◽

2016 ◽

Vol 31 (6) ◽

pp. 707-712 ◽

Cited By ~ 6

Author(s):

Brittany J. Allison ◽

Mark C. Allenby ◽

Shane S. Bryant ◽

Jae Eun Min ◽

Mark Hieromnimon ◽

...

Keyword(s):

Antibacterial Activity ◽

Medicinal Plant ◽

Plant Extracts ◽

Enoyl Reductase ◽

Medicinal Plant Extracts ◽

In Vitro Inhibition

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Antibiotic sensitivity and in vitro antimicrobial activity of plant extracts to pseudomonas fluorescens isolates collected from diseased fish

International Journal of Natural Sciences ◽

10.3329/ijns.v1i4.9733 ◽

1970 ◽

Vol 1 (4) ◽

pp. 82-88 ◽

Cited By ~ 5

Author(s):

MJ Foysal ◽

MM Rahman ◽

M Alam

Keyword(s):

Antibacterial Activity ◽

Pseudomonas Fluorescens ◽

Plant Extracts ◽

Antibiotic Sensitivity ◽

Diffusion Method ◽

Biochemical Tests ◽

Leaf Extracts ◽

Sensitivity Pattern ◽

Medicinal Plant Extracts

Studies were conducted to identify Pseudomonas fluorescens isolates from a collection of bacteria isolated from bacterial haemorrhagic septicaemia infected carp and catfish, evaluate their antibiotic sensitivity pattern and screen the antibacterial activity of some medicinal plant extracts against the isolates.. A total of 10 isolates were identified as P. fluorescens by morphological, physiological and biochemical tests. In vitro antibiotic sensitivity test of the P. fluorescens isolates were conducted by disc diffusion method for seven antibiotics where, all of the isolates were found to be sensitive only against streptomycin and gentamycin but, most of the isolates (80%) were found resistant to chloramphenicol (C). Moreover, eighty percent of the isolates showed resistance to multiple antibiotics. A total of 118 plant extracts were screened for their antibacterial activity against the P. fluorescens isolates where the isolates exhibited sensitivity to 30 samples. Leaf extracts of Tamarindus indicus, Terminalia chebula, Citrus aurantifolia, Eugenia caryophyllata and Spondias pinnata were found to inhibit the growth of all of the P. fluorescens isolates. DOI: http://dx.doi.org/10.3329/ijns.v1i4.9733 IJNS 2011 1(4): 82-88

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Biological activity from indigenous medicinal plants of Mauritius

Pure and Applied Chemistry ◽

10.1351/pac200577010041 ◽

2005 ◽

Vol 77 (1) ◽

pp. 41-51 ◽

Cited By ~ 19

Author(s):

A. Gurib-Fakim ◽

H. Subratty ◽

F. Narod ◽

J. Govinden-Soulange ◽

F. Mahomoodally

Keyword(s):

Medicinal Plant ◽

Plant Extracts ◽

Biological Properties ◽

Pharmacological Properties ◽

Plant Materials ◽

In Vivo Screening ◽

Medicinal Plant Extracts ◽

Minor Ailments

The Mauritian population has a long tradition in the use of ethno-medicine, and the practice is still strong, especially in the treatment of minor ailments. Such interest stems from an existing culture, and many “tisanes” are still prepared from plant materials and sold in several markets around the island.This paper will focus on the various chemical/biological screening techniques currently being used to evaluate the biological properties of medicinal plant extracts. Particular emphasis will be put on extraction and various screening for biological/pharmacological properties. Due consideration will be given to the pharmacological approaches that utilize different animal models for the in vitro and in vivo screening of medicinal plant extracts.

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