scholarly journals Phytochemical Composition and Antimicrobial Properties of the Seeds of Khaya senegalensis (Desc.) A. Juss.

2014 ◽  
Keyword(s):  
Antimicrobial Properties ◽  
Phytochemical Composition ◽  
Khaya Senegalensis

scholarly journals Evaluation of the phytochemical composition and antimicrobial properties of two aromatic plants used in the production of sweet wort and tchapalo, two artisanal beverages from Côte d'Ivoire

2021 ◽  
Vol 14 (9) ◽  
pp. 3215-3230
Author(s):  
Dolourou Diarrassouba ◽  
Solange Aka ◽  
Karamoko Ouattara ◽  
Issa Bagre ◽  
Nanga Yesse Zinzindorf ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Properties ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Aromatic Plants ◽  
Adansonia Digitata ◽  
Phytochemical Composition ◽  
Methanolic Extracts ◽  
Phytochemical Compounds ◽  
Extraits Aqueux

The search for new antimicrobial molecules from natural sources is an opportunity to preserve food. The objective of this study is to evaluate the phytochemical composition and antimicrobial properties of the leaves of Adansonia digitata (Bombacaceae) and the bark of Grewia venusta (Tilaceae), two aromatic plants used in the production of sweet must and tchapalo. Phytochemical screening from the aqueous, decocted and methanolic extracts of these plants was performed using standard colorimetric methods. Antimicrobial activity was also evaluated on 21 strains using the well diffusion method. Minimum Inhibitory Concentrations (MIC) and Bactericides were determined respectively by the liquid macro-dilution and agar plating methods. Results showed the presence of tannins, triterpenoids, cardiotonic glycosides and saponins in these extracts. All extracts were active on Staphylococcus aureus ATCC25923 with inhibition diameters ranging from 10.33±1 to 20.3±1.5 mm. The methanolic extracts had the lowest MICs (12.5 mg/mL), with bactericidal and/or fungicidal activity on most of the microbial strains tested. These results confirm the antimicrobial activities of the phytochemical compounds of these plants that could play the role of stabilizer and preservative of sweet wort and tchapalo. La recherche de nouvelles molécules antimicrobiennes à partir de sources naturelles est une opportunité pour conserver les aliments. L’objectif de cette étude est d’évaluer la composition phytochimique et les propriétés antimicrobiennes des feuilles de Adansonia digitata (Bombacaceae) et des écorces de Grewia venusta (Tilaceae), deux plantes aromatiques utilisées dans la production du moût sucré et du tchapalo. Le criblage phytochimiques à partir des extraits aqueux, décoctés et méthanoliques de ces plantes a été réalisé selon les méthodes standards de colorimétries. L’activité antimicrobienne a été également évaluée sur 21 souches en utilisant la méthode de diffusion en puits. Les Concentrations Minimales Inhibitrices (CMI) et Bactéricides ont été déterminées respectivement par les méthodes de macro-dilution en milieu liquide et ensemencement sur milieu gélosé. Les résultats ont montré la présence de tannins, de triterpénoïdes, de cardiotoniques glycosides et de saponines dans ces extraits. Tous les extraits ont été actifs sur Staphylococcus aureus ATCC25923 avec des diamètres d’inhibition allant de 10,33±1 à 20,3± 1,5 mm. Les extraits méthanoliques ont présenté les CMI les plus faibles (12,5 mg/mL), avec une activité bactéricide et/ou fongicide sur la plupart des souches microbiennes testées. Ces résultats confirment les activités antimicrobiennes des composés phytochimiques de ces plantes qui pourraient jouer le rôle de stabilisant et conservateur du moût sucré et du tchapalo.

scholarly journals Phytochemical and antimicrobial properties of the methanolic extracts of Bombax buonopozense leaf and root

2012 ◽  
Vol 2 (3) ◽  
pp. 190-194 ◽  
Author(s):  
Godwin C Akuodor ◽  
Augustine D Essien ◽  
Jemilat A Ibrahim ◽  
Augustine Bassey ◽  
Joseph L Akpan ◽  
...  
Keyword(s):  
Bacterial Infections ◽  
Antimicrobial Properties ◽  
Diffusion Method ◽  
Root Extract ◽  
Phytochemical Screening ◽  
Medical Sciences ◽  
Active Components ◽  
Phytochemical Composition ◽  
Methanolic Extracts ◽  
Standard Procedures

Objective: The leaf and root of Bombax buonopozense which have some ethnomedicinal applications were subjected to phytochemical screening and antimicrobial activity against some disease causing microorganisms. Material & Methods: The phytochemical composition was evaluated using standard procedures. Susceptibility of these clinical isolates (Staphylococcus aureus, Bacillus subtilis, Klebsiella pneumonae, Proteus spp. and Escherichia coli) to the extracts was determined using the agar diffusion method. Results: Phytochemical screening revealed the presence of alkaloids, flavonoids, tannins, saponins, terpenoids, steroids, phlobatannins, anthraquinones and carbohydrates (mostly in root). The root extract demonstrated antibacterial activity against all the organisms tested, while the leaf extract had activity on S. aureus and B. subtilis only. Conclusion: The findings indicate that the root extract contain the most active components which may be used to source antibiotic substances for possible treatment of bacterial infections. DOI: http://dx.doi.org/10.3126/ajms.v2i3.4222 Asian Journal of Medical Sciences 2 (2011) 190-194 

scholarly journals Qualitative and quantitative phytochemical composition, antimicrobial activity, and brine shrimp cytotoxicity of different solvent extracts of Acanthus polystachyus, Keetia gueinzii, and Rhynchosia elegans

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
James Kiamba Mailu ◽  
Joseph Mwanzia Nguta ◽  
James Mucunu Mbaria ◽  
Mitchel Otieno Okumu
Keyword(s):  
Antimicrobial Agents ◽  
Fungal Infections ◽  
Antimicrobial Properties ◽  
Antimicrobial Activities ◽  
Artemia Salina ◽  
Root Bark ◽  
Qualitative And Quantitative ◽  
Phytochemical Composition ◽  
Broth Microdilution Method ◽  
Root Tuber

Abstract Background The root, root bark, and root tubers of Acanthus polystachyus, Keetia gueinzii, and Rhynchosia elegans are used for managing bacterial and fungal infections among the Luo community of Kisumu East Sub County in Kenya. However, data on the efficacy of these plants against common bacterial and fungal pathogens is not available. The safety of these plants is also not known. This study aimed to investigate the phytochemical composition, antimicrobial properties, and safety of different solvent extracts of the roots, root barks, and root tubers of Acanthus polystachyus, Keetia gueinzii, and Rhynchosia elegans. The broth microdilution method evaluated the antimicrobial activities of the root, root bark, and root tuber extracts (water, acetone, and methanol) of Acanthus polystachyus, Keetia gueinzii, and Rhynchosia elegans. Gram-positive (Bacillus cereus, Staphylococcus aureus), gram-negative (Escherichia coli), and fungal (Candida albicans) microorganisms were used in the evaluation. The safety of the extracts was evaluated in Artemia salina. The phytochemical composition of the extracts was determined using qualitative and quantitative assays. Results In general, the extracts of Acanthus polystachyus, Keetia gueinzii, and Rhynchosia elegans displayed poor antimicrobial properties relative to conventional antimicrobial agents including Amoxicillin, Gentamicin, and Nystatin. The aqueous extract of Acanthus polystachyus and the aqueous, acetone, and methanol extracts of Keetia gueinzii were safe in Artemia salina but all other extracts were cytotoxic to Artemia salina. Conclusions These findings suggest that the use of the roots, root barks, and root tubers of Acanthus polystachyus, Keetia gueinzii, and Rhynchosia elegans is limited by poor antimicrobial efficacy and cytotoxicity.

scholarly journals Phytochemical composition, antioxidant and antimicrobial properties of raspberry fruit, pulp, and marc extracts

2013 ◽  
Vol 11 (4) ◽  
pp. 334-342 ◽  
Author(s):  
R. Bobinaitė ◽  
P. Viškelis ◽  
A. Šarkinas ◽  
P.R. Venskutonis
Keyword(s):  
Antimicrobial Properties ◽  
Fruit Pulp ◽  
Phytochemical Composition

scholarly journals Phytochemical Composition and Antibacterial Activities of the Ethyl Acetate Leaf Extract of Ocimum basilicum

2020 ◽  
Author(s):  
Japheth Wambani Rapando ◽  
Mathew Piero Ngugi ◽  
Margaret Muturi ◽  
James Opiyo Ogutu
Keyword(s):  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Leaf Extract ◽  
Synergistic Effects ◽  
Antimicrobial Properties ◽  
Antibacterial Activities ◽  
Ocimum Basilicum ◽  
Zone Of Inhibition ◽  
Phytochemical Composition

Abstract IntroductionAntibiotic resistance is a serious threat to humankind. There is need for the development of new therapeutic options. Ocimum basilicum has been used traditionally as a medicinal herb against infectious diseases and as a food additive. ObjectiveThis study aimed at evaluating the phytochemical composition and in vitro antibacterial activities of the ethyl acetate leaf extract of Ocimum basilicum. MethodsOcimum basilicum leaves were collected from Mbeere, Embu County, Kenya and ethyl acetate extraction done at Kenyatta University. Phytochemical composition was evaluated by Gas chromatograph mass spectrophotometry while antibacterial activities were evaluated by disc diffusion and broth microdilution methods. The test microorganisms were methicillin resistant S. aureus, S. aureus, P. aeruginosa and E. coli. ResultsThe extract exhibited a broad spectrum antibacterial activity. The gram negative bacteria showed more susceptibility to the organic extract compared to the gram positive bacteria. Pseudomonas aeruginosa had the highest zone of inhibition (27.00 ± 2.00 mm), while the S. aureus isolate had the lowest zone of inhibition (24.00 ± 1.00 mm). Escherichia coli, S. aureus and MRSA species had an MIC of 62.5 mg/ml compared to P. aeruginosa with an MIC of 125mg/ml when exposed to the leaf extract. The antibacterial activity could be attributed to the synergistic effects of phytochemicals such as terpenoids, alkaloids, essential oils, fatty acids, flavonoids and aldehydes that have been known to have antimicrobial properties. A total of 30 phytochemical compounds were eluted from the extract of O. basilicum. Nootkatone, a sesquiterpenoid had the highest concentration at 20.86mg/g. The compound 1,3-Dimethyl-5-isobutylcyclohexane, a fatty acid had the lowest concentration at 0.10mg/g. ConclusionO. basilicum has antibacterial activities on the tested pathogens and can be used to treat infections. Phytochemicals with antibacterial effects in the herb can be used as lead molecules in developing new antibacterial drugs.

Phytochemical composition and antimicrobial properties of four varieties of Brassica oleracea sprouts

Food Control ◽  
2015 ◽  
Vol 55 ◽  
pp. 248-256 ◽  
Author(s):  
A.P. Vale ◽  
J. Santos ◽  
N. Melia ◽  
V. Peixoto ◽  
N.V. Brito ◽  
...  
Keyword(s):  
Brassica Oleracea ◽  
Antimicrobial Properties ◽  
Phytochemical Composition
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