scholarly journals Phytochemical Investigation and Anti-Microbial Activity of Clausena anisata on Cariogenic and Periodontopathic Bacteria

2020 ◽  
pp. 11-25
Author(s):  
Ashu Michael Agbor ◽  
Kuete Pierre Fotsing ◽  
Suzy Hermine Dountio ◽  
Ntungwen Charles Fokunang ◽  
Sudeshni Naidoo
Keyword(s):  
Antibacterial Activity ◽  
Public Health Problem ◽  
Fusobacterium Nucleatum ◽  
Stem Bark ◽  
Bark Extract ◽  
Major Public Health Problem ◽  
Bacteriostatic Activity ◽  
Oral Infections ◽  
Phytochemical Investigation ◽  
Stem Bark Extract

Clausen aanisata is used in African traditional medicine to treat a variety of infectious and parasitic diseases. Infectious diseases are a major public health problem especially in developing countries where resistance to commonly used antibiotics is growing exponentially. The objective of this study was to evaluate the antibacterial activity of Clausena anisata on cariogenic and periodonthopatic bacteria. This was a laboratory experimental study using macerated hydroethanolic extracts of the stem and leaves of Clausena anisata in a water-ethanol mixture (30:70) for 48 hours. Phytochemical screening revealed flavonoids, tannins, alkaloids, coumarins, phenols, triterpenes and saponosides, these being more abundant in the leaves. The antibacterial activity of the hydroethanolic extracts was evaluated against different clinically isolated strains of three Gram negative (Aggregatibacter actinomycetemcomitan, Fusobacterium nucleatum and Prevotella intermedia) and two Gram positive (Streptococcus mutans and Latobacillusspp) bacteria. Polyphenols found more in the leaves extract was estimated at 62.8 mgTAE/g against 36.8 mgTAE/g in the stem bark extract. The study revealed that the leaves extract had bactericidal and bacteriostatic activity on isolated strains of Aggregatibacter actinomycetemcomitan and Fusobacterium nucleatum being the most susceptible with MICs of 50 mg/ml whereas the stem bark showed bacteriostatic activity on all isolated strains with Aggregatibacter actinomycetemcomitan being the most susceptible with MIC of 50 mg/ml. The antimicrobial action of the plant could be exploited in formulation of mouth washes and other medications in the management of oral infections like periodontitis and tooth dacay.

scholarly journals Comparative Study of Ethanolic Wild African Nutmeg (Pycnanthus angolensis (Welw.) Stem Bark Extract Potentials and Selected Conventional Toothpaste against Hidden Resident Mouth Cavity Microfora

2020 ◽  
pp. 10-36
Author(s):  
Mouth cavity Microfora. ◽  
Teniola Temitayo Mary
Keyword(s):  
Antibacterial Activity ◽  
Streptococcus Mutans ◽  
Frequency Distribution ◽  
Stem Bark ◽  
Diffusion Method ◽  
Bark Extract ◽  
Percentage Frequency ◽  
Mouth Cavity ◽  
Stem Bark Extract ◽  
Streptococcus Ratti

The aim of the study is to evaluate and compare the antibacterial activity of ethanolic stem extract of (Wild African nutmeg) Pycnanthus angolensis (Welw.) and some commercially available toothpaste against bacteria isolated from the hidden resident mouth cavity microfora. Bacteria were isolated from swabs of apparently healthy individuals and were identified using Staining procedure biochemical tests and the use of Bergey’s manual of bacteria identification  The assay for antibacterial activity of Pycnanthus angolensis stem bark extract and the four toothpastes were determined using agar well diffusion method. The Gram positive bacteria isolated were Streptococcus sangus, Streptococcus ratti, Stomatococcus mucilaginous., Peptostreptococcus  sp., and Streptococcus mutans and the Gram negative bacteria were Veillonella atypical, Veillonella parvula, Veillonella dispar and Acidiaminococcus sp. Oral B toothpaste showed maximum efficacy of inhibition with inhibition zone diameter as wide as 20 mm at 100 mg/ml. Percentage frequency distribution of antibacterial activity of conventional toothpaste (Close-up) against hidden resident mouth cavity microfora depicts Acidaminococcus sp.13%, Veillonella parvula (10%), Veillonella dispar (12%), Peptostreptococcus  sp.(12%), Stomatococcus mucilaginous.(9%), Streptococcus ratti (13%), Veillonella atypical (11%), Streptococcus sangus (9%) and Streptococcus mutans (11%), Percentage frequency distribution of antibacterial activity of conventional toothpaste (Oral B toothpaste) against hidden resident mouth cavity microfora reveals Acidaminococcus sp.(11%,) Veillonella dispar (11%), Veillonella parvula (10%), Peptostreptococcus sp. (12%), Stomatococcus mucilaginous.(15%), Streptococcus ratti (11%), Veillonella atypical (8%), Streptococcus sangus (10%),  and Streptococcus mutans (12%), Percentage frequency distribution  of antibacterial activity of conventional toothpaste (MyMy toothpaste) against hidden resident mouth cavity microfora depicts Acidaminococcus sp.(12%), Veillonella dispar (9%), Veillonella parvula (8%), Peptostreptococcus sp.(10%), Stomatococcus mucilaginous.(16%), Streptococcus ratti (9%), Veillonella atypical (15%),Streptococcus sangus (9%) and Streptococcus mutans (12%), Percentage frequency distribution of antibacterial activity of conventional toothpaste (Olive toothpaste) against hidden resident mouth cavity microfora shows Acidaminococcus sp.(9%), Veillonella dispar (10%), Veillonella parvula (10%), Peptostreptococcus sp.(12%), Stomatococcus mucilaginous.(13%), Streptococcus ratti (10%) ,Veillonella atypical (17%), Streptococcus sangus (7%),  and Streptococcus mutans (12%). Pycnanthus Angolensis stem bark extract inhibited the growth of the oral bacterial isolates with of zones of inhibition diameter ranging from 6 mm to 17 mm at a concentration of 100mg/ml. Secondary metabolite (Phytochemical) screening shows the presence of flavonoids, tannins, saponins, alkaloids, reducing sugars, steroid, phenol, terpenoid, pyrrolozidine alkaloid, glycoside and cardiac glycoside with glycoside and terpenoid most present. However, anthraquinones and volatile oil were absent. With menial antibacterial activity, P. angolensis can be use in the formulation of herbal toothpaste. It should be advocated that Pycnanthus angolensis should be added to our convention toothpaste to improve the functional ingredient of the toothpaste and Plant-based traditional knowledge has become a recognized tool in search for new sources of drugs. It is clear that the use of these herbal plants can offer a platform for further research.

Antimicrobial triterpenes from the stem bark of Crossopteryx febrifuga

2015 ◽  
Vol 70 (7-8) ◽  
pp. 169-173 ◽  
Author(s):  
Jean Rodolphe Chouna ◽  
Jean-de-Dieu Tamokou ◽  
Pépin Nkeng-Efouet-Alango ◽  
Bruno Ndjakou Lenta ◽  
Norbert Sewald
Keyword(s):  
Candida Parapsilosis ◽  
Enterobacter Aerogenes ◽  
Stem Bark ◽  
Bark Extract ◽  
Dioic Acid ◽  
Antibacterial And Antifungal Activities ◽  
Phytochemical Investigation ◽  
Stem Bark Extract ◽  
Antibacterial And Antifungal

Abstract Phytochemical investigation of the stem bark extract of Crossopteryx febrifuga resulted in the isolation of epimeric mixtures of 3β-urs-12,20(30)-diene-27,28-dioic acid and 18-epi-3β-urs-12,20(30)-diene-27,28-dioic acid (1), as well as: 3β-D-glucopyranosylurs-12,20(30)-diene-27,28-dioic acid and 18-epi-3β-D-glucopyranosylurs-12,20(30)-diene-27,28-dioic acid (2), together with some known compounds such as the monoglyceride of palmitic acid, as well as β-sitosterol and its glucoside. The structures of the isolated compounds were determined by application of spectroscopic methods. The MeOH extract and compounds 1 and 2 were examined for antimicrobial activity in in vitro assays against bacteria (Enterobacter aerogenes ATCC13048, Escherichia coli ATCC8739, Klebsiella pneumoniae ATCC11296, Staphylococcus aureus) and fungi (Candida parapsilosis, Candida albicans ATCC 9002 and Cryptococcus neoformans IP 90526). The tested samples showed selective activities. The antibacterial and antifungal activities of compound 2 (MIC=8–64 μg/mL) were in some cases equal to or even higher than those of the respective reference drugs chloramphenicol (MIC=16– 64 μg/mL) and nystatin (MIC=128–256 μg/mL).

Antibacterial effects of black mulberry (Morus nigra) stem bark extract on Streptococcus mutans

2021 ◽  
pp. 4399-4402
Author(s):  
Diah Lia Aulifa ◽  
Sakinah Haque ◽  
Hesti Riasari ◽  
Arif Budiman
Keyword(s):  
Antibacterial Activity ◽  
Streptococcus Mutans ◽  
Morphological Changes ◽  
Stem Bark ◽  
Antimicrobial Activities ◽  
Bark Extract ◽  
Ion Leakage ◽  
Bacterial Cells ◽  
Morus Nigra ◽  
Stem Bark Extract

Secondary metabolite compounds from Morus nigra (MN), has been shown to have antioxidant and antimicrobial activities. moreover, phenolics and flavonoids contained in this species are partly responsible for those activities. This study aims to evaluate the mode of action of MN stem bark extract and its antibacterial activity against Streptococcus mutans. The stem bark of MN was macerated using ethanol as a solvent for 72 h. Furthermore, the antibacterial activities of the extract were evaluated using Agar diffusion and microdilution methods, by determining the zone of inhibition and the minimum inhibitory concentration (MIC). Scanning electron microscopy (SEM) was used to observe the morphological changes induced by the extract. The protein and ion leakage from the bacterial cells were analyzed spectrophotometrically. The extract exhibited antibacterial activity against Streptococcus mutans, at a MIC value of 8mg/mL. Furthermore, it discovered via SEM that at 4xMIC, this extract could damage the membrane cell of Streptococcus mutans. Finally, protein and ion leakage were observed in bacterial cells of Streptococcus mutans induced with this extract. MN stem bark extract is a potential herbal medicine, which has antibacterial activity against Streptococcus mutans.

scholarly journals Stigmasterol and Stigmasterone from Methanol Extract of Calophyllum soulattri Burm. F. Stem Bark

2021 ◽  
Vol 24 (4) ◽  
pp. 108-113
Author(s):  
Surya Dewi Marliyana ◽  
Fajar Rakhman Wibowo ◽  
Desi Suci Handayani ◽  
Triana Kusumaningsih ◽  
Venty Suryanti ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Methanol Extract ◽  
Biological Activities ◽  
Stem Bark ◽  
Bark Extract ◽  
Solvent Fractionation ◽  
Phytochemical Investigation ◽  
Stem Bark Extract ◽  
Flash Column Chromatography ◽  
Vacuum Liquid Chromatography

Stigmasterol and Stigmasterone from Methanol Extract of Calophyllum soulattri Burm. F. Stem Bark. Calophyllum soulattri Burm. F. has been widely used for herbal medicine. Phytochemical investigation of C. soulattri contains a secondary metabolite of the steroid class. Steroid compounds have various biological activities, such as anti-inflammatory, antioxidant, antiproliferative, antibacterial, antimalarial, and anticancer. Two secondary metabolites steroids have been isolated and identified from the stem bark extract of C. soulattri. Isolation was carried out through the extraction (maceration), fractionation, and purification stages. Maceration is carried out using methanol as a solvent. Fractionation was carried out by vacuum liquid chromatography (VLC), and purification was by flash column chromatography. Identification of combined fractions and determination of pure isolates were used through thin-layer chromatography (TLC). The solvent used in the chromatography methods was a mixture of n-hexane and ethyl acetate. The structure isolates were identified by FTIR, 1H NMR, and 13C NMR and compared with literature data. Secondary metabolites steroids that have been isolated are identical compounds to stigmasterol and stigmasterone.

scholarly journals Phytochemical, Antimicrobial and Antiplasmodial Investigations of Terminalia brownii

2013 ◽  
Vol 8 (6) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Francis Machumi ◽  
Jacob O. Midiwo ◽  
Melissa R. Jacob ◽  
Shabana I. Khan ◽  
Babu L. Tekwani ◽  
...  
Keyword(s):  
Ellagic Acid ◽  
Soluble Fraction ◽  
2D Nmr ◽  
Stem Bark ◽  
Bark Extract ◽  
Spectroscopic Methods ◽  
Group 4 ◽  
Phytochemical Investigation ◽  
Stem Bark Extract ◽  
Ellagic Acid Derivatives

Phytochemical investigation of the ethyl acetate-soluble fraction of stem bark extract of an African medicinal plant Terminalia brownii led to the isolation of a new oleanane-type triterpenoid, along with seven known triterpenoids, seven ellagic acid derivatives, and 3- O-β-D-glucopyranosyl-β-sitosterol. The new compound was identified using spectroscopic methods, notably 1D- and 2D NMR, as 3β,24- O-ethylidenyl-2α,19α-dihydroxyolean-12-en-28-oic acid. The isolated compounds were evaluated for their antimicrobial and antiplasmodial activities. Two compounds with a galloyl group (4 and 6) were found to be active against chloroquine sensitive (D6) and chloroquine resistant (W2) strains of Plasmodium falciparum, whereas three ellagic acid derivatives (5–7) were found active against three species of fungi and one species of bacteria.

Sign in / Sign up

Export Citation Format

Share Document