scholarly journals Antimicrobial activity of methanolic extracts of selected marine macroalgae against some pathogenic microorganisms

2016 ◽  
Vol 4 (5) ◽  
pp. 364-367
Author(s):  
Ehab Omer Abdalla ◽  
◽  
Mohammed Taha Abdalla Shigidi ◽  
Hassan Khalid Elsubki ◽  
Nahid Abdel Rahim Osman ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Marine Macroalgae ◽  
Pathogenic Microorganisms ◽  
Methanolic Extracts

Antimicrobial activity of essential oils onto pathogenic microorganisms of interest to dentistry

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
VR Santos ◽  
VA Noronha ◽  
JC Silva ◽  
FF Silva ◽  
TF Machado ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
Pathogenic Microorganisms

scholarly journals Synergistic Effect of Plant Extracts on Endodontic Pathogens Isolated from Teeth with Root Canal Treatment Failure: An In Vitro Study

Antibiotics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 552
Author(s):  
Suraj Arora ◽  
Shahabe Saquib ◽  
Youssef Algarni ◽  
Mohammed Kader ◽  
Irfan Ahmad ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Synergistic Effect ◽  
Enterococcus Faecalis ◽  
Plant Extracts ◽  
Azadirachta Indica ◽  
Inhibitory Concentration ◽  
Pathogenic Microorganisms ◽  
Salvadora Persica ◽  
Actinomyces Naeslundii

Background and objectives: This study aimed to evaluate the synergistic antimicrobial activity of extracts obtained from Salvadora persica (Miswak), Commiphora molmol (myrrh) and Azadirachta indica (neem) in combination with commercially available antimicrobial agents: penicillin, tetracycline, ofloxacin and fluconazole on endodontic pathogens such as Enterococcus faecalis, Streptococcus mitis, Actinomyces naeslundii and Candida albicans. Materials and Methods: Microbiological samples from the root canals of the teeth undergoing retreatment were taken using sterile paper points kept at full length in the canal for 30 seconds. The disc diffusion method was used to check the susceptibility of microbes to the plant extracts and antimicrobials by measuring the diameter of the inhibition zones. Against the microbes, minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC)/minimum fungicidal concentration (MFC) of the plant extracts were assessed. The fractional inhibitory concentration index (FICI) was used to estimate the synergistic effect of plant extracts combined with antimicrobials against the resistant endodontic microbes. Results: The findings clearly indicate the effectiveness of all the three plant extracts, Commiphora molmol, Azadirachta indica, Salvadora persica, against all the experimental pathogenic microorganisms except for the ineffectiveness of Azadirachta indica, Salvadora persica against Candida albicans. Maximum antimicrobial activity was displayed by Azadirachta indica against Enterococcus faecalis (MIC = 0.09 ± 1.2 mg/mL, MBC = 0.78 ± 1.25 mg/mL) and the minimum antimicrobial activity was displayed by Commiphora molmol against Actinomyces naeslundii (MIC = 12.5 ± 3.25 mg/mL, MBC = 100 ± 3.75 mg/mL). The best synergy was displayed by Commiphora molmol with fluconazole against Candida albicans (FICI = 0.45). Conclusions: The current study delineates the variable antimicrobial activity of plant extracts against the experimental endodontic pathogenic microorganisms. Plant extracts in conjunction with various antimicrobials can be valuable aids in combating relatively resistant endodontic microorganisms that have been the cause of worry in recent years, leading to failure even in treatment procedures following all required protocols.

Antimicrobial activity of methanolic extracts of indigenous traditional Indian folk Medicinal Plant, Gnaphalium polycaulon

2015 ◽  
Vol 9 (1) ◽  
pp. 39 ◽  
Author(s):  
Thayumanavan Thangavelu ◽  
Jinu Udayabhanu ◽  
SenthilMurugan Thangavel ◽  
Shanmugapriya Kaminidevi
Keyword(s):  
Antimicrobial Activity ◽  
Medicinal Plant ◽  
Methanolic Extracts

PRELIMINARY PHYTOCHEMICAL AND ANTIMICROBIAL SCREENING OF UDHARA VAYUHARA CHURNA

INDIAN DRUGS ◽  
2021 ◽  
Vol 58 (06) ◽  
pp. 64-67
Author(s):  
Maruthi T. Ekbote ◽  
◽  
Rajashekar K. V ◽  
Shankarappa L ◽  
Bharathi D. R. ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Methanolic Extract ◽  
Acorus Calamus ◽  
Aqueous Extracts ◽  
Piper Longum ◽  
Polyherbal Formulation ◽  
Methanolic Extracts ◽  
Phytochemical Investigation

Ayurvedic medicines are being used increasingly to fight or prevent common diseases. Udhara vayuhara churna is a polyherbal formulation containing Piper longum (Piperceae) Zingiber officinalis (Zingiberaceae), Elettaria cardamom (Zingiberaceae), Plumbago zeylanica (Plumbaginaceae), Carum carvi (Umbelliferae), Acorus calamus (Araceae) and Embilica officinalis (Euphorbiaceae). Methanolic and aqueous extracts of Udhara vayuhara churna were screened for their antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Aspergillus niger and Candida albicans. The results of antimicrobial activity of aqueous and methanolic extracts of the Udhara vayuhara churna indicated that methanolic extract inhibited the growth of one or more test pathogens than aqueous extract. Udhara vayuhara churna formulation extracts showed a broad spectrum of antimicrobial activity. Phytochemical investigation revealed the presence of tannins, saponins, alkaloids, glycosides, flavonoids and essential oils. This may be due to the multifunctional effect of all the seven plant ingredients of Udhara Vayuhara churn.

Antimicrobial activity of Pycnarrhena cauliflora (Miers.) Diels. methanol extract

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Eti Nurwening Sholikhah ◽  
Maulina Diah ◽  
Mustofa ◽  
Masriani ◽  
Susi Iravati ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Methanolic Extract ◽  
Biological Activities ◽  
Positive Control ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Methanolic Extracts

Pycnarrhena cauliflora (Miers.) Diels., local name sengkubak, is one of indigenous plants from West Kalimantan that has been used as natural flavor. Pycnorrhena cauliflora is one of species of Menispermaceae family which is rich in bisbenzylisoquinoline alkaloids. This alkaloids are known to have various biological activities including antiprotozoal, antiplasmodial, antifungal and antibacterial activities. This study aimed to investigate antimicrobial activity of  the P. cauliflora (Miers.) Diels. methanolic extracts against gram-positive and gram-negative bacteria. The methanolic extract of P. cauliflora (Miers.) Diels., root, leaf and stem were prepared by maceration. The disk-diffusion method was then used to determine the antimicrobial activity of the extracts against Streptococcus pyogenes, S. mutants, Staphylococcus aureus, S. epidermidis, Salmonella typhi, Shigella flexneri, Pseudomonas aeruginosa and Escherichia coli after 18-24 h incubation at 37 oC. Amoxicillin was used as positive control for gram-positive bacteria and ciprofloxacin was used as gram-negative bacteria. The inhibition zones were then measured in mm. Analysis were conducted in duplicates. The results showed in general the methanolic extracts of P. cauliflora (Miers.) Diels. root (inhibition zone diameter= 10-23 mm) were more active than that leaf (0-15 mm) and stem (0-17 mm) extracts against gram-positive bacteria. The zone inhibition diameter of amoxicillin as positive control was 8-42 mm. In addition, the methanolic extracts of P. cauliflora (Miers.) Diels. root (12-17 mm) were also more active than that leaf (0-12 mm) and stem (0-12 mm) extracts against gram-negative bacteria. The zone inhibition diameter of ciprofloxacin as positive control was 33-36 mm. In conclusion, the methanolic extract of P. caulifloria (Miers.) Diels. root is the most extract active against both gram-positive and gram-negative bacteria. Further study will be focused to isolate active compounds in the methanolic extract of the root.

scholarly journals AN IN VITRO INVESTIGATION OF ANTIMICROBIAL EFFICACY OF EUPHORBIA HIRTA AND MURRAYA KOENIGII AGAINST SELECTED PATHOGENIC MICROORGANISMS

2018 ◽  
Vol 11 (5) ◽  
pp. 359 ◽  
Author(s):  
Divya Gupta ◽  
Mukesh Kumar ◽  
Vishal Gupta
Keyword(s):  
Antimicrobial Activity ◽  
Inhibitory Activity ◽  
Diffusion Method ◽  
Synergistic Activity ◽  
Pathogenic Microorganisms ◽  
Disc Diffusion ◽  
Murraya Koenigii ◽  
Euphorbia Hirta ◽  
In Vitro Investigation ◽  
Antibiotics Susceptibility

Objective: To investigate the solvent-dependent antimicrobial activity and phytochemical analysis of extracts of Euphorbia hirta (leaves and flowers) and Murraya koenigii (leaves), as well as to evaluate the synergistic activity of these medicinal extracts with suitable antibiotic discs and antibiotics susceptibility of selected pathogenic microorganisms.Methods: The antimicrobial activity of the medicinal extracts was screened through agar well diffusion method and antibiotics susceptibility of selected microorganisms was investigated using disc diffusion method. A combined agar well diffusion and disc diffusion methods were used for the determination of synergistic activities of the extracts with antibiotic discs.Results: Among the different solvents, ethanol had maximum zone of inhibition against the test pathogens. Ethanolic leaf extracts of E. hirta exhibited the highest inhibitory activity against Candida albicans and Staphylococcus aureus with minimum inhibitory concentration value of 12.5 mg/mL and 25.0 mg/mL, respectively. Antimicrobial assay revealed that E. hirta extracts were active against all tested Gram-negative bacteria. However, none of the plant extracts had inhibitory activity against Gram-positive bacterium Propionibacterium acnes. Phytochemical screening for both the extracts from E. hirta revealed the presence of steroid, tannin, terpenoids, carbohydrates, alkaloid, flavonoid, diterpene, and glycoside, whereas M. koenigii extract was rich in saponins, protein, steroid, tannin, carbohydrates, alkaloid, flavonoid, and glycoside.Conclusion: The present study proposes that E. hirta and M. koenigii extracts are excellent sources of natural bioactive compounds that could be used as potent antimicrobial drugs to counter the emerging problem of antibiotic resistance of pathogenic microorganisms.

scholarly journals PRELIMINARY STUDIES ON ANTIFUNGAL AND ANTIBACTERIAL ACTIVITY OF ALUM AS MEDICINE PREPARATION FOR VAGINAL DISCHARGE

2020 ◽  
Vol 8 (6) ◽  
pp. 188-195
Author(s):  
Titik Taufikurohmah ◽  
Fadlilah Gita Shalli ◽  
Suyatno ◽  
Eka Apriyosa
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Vaginal Discharge ◽  
Disk Diffusion ◽  
Pathogenic Microorganisms ◽  
Clear Zone ◽  
Pathogenic Microbes

Background: Alum has many functions in various fields such as an astringent substance has the potential to inhibit the growth of microorganisms. This study aims to know the antifungal and antibacterial activity against C.albicans and N.gonorrheae which can be used as medicine preparation for vaginal discharge. These microbes are pathogenic microorganisms commonly found in the vagina. Method: The method used is the disk diffusion which is based on a clear zone area to determine the inhibition. Variation concentration of alum used is 2.5; 5; 10; 15; 20 and 25%. Results: The results showed that alum has antimicrobial activity against pathogenic microbes, namely C.albicans and N.gonorrhea. This is indicated by the presence of clear zones formed in the area of paper disks. Concentrations of 20% and 25% have moderate antimicrobial activity. An increase in concentration in alum shows that the diameter of the clear zone that is formed is also getting bigger. Conclusions: In this study, it can be concluded that alum is proven to have antifungal and antibacterial activity against pathogenic microbes that live in the vagina. So, it has the potential to become one of the medicine compositions for vaginal discharge.

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