scholarly journals Herbominerals and Antibacterial Activities of Allium sativum L Extracts on Pathogenic Bacteria Causing Meningitis in Sub-Saharan Africa, Zaria, Kaduna State, Nigeria

2020 ◽  
pp. 1-15
Author(s):  
Kokori Bajeh Tijani ◽  
Danjuma Nuhu Muhammed ◽  
Janet I. Ejiofor ◽  
Busayo Olayinka ◽  
Abdullahi Attah Alfa
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Meningitis ◽  
Pathogenic Bacteria ◽  
Allium Sativum ◽  
Sub Saharan Africa ◽  
Clinical Isolates ◽  
Dilution Method ◽  
Distilled Water ◽  
Phytochemical Screening

Bacterial Meningitis (BM) is the most common serious infection of the central nervous system (brain and spinal cord). This research aims to determine the mineral composition and to evaluate the in vitro antibacterial activity of the Juice Extract of Allium Sativum, Ethanolic Extract of Allium Sativum and Aqueous Extract of Allium sativum (JEAS, EEAS and AEAS). The collected bulbs of A. sativum (600 g) were washed and air dried under shade for 2 hours and the dry scaly outer covering was peeled-off to obtain the fresh garlic cloves which were then divided into three parts of 200 g each. These three portions were crushed separately for cold extraction. The first portion was homogenized and poured into a muslin cloth to squeeze out the juice, while second and third portions were homogenized and submerged into 500 ml of 96% ethanol and 500 ml of distilled water respectively for 24 hours and both filtered after thorough shaking. The antibacterial activity of bulbs of A. sativum juice, ethanolic and aqueous (JEAS, EEAS and AEAS) extracts as folkloric medicine against clinical isolates were determined using Agar well diffusion and broth dilution method. Distilled water, concentrated nitric acid (HNO3) and hydrochloric acid (HCl) were used to digest the extract, which was then heated in water bath at 90ºC and filtered to obtain the filtrate for the analytical studies for A. sativum nutritional composition and zeolite herbominerals. The micro-herbominerals with their proximate values observed pharmacologic of Silver, Manganese, Zinc, Iron and Selenium; which has biocidal properties as well as immune system to cushioning the challenges of the BM pathogens. The minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and phytochemical screening of the extracts were evaluated. The results obtained showed that the juice and ethanolic extracts were potent, inhibiting the growth of clinical isolates with zone of inhibition ranging from 14-36 mm. The extracts inhibited bacterial isolates in concentration dependant manner with MICs ranging 0.02-15 mg/ml and MBCs 0.04-5 mg/ml. Phytochemical screening of the extracts revealed the presence of alkaloids, flavonoids, anthraquinone, carbohydrates, fats and oils, steroidal ring, saponins and terpenoids. This experimental investigation has provided the scientific validation basis for the ethnomedical use of A. sativum as a remedy to treat bacterial meningitis locally as anti-infectious agent.

scholarly journals In vitro antibacterial activity of garlic (Allium sativum) and ginger (Zingiber officinale) aqueous extracts against isolates of Brucella abortus

2021 ◽  
Vol 6 (1) ◽  
pp. 064-070
Author(s):  
Ayda Ali Khalifa ◽  
Ali A ElGadal ◽  
Firooz M Youssif ◽  
Mutaman A Kehail
Keyword(s):  
Antibacterial Activity ◽  
Brucella Abortus ◽  
Pathogenic Bacteria ◽  
Allium Sativum ◽  
Zingiber Officinale ◽  
Garlic Extract ◽  
Diffusion Method ◽  
Dilution Method ◽  
Sensitivity Pattern

Microbial resistance to antibiotics has become a problem plaguing the world. Currently, interest has been focused on exploring antimicrobial properties of plants and herbs. This work aim to evaluate the antibacterial activity of garlic (Allium sativum) bulbs and ginger (Zingiber officinale) rhizome on Brucella abortus isolates. Some concentrations of garlic and ginger extracts were tested for their antibacterial activity against B. abortus isolate brought from Central Veterinary Research Laboratory (CVRL), Soba, using well diffusion method. Moreover, minimum inhibitory concentration (MIC) and minimum lethal concentration (MLC) of garlic and ginger were tested using broth dilution method. Sensitivity pattern of the conventional antibacterial against common pathogenic bacteria was tested using disc diffusion method. Aqueous extract of ginger produced dose-dependent increase in the zone of inhibition at a concentration of 15% and higher, whereas the garlic extract produced inhibition zone at a concentration of 5% and higher, i.e. B. abortus isolate showed relatively high sensitivity toward garlic extract than ginger which required a more concentrated extract to kill or inhibit B. abortus isolate that brought from (CVRL), Soba, Khartoum, Sudan. Further studies are needed to find out the efficacy, safety, and kinetic data of their active ingredients.

scholarly journals IN VITRO EVALUATION OF ANTIBACTERIAL ACTIVITY OF GARLIC ALLIUM SATIVUM AGAINST POULTRY PATHOGENS AND EFFECT OF GARLIC SUPPLEMENTATION ON DUCKLING GROWTH PERFORMANCE

2019 ◽  
Vol 57 (3B) ◽  
pp. 9 ◽  
Author(s):  
Tien Cuong Nguyen ◽  
Thi Anh Phuong Chu ◽  
Hai Van Nguyen
Keyword(s):  
Antibacterial Activity ◽  
Growth Performance ◽  
Pathogenic Bacteria ◽  
Allium Sativum ◽  
Basal Diet ◽  
Feed Consumption ◽  
Poultry Production ◽  
Feed Conversion ◽  
Garlic Powder

ABSTRACT-QMFS2019Poultry production provides source of protein and contributes an important income for Vietnamese farmers. Among the poultry in Vietnam, ducks account for 27.3% of head of poultry and even 55.7% in Mekong Delta region. Along with the development of rearing ducks, bacterial, viral and fungal diseases occurring in the two last decades induced bad effect for poultry producer. Escherichia coli, Salmonella enterica, Streptococcal or Pasteurella act as major pathogenic bacteria in duck. The aims of this study were to investigate the antibacterial activity of garlic Allium sativum against E. coli, Staphylococcus aureus, Salmonella Typhimurium and to evaluate the effect of garlic on growth performance of duck from 1-28 old-days. The results indicated that fresh garlic and dried garlic powder showed inhibitory effect against pathogenic tested strains from 2% and 4% w/v, respectively. The inhibition zones and the minimal inhibitory concentration (MIC) values of garlic extract ranged from 11.3-28.3 mm and 0.02-0.2 g/ml, respectively. After 28 days of diet with garlic supplemented, D3 (2% of fresh garlic in water) showed significantly different in weight gain (WG), feed conversion ratio (FCR), protein efficiency ratio (PER), average daily weight (ADW); whereas, D2 (2% of garlic powder in basal diet) only possessed a difference significant in feed consumption (FC) compared to the D1 (control without garlic supplementation). The obtained results demonstrated the potential of garlic application in poultry production.

Phytochemical Screening, Antibacterial and Synergistic activity of Dittrichia Viscosa Extracts against Multi-Resistant Pathogenic Bacteria

2019 ◽  
Vol 2 (1) ◽  
pp. 01-06
Author(s):  
Rhazi Fouzia
Keyword(s):  
Antibacterial Activity ◽  
Pathogenic Bacteria ◽  
Antibacterial Effect ◽  
Synergistic Activity ◽  
Phytochemical Screening ◽  
Bacterial Strains ◽  
Dittrichia Viscosa ◽  
Study Results ◽  
Ethanolic Extracts

Study contextual: Faced with the global problem of antimicrobial resistance, and the use of traditional medicine for the research of antibacterial biomolecules. Aim: our work focused on the valorization of a medicinal plant Dittrichia viscosa which has many therapeutic and culinary virtues worldwide. Methods: To do this, a phytochemical screening of the leafy stems of the plant is carried out according to a set of physicochemical reactions, as well as an in vitro evaluation of the antibacterial activity, of the aqueous and ethanolic extracts against multi-resistant bacterial strains, by microdilution technique on microplates. An evaluation of the synergistic interaction between extracts and weakened antibiotics against pathogenic bacteria was also highlighted in this study. Results: The tests revealed the richness of Dittrichia viscosa species by tannins, flavonoids, saponosides, sterols and triterpenes. As for the antibacterial effect, the MICs range from 0.858±0.29 to 66.66 ± 0.00 mg / ml and the MBCs from 4.300 ± 1.01 to 11.610 ± 2.31 mg / ml is an interesting antibacterial activity. Regarding the combination of extracts with antibiotics tested, it revealed a synergistic action inducing an amplification of the antibacterial power of Penicillin, Imipenem and Erythromycin with a rate that reaches 471%. Conclusion: The results of this study show that the aqueous and ethanolic extracts of Dittrichia viscosa have interesting and promising antibacterial activity in the pharmaceutical, food and cosmetic industries.

scholarly journals Evaluation of Antibacterial Activity of Some Traditionally Used Medicinal Plants against Human Pathogenic Bacteria

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Bishnu P. Marasini ◽  
Pankaj Baral ◽  
Pratibha Aryal ◽  
Kashi R. Ghimire ◽  
Sanjiv Neupane ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Medicinal Plants ◽  
Inhibitory Action ◽  
Pathogenic Bacteria ◽  
Cynodon Dactylon ◽  
Bacterial Species ◽  
Dilution Method ◽  
Chloroform Fraction ◽  
Ethanolic Extracts

The worldwide increase of multidrug resistance in both community- and health-care associated bacterial infections has impaired the current antimicrobial therapy, warranting the search for other alternatives. We aimed to find thein vitroantibacterial activity of ethanolic extracts of 16 different traditionally used medicinal plants of Nepal against 13 clinical and 2 reference bacterial species using microbroth dilution method. The evaluated plants species were found to exert a range ofin vitrogrowth inhibitory action against the tested bacterial species, andCynodon dactylonwas found to exhibit moderate inhibitory action against 13 bacterial species including methicillin-resistantStaphylococcus aureus, imipenem-resistantPseudomonas aeruginosa, multidrug-resistantSalmonella typhi, andS. typhimurium. The minimum inhibitory concentration (MIC) values of tested ethanolic extracts were found from 31 to >25,000 μg/mL. Notably, ethanolic extracts ofCinnamomum camphora, Curculigo orchioides, andCurcuma longaexhibited the highest antibacterial activity againstS. pyogeneswith a MIC of 49, 49, and 195 μg/mL, respectively; whereas chloroform fraction ofCynodon dactylonexhibited best antibacterial activity againstS. aureuswith a MIC of 31 μg/mL. Among all,C. dactylon, C. camphora, C. orchioides, andC. longaplant extracts displayed a potential antibacterial activity of MIC < 100 μg/mL.

scholarly journals Synthesis and In Vitro Antibacterial Activity of Quaternized 10-Methoxycanthin-6-one Derivatives

Molecules ◽  
2019 ◽  
Vol 24 (8) ◽  
pp. 1553 ◽  
Author(s):  
Na Li ◽  
Dan Liu ◽  
Jiang-Kun Dai ◽  
Jin-Yi Wang ◽  
Jun-Ru Wang
Keyword(s):  
Antibacterial Activity ◽  
Seed Germination ◽  
Pathogenic Bacteria ◽  
Dilution Method ◽  
Highly Active ◽  
Structure Activity ◽  
In Vitro Antibacterial Activity ◽  
Potential Activity ◽  
Low Cytotoxicity

Background: Based on our previous work, we found that 10-methoxycanthin-6-one displayed potential antibacterial activity and quaternization was an available method for increasing the antibacterial activity. Here, we explored the antibacterial activity of quaternized 10-methoxy canthin-6-one derivatives. Methods and Results: Twenty-two new 3-N-benzylated 10-methoxy canthin-6-ones were designed and synthesized through quaternization reaction. The in vitro antibacterial activity against three bacteria was evaluated by the double dilution method. Moreover, the structure–activity relationships (SARs) were carefully summarized in order to guide the development of antibacterial canthin-6-one agents. Two highly active compounds (6p and 6t) displayed 8-fold superiority (MIC = 3.91 µg/mL) against agricultural pathogenic bacteria R. solanacearum and P. syringae compared to agrochemical streptomycin sulfate, and showed potential activity against B. cereus. Moreover, these two compounds exhibited good “drug-like” properties, low cytotoxicity, and no inhibition on seed germination. Conclusions: This work provides two new effective quaternized canthin-6-one derivatives as candidate bactericide, promoting the development of natural-sourced bactericides and preservatives.

scholarly journals Synthesis and in vitro Antibacterial Activity of Quaternization 10-Methoxycanthin-6-one Derivatives

2019 ◽  
Author(s):  
Na Li ◽  
Jiang-Kun Dai ◽  
Dan Liu ◽  
Jin-Yi Wang ◽  
Jun-Ru Wang
Keyword(s):  
Antibacterial Activity ◽  
Natural Products ◽  
Minimum Inhibitory Concentration ◽  
Pathogenic Bacteria ◽  
Antibacterial Agents ◽  
Inhibitory Concentration ◽  
Dilution Method ◽  
In Vitro Antibacterial Activity

Natural products are an important source of antibacterial agents. Canthin-6-one alkaloids have displayed potential antibacterial activity based on our previous work. In order to improve the activity, twenty-two new 3-N-benzylated 10-methoxy canthin-6-ones were designed and synthesized through quaternization reaction. The in vitro antibacterial activity against three bacteria was evaluated by double dilution method. Four compounds (6f, 6i, 6p and 6t) displayed 2-fold superiority (minimum inhibitory concentration (MIC) = 3.91 &micro;g/mL) against agricultural pathogenic bacteria R. solanacearum and P. syringae than agrochemical propineb. Moreover, the structure&ndash;activity relationships (SARs) were also carefully summarized in order to guide the development of antibacterial canthin-6-one agents.

In-vitro evaluation of cisplatin nanoparticles encompass natural polymer

2020 ◽  
Vol 3 (1) ◽  
pp. 1-6
Author(s):  
Bhavani J ◽  
Sunil Kumar Prajapati ◽  
Ravichandran S
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Infections ◽  
Pathogenic Bacteria ◽  
Bacterial Species ◽  
Research Work ◽  
Dilution Method ◽  
Bacterial Strains ◽  
Active Components ◽  
Synthetic Drugs

Opportunistic bacterial infections are common in the various parts of human body. In recent years bacterial species have shown resistance against a number of synthetic drugs. This study measured the antibacterial activity of bacterial strains against five common pathogenic bacteria related strains. Cup plate method and two fold serial dilution method were used to evaluated by antibacterial activity by the help of different bacterial related strains. The results revealed that Cisplatin (CIP) using natural as a polymer showed a minimum inhibitory concentration (MIC) at 250 mg/ml to 500 mg/ml of the broth against all bacterial strains. CIP using natural as a polymer was prepared different doses1000 μg/ml and 2000 μg/ ml and measured zone of inhibition dose dementedly reduced when compared to standard. The CIP using natural as a polymer exhibited strong anti-bacterial activity against five different species of bacteria and this may be attributed to various active components. Our research work has been indicated Nanoparticles containing CIP using natural as a polymer formulated for the enhanced anti-cancer activity through antimicrobial mechanism. 

scholarly journals Evaluation of the antibacterial activity on strains responsible for diarrhoea; antioxidant and cytotoxic activities in vitro of the leaves and trunk bark of Vernonia conferta Benth (Asteraceae)

2021 ◽  
Vol 17 (1) ◽  
pp. 041-051
Author(s):  
Ivan Cédric Mvondo Ozela ◽  
Patrick Yamen Mbopi ◽  
Herve Narcisse Bayaga ◽  
Pierre Réne Kwetche Fotsing ◽  
Jean Jacques Tchouani ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Antioxidant Properties ◽  
Raw Material ◽  
Dilution Method ◽  
Cytotoxic Activities ◽  
Phytochemical Screening ◽  
Traditional Medicines ◽  
Ethanolic Extracts ◽  
Emergence Of Resistance

The high incidence of infectious diseases and the emergence of resistance to modern drugs are current public health concerns. This situation leads to the search for alternatives via medicinal plants. The objective of this study was to assess the properties of Vernonia conferta. We performed an experimental study. The plant material consisted of the leaves and trunk bark of V. conferta. The extraction was carried out by maceration using aqueous and hydro-ethanolic solvents, followed by phytochemical screening of the extracts. An evaluation of the antibacterial potential was carried out by the micro-dilution method and was followed by the evaluation of the antioxidant properties (DPPH and FRAP test) and cytotoxicity (resazurin staining) of the extracts. The E2 and E4 extracts exhibited better extraction yields. The phytochemical screening noted the presence of families of compounds in common (polyphenols, tannins and quinones) and those which are different. The hydro-ethanolic extracts exhibited antibacterial activity on the strains of interest with MICs varying from 2 to 32 mg / mL with a possibility of synergistic action between the compounds. The evaluation of the antioxidant properties showed that the extracts E1, E3 and E4 showed better properties with IC50 = 25.1 ± 0.410; 2.456 ± 0.002; 2.363 ± 0.015 µg / mL respectively according to the tested method. The extracts showed their non-cytotoxicity with CC50> 1000 µg / mL. The activities of hydro-ethanolic extracts of V. conferta suggest that the latter would be a potential raw material for the production of improved traditional medicines.

scholarly journals Screening phytochimique des extraits méthanoliques des feuilles de Combretum collinum et des racines de Anogeisus leiocarpus et effet antibactérien in vitro sur des souches de Staphylococcus aureus multirésistantes

2020 ◽  
Vol 14 (6) ◽  
pp. 2362-2372
Author(s):  
Moussa Bamba ◽  
Christel Neut ◽  
Simon Bordage ◽  
Soro Dramane ◽  
Jules Kouadio N’guessan ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Antibacterial Properties ◽  
Diffusion Method ◽  
Dilution Method ◽  
Plantes Médicinales ◽  
Phytochemical Screening ◽  
Methanolic Extracts ◽  
Anogeissus Leiocarpus

Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae) et Combretum collinum Fresen. (Combretaceae) sont deux plantes de la flore ivoirienne couramment utilisées pour traiter plusieurs pathologies telles que les affections cutanées, le paludisme et la fatigue générale. Ce travail s’inscrit dans le cadre de la valorisation de cette flore. Il vise donc à évaluer l’activité antibactérienne des extraits méthanoliques bruts des feuilles de Combretum collinum et des écorces de racines de Anogeissus leiocarpus sur la croissance "in vitro" des souches de Staphylococcus aureus résistantes à la méticilline. La méthode de diffusion en milieu gélosé (solide) a été utilisée pour évaluer la sensibilité des souches bactériennes aux extraits et à déterminer les concentrations minimales inhibitrices (CMI), Quant au screening phytochimique, il a été réalisé par une chromatographie sur couche mince (CCM). La concentration minimale inhibitrice est comprise entre 0,62 mg/ml et 1,25 mg/ml pour Anogeissus leiocarpus et est de 0,325 mg/ml pour Combretum collinum. Le screening phytochimique a révélé la présence de flavonoïdes et de tanins dans l’extrait méthanolique de Anogeissus leiocarpus alors que dans l’extrait méthanolique de Combretum collinum, ce sont des acides phénoliques qui ont été mis en évidence. Il ressort donc que ces deux plantes sont dotées d’un important pouvoir antibactérien et contiennent plusieurs composés chimiques. Elles pourraient donc constituer des voies de prospection pour la recherche de nouvelles molécules antibactériennes en réalisant une étude bio-guidée des extraits bruts et en évaluant leur cytotoxicité sur des cellules hépatiques saines.Mots clés: Antibactérienne, plantes médicinales, flore ivoirienne, extraits methanoliques English Title: Phytochemical screening of methanolic extracts from leaves of Combretum collinum and roots of Anogeisus leiocarpus and in vitro antibacterial effect on multiresistant strains of Staphylococcus aureus Both Anogeissus leiocarpus (DC.) Guill. & Perr. (Combretaceae) and Combretum collinum Fresen. (Combretaceae) are Ivorian national flora plants commonly used in treating skin disorders, malaria, and general fatigue. The current study consists of the valorization of this flora, and aims therefore at revealing antibacterial activity of the methanol crude extracts obtained from stem bark and leaves of the respective plants, against Methicillin-resistant Staphylococcus aureus strains. Agar gel diffusion method was used to assess bacteria susceptibility, and broth dilution method allowed determination of minimum inhibition concentrations (MICs). These parameters varied from 0.62 mg/ml to 1.25 mg/ml for Anogeissus leiocarpus, while they reached 0.325 mg/ml for Combretum collinum. In addition, phytochemical screening brought about flavonoids and tanins for the plant, and phenolic acids for the other one. In conclusion, these named plants contain several chemical compounds with antibacterial properties, and could be of great interest in the search of new molecular compounds provided with antibacterial activity through bio-guided experiments. Furthermore, they could best hold value by testing those methanol extracts over hepatic sane cells for cytotoxicity assessment. Keywords: antibacterial, medicinal plants, Ivorian national flora, methanolic extracts.    

Investigation for New Inhibitors of UDP-N-Acetylglucosamine Enolpyruvyl Transferase (MurA) by Virtual Screening with Antibacterial Assessment

2020 ◽  
Vol 16 ◽  
Author(s):  
Ilham Boulhissa ◽  
Abdelouahab Chikhi ◽  
Abderrahmane Bensegueni ◽  
Mohammad Ahmad Ghattas ◽  
El Hassen Mokrani ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Virtual Screening ◽  
Pathogenic Bacteria ◽  
Disk Diffusion ◽  
Diffusion Method ◽  
Dilution Method ◽  
Chemical Library ◽  
Broth Dilution

Background: View to its interesting role in the peptidoglycan biosynthesis pathway the enzyme UDP-N- acetylglucosamine enolpyruvyl transferase is an attractive target to develop new antibacterial agents, it catalyzes the first key step of this pathway and its inhibition leads to the bacterial cell death. Fosfomycin is known as the natural inhibitor of MurA. Objective: Call new inhibitors of MurA by virtual screening of different chemical compounds libraries, and test the best scored “virtual hits” against three pathogenic bacteria: Escherichia coli, Bacillus subtilis, and Staphylococcus aureus. Methods: A Virtual screening of the structural analogues of fosfomycin downloaded from PubChem database was performed on one side and of the French National Chemical Library as well as using ZINC database to identify new structures different from fosfomycin on the other, FlexX was the software used for this study. The antibacterial testing was divided into methods: disk diffusion and broth dilution. Results: A set of virtual hits was found with better energy score than that of fosfomycin, seven between them were tested in vitro. Therefore, disk diffusion method explored four compounds exhibited antibacterial activity: CID-21680357 (fosfomycin analogue), AB-00005001, ZINC04658565, and ZINC901335. The testing was continued by broth dilution method for both compounds CID-21680357 and ZINC901335 to determine their minimum inhibitory concentrations, and ZINC901335 had the best value with 457µg/ml against Staphylococcus aureus. Conclusion: Four compounds were found and proven in silico and in vitro to have antibacterial activity: CID-21680357, AB-00005001, ZINC04658565, and ZINC901335.

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