scholarly journals Analysis of Antimicrobial Activities of Photoactivated Cow Urine against Common Human Pathogens

2020 ◽  
Vol 5 (6) ◽  
pp. 1557-1560
Author(s):  
Monica A. Godad ◽  
Siddhi S. Suryavanshi ◽  
Somesh S. Shintre ◽  
Kiran K. Abitkar
Keyword(s):  
Inhibition Zone ◽  
Antimicrobial Activities ◽  
Human Pathogen ◽  
Human Pathogens ◽  
Bacterial Strains ◽  
Zone Of Inhibition ◽  
Average Width ◽  
Gram Negative ◽  
Cow Urine ◽  
Escherichi Coli

A concurrent and promising effects has been achieved by using cow urine as a efficient antibacterial activity against gram-negative and gram-positive human pathogen. The present study aims to evaluate anti-microbial activity photo activated cow urine against pathogenic bacterial strains. It is estimated by agar well diffusion method.It is evident from the data presented that the zone of inhibition of photo activated Gir cow urine and Khillari cow urine against bacteria Escherichi coli and staphulococcus aureus is significant.The present investigation clearly demonstrate that the average width of inhibition zone at 50 micrilitre dose was 1.6cm.Therefore this pathogen can be well managed by using cow urine.

scholarly journals The PHYTOCHEMICALS, ANTIOXIDANT AND ANTIMICROBIAL PROPERTIES OF Senna alata AND Senna tora LEAF EXTRACTS AGAINST BACTERIAL STRAINS CAUSING SKIN INFECTIONS

2019 ◽  
Vol 2 (1) ◽  
pp. 19
Author(s):  
Murni Halim
Keyword(s):  
Leaf Extract ◽  
Antimicrobial Properties ◽  
Inhibition Zone ◽  
Antimicrobial Activities ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Leaf Extracts ◽  
Natural Drugs ◽  
Senna Alata

A study was carried out to screen for phytochemical constituents and assess the antioxidant and antimicrobial activities of Senna alata and Senna tora leaf extracts. The leaves were first dried at room temperature and 50°C in an oven prior to solvent extraction using ethanol and methanol. The in-vitro qualitative assays showed that both S. alata and S. tora leaf extracts contained bioactive and secondary metabolites components such as tannins, steroids, saponin, terpenoids, glycosides, flavonoids and phenols. The antioxidant activity and capacity test were carried out by conducting free radical of 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity and Ferric reduction antioxidant plasma (FRAP) assays. Both assays showed S. tora leaf extract has higher antioxidant capacity than S. alata leaf extract. The efficacy of these leaf extracts were tested against skin pathogens through agar well diffusion method. S. alata extract showed an inhibition zone (1.15 – 1.59 mm) against Pseudomonas aeruginosa while S. tora extracts exhibited a strong antimicrobial activity against S. epidermidis (inhibition zone of 12 – 16.94 mm) followed by P. aeruginosa (inhibition zone of 1 – 1.59 mm). Nonetheless, no inhibition zone was observed for S. aureus by both leaf extracts. The phytochemicals and antioxidant constituents as well as inhibitory potential on skin pathogens possessed by S. alata and S. tora leave highlighted their potential utilization in the development of natural drugs or cosmetics to treat skin related diseases or infections.

Synergistic Effects of Essential Oils of Ammoides verticillata and Satureja candidissima Against Many Pathogenic Microorganisms

2020 ◽  
Vol 18 (1) ◽  
pp. 72-78 ◽  
Author(s):  
Fatima Benyoucef ◽  
Mohammed El Amine Dib ◽  
Boufeldja Tabti ◽  
Arrar Zoheir ◽  
Jean Costa ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Synergistic Effects ◽  
Lactobacillus Rhamnosus ◽  
Salmonella Typhi ◽  
Antimicrobial Activities ◽  
Bacterial Strains ◽  
Gram Negative ◽  
Ammoides Verticillata

Background: Antibiotic resistance is today one of the most serious threats to global health, food security and development. Due to the growing number of infections, treatment becomes more difficult, if not impossible, because of the loss of antibiotic efficacy. Objective: In the present investigation, the chemical composition of essential oils of Ammoides verticillata and Satureja candidissima and their synergistic effects on antimicrobial activities were investigated. Methods: The chemical composition of the essential oil was analyzed by Gas Chromatography (GC) and Gas Chromatography-Mass Spectroscopy (GC/MS). The antimicrobial activity of the essential oils was investigated using dilution-agar method against nine bacterial strains three Gram-negative Escherichia coli (ATCC 25922), Pseudomonas aeruginosa (ATCC 27853) and Salmonella typhi (ATCC 14028), and six Gram-positive: Staphylococcus aureus (ATCC 43300,) Clostridium sporogenes (ATCC 19404), Bacillus subtilis (ATCC 6633), Enterococcus faecalis (ATCC 7314), Lactobacillus rhamnosus (ATCC 53103) and Bacillus cereus (ATCC 14579). Results: The essential oil of A. verticillata was characterized principally by carvacrol (44,3%), Limonene (19,3%) and p-cymene (19,2%). The constituents identified of S. candidissima essential oil were principally oxygenated monoterpenes represented by pulegone (70,4%). The essential oil of A. verticillata had a good antimicrobial activity against four bacterial strains (Escherichia coli, Salmonella typhi, Lactobacillus rhamnosus and Bacillus cereus) with MIC and MBC values between 0.2-0.4 µl/ml and 0.2-6.2 µl/ml, respectively. While, S. candidissima essential oil had moderate antimicrobial activities against all strains with MIC and MBC values between 1.5-6.2 µl/ml and 6.2-12.5 µl/ml, respectively. The results of antimicrobial activity of essential oils blend presented higher antimicrobial activity against all tested bacteria with MIC and MBC values between 0.3-1.5 µl/ml and 0.4-6.2 µl/ml, respectively. Conclusion: The essential oils blend presented high antimicrobial activity compared to virgin oils. This activity can be due to the association of active compounds such as carvacrol and pulegone. These findings provide a new source of drugs that may help in therapy to lead to the development of a new treatment based on a combination of these essential oils against gram-negative and gram-positive bacteria that continue to pose a threat to public health.

scholarly journals Antibacterial Potential of Aloe weloensis (Aloeacea) Leaf Latex against Gram-Positive and Gram-Negative Bacteria Strains

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Yohannes Kelifa Emiru ◽  
Ebrahim Abdela Siraj ◽  
Tekleab Teka Teklehaimanot ◽  
Gedefaw Getnet Amare
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Infections ◽  
Inhibition Zone ◽  
Antibacterial Activities ◽  
Maximum Activity ◽  
New Drugs ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Gram Positive ◽  
Gram Negative

Objective. To evaluate the antibacterial effects of the leaf latex of Aloe weloensis against infectious bacterial strains. Methods. The leaf latex of A. weloensis at different concentrations (400, 500, and 600 mg/ml) was evaluated for antibacterial activities using the disc diffusion method against some Gram-negative species such as Escherichia coli (ATCC 14700) and Pseudomonas aeruginosa (ATCC 35619) and Gram-positive such as Staphylococcus aureus (ATCC 50080) and Enterococcus fecalis (ATCC 4623). Results. The tested concentrations of the latex ranging between 400 and 600 mg·mL−1 showed significant antibacterial activity against bacterial strain. The highest dose (600 mg/ml) of A. weloensis leaf latex revealed the maximum activity (25.93 ± 0.066 inhibition zone) followed by the dose 500 mg/ml against S. aureus. The lowest antibacterial activity was observed by the concentration 400 mg/ml (5.03 ± 0.03) against E. coli. Conclusion. The results of the present investigation suggest that the leaf latex of A. weloensis can be used as potential leads to discover new drugs to control some bacterial infections.

scholarly journals Emergence of plasmid-mediated mcr genes from Gram-negative bacteria at the human-animal interface

Gut Pathogens ◽  
2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Humera Javed ◽  
Sidrah Saleem ◽  
Aizza Zafar ◽  
Aamir Ghafoor ◽  
Ahmad Bin Shahzad ◽  
...  
Keyword(s):  
Bacterial Infections ◽  
Multidrug Resistant ◽  
Detection Methods ◽  
Human Pathogens ◽  
Bacterial Strains ◽  
Gram Negative ◽  
Polymerase Chain ◽  
Animal Isolates ◽  
Animal Strains ◽  
Microbiological Procedures

Abstract Background The global emergence of plasmid-mediated colistin resistance (Col-R) conferred by mcr genes in gram-negative rods (GNRs) has jeopardized the last treatment option for multidrug-resistant bacterial infections in humans. This study aimed to assess the emergence of mcr gene-mediated Col-R in GNRs isolated from humans and animals in Pakistan. Methods Animal and clinical specimens collected from various sources were prospectively analysed using standard microbiological procedures. Pathogens were identified using the API 20E and API 20NE systems (bioMerieux). Minimum inhibitory concentration (MIC) against colistin was determined using the MIC detection methods, and multiplex polymerase chain reaction (PCR) was used to amplify the mcr-1 to mcr-5 genes. Results We isolated 126 (88.1%) animal and 17 (11.9%) human Col-R phenotypes, among which there was a significant association (P < 0.01) of Escherichia coli and Proteus mirabilis with animals and of Acinetobacter baumannii with humans. Animal strains exhibited statistically significant (P < 0.05) resistance to co-trimoxazole, chloramphenicol, and moxifloxacin, and the human pathogens exhibited statistically significant (P < 0.05) antibiotic resistance to cephalosporins, carbapenems, and piperacillin-tazobactam. For Col-R strains, MIC50 values were > 6 µg/mL and > 12 µg/mL for human and animal isolates, respectively. mcr genes were detected in 110 (76.9%) bacterial strains, of which 108 (98.2%) were mcr-1 and 2 (1.8%) were mcr-2. Conclusions The detection of a considerable number of mcr-1 and mcr-2 genes in animals is worrisome, as they are now being detected in clinical pathogens. The acquisition of mcr genes by colistin-susceptible bacteria could leave us in a post-antibiotic era.

scholarly journals A Physical-Chemical Study of the Interference of Ceftriaxone Antibiotic with Copper Chloride Salt

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Elsayed M. AbouElleef ◽  
Mowafak M. Mahrouka ◽  
Sherine E. Salem
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Copper Chloride ◽  
Chemical Study ◽  
Antimicrobial Activities ◽  
Klebsiella Pneumonia ◽  
Chloride Salt ◽  
Gram Negative Bacteria ◽  
Zone Of Inhibition ◽  
Conductivity Method ◽  
Gram Negative

The nano-CuCl2.2H2O salt was prepared by the ball milling method. The association parameters for bulk and nano-CuCl2 salts in H2O are estimated at different temperatures using the conductivity method by applying the Fuoss–Shedlovsky equation and it was higher for nano-CuCl2 than bulk CuCl2 salt. The interaction between the cation (Cu2+) and ligand (ceftriaxone) in H2O was determined also by the conductometric method. Two stoichiometric complexes 1/2 and 1/1 (M/L) are estimated and follow the order Kf (1/1) > Kf (1 : 2) and ∆Gf (1/1) > ∆Gf (1/2) for (M : L) (in negative values) indicate the favorable of formation of (1/1) complex compared to the (1 : 2) complex. The Gibbs free energies change was increased in negative signs with increasing the temperature. The antimicrobial activities of CFT, bulk Cu-CFT complex, and nano-Cu-CFT complex were studied on LB agar by the disc diffusion technique against clinical isolates of gram-negative bacteria (Klebsiella pneumonia and Pseudomonas aeruginosa) and Fungi (Candida albicans). It was observed that (CFT) has a higher zone of inhibition and antibacterial activity than that of bulk and nano-Cu-CFT complexes in Klebsiella pneumonia and Pseudomonas aeruginosa (gram-negative bacteria). The nano-Cu-CFT complex showed a higher clear zone of inhibition and antifungal activity against candida than bulk Cu-CFT complex while the absence of the inhibition zone in CFT, so nano-Cu-CFT complex, can be used as an antifungal drug.

scholarly journals ANTIMICROBIAL ACTIVITIES OF ARTABOTRYS ODORATISSIMUS R.Br.

2021 ◽  
Vol 3 (1) ◽  
pp. 1-5
Author(s):  
Poonam Sethi ◽  
Nandhagopal Karmegam
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Pseudomonas Fluorescens ◽  
Methanolic Extract ◽  
Antimicrobial Activities ◽  
Experimental Plant ◽  
Gram Negative Bacteria ◽  
Zone Of Inhibition ◽  
Gram Negative ◽  
Good Antibacterial Activity

ABSTRACT Artabotrys odoratissimus R.Br.  (Annonaceae) a medium sizes shrub with hooks, sweet smelling flowers and aggregate fruits, was tested for activity against gram negative bacteria. The fruit of the experimental plant was extracted with water, methanol and toluene: methanol (2:1 v/v). Artabotrys fruits showed good antibacterial activity and produced zone of inhibition of 32mm. The methanolic extract of the fruit showed maximum zone of inhibition at 300 ?g/ml against Pseudomonas fluorescens. The present study clearly indicates that A. odoratissimus had a profound antimicrobial   activity and it may be useful in the treatment of various infectious caused by bacteria. Keywords: Artabotrys, Gram Negative Bacteria, Pseudomonas, Zone Of Inhibition

scholarly journals Phytochemical Constituency Profiling and Antimicrobial Activity Screening of Seaweeds Extracts Collected from the Bay of Bengal Sea Coasts

2019 ◽  
Author(s):  
Mahmudul Hasan ◽  
Md. Abdus Shukur Imran ◽  
Farhana Rumzum Bhuiyan ◽  
Sheikh Rashel Ahmed ◽  
Parsha Shanzana ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Biological Activities ◽  
Inhibition Zone ◽  
Antimicrobial Activities ◽  
Total Phenolic ◽  
Enteromorpha Intestinalis ◽  
Bacterial Strains ◽  
Hypnea Musciformis ◽  
Methanol Extracts ◽  
Seaweed Extracts

AbstractSeaweeds are able to produce a great variety of secondary metabolites that are characterized by a broad spectrum of biological activities. Two seaweeds species, namelyHypnea musciformisandEnteromorpha intestinalis werestudied to evaluate the phytochemical constituency and antimicrobial activities. First of all, crude extracts of both sea weeds were prepared by two different extraction methods (soaking and water bath) using different solvents. Phytochemicals profiling results revealed the presence of bioactive compounds (flavonoids, alkaloids, tannin, saponin and phenols) in both seaweed extracts. Quantification results for ethanolic extracts ofH. musciformis and E. intestinalisestimated 51 mg and 43 mg tannins in per gram of dried samples and flavonoids contents were found 67 mg and 57 mg/g mg QE/g respectively. Total phenolic contents were determined in terms of gallic acid equivalent (GAE).H. musciformisexhibited higher amount of phenolics (59 ± 0.0002 mg GAE/g) thanE. intestinalisextracts (41 ± 0.0002 mg GAE/g). In antimicrobial activity test, ethanol extractsof H. musciformisandE. intestinaliswere found 10 mm of inhibition diameter against all of the bacterial strains. Besides, methanol extracts ofE. intestinaliswere more susceptible toStaphylococcus aureus and Pseudomonaswhich was close to the inhibition diameter (>15 mm) of the mainstream antibiotic; Gentamicin. Moreover,Klebsiella sp. was found more susceptible to ethanol and methanol extracts of Hypnea musciformisas it showed inhibition zone greater than 15 mm. Both Seaweed extracts possessed higher amount of phytochemicals and showed promising antimicrobial activities when compared with the standards.

scholarly journals Chemical Composition and Antimicrobial Activities of Essential Oils of Four Lines of Origanum Vulgare Subsp. Hirtum (Link) Ietswaart Grown in Hungary

2007 ◽  
Vol 2 (11) ◽  
pp. 1934578X0700201 ◽  
Author(s):  
Katalin Veres ◽  
Erzsébet Varga ◽  
Zsuzsanna Schelz ◽  
József Molnár ◽  
Jenő Bernáth ◽  
...  
Keyword(s):  
Essential Oils ◽  
Staphylococcus Epidermidis ◽  
Antimicrobial Activities ◽  
Deficient Mutant ◽  
Wild Type ◽  
Bacterial Strains ◽  
Origanum Vulgare ◽  
Gram Negative ◽  
E Coli ◽  
Yeast Strains

The essential oils of four lines of Origanum vulgare L. subsp. hirtum (Link) Ietswaart cultivated in Hungary were analysed by GC and GC-MS methods. These oils were found to contain carvacrol, γ-terpinene and p-cymene as main constituents. The antimicrobial activities of the various oils and their authentic individual components were tested on Gram-positive and Gram-negative bacterial strains, two Saccharomyces cerevisiae strains and two Candida albicans strains. No difference in sensitivity was found between Escherichia coli, Staphylococcus epidermidis and the yeast strains tested, but there were marked differences in sensitivity between the proton pump-deficient mutant of E. coli and its wild type as regards the growth inhibition and MIC values.

scholarly journals Biocidal activity of chicken defensin-9 against microbial pathogens

2016 ◽  
Vol 94 (2) ◽  
pp. 176-187 ◽  
Author(s):  
Haitham A. Yacoub ◽  
Salem M. El-Hamidy ◽  
Maged M. Mahmoud ◽  
Mohamed Nabih Baeshen ◽  
Hussein A. Almehdar ◽  
...  
Keyword(s):  
Candida Albicans ◽  
Pathogenic Bacteria ◽  
Sequence Similarity ◽  
Expression Patterns ◽  
Antimicrobial Activities ◽  
Microbial Pathogens ◽  
Bacterial Cells ◽  
Bacterial Strains ◽  
Gram Positive ◽  
Gram Negative

In this study we identified the expression patterns of β-defensin-9 in chickens from Saudi Arabia, evaluated the antimicrobial activities of synthetic chicken β-defensin-9 (sAvBD-9) against pathogenic bacteria and fungi, and investigated the mode of action of sAvBD-9 on bacterial cells. The AvBD-9 gene of Saudi chickens encodes a polypeptide of 67 amino acids, which is highly similar to the polypeptide in duck, quail, and goose (97%, 86%, and 87%, respectively) and shares a low sequence similarity with the mammalian defensins. AvBD-9 is expressed in various organs and tissues of Saudi chickens and inhibits the growth of both Gram-negative and Gram-positive bacteria, as well as showing activity against unicellular and multicellular fungi (Aspergillus flavus, A. niger, and Candida albicans). sAvBD-9 completely inhibited the growth of both Gram-positive and Gram-negative bacterial strains as well as Candida albicans. The haemolytic effects of sAvBD-9 were limited. Morphological analysis by TEM revealed that sAvBD-9 induces shortening and swelling of Staphylococcus aureus and Shigella sonni cells, opens holes and deep craters in their envelopes, and leads to the release of their cytoplasmic content. Our data shed light on the potential applications of sAvBD-9 in the pharmaceutical industry.

scholarly journals Epilobi Hirsuti Herba Extracts Influence the In Vitro Activity of Common Antibiotics on Standard Bacteria

2016 ◽  
Vol 14 (1) ◽  
pp. 65-75 ◽  
Author(s):  
Lucia Pirvu ◽  
Isabela Nicorescu ◽  
Cristina Hlevca ◽  
Bujor Albu ◽  
Valentin Nicorescu
Keyword(s):  
Synergistic Effects ◽  
Herbal Medicines ◽  
Antimicrobial Properties ◽  
Inhibition Zone ◽  
In Vitro Activity ◽  
Bacterial Strains ◽  
Gram Negative ◽  
E Coli ◽  
Effective Source

AbstractEpilobium genus has been confirmed as an effective source of natural antimicrobials. However, the influence of Epilobi hirsuti herba derived products on usual antibiotics activity has not been studied. In this study, several standardized Epilobi hirsuti herba extracts (EHE) were evaluated in order to asses their potential effects on usual antibiotics tested on standard Gram-positive and Gram-negative bacterial strains in vitro. The results emphasized that the bacterial strains ranged from sensitive (MIC values between 50–200 μg GAE mL-1) (S. epidermidis ATCC 12228) to very resistant (E. coli strains), E. faecalis ATCC 29212 being practically immune to EHE. In terms of synergistic interaction, Tetracycline and Ampicillin combinations lead to the most important stimulatory effects, the diameters of the inhibition zone being even 60% bigger compared to the antibiotic alone. Synergistic effects between myricetin(galloyl) derivates and Tetracycline were also revealed on P. aeruginosa and E. coli strains. Together, it clearly demonstrated not only EHE’s own antimicrobial properties, but also their capacity to influence the antimicrobial potency of some common antibiotics. These results could be useful for the area of herbal medicines and as potential candidates in managing microbial resistance, but also for physicians and pharmacists using combined antibacterial therapy.

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