scholarly journals Evaluation of Antimicrobial Activity of Acacia etbaica Water Extract Leafs against Some Pathogenic Microorganisms

2021 ◽  
Vol 2 (11) ◽  
pp. 1132-1135
Author(s):  
Abdulmageed B Abdullah ◽  
Abdulbaki Al-zaemey ◽  
Rasheed Hasan Mudhesh Al-Husami ◽  
Mofeed Al-Nowihi
Keyword(s):  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Water Extract ◽  
Antimicrobial Effect ◽  
Inhibition Zone ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
E Coli ◽  
Gram Positive Bacteria ◽  
Inhibition Zones

The antimicrobial activity about water extract of Acacia etbaica was examined by using agar well diffusion methods against five gram-positive and negative bacteria[Staphylococcus aureus (ATCC653-8), Pseudomonas aeruginosa MTCC2453, Bacillus cereus (ATCC6633), Escherichia coli MTCC739, and one local isolate (Staphylococcus epidermides)] in addition to Candida albicans (ATCC2019). this results designated that the water extract of Acacia etbaica possess antimicrobial efficacy against all tested microorganisms either (gram-positive and negative bacteria) or fungi (Candida albicans).Whereas the gram-positive bacteria (S. aureus, S. epidermides and B. cereus) with inhibition zones (21, 19.5 and 16.5) respectively was more sensitive than gram-negative bacteria (P. aeruginosa and E. coli) and C. albicans with inhibition zones 16 and 14.5 respectively. The antimicrobial effect was directly proportional with concentration of water extract where the highest inhibition zone at higher concentration 30% equal 21mm against S.aureus and the lower inhibition zone at lower concentration 5% equal 10mm against C. albicans...

scholarly journals Antimicrobial Activity of Plant Extracts againstBacillus Subtilis,Staphylococcus Aureusand Escherichia Coli

2011 ◽  
Vol 8 (s1) ◽  
pp. S282-S284 ◽  
Author(s):  
Liliwirianis N ◽  
Wan Zuraida Wan Mohd Zain ◽  
Jamaluddin Kassim ◽  
Shaikh Abdul Karim
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Stemona Tuberosa ◽  
Elephantopus Scaber

Local herbs have many potential that may be active with antimicrobial activity. A screening was conducted with 11 species of herbs collected in UiTM Pahang Forest Reserve.Epipremnumsp.,Zingibersp.Tetracera indica, Tectaria crenata, Piper stylosum, Homalomena propinque, Goniothalamus sp., Elephantopus scaber, Mapania patiolale, Melastomasp.,Stemona tuberosa, Phullagathis rotundifolia, Thotea grandifoliaandSmilaxsp. were extracted with methanol to obtain their crude. The agar diffusion method using blank disc of 6 mm diameter were loaded with 1000 µg/mL of methanol crude and applied to the inoculate plate was used to assess the antimicrobial activity against two gram positive bacteria (Bacillus subtilisandStaphylococcus aeureus) and one gram negative bacteria (Escherichia coli). The results evaluated as the diameter of the inhibition zone of microbial growth, showed that all the extracts were active against gram-positive bacteria and gram-negative bacteria. The extract ofStemona tuberosewas found to be the most active against theE. coliandS. aeureuswhilePiper stylosumactive againstB. subtilis.

scholarly journals POTENSI ANTIMIKROBA DARI EKSTRAK DAN FRAKSI SPONS APLYSINA sp. TERHADAP MIKROBA UJI Escherichia coli, Staphylococcus aureus DAN Candida albicans

PHARMACON ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 268
Author(s):  
Marcelinda N. Kotel ◽  
Defny S. Wewengkang ◽  
Herny E. I. Simbala
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Marine Biota ◽  
Gram Negative Bacteria ◽  
Inhibitory Zone ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Inhibition Zones ◽  
Digital Caliper

ABSTRACT          Sponge  Aplysina  sp. is one of  the marine biota , which  has bioactive  compounds  that can be used  as medicinal ingredients. This study aims to determine the antimicrobial  potential of the extracts and fractions  of  sponge Aplysina  sp., against  microbes tested of  Escherichia coli, Staphylococcus aureus, and  Candida albicans. Aplysina  sp., sponge was extracted  using maceration method with  ethanol solvent and fractionated using methanol, n-hexan and chloroform solvents. To test  the antimicrobial  activity carried  out by disk diffusion agar method and observations carried out 24 hours incubation period, with inhibition zones measured using a digital caliper. The results showed that samples of  Aplysina  sp.,  proved to have antimicrobial compounds  to inhibit  Gram –positive bacteria  Staphylococcus aureus, and Gram- negative bacteria  Escherichia coli, with  the highest inhibitory  zone activity, and found  in Gram –positive Staphylococcus aureus bacteria   with measurements of 7,37 mm. Keywords: Sponge Aplysina  sp, Antimicrobial, Extraction,  Fractionation. ABSTRAK           Spons  Aplysina sp  merupakan salah satu  biota laut yang memiliki senyawa bioaktif yang dapat dijadikan  sebagai bahan obat. Penelitian ini bertujuan untuk mengetahui potensi antimikroba dari  Ekstrak dan Fraksi  Spons  Aplysina sp  Terhadap Mikroba Uji  Echerichia coli, Staphylococcus aureus, dan Candida albicans. Spons Aplysina sp diekstraksi  menggunakan metode maserasi dengan pelarut etanol dan difraksinasi  menggunakan  pelarut methanol, n-hexan, dan Kloroform. Untuk pengujian aktivitas antimikroba dilakukan dengan metode  difusi agar  dan  pengamatan dilakukan  1x24  jam  masa inkubasi,  dengan zona hambat diukur menggunakan  digital caliper. Hasil penelitian menunjukkan  bahwa sampel  Spons  Aplysina sp terbukti memiliki senyawa antimikroba untuk menghambat bakteri Gram positif  Staphylococcus aureus  dan  bakteri  Gram  negatif  Echerichia coli, dengan aktivitas zona hambat  tertinggi,  terdapat  pada  bakteri  Gram  positif   Staphylococcus  aureus  dengan hasil pengukuran  7,37 mm. Kata Kunci : Spons  Aplysina sp,  Antimikroba, Ekstraksi, Fraksinasi.

scholarly journals In VitroAntimicrobial Activity and Effect on Biofilm Production of a White Grape Juice (Vitis vinifera) Extract

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Angela Filocamo ◽  
Carlo Bisignano ◽  
Giuseppina Mandalari ◽  
Michele Navarra
Keyword(s):  
Aspergillus Niger ◽  
Grape Juice ◽  
Antimicrobial Effect ◽  
Gram Negative Bacteria ◽  
Respiratory Pathogens ◽  
Gram Positive ◽  
Gram Negative ◽  
E Coli ◽  
Gram Positive Bacteria

Background. The aim of the present study was to evaluate the antimicrobial effect of a white grape juice extract (WGJe) against a range of Gram-positive and Gram-negative bacteria, yeasts, and the fungusAspergillus niger. WGJe was also tested on the production of bacterial biofilmsin vitro.Results. WGJe inhibitedin vitromost Gram-positive bacteria tested,Staphylococcus aureusATCC 6538P being the most sensitive strain (MIC values of 3.9 μg/mL). The effect was bactericidal at the concentration of 500 μg/mL. Amongst the Gram-negative bacteria,Escherichia coliwas the only susceptible strain (MIC and MBC of 2000 μg/mL). No effect on the growth ofCandidasp. and the fungusAspergillus nigerwas detected (MIC values > 2000 μg/mL). WGJe inhibited the biofilms formation ofE. coliandPseudomonas aeruginosawith a dose-dependent effect.Conclusions. WGJe exerted both bacteriostatic and bactericidal activityin vitro. The presented results could be used to develop novel strategies for the treatment of skin infections and against potential respiratory pathogens.

scholarly journals Antimicrobial Activity and GC-MS Profile of Copaiba Oil for Incorporation into Xanthosoma mafaffa Schott Starch-Based Films

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2883
Author(s):  
Giovana de Menezes Rodrigues ◽  
Cristina Tostes Filgueiras ◽  
Vitor Augusto dos Santos Garcia ◽  
Rosemary Aparecida de Carvalho ◽  
José Ignacio Velasco ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Casting Technique ◽  
Gram Positive Bacteria ◽  
Physical Chemical ◽  
Control Film ◽  
Copaiba Oil ◽  
Inhibition Zones

The present study evaluated the effect of the incorporation of copaiba oil, in direct and in microencapsulated form, into films based on Xanthosoma mafaffa Schott starch. Initially, the characterization of copaiba oil by gas chromatograph coupled with mass spectrometry (GC-MS) and its antimicrobial activity against gram-positive and gram-negative bacteria was performed. The films were produced by the casting technique and characterized in relation to physical, chemical, structural, and antimicrobial activity. Sesquiterpenes, mainly β-caryophyllene, were the predominant compounds in copaiba oil, showing antimicrobial activity against B. subtilis and S. aureus. The films showed forming capacity, however, was observed a decrease in solubility and revealed an increase in hydrophobic characteristics. However, the oil reduced the tensile strength and elongation, while the microcapsules did not influence the mechanical properties in comparison to the control film. From microstructure analysis, changes in the films roughness and surface were observed after the addition of oil both directly and in microencapsulated form. Films incorporated with microparticles were able to inhibit the gram-positive bacteria tested, forming inhibition zones, indicating that the encapsulation of copaiba oil was more efficient for protecting bioactive compounds from the oil, suggesting the possible application of mangarito starch-based films incorporated with copaiba oil as biodegradable packaging.

scholarly journals Comparative antimicrobial potential of Tribhuvana-Mishrana and its ingredients against clinical bacteria

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Vashisht Kiran ◽  
Thakur Vivek ◽  
Kumar Deepak ◽  
Sharma Khemchand
Keyword(s):  
Antimicrobial Activity ◽  
Antimicrobial Effect ◽  
Diffusion Method ◽  
Gram Negative Bacteria ◽  
Gram Negative ◽  
E Coli ◽  
Gram Positive Bacteria ◽  
Single Drug ◽  
Microbial Infections ◽  
Agar Well Diffusion Method

There are many single drug and compound formulations prescribed for Jwara (~ fever) in Ayurvedic classics. Tribhuvanakirti Rasa (TKR), Godanti Bhasma (GB) and Sudarshana Ghana Vati (SGV) are widely used compound formulations that are separately indicated for the treatment of Jwara (~fever) in different dosage schedules. In Ayurvedic Formulary of India Tribhuvana-Mishrana (TM) has been chiefly indicated in treatment of Sarva Jwara (~ fever). Therefore, in this study comparative antimicrobial activity of TM and its individual ingredients viz. TKR, GB and SGV were evaluated against four fever-causing microbes such as gram-positive bacteria Staphylococcus aureus and the gram-negative bacteria Salmonella typhii, Escherichia coli and Pseudomonas aeruginosa. The aqueous extract of all the four samples (formulation as whole and the three individual ingredients separately) in a dose 125mcg/ml were tested for their antimicrobial activity against four different microbes by agar well diffusion method. The study shows that TM and its ingredients independently show significant antimicrobial activity. S. aureus was found to be most sensitive to SGV and moderately sensitive to TKR and TM while S. typhii was found to be most sensitive to TM as compared to others. TKR was found to be most effective against E.coli while SGV and TM both showed significant antimicrobial effect against E. coli. TM could provide an alternative to synthetic antibiotics against human microbial infections.

scholarly journals Enaminone-Derived Pyrazoles with Antimicrobial Activity

2019 ◽  
Vol 2019 ◽  
pp. 1-10
Author(s):  
Mashooq Ahmad Bhat ◽  
Mohamed A. Al-Omar ◽  
Ahmed M. Naglah ◽  
Abdul Arif Khan
Keyword(s):  
Antimicrobial Activity ◽  
Gram Negative Bacteria ◽  
Significant Activity ◽  
Disc Diffusion ◽  
Initial Screening ◽  
Gram Positive ◽  
Gram Negative ◽  
Disc Diffusion Assay ◽  
Gram Positive Bacteria ◽  
Diffusion Assay

A series of pyrazoles derived from the substituted enaminones were synthesized and were evaluated for antimicrobial activity. All the compounds were characterized by the spectral data and elemental analysis. The synthesized compounds were initially screened for their antimicrobial activity against ATCC 6538, NCTC 10400, NCTC 10418, and ATCC 27853. During initial screening, compounds (P1, P6, and P11) presented significant antimicrobial activity through disc diffusion assay. These compounds were further evaluated for antimicrobial activity at different time points against Gram-positive and Gram-negative bacteria and presented significant activity for 6 hours. The activity was found to be greater against Gram-positive bacteria. In contrast at 24 hours, the activity was found only against Gram-positive bacteria except compound (P11), showing activity against both types of bacteria. Compound (P11) was found to have highest activity against both Gram-positive and Gram-negative bacteria.

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 Antimicrobial Activity of Gardenia jasminoides Callus and Crude Leaf Extracts for some Organic Solvents against some Pathogenic Bacteria and Yeasts

2014 ◽  
Vol 8 (3) ◽  
pp. 40-45
Author(s):  
Zina Hashem Shehab ◽  
Huda Suhail Abid ◽  
Sumaya Fadhil Hamad ◽  
Sara Haitham
Keyword(s):  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Pathogenic Bacteria ◽  
Saccharomyces Boulardii ◽  
Gram Negative Bacteria ◽  
Proteus Vulgaris ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Gardenia Jasminoides

The study was conducted to evaluate the inhibitory activity of methanol extract of Gardenia jasminoides leaves compared with leaf crude extracts for some organic solvents namely Methanol, Ethanol, Petroleum ether, Asetone and Chloroform on growth of some pathogenic bacteria and yeast, which included four gram positive isolates Staphylococcus aureus, Enterococcus faecalis, Streptococcus pyogenes and Bacillus cereus and gram negative isolates Escherichia coli, Salmonella typhi, Proteus vulgaris and Pseudomonas aeruginosa and some yeasts Candida albicans and Saccharomyces boulardii, by using well diffusion method. The inhibitory activity of extracts in the tested bacterial strains and yeasts was varied according to the type of extracting solvents and are tested microorganisms. The methanol callus extract which grown on Murashige and Skoog (MS) media by using (Naphthalen acitic acid) NAA and (Benzyle adenine) BA as growth regulator highly effective as compared to the other extracts as for inhibition of three gram positive bacteria and three gram negative bacteria,which include Staphylococcus aureus and, Proteus vulgaris, followed by acetone and ethanolic extracts which include two gram positive bacteria and two gram negative bacteria. All extracts had highly effect in growth of Candida albicans while all crude extracts didn’t show any sensitivity against Saccharomyces boulardii, and when we’d done (High Performance Liquid Chromatography) HPLC test for detection of some active compound we found Quinic acid, Iridiods glycosides and Crocin which its rate in fresh callus was higher than fresh leaves.

ANTIMICROBIAL ACTIVITY OF COPPER KAOLINITE AND SURFACTANT MODIFIED COPPER KAOLINITE AGAINST GRAM POSITIVE AND GRAM NEGATIVE BACTERIA

2016 ◽  
Vol 78 (3-2) ◽  
Author(s):  
Nor Syafawani Sarah Md Saad ◽  
Nik Ahmad Nizam Nik Malek ◽  
Chun Shiong Chong
Keyword(s):  
Antimicrobial Activity ◽  
Synergistic Effects ◽  
Wide Spectrum ◽  
Copper Nitrate ◽  
Gram Negative Bacteria ◽  
Gram Positive ◽  
Gram Negative ◽  
X Ray ◽  
Gram Positive Bacteria ◽  
Diffusion Technique

The aim of this research was to determine the antimicrobial activity of kaolinite modified with antimicrobial compounds against Gram positive and Gram negative bacteria. Copper kaolinite (Cu-kaolinite) was prepared by loading raw kaolinite with copper nitrate trihydrate (CuNO3) while surfactant modified Cu-kaolinite (SM-Cu-kaolinite) was prepared by adding cationic surfactants hexadecyltrimethyl ammonium (HDTMA) on Cu-Kaolinite. Samples was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analyzer. The antimicrobial activity of the samples was tested against Gram negative bacteria (Escherichia coli ATCC 11229 and Pseudomonas aeruginosa ATCC 15442), and Gram positive bacteria (Staphylococcus aureus ATCC 6538 and Enterococcus faecalis ATCC 29212) through disc diffusion technique (DDT) and minimum inhibition concentration (MIC). The results showed that the antimicrobial activity of Cu-kaolinite increased after modified with HDTMA due to the synergistic effects of Cu ions and HDTMA molecules on the kaolinite. The antimicrobial activity for surfactant modified Cu-kaolinite was greater for Gram positive bacteria compared to Gram negative bacteria. In conclusion, the attachment of HDTMA on Cu-kaolinite contributed to the enhanced antimicrobial activity against wide spectrum of bacteria (Gram positive and Gram negative bacteria).

Antimicrobial Activity of Gentiana lutea L. Extracts

2009 ◽  
Vol 64 (5-6) ◽  
pp. 339-342 ◽  
Author(s):  
Katarina Šavikin ◽  
Nebojša Menković ◽  
Gordana Zdunić ◽  
Tatjana Stević ◽  
Dragoja Radanović ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Secondary Metabolites ◽  
Antimicrobial Effect ◽  
Gram Negative Bacteria ◽  
Synergistic Activity ◽  
Gram Negative ◽  
Gentiana Lutea ◽  
Methanolic Extracts ◽  
Pure Compounds

Methanolic extracts of flowers and leaves of Gentiana lutea L., together with the isolated compounds mangiferin, isogentisin and gentiopicrin, were used to investigate the antimicrobial activity of the plant. A variety of Gram-positive and Gram-negative bacteria as well as the yeast Candida albicans has been included in this study. Both extracts and isolated compounds showed antimicrobial activity with MIC values ranging from 0.12 - 0.31 mg/ml. Our study indicated that the synergistic activity of the pure compounds may be responsible for the good antimicrobial effect of the extracts. Quantification of the secondary metabolites was performed using HPLC

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