scholarly journals COMPARATIVE STUDY ON ACTIVITIES OF ANTI BACILLARY DYSENTRY SHIGELLA DYSENTERIAE OF SYZYGIUM POLYANTHUM AND DRACAENA ANGUSTIFOLIA LEAVES ETHANOL EXTRACTS

2017 ◽  
Vol 10 (2) ◽  
pp. 348 ◽  
Author(s):  
Resmi Mustarichie ◽  
Sri Agung Fitri ◽  
Danni Ramdhani
Keyword(s):  
Antibacterial Activity ◽  
Atomic Absorption ◽  
Ethanol Extract ◽  
Atomic Absorption Spectrophotometry ◽  
Shigella Dysenteriae ◽  
Diffusion Method ◽  
Microdilution Method ◽  
Mueller Hinton ◽  
Mueller Hinton Agar ◽  
Ethanol Extracts

Objective: This study aims to determine the antibacterial activity of ethanol extract of bay (Syzygium polyanthum W.) and suji (Dracaena angustifoliaRoxb.) leaves against Shigella dysenteriae and the amount of potassium to the discovery of anti-dysentery drug candidates.Methods: Testing activities and comparative value activities performed by the agar diffusion method, whereas the determination of minimum bactericidal concentration (MBC) was done with the subculture media incubation test followed with microdilution method on Mueller Hinton Agar medium sterile. Potassium levels of the extract were carried out quantitatively using atomic absorption spectrophotometry.Results: The test results showed that the ethanol extract of both leaves had antibacterial activity against S. dysenteriae with MBC values were in the range of 10-20% w/v. Value comparative effectiveness suji leaf ethanol extract to the bay leaf was 1:0.4. Potassium levels ethanol extract of bay and suji leaves were 1.027% and 3.795%, respectively.Conclusion: It can be concluded that the ethanol extract of bay and suji leaves has antibacterial activity against bacteria S. dysenteriae ATCC 13313. Rated comparative activity of the ethanol extract of the suji leaves with bay leaves ethanol extract was 1:0.4 which means to generating resistor diameter equal to 1 part suji leaf ethanol extract equivalent to 0.4 parts of the ethanol extract of bay leaves. The minimum kill concentration ethanol extract of bay and suji leaves ethanol extract was in the range of 10-20% w/v. Both bay and suji leaves have potential as a supplier of potassium in patients with hypokalemia dysentery.Keywords: Bay leaves, Suji leaves, Shigella dysenteriae, Potassium, Atomic absorption spectrophotometry. 

scholarly journals STUDY ON THE ANTIBACTERIAL ACTIVITY OF FRUIT EXTRACTS OF KLUTUK BANANA (MUSA BALBISIANA COLLA) AGAINST SHIGELLA DYSENTERIAE ATCC 13313

2017 ◽  
Vol 10 (7) ◽  
pp. 220 ◽  
Author(s):  
Sriagung Fitri Kusuma ◽  
Soraya R Mita ◽  
Indah Firdayani ◽  
Resmi Mustarichie
Keyword(s):  
Antibacterial Activity ◽  
Thin Layer ◽  
Ethanol Extract ◽  
Shigella Dysenteriae ◽  
Thin Layer Plate ◽  
Phytochemical Analysis ◽  
Banana Fruit ◽  
Musa Balbisiana ◽  
Fruit Extracts ◽  
Microdilution Method

Objective: The purpose of this study is to determine the antibacterial activity of Klutuk Banana (Musa balbisiana colla) fruit extracts against Shigella dysenteriae ATCC 13313 and the amount of potassium to the discovery of anti-dysentery drug candidates.Methods: The simplisia of Klutuk banana fruit was extracted with ethanol using a maceration method. The phytochemical screening of ethanol extract was performed using standard procedures. Determination thin layer chromatography (TLC) profile of the extract was performed using a thin layer plate. The antibacterial activity was investigated using agar well diffusion technique. The minimum inhibitory concentrations (MIC) were determined by a serial microdilution method, whereas the minimum bactericidal concentration (MBC) was done by subculturing the MIC result onto agar medium. Potassium levels of the extract were carried out quantitatively using atomic absorption spectrophotometry.Results: The phytochemical analysis revealed the presence of flavonoids, polyphenols, tannins, monoterpenoid and sesquiterpenoids, quinones, and saponins. The TLC results prove the existence of flavonoids in the tested extract. The content of secondary metabolites that can act as an antibacterial, strengthen the antibacterial activity of ethanol extract of Klutuk banana against S. dysenteriae 13313 with MBC values in the range of 5-10%w/v. Potassium levels in the ethanol extract of Klutuk banana fruits contain potassium as much as 2.919% (29 190 ppm).Conclusion: It can be concluded that the ethanol extract of Klutuk banana fruits is more potent as antibacterial against S. dysenteriae than as potassium supplier in hypokalemia therapy.

scholarly journals Microwave-Assisted Synthesis, Structural Characterization and Assessment of the Antibacterial Activity of Some New Aminopyridine, Pyrrolidine, Piperidine and Morpholine Acetamides

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 533
Author(s):  
Abdulmajeed S. H. Alsamarrai ◽  
Saba S. Abdulghani
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Species ◽  
Antibacterial Properties ◽  
Molecular Structures ◽  
Secondary Amines ◽  
Diffusion Method ◽  
Microwave Assisted Synthesis ◽  
Mueller Hinton ◽  
Mueller Hinton Agar

A series of new acetamide derivatives 22–28 of primary and secondary amines and para-toluene sulphinate sodium salt have been synthesized under microwave irradiation and assessed in vitro for their antibacterial activity against one Gram-positive and two Gram-negative bacterial species such as S. pyogenes, E. coli, and P. mirabilis using the Mueller-Hinton Agar diffusion (well diffusion) method. The synthesized compounds with significant differences in inhibition diameters and MICs were compared with those of amoxicillin, ampicillin, cephalothin, azithromycin and doxycycline. All of the evaluated acetamide derivatives were used with varying inhibition concentrations of 6.25, 12.5, 37.5, 62.5, 87.5, 112.5 and 125 µg/mL. The results show that the most important antibacterial properties were displayed by the synthetic compounds 22 and 24, both of bear a para-chlorophenyl moiety incorporated into the 2-position moiety of acetamide 1. The molecular structures of the new compounds were determined using the FT-IR and 1H-NMR techniques.

scholarly journals Microwave-assisted Synthesis, Structural Characterization of Amino Pyridines, Pyrrolidine, Piperidine, Morpholine, Acetamides, and Assessment of Their Antibacterial Activity

2020 ◽  
Author(s):  
Abdulmajeed Alsamarrai ◽  
Saba Abdulghani
Keyword(s):  
Antibacterial Activity ◽  
Bacterial Species ◽  
Antibacterial Properties ◽  
Molecular Structures ◽  
Diffusion Method ◽  
Microwave Assisted Synthesis ◽  
Mueller Hinton ◽  
Mueller Hinton Agar ◽  
New Compounds

A sequence of new acetamide derivatives 9-15 of primary, secondary amine, and para-toluene sulphinate sodium salt have been synthesized under microwave irradiation and assessed in vitro for their antibacterial activity against one Gram-positive and two Gram-negative bacterial species such as S. pyogenes, E. coli, and P.mirabilis using the Mueller-Hinton Agar diffusion (well diffusion) method. The synthesized compounds with significant differences in inhibition diameters and MICs were compared with those of amoxicillin, ampicillin, cephalothin, azithromycin and doxycycline. All of the evaluated acetamide derivatives were used with varying inhibition concentrations of 6.25, 12.5, 37.5, 62.5, 87.5, 112.5 and 125 µg/ml. The results show that the most important antibacterial properties exercised by the synthetic compounds 9 and 11 bearing para-chlorophenyl moiety incorporated into the 2-position moiety of acetamide 2. The molecular structures of the new compounds were determined using FT-IR, 1H-NMR techniques.

scholarly journals UJI AKTIVITAS ANTIBAKTERI EKSTRAK n-HEKSAN, ETIL ASETAT DAN ETANOL KULIT BATANG KAYU EBONI (Diospyros celebica Bakh.) MENGGUNAKAN METODE DIFUSI

KOVALEN ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 233-239
Author(s):  
Ni Luh Sumitriasih ◽  
Ahmad Ridhay ◽  
Indriani
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Ethanol Extract ◽  
Tree Bark ◽  
Diffusion Method ◽  
Well Test ◽  
Activity Test ◽  
Ethanol Extracts

A study was conducted on the antibacterial activity test on n-hexane, ethyl acetate, and ethanol extracts of ebony bark (Diospyros celebica Bakh.) using a diffusion method. The purpose of this research is to know the antibacterial activity of ebony bark against Staphylococcus aureus and Escherichia coli bacteria using n-hexane, ethyl acetate dan ethanol. The method of extraction used in this research was maceration method with three polarity levels of solvent. The antibacterial activity test was performed by diffusion-well test. The results showed that ethyl acetate extract gave the highest inhibition of 26.14 mm in gram-positive bacteria (Staphylococcus aureus) and ethanol extract of 25.97 mm in gram-negative bacteria (Escherichia coli). Keywords: Ebony (Diospyros celebica. Bakh), Tree Bark, Inhibitory, Antibacterial

scholarly journals Antibacterial activity test of Simargaolgaol (Aglaonema modestum Schott ex Engl) leaves extract against Escherichia coli and Salmonella typhi bacteria

2021 ◽  
Vol 13 (2) ◽  
pp. 151-158
Author(s):  
Tiurma Solomasi Zega ◽  
◽  
Putri Mandaoni Pakpahan ◽  
Rahmayani Siregar ◽  
Givinda Sitompul ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibacterial Activity ◽  
Ethyl Acetate ◽  
Leaf Extract ◽  
Ethanol Extract ◽  
Salmonella Typhi ◽  
Diffusion Method ◽  
Activity Test ◽  
Inhibitory Power ◽  
Ethanol Extracts

The Simargaolgaol (Aglaonema modestum Schott ex Engl) plant is a plant that grows wild in Barus District, Central Tapanuli, North Sumatra which is used by the community as a medicinal plant. This study aims to determine the antibacterial activity of n-hexane, ethyl acetate and ethanol extracts from Simargaolgaol leaves against Escherichia coli and Salmonella typhi bacteria. The antibacterial activity test of Simargaolgaol leaves was carried out using the disc diffusion method. The results of antibacterial activity showed that the highest inhibitory power of Simargaolgaol leaf extract was ethanol extract (polar), ethyl acetate extract (semi polar) and n-hexane extract (non polar). The inhibitory power of ethanol extract, ethyl acetate, and n-hexane against Escherichia coli bacteria was 13.1 mm (strong); 9.7 mm (medium); 8.0 mm (medium) and for Salmonella typhi bacteria respectively 11.2 mm (strong); 10.7 mm (strong) and 9.3 mm (medium). With the concentration of the extract in the diameter is 10%. Based on this, it can be concluded that Simargaolgaol leaf extract has potential as an antibacterial. Keywords: Aglaonema modestum Schott ex Engl, Antibacterial activity, Escherichia coli, Salmonella typhi

scholarly journals PENENTUAN AKTIVITAS EKSTRAK ETANOL CABAI MERAH DALAM MENGHAMBAT PERTUMBUHAN BAKTERI

2021 ◽  
Vol 26 (1) ◽  
pp. 64-73
Author(s):  
Alfi Sapitri ◽  
Eva Diansari Marbun ◽  
Ulfayani Mayasari
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Ethanol Extract ◽  
Clear Zone ◽  
Capsicum Annum ◽  
Activity Test ◽  
Mueller Hinton ◽  
Mueller Hinton Agar ◽  
Escherichia Coli Bacteria

Penelitian ini bertujuan untuk melakukan uji fitokimia terhadap ekstrak etanol Cabai merah (Capsicum annum L.) dan uji aktivitasnya terhadap pertumbuhan bakteri Staphylococcus aureus dan Escherichia coli. Pengujian aktivitas antibakteri ini menggunakan metode difusi agar dengan menggunakan kertas cakram dengan tiga kali pengulangan. Ekstrak etanol cabai merah dibuat dengan konsentrasi 45, 60, 75, dan 90%. Uji aktivitas antibakteri dilakukan dengan metode Kirby Bauer. Media yang digunakan sebagai uji antibakteri pada penelitian ini yaitu Mueller-Hinton Agar (MHA). Hasil skrining fitokimia terhadap ekstrak etanol cabai merah menunjukkan adanya senyawa metabolit sekunder. Senyawa metabolit sekunder tersebut yaitu alkaloid, flavonoid, tanin, saponin, dan Steroid/triterpenoid. Steroid berfungsi sebagai antimikroba. Hasil penelitian ini juga mengungkapkan adanya kandungan senyawa capsaicin yang terkenal sebagai senyawa aktif antimikroba. Ekstrak etanol cabai merah memiliki aktivitas antibakteri terhadap bakteri Staphylococcus aureus dan Escherichia coli zona bening terendah pada konsentrasi 45% dan zona bening tertinggi pada konsentrasi 90%. Dapat disimpulkan bahwa ekstrak cabai merah memiliki aktivitas antibakteri terhadap penghambatan pertumbuhan bakteri.THE ABILITY OF RED CHILI ETHANOL EXTRACT IN INHIBITHING THE GROWTH OF BACTERIAThis study aimed to perform a phytochemical test on the ethanolic extract of red chili (Capsicum annum L.) and test its activity against the growth of Staphylococcus aureus and Escherichia coli bacteria. This antibacterial activity test used the agar diffusion method using disc paper with three repetitions. Red chili ethanol extract was made with concentrations of 45%, 60%, 75% and 90%. The antibacterial activity test was carried out using the Kirby Bauer method. The medium used as an antibacterial test in this study was Mueller-Hinton Agar (MHA). The results of phytochemical screening of red chili ethanol extract showed the presence of secondary metabolites. The secondary metabolites are alkaloids, flavonoids, tannins, saponins, and steroids/triterpenoids. Steroids serve as  antimicrobials. The results of this study also revealed the presence of capsaicin compounds which are known as active antimicrobial compounds. Red chili ethanol extract had antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria in the lowest clear zone at a concentration of 45% and the highest clear zone at a concentration of 90%. It can be concluded that red chili extract has antibacterial activity against bacterial growth inhibition.

EFFECT OF PLANT EXTRACTS ON BACTERIAL GROWTH AND POTENTIAL MECHANISM OF ACTION

2021 ◽  
Author(s):  
Marina M. Stanković ◽  
◽  
Jelena Z. Pribojac ◽  
Jelena N. Terzić ◽  
Olgica D. Stefanović
Keyword(s):  
Antibacterial Activity ◽  
Cell Membrane ◽  
Mechanism Of Action ◽  
Ethanol Extract ◽  
Mentha Piperita ◽  
Bacterial Strains ◽  
Subtilis Atcc ◽  
Microdilution Method ◽  
Bacterial Cell Membrane ◽  
Ethanol Extracts

Mentha piperita and Melissa officinalis are both well-known medicinal plants that have applications in traditional medicine. In this research the antibacterial activity of the ethanol extracts of M. piperita and M. officinalis was examined against 14 bacterial strains via the microdilution method. Minimum inhibitory concentrations of ethanol extracts of both plant species ranged from 0.312 to 20 mg/mL. Standard strains of Staphylococcus aureus ATCC 25923 at a concentration of 0.312 mg/mL and Bacillus subtilis ATCC 6633 at a concentration of 1.25 mg/mL showed the highest sensitivity to the ethanol extract of M. piperita. Ethanol extract of M. officinalis showed antibacterial activity on standard strains of S. aureus ATCC 25923 and B. subtilis ATCC 6633 at a concentration of 0.625 mg/mL. In addition to the mentioned standard strains, it showed activity on the isolate from the food Proteus spp. at a concentration of 0.312 mg/mL and isolate from the wound Proteus mirabilis at a concentration of 0.625 mg/mL. Mechanism of action of the ethanol extract of M. officinalis was examined on the permeability of the bacterial cell membrane. The effect of the extract on the increased permeability of the cell membrane was measured based on the release of proteins and the percentage of crystal violet binding. Ethanol extract of M. officinalis has been shown to act at the level of the cell membrane in the following bacterial strains of Pseudomonas aeruginosa, S. aureus and Enterococcus spp.

scholarly journals Antibacterial Activity of Rhamnus prinoides extracts against Staphylococcus aureus and Escherichia coli

2019 ◽  
Author(s):  
KINDU GETA
Keyword(s):  
Antibacterial Activity ◽  
Infectious Diseases ◽  
Pathogenic Bacteria ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Domestic Animal ◽  
Diffusion Method ◽  
Active Components ◽  
Microbial Infections ◽  
Ethanol Extracts

Abstract Background: Infectious diseases caused by bacteria have a large impact on public health. Increasing in resistant microbial infections intensified the search for new, safer, and more efficacious agents to combat serious microbial infections. Plants have played a central part in combating many diseases in human and domestic animal in many local communities, including Africa. Rhamnus prinoides is Ethiopian medicinal plants that have been used traditionally for the treatment of diverse infectious diseases. Therefore, this research was carried out to evaluate antibacterial activity Rhamnus prinoides extracts against pathogenic bacteria. Methods: The antimicrobial activity tests were carried out by the agar well diffusion method. Broth dilution and streak plate methods were used to determine MIC and MBC of extracts respectively. Results: The results revealed that ethanol extracts of fruits showed the highest antibacterial activity against standard strains of S.aureus with mean inhibition zone of 26±0.58, 28.33±1.2 and 33.33±0.9mm at 25, 50 and 100mg/ml respectively. The lowest mean MIC value (1.04±0.26 mg/ml) was recorded with ethanol extract of fruits against standard strains of S. aureus and the lowest mean MBC value (2.08±0.52 mg/ml) was recorded with ethanol extract of fruits against standard strains and clinical isolates of S. aureu. Conclusion: On the basis of the current findings, Rhamnus prinoides could be a good candidate in the search for new antibacterial agents from natural products against bacterial pathogens. Therefore, further studies are needed to study their toxicology and isolate the bio- active components from this plant.

scholarly journals Antibacterial Activity of Rhamnus prinoides extracts against Staphylococcus aureus and Escherichia coli

2019 ◽  
Author(s):  
kindu geta ◽  
Mulugeta Kibret
Keyword(s):  
Antibacterial Activity ◽  
Medicinal Plants ◽  
Pathogenic Bacteria ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Diffusion Method ◽  
Active Components ◽  
Microbial Infections ◽  
Ethanol Extracts ◽  
Broth Dilution

Abstract Medicinal plants offer a major and accessible source of health care to people living in developing countries. Increasing in resistant microbial infections intensified the search for new, safer, and more efficacious agents to combat serious microbial infections. Acanthus sennii is one of the medicinal plants used traditionally for treatment of different infectious diseases in Ethiopian. Therefore, this research was carried out to evaluate antibacterial activity of Acanthus sennii against pathogenic bacteria. The antimicrobial activity tests of the plant extracts against pathogenic bacteria were carried out by the agar well diffusion method. Broth dilution and streak plate method were used to determine MIC and MBC of extracts respectively. The results revealed that ethanol extracts of leaves showed the highest antibacterial activity against standard strains of S.aureus with inhibition zone of 14±0.58mm and 17±0.67mm at 50mg/ml and at 25mg/ml respectively. Ethanol extracts of buds showed the highest antibacterial activity against standard strains of S.aureus with inhibition zone of 25.67±0.67mm at 100mg/ml. The lowest mean MIC value (2.6±0.52 mg/ml) was recorded with ethanol extract of leaves against standard strains and clinical isolates of S. aureus. The lowest mean MBC value (4.2±1.04 mg/ml) was recorded with ethanol extract of leaves against standard strains of S. aureu. Acanthus sennii could be a good candidate in the search for new antibacterial agents from natural products against bacterial pathogens. Therefore, further studies are needed to study their toxicology and isolate the bio- active components from this plant. Key words: Acanthus sennii, Antibacterial activity, MIC, MBC, pathogenic bacteria

Antibacterial Activity of Ethanol Extract from Stem Bark and Leaves of ­Berenuk (Crescentia cujete L.)

2017 ◽  
Vol 4 (1) ◽  
pp. 1-14
Author(s):  
Uswatun Hasanah ◽  
Desi Rosdiana ◽  
Syaefudin Syaefudin
Keyword(s):  
Antibacterial Activity ◽  
Ethanol Extract ◽  
Stem Bark ◽  
Diffusion Method ◽  
Contact Method ◽  
E Coli ◽  
Antibacterial Assay ◽  
Phytochemical Compounds ◽  
Crescentia Cujete ◽  
Ethanol Extracts

Crescentia cujete L. (C. cujete) has been known as a medicine for various diseases that caused by microorganisms. This research was aimed to identify the phytochemical compounds and to determine the antibacterial activity of ethanolic extracts from stem bark and leaves of C. cujete. The phytochemical compounds in both extracts were identified by Harborne method, while antibacterial activity assay was performed by disc diffusion method with the concentration of bacteria 106 cfu/mL. Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) were used in antibacterial assay. Minimum Inhibitory Concentration (MIC) was obtained by using contact method. The phytochemical compounds analysis showed that ethanol extracts of C. cujete stem bark and leaves contained alkaloids, flavonoids, saponins, tannins, and steroids. The results of antibacterial activity test showed that both extracts have antibacterial activity with the highest inhibition showed by extracts with concentration of 100 %(w/v). The decreased percentage in the number of bacterial colonies on the extracts was less than 90 % so that the MIC value of both extracts against S. aureus could not be determined.

Sign in / Sign up

Export Citation Format

Share Document