Growth characteristic of probiotic in fermented coconut milk and the antibacterial properties against Streptococcus pyogenes

2021 ◽  
Author(s):  
Ching Enn Han ◽  
Joo-Ann Ewe ◽  
Chee-Sian Kuan ◽  
Siok Koon Yeo
Keyword(s):  
Streptococcus Pyogenes ◽  
Growth Characteristic ◽  
Antibacterial Properties ◽  
Coconut Milk

scholarly journals Chemical composition and antibacterial activities of essential oils from fruits of Melicope pteleifolia (Champ. Ex Benth.) T.G. Hartley grown in Lam Dong Province, Vietnam

2020 ◽  
Vol 42 (3) ◽  
Author(s):  
Hoang Thi Binh ◽  
Tran Thi Bao Tram ◽  
Do Ngoc Dai ◽  
Vuong Thuy Tien ◽  
Le Minh Tam ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Chemical Composition ◽  
Essential Oil ◽  
Streptococcus Pyogenes ◽  
Antibacterial Properties ◽  
Antibacterial Activities ◽  
Gas Chromatography Mass Spectrometry ◽  
Diffusion Method ◽  
Aerial Parts ◽  
Agar Well Diffusion Method

In the present study, chemical composition and antibacterial properties of essential oil obtained from the aerial parts of the Melicope pteleifolia (Champ. ex Benth.) T.G Hartley in Dalat were evaluated. Essential oil was isolated through hydro-distillation. Twenty-nine constituents comprising 100% of the essential oil were characterized by gas chromatography/mass spectrometry (GC-MS) techniques. The major compounds in the essential oil were (+)-Sabinene (34.73%), Cis-α-bergamotene (13.15%), Z-α-trans-bergamotol (5.28%), β-mycrene (4.98%), and 1,3,6-octatriene, 3,7-dimethyl-(4.71%). Antibacterial activities of Melicope pteleifolia essential oil were investigated against Gram-positive and-negative bacteria. Results showed significant activities against Streptococcus pyogenes and Escherichia coli using an agar well diffusion method. The application of this essential oil in preventing and eliminating bacteria could be useful in fields as medicine and cosmetics. 

scholarly journals In VitroAntibacterial Spectrum ofSodium Seleniteagainst Selected Human Pathogenic Bacterial Strains

Scientifica ◽  
2016 ◽  
Vol 2016 ◽  
pp. 1-4 ◽  
Author(s):  
Mohammad Firoz Alam ◽  
Mohammed M. Safhi ◽  
Sivakumar Sivagurunathan Moni ◽  
Aamena Jabeen
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Bacillus Subtilis ◽  
Streptococcus Pyogenes ◽  
Sodium Selenite ◽  
Antibacterial Properties ◽  
Human Pathogens ◽  
Bacterial Strains ◽  
Zone Of Inhibition ◽  
Klebsiella Planticola

The objective of this investigation was to predict the antibacterial properties ofsodium seleniteagainst selected human pathogens. A group of six human bacterial pathogens includingStaphylococcus aureus,Streptococcus pyogenes,Bacillus subtilis,Escherichia coli,Pseudomonas aeruginosa, andKlebsiella planticolawere utilized for screening. The spectrum of activity was qualified based on zone of inhibition. Our study demonstrated thatsodium seleniteexhibits a strong spectrum of activity againstBacillus subtilis,Staphylococcus aureus,Escherichia coli, andKlebsiella planticola.The spectrum of activity was compared with standard ciprofloxacin disc (5 μg/disc) and observed to have satisfactory effect.

scholarly journals Antibacterial properties of selected Malaysian Tualang honey against Pseudomonas aeruginosa and Streptococcus pyogenes

2020 ◽  
Author(s):  
Mohammad Abdulraheem Al-Kafaween ◽  
Hamid Ali Al-Jamal ◽  
Abu Bakar Mohd Hilmi ◽  
Nour Amin Elsahoryi ◽  
Norzawani Jaffar ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Streptococcus Pyogenes ◽  
Structural Integrity ◽  
Antibacterial Properties ◽  
Microbial Infection ◽  
Potential Health ◽  
Log Reduction ◽  
Kill Curve ◽  
Time Kill ◽  
Tualang Honey

Background and Objectives: Tualang honey (TH) is a Malaysian multifloral jungle honey. In recent years, there has been a marked increase in the number of studies published in medical databases regarding its potential health benefits. The study aimed to investigate the effect of TH against Pseudomonas aeruginosa and Streptococcus pyogenes. Materials and Methods: The effect of TH on both bacteria was investigated using MIC, MBC, growth curve, time-kill curve, scanning electron microscopy (SEM) and RT-qPCR. Results: The MIC of TH against P. aeruginosa and S. pyogenes was 18.5% (w/v) and 13% (w/v) respectively and MBC 90 was 25% (w/v) for both bacteria. Spectrophotometric readings of at least 90% inhibition yielded MIC values of TH, 18.5% (w/v) and 15% (w/v) for P. aeruginosa and S. pyogenes respectively. A time–kill curve demonstrated a bactericidal with a 4-log reduction estimated within 8 hours. Using SEM, loss of structural integrity and marked changes in cell shape were observed. RT-qPCR analysis showed that TH reduced the pattern of gene expression in both bacteria, with a trend toward reduced expression of the virulence genes of interest. Conclusion: This study suggests that TH could potentially be used as an alternative therapeutic agent for microbial infection particularly against these two organisms.

The Assessment of Chitosan Solutions Effects on Bacterial Strains

2018 ◽  
Vol 69 (6) ◽  
pp. 1485-1488
Author(s):  
Marioara Nicoleta Filimon ◽  
Roxana Popescu ◽  
Adrian Sinitean ◽  
Paula Maniu ◽  
Gabi Dumitrescu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Streptococcus Pyogenes ◽  
Legionella Pneumophila ◽  
Antibacterial Effect ◽  
Antibacterial Properties ◽  
Bacterial Strains ◽  
Antibacterial Effects ◽  
E Coli ◽  
Bacterial Cell Viability ◽  
And Staphylococcus Aureus

The interest in the antimicrobial actions of chitosan is due to its multiple properties and effects. The aim of the study was to assess the potential antibacterial effects of chitosan applied on 7 bacterial strains: Escherichia coli, Streptococcus pyogenes, Pseudomonas aeruginosa, Enterococcus faecalis, Clostridium perfringens, Legionella pneumophila and Staphylococcus aureus. Six different concentrations of chitosan were dissolved in 1% acetic acid, following two working protocols (Kirby-Bauer method and testing for bacterial cell viability). The sensitivity of tested bacterial strains following the effect of exposure to chitosan decreased as follows: E. coli] L. pneumophila] S. aureus] S. pyogenes] C. perfringens] P. aeruginosa] E. faecalis. The inhibition rates for the bacterial strains E. faecalis, S. pyogenes and S. aureus highlighted again the strong antibacterial properties of this product. Conclude that the chitosan presents a different antibacterial effect against several bacterial strains of interest directly with the employed concentrations.

scholarly journals INHIBITORY ACTIVITY OF ALLIUM SATIVUM L. EXTRACT AGAINST STREPTOCOCCUS PYOGENES AND PSEUDOMONAS AERUGINOSA

2019 ◽  
Vol 3 (2) ◽  
pp. 72
Author(s):  
Natasha Hana Savitri ◽  
Danti Nur Indiastuti ◽  
Manik Retno Wahyunitasari
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Streptococcus Pyogenes ◽  
Bacterial Infections ◽  
Allium Sativum ◽  
Antibacterial Effect ◽  
Antibacterial Properties ◽  
Antibiotic Activity ◽  
Garlic Extract ◽  
Dilution Method ◽  
Before And After

Background: One of the most common health problems is infectious diseases. Infectious disease can be caused by bacteria. There were two groups of bacteria based on the staining, Gram-positive and Gram-negative bacteria. Purpose: Antibiotics are the main therapy used in the incidence of bacterial infections. But over time, some antibiotics became resistance. Several studies have shown that garlic has an antibacterial effect. The content of allicin, ajoene, saponins, and flavonoids is found in garlic which has antibacterial properties. The antibiotic activity test of garlic was carried out on the bacteria Streptococcus pyogenes and Pseudomonas aeruginosa. The goal of this study is to investigate the antibacterial effect of Allium sativum L. extract against Streptococcus pyogenes and Pseudomonas aeruginosa. Methods: Garlic extract was made using the maceration method using 96% alcohol as the solvent. Tube dilution method elected to observe garlic antibiotic activity. This test aims to determine the minimum inhibitory concentration (MIC) and the minimum bactericidal concentration (MBC). There were eight different concentration used, i.e. 2 grams/ml, 1 gram/ml, 0.5 gram/ml, 0.25 gram/ml, 0.125 gram/ml, 0.0625 gram/ml, 0.03125 gram/ml, and 0.015625 gram/ml. Replication is done three times. Results: In this experiment, the extract produced was turbid that MIC could not be determined and there was no momentous differentiation between before and after treatment. There was no growth of Streptococcus pyogenes in 1 gram/ml and Pseudomonas aeruginosa in 0.5 gram/ml. This number indicates the MBC for each bacteria. Conclusion: Garlic (Allium sativum L.) has an effect of bactericidal activity, it can perform as an antibacterial for Streptococcus pyogenes and Pseudomonas aeruginosa. Garlic extract was more effective for Pseudomonas aeruginosa than Streptococcus pyogenes.

Tonsillar Inflammation, a Rare Cause of Bradycardia and Hypotension

2018 ◽  
Vol 3 (3) ◽  
Keyword(s):  
Streptococcus Pyogenes ◽  
Fusobacterium Necrophorum ◽  
Outpatient Setting ◽  
Peritonsillar Abscess ◽  
The Other ◽  
Streptococcus Group ◽  
Other Hand ◽  
Group A

Tonsillitis is a frequently encountered pathology in the outpatient setting, usually caused by viruses [1]. When bacterial, the most common causatory microbe is streptococcus group A [1]. Tonsillar and peritonsillar abscess (PTA) on the other hand are never viral, and are usually caused by streptococcus pyogenes, Streptococcus melleri, fusobacterium necrophorum and staphylococci [1,2]. The overall incidence of PTA is suggested to be 37/100,000 patients, with the highest incidence between ages 14-21 at 124/100,000 [3].

Exemplar Abstract for Streptococcus pyogenes Rosenbach 1884 (Approved Lists 1980).

2003 ◽  
Author(s):  
Charles Thomas Parker ◽  
Dorothea Taylor ◽  
George M Garrity
Keyword(s):  
Streptococcus Pyogenes
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