scholarly journals Isolation, Detection and Characterization of Aerobic Bacteria from Honey Samples of Bangladesh

2018 ◽  
Author(s):  
Sarbojoy Saha
Keyword(s):  
Micrococcus Luteus ◽  
Klebsiella Pneumonia ◽  
Biochemical Tests ◽  
Gram Negative ◽  
Predominant Type ◽  
Medicinal Properties ◽  
Sweet Substance ◽  
Gram Positive Cocci

AbstractHoney is a sweet substance made from the nectar of flowers and other chemical secretions from the bees’ bodies who collect nectar from the flowers and bring it to their hives to transform it to the thick, golden and sweet liquid that we call honey. The benefits of honey are not just limited to its basic use as a natural sweetener, but also its medicinal properties. The purpose of this study was to identify the bacteria that are present in honey commonly found in Bangladesh, which can tolerate the antimicrobial conditions of honey and survive in it. Fortunately, such bacteria could be detected, isolated and characterized by morphological and biochemical tests. The predominant type of bacteria commonly found in both raw and commercial honeys of Bangladesh are gram positive cocci such as streptococci, staphylococci, micrococci, bacilli and lactobacilli. Few gram negative bacteria were also isolated like Escherichia coli (8%) and Klebsiella pneumonia (8%) and some gram negative/gram variable Micrococcus luteus (75%). Hopefully, such knowledge would benefit people in the future as they will know more about the microorganisms present in honey and about the safety and quality of the honey they are about to buy or consume.

scholarly journals The bacteriological quality of bottled natural mineral waters

1987 ◽  
Vol 99 (2) ◽  
pp. 439-443 ◽  
Author(s):  
P. R. Hunter ◽  
S. H. Burge
Keyword(s):  
Mineral Water ◽  
Mineral Waters ◽  
Gram Positive ◽  
Natural Mineral ◽  
Gram Negative ◽  
Point Of Sale ◽  
Natural Mineral Water ◽  
Bacteriological Quality ◽  
Gram Positive Cocci

SUMMARYFifty-eight bottles of natural mineral water, taken from the point of sale, were bacteriologically examined. No coliforms orAeromonas sp.were isolated from any sample. High total bacterial counts were found particularly in the still waters. Most of the organisms isolated in the total counts were Gram-negative rods, but Gram-positive organisms were also isolated. Gram-positive cocci were further identified, some of which were known human commensals suggesting contamination of the waters prior to bottling.

scholarly journals Bacteriological Profile of Neonatal Sepsis and Antibiogram of the Isolates

2017 ◽  
Vol 37 (1) ◽  
pp. 5-9
Author(s):  
Roshan Parajuli ◽  
Narayan Dutt Pant ◽  
Raju Bhandari ◽  
Anil Giri ◽  
Suman Rai ◽  
...  
Keyword(s):  
Staphylococcus Epidermidis ◽  
Neonatal Sepsis ◽  
Diffusion Method ◽  
Preliminary Treatment ◽  
Biochemical Tests ◽  
Gram Positive ◽  
Cross Sectional ◽  
Gram Negative ◽  
Bacteriological Profile ◽  
Gram Positive Cocci

Introduction: Neonatal sepsis is a serious problem in developing countries like Nepal. The main objectives of this study were to determine the bacteriological profile of neonatal sepsis, to determine the antimicrobial susceptibility patterns of the causative agents and to evaluate the association between the neonatal sepsis and the different characteristics of the neonates.Methods: A hospital based cross-sectional study was conducted among a total of 450 neonates suspected of suffering from sepsis. Blood culture was performed using statdard microbiological techniques. The colonies grown were identified on the basis of colony morphology, Gram’s stain and biochemical tests. The antimicrobial susceptiblility testing was performed by Kirby Bauer disc diffusion method. Results: Out of total 450 blood samples, 92 (20.4%) were culture positive. Of which,  16 (17.4%) samples contained  gram negative bacteria and 76 (82.6%) samples contained gram positive cocci. The most common bacterial pathogens isolated were Staphylococcus epidermidis (67.4%) followed by Escherichia coli (13%). All gram positive cocci were susceptible to vancomycin, while all gram negative bacilli were sensitive to amikacin. There was statistically significant relationship between neonatal sepsis and gestation age of neonates.Conclusions: Neonatal sepsis is still present as a serious problem in Nepal. Staphylococcus epidermidis was the most common cause of the neonatal sepsis. Prematurely delivered neonates should be given more care, as they are more prone to suffering from neonatal sepsis. Vancomycin and amikacin can be used as the drugs of choice for preliminary treatment of neonatal sepsis in our settings.

scholarly journals Molecular characterization of Pasteurella multocida pfhaB1 gene fragment from buffalo and cattle isolates from Nusa Tenggara Timur Indonesia

2019 ◽  
Vol 4 (2) ◽  
pp. 70-79
Author(s):  
Ine Karni ◽  
Didik Handijatno ◽  
Lucia Tri Suwanti ◽  
Kusnoto Kusnoto ◽  
Jola Rahmahani ◽  
...  
Keyword(s):  
Pasteurella Multocida ◽  
Gene Fragment ◽  
Macconkey Agar ◽  
Biochemical Tests ◽  
Gram Negative ◽  
Phylogenetic Relatedness ◽  
Haemorrhagic Septicaemia ◽  
Strain Vaccine ◽  
Almost All

Almost all regions in Nusa Tenggara Timur East Nusa Tenggara (NTT) Province Indonesia are endemic areas of Haemorragic Septicaemia (HS), which is caused by Pasteurella multocida  (P. multocida ) Serotypes B: 2. The fragment  pfhaB1gene is one of the virulence factors of P. multocida.The objective of this study was to determaine the phylogenetic, homology of P. multocidapfhaB1gene fragment of isolatedfrom Buffalo and Cattle in NTT. The P. multocida isolateswere re-cultured and further microscopic examined the biochemical tests, PCR, sequencing, homology, and phylogenetic relatedness test. P. multocida was observed as gram negative, coccobacilus, no growth on MacConkey Agar, does not produce H2S and gas, nonmotile and indole positive, does not produce urease enzymes, does not use citrate as a carbon source, does not ferment maltose and lactose but it does ferment glucose, sucrose and mannitol. ThepfhaB1gene fragmentfrom buffalo and cattle NTT isolates and also Katha strain vaccine showed DNA band 506 bp. P.multocida isolates from buffalo and cattle in NTT have 91% - 99% score homology with the comparative isolate. The isolate P. multocida from buffalo and cattle in NTT are in one cluster and their phylogenetic relatedness is close to isolates from Iran and India. It is concluded that the  pfhaB1gene fragmentof P. multocida from buffalo and cattle isolates have phylogenetic relatedness close and homolog with the other comparative isolates.    Keywords: Haemorrhagic Septicaemia; Nusa Tenggara Timur; Pasteurella multocida;  pfhaB1gene

scholarly journals Detection of Extended-Spectrum β-Lactamases (ESBL) Producing Enterobacteriaceae from Fish Trapped in the Lagoon Area of Bizerte, Tunisia

2020 ◽  
Vol 2020 ◽  
pp. 1-9 ◽  
Author(s):  
Bilel Hassen ◽  
Ahlem Jouini ◽  
Monia Elbour ◽  
Safa Hamrouni ◽  
Abderrazek Maaroufi
Keyword(s):  
Animal Health ◽  
Klebsiella Pneumonia ◽  
Citrobacter Freundii ◽  
Gram Negative ◽  
E Coli ◽  
Shigella Boydii ◽  
Extended Spectrum ◽  
Fish Samples ◽  
Esbl Producers

Extended-spectrum β-lactamase and their molecular mechanism in Enterobacteriaceae were analyzed in 126 fish samples of 9 various wild species, living in the lagoon of Bizerte in Tunisia. Fifty-nine (59) Gram-negative strains were isolated and identified as Escherichia coli (n=24), Klebsiella pneumonia (n=21), Citrobacter freundii (n=8), and Shigella boydii (n=6). Forty-seven ESBL producers were identified using the synergic test. β-Lactamase genes detected were blaCTX-M-1 (E. coli/15; K. pneumonia/8; C. freundii/1; Sh. boydii/1), blaCTX-M-1+ blaOXA-1 (E. coli/4; K. pneumonia/3), blaCTX-M-1+ blaTEM-1-a (K. pneumonia/2), blaCTX-M-15+ blaTEM-1-a (K. pneumonia/1; Sh. boydii/1), blaCTX-M-15+ blaOXA-1 (K. pneumonia/1), blaCTX-M-15 (E. coli/3; K. pneumonia/1; Sh. boydii/3), and blaCTX-M-9 (C. freundii/3). Most strains (84.7%) showed a multiresistant phenotype. qnrA and qnrB genes were identified in six E. coli and in ten E. coli+one K. pneumonia isolates, respectively. The resistance to tetracycline and sulfonamide was conferred by the tet and sul genes. Characterization of phylogenic groups in E. coli isolates revealed phylogroups D (n=20 strains), B2 (n=2), and A (n=2). The studied virulence factor showed prevalence of fimA genes in 9 E. coli isolates (37.5%). Similarly, no strain revealed the three other virulence factors tested (eae, aer, and cnf1). Our findings confirmed that the lagoons of Bizerte may be a reservoir of multidrug resistance/ESBL-producing Enterobacteriaceae. This could lead to indisputable impacts on human and animal health, through the food chain.

scholarly journals The results of using xerostom mouthwash in complex treatment of patients with xerostomia

2020 ◽  
Vol 24 (5) ◽  
pp. 318-320
Author(s):  
Vasiliy V. Afanasiev ◽  
N. S. Vinokurov
Keyword(s):  
Oral Cavity ◽  
Antibacterial Properties ◽  
Klebsiella Pneumonia ◽  
Complex Treatment ◽  
Gram Negative ◽  
Foreign Companies ◽  
Saliva Substitutes ◽  
The Russian Federation

Introduction. Xerostomia is a permanent or temporary feeling of dryness of the oral cavity. It can be objective or subjective and is characterized by complaints of dryness of the oral cavity, discomfort when talking and eating, as well as a decrease in free saliva, which significantly impairs the quality of life. The diverse causes of xerostomia, including diseases of the salivary glands, long-term use of homeopathic, cardiac, etc. remedies, consequences of radiation therapy, etc. Materials and methods. Treatment of patients with xerostomia is mainly symptomatic, using salivozameniteli. In the Russian Federation, various saliva substitutes are presented by foreign companies. Among them, stands out a set (line) of salivozamenitele Xerostom. Therefore, we conducted a study of the effectiveness of the rinse aid, and also studied its antibacterial properties in patients with true xerostomia. Conclusion. It was found that the Xerostom rinse aid was effective in 70% of patients. At the same time, the rinse aid did not have antibacterial properties in relation to gram-positive aerobic S. Aureus and gram-negative anaerobic Klebsiella pneumonia.

scholarly journals Synthesis and Structural characterization of hydroxyapatite nanorods: Antibacterial activity and dermal irritation

2020 ◽  
Author(s):  
G. García Domínguez ◽  
Aristeo Garrido Hernández ◽  
S. Díaz de la Torre ◽  
L. Chávez Guitrón ◽  
M. Cruz Quezada ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Micrococcus Luteus ◽  
Hexagonal Phase ◽  
Sodium Dodecyl ◽  
Klebsiella Pneumonia ◽  
Streptococcus Anginosus ◽  
Dermal Irritation ◽  
Cationic And Anionic Surfactants ◽  
Structural Characterizations

Abstract Hydroxyapatite (HA) nanoparticles with homogeneous rod morphology were successfully synthesized by the hydrothermal method. The use of cationic and anionic surfactants (cetyltrimethylammonium bromide, CTAB, and sodium dodecyl sulfate, SDS) does not change the morphology, but the length/diameter ratio of HA nanorods did. The structural characterizations revealed well-crystallized samples in the hexagonal phase. The HA samples with a smaller Ca/P ratio presented larger crystalline size. The CTAB- sample present antibacterial activity against Pseudomonas aeruginosa, Escherichia coli, Streptococcus anginosus, Staphylococcus aureus, Micrococcus luteus, and Klebsiella pneumoniae suggesting that the bacteria nature and surface charge of nanoparticles affect the susceptibility.

scholarly journals Study of Aerobic Bacterial Etiology and Their Antibiogram from Pus Samples in a Tertiary Care Hospital

2021 ◽  
Vol 8 (4) ◽  
pp. 358-362
Author(s):  
T. Kanakadurgamba ◽  
Rama Lakshmi Koripella ◽  
B. Gowtham
Keyword(s):  
Staphylococcus Aureus ◽  
Multidrug Resistant ◽  
Diffusion Method ◽  
Resistant Bacteria ◽  
Klebsiella Pneumonia ◽  
Microbiological Analysis ◽  
Gram Positive ◽  
Gram Negative ◽  
Culture Positive ◽  
Gram Positive Cocci

Introduction: The spread of multidrug resistant bacteria has added a new angel to the problem of wound infections which are a major cause of morbidity. To avoid difficulty in treatment of such infections it is mandatory for every pus sample to undergo Culture and sensitivity. Aim: To isolate and study the antibiogram of the aerobic bacteria from pus samples. Materials and Methods: A total of 426 pus samples received from various wards in the Microbiology department. Andhra Medical College, Visakhapatnam were processed as per standard guidelines in the laboratory. All the aerobic bacterial isolates obtained were kept for antibiogram by Kirby Bauer’s disc diffusion method as per CLSI Guidelines. Results: Out of 426 samples 394 (92.4%) were culture positive. Among culture positive samples 90.6% were pure cultures and 9.4% were mixed isolates. Gram negative bacilli were 72.8% of the total isolates and 27.2% were Gram positive cocci. Escherichia coli and Klebsiella pneumonia were the predominant isolates (30.3% and 28.9%) followed by Pseudomonas aeruginosa (24%), Proteus species (9.7%) and Acinetobacter species (6.9%). Among Gram positive cocci Staphylococcus aureus (62.6%), Enterococci (20.5%) and Coagulase Negative Staphylococcus (11.2%) and Streptococci (3.7%). GNB were more sensitive to Colistin (92%), Amikacin (86%), Imipenem and Meropenem (86% and 84.4%), Piperacillin Tazobactam (84%), Gentamycin (78%), Cefaperazone Sulbactam (76.2%) and Ciprofloxacin (56%). Gram positive cocci were sensitive to Linezolid and Teicoplanin (98% each), Vancomycin (96.2%), Clindamycin (84%), Gentamycin (79%), Azithromycin (76.4%), Ciprofloxacin (66%) and Amoxiclav (54%) out of 62.6% Staphylococcus aureus isolates 31.4% were MRSA and out of 72.8% of Gram negative bacilli 38.2% were ESBLS. Conclusion: As multidrug resistant bacterial strains are emerging in various infectious and pyogenic wound infection is most important cause of morbidity, it is important for a clinician to send all pus samples for microbiological analysis and their antibiogram before putting cases on antibiotics. Keywords: Pus samples, Multidrug resistance, Gram negative bacilli, Gram positive cocci, Antimicrobial sensitivity.

scholarly journals ISOLATION AND CHARACTERIZATION OF PHENANTHRENE DEGRADATING BACTERIA FROM DAIRY WASTE SAMPLES

2020 ◽  
Vol 8 (12) ◽  
pp. 372-380
Author(s):  
Gunti Vijay Kumar ◽  
◽  
Pandu Brahmaji Rao ◽  
Keyword(s):  
Agar Medium ◽  
Micrococcus Luteus ◽  
Pcr Amplification ◽  
Molecular Techniques ◽  
Biochemical Tests ◽  
Hazardous Chemical ◽  
Isolation And Characterization ◽  
Dairy Waste ◽  
Degrading Bacteria

Phenanthrene is the commonly used hazardous chemical in various industries and the detoxification is a big problem till today. In this study, phenanthrene degrading bacteria were isolated from dairy waste samples, characterized by molecular techniques. A total of 10 samples were collected respectively from different spots of dairy industry. Minimum salt agar medium with phenanthrene composition was used to isolate the pure culture of resistant bacterium. Morphological, biochemical tests were done to identify the phenanthrene degrading bacteria. The colonies of the isolates were circular to irregular in dairy samples. Phenanthrene tolerant bacteria were isolated after the dairy waste soil samples was serially diluted and transferred onto M9 minimal agar medium amended with 10mg/l of phenanthrene. A concentration of 10 mg/l was chosen based on the prevailing concentration. Four Phenanthrene tolerant bacteria from dairy waste (HW2, HW1, HW3, HW5) were isolated. From the biochemical and 16srRNA PCR amplification, the bacterium identified was Micrococcus leuteus. The resistance to Phenanthrene by the isolate was tested with various concentrations of Phenanthrene from 0 to 10mM. The Micrococcus luteus showed a MTC value of 28Cfu/ml at 8mM and Bacillus cereus showed least.

scholarly journals OBTENÇÃO E CARACTERIZAÇÃO DE EXTRATO BRUTO DE CAVALINHA PARA FINS MEDICINAIS

2019 ◽  
Vol 10 (2) ◽  
pp. 75
Author(s):  
Andreza Ribeiro Simioni ◽  
Tábada Maria Sales Pereira ◽  
Alexandro Da Silva Abreu ◽  
Janicy Arantes Carvalho ◽  
Ana Valéria de Moraes ◽  
...  
Keyword(s):  
Folk Medicine ◽  
Crude Extracts ◽  
Equisetum Hyemale ◽  
The Family ◽  
Medicinal Properties ◽  
Uv Visible ◽  
Thermal Influence ◽  
Chemical Influence

O uso de plantas medicinais para o tratamento de doenças está associado à medicina popular de diferentes partes do mundo. A cavalinha, pertencente à família Equisetaceae, é amplamente distribuída na região sul do Brasil. Possui propriedades medicinais, tais como diurética, hemostática, anti-inflamatória, cicatrizante, dentre outros princípios ativos intrínsecos. O presente trabalho teve por objetivo a obtenção de extratos brutos da planta Equisetum hyemale por uso de dois métodos extrativos diferentes, a caracterização dos extratos por meio de suas propriedades e potencialidades medicinais e avaliação do efeito da temperatura em ambos os extratos. Os resultados permitiram a comparação de ambos os métodos extrativos, por influência térmica (Soxhlet) e influência química (Maceração), utilizando técnicas como espectroscopia no Uv-visível e na região do Infravermelho, que permitiram a quantificação de clorofila e da atividade antioxidante. O cultivo celular em monocamadas como modelo biológico permitiu avaliar a citotoxicidade dos extratos brutos. Tendo em vista a carência de pesquisas científicas sobre o mecanismo de extração de ativos de origem vegetal, este trabalho contribui para a área de produtos naturais, os quais são utilizados para a melhoria da qualidade de vida.Palavras-chave: Extração. Caracterização. Cavalinha.ABSTRACTThe use of medicinal plants for the treatment of diseases is associated with folk medicine from different parts of the world. The “cavalinha”, belonging to the family Equisetaceae, is widely distributed in southern Brazil. It has medicinal properties such as diuretic, hemostatic, anti-inflammatory, healing, among other intrinsic active ingredients. The objective of the present work was to obtain crude extracts from the Equisetum hyemale plant by using two different extractive methods, the characterization of the extracts by their medicinal properties and potentialities and the evaluation of the temperature effect on both extracts. The results allowed the comparison of both extractive methods, by thermal influence (Soxhlet) and chemical influence (Maceration), using techniques such as UV-visible and Infrared spectroscopy, which allowed the quantification of chlorophyll and antioxidant activity. Cell culture in monolayers as a biological model allowed to evaluate the cytotoxicity of crude extracts. Given the lack of scientific research on the mechanism of extraction of plant-based assets, this work contributes to the area of natural products, which are used to improve the quality of life.Keywords: Extraction. Characterization. Cavalinha.

scholarly journals Assessment of the Bacterial Pollution and Detection of Antibiotic Resistance Genes in Benin: Case of the Hydrographic Channel Complex Cotonou-Nokoué Lake

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Oloufemi Daniel Ichola ◽  
Victorien Tamegnon Dougnon ◽  
Charles Hornel Koudokpon ◽  
Alidehou Jerrold Agbankpe ◽  
Esther Deguenon ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Resistance ◽  
Resistance Genes ◽  
Water Samples ◽  
Bacterial Species ◽  
Resistant Bacteria ◽  
Biochemical Tests ◽  
Gram Positive ◽  
Gram Negative ◽  
Gram Positive Cocci

The study aims to document the level of contamination of the aquatic ecosystem of the Cotonou-Lake Nokoué canal hydrographic complex by multidrug-resistant bacteria and their resistance genes. For this purpose, water samples were taken from several points of the complex and from the sediments at the depth of the lake. Samples of several species of freshly caught fish products from the lake were also collected. Bacteriological analyses were carried out according to the AFNOR standard (NF U: 47–100). The identification of the different bacterial species isolated was then carried out using the API 20E gallery and specific biochemical tests. The antibiogram of the strains was performed according to the recommendations of the EUCAST. Molecular characterization of the identified strains was carried out by searching for resistance and virulence genes. The results obtained revealed the presence of several bacterial species in water samples and in sediment and intestine samples of fishery products with a predominance of Gram-negative bacilli. The resistance profile of Gram-negative bacilli showed a total resistance to metronidazole (100%). 23% of the strains were also resistant to ciprofloxacin, 41% to amoxicillin, and 60% to aztreonam. Of the Gram-positive cocci identified, 66% was resistant to vancomycin, 7.5% to ciprofloxacin, 71% to erythromycin, and 22% to tetracycline. Regarding the genes sought, blaTEM (46%), blaSHV (24%), and blaCTX-M-15 (31%) were present in the genome of Gram-negative bacilli as resistance genes and fimH (41%) as virulence gene. As for Gram-positive cocci, the van B gene was completely absent. The van A was present at 6.25% in Staphylococcus aureus and mecA at 21.88 and 33.33%, respectively, in Staphylococcus aureus and coagulase-negative staphylococci strains. The high resistance of isolated bacterial strains is a matter of concern and calls for a rational use of antibiotics in order to avoid the transmission of antibiotic resistance from the environment to humans.

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