African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5200

AJMR Articles

Purification and molecular characterization of chitinases from soil actinomycetes

July 2017

Microbial extracellular chitinases are used in agriculture as effective biocontrol agents and in waste degradation, pharmaceutical and food industry. Actinomycetes are widely tapped group for production of extracellular chitinases. In the present study, approximately 260 actinomycetes were isolated from various ecological habitats was subjected to primary analyses and screened for production of chitinase by plate assay...

Author(s): Payal Das, Prateek Kumar, Munendra Kumar, Renu Solanki and Monisha Khanna Kapur

Improvement of decontamination and isolation protocols for Mycobacterium avium subspecies paratuberculosis (MAP) from raw milk samples

July 2017

Most protocols regarding sample decontamination for Mycobacterium avium subspecies paratuberculosis (MAP) isolation are based on the MAP detection from feces and not milk. The choice of the best decontamination protocol is crucial to a successful MAP isolation. In this study, 36 combinations of variables for sample decontamination and MAP isolation from raw milk presented in the literature were carried out on milk...

Author(s): Isabel Azevedo Carvalho, David Germano Gonçalves Schwarz, Pricila Aparecida Grasse Pietralonga, Ana Carolina Silva Faria, Juaci Vitória Malaquias and Maria Aparecida Scatamburlo Moreira

Prevalence and resistance profile of extended-spectrum β-lactamases-producing Enterobacteriaceae in Ouagadougou, Burkina Faso

July 2017

Increasing bacterial resistance to antimicrobial agents has become an issue of concern. A major problem of the treatment of infections caused by Enterobacteriaceae using antibiotics is the emergence of Extended-spectrum β-lactamases (ESBL)-producing Enterobacteriaceae. This study aims to determine the prevalence of ESBL-producing Enterobacteriaceae strains in Ouagadougou, Burkina Faso, and describe their resistance...

Author(s): Dissinviel Stéphane Kpoda, Nathalie Guessennd, Juste Isidore Bonkoungou, Mohamed Baguy Ouattara, Fernique Konan, Abraham Ajayi, Jacques Simpore, Rasmata Ouedraogo, Koiné Maxime Drabo, Lassana Sangare, Mireille Dosso and Alfred Traore

Biological control of potential antagonistic bacteria isolates to restrict Magnaporthe grisea infection on rice

July 2017

Rice blast caused by Magnaporthe grisea, frequently affects rice in the world. This research is intended to screen biological control agents for controlling M. grisea, referencing the study biological control agents testing approaches, since biological control is an environmentally friendly plant disease controlling approach. 710 bacterial isolates were discovered from rice tissues, of which hopeful biological control...

Author(s): David P. Tokpah, , Hongwei Li, John T. Newmah, Zipporah Page, Zogbo Luther, Charles F. King, Melissa S.  Smith and Victor M. Voor

Effect of the fermentation on the microbial population occurring during the processing of zoom-koom, a traditional beverage in Burkina Faso

July 2017

Zoom-koom is a traditional fermented beverage from Burkina Faso based on cereals such as millet or sorghum. Samples were collected from two local production sites of microenterprises (Zogona and Dassasgho). Microorganisms dynamic during the production of zoom-koom were enumerated using pour plate methods. The titratable acidity, pH and temperature of fermentation were determined using respectively titrimetric and...

Author(s): Fidèle Wend-bénédo TAPSOBA, Hagrétou SAWADOGO-LINGANI, Donatien KABORE, Diarra COMPAORE-SEREME, and Mamoudou Hama DICKO

Bacteriological quality of drinking water from source to point of use among rural communities of Farta Woreda in North West, Ethiopia

July 2017

Access to safe water is a universal need. However, many of the world’s population lack access to adequate and safe water. Consumption of contaminated water with viruses, bacteria and parasites causes health risk to the public and the situation is serious in rural areas. So this study is aimed at assessing the bacteriological quality of drinking water at source and point of use among rural Communities of Farta...

Author(s): Genet Gedamu Kassie and Desta Haftu  Hayelom

Evaluation of semi-nested polymerase chain reaction (PCR) and mannan antigen detection compared to blood culture for diagnosis of candidemia

July 2017

Invasive Candida infections have emerged as an important pathogen in the last decade, especially in immunocompromized patients. The aim of the present study was to evaluate the detection of Candida species in blood samples from pediatric patients with sepsis by blood culture method versus antigen detection method by enzyme linked immunosorbent assay (ELISA) and molecular method by polymerase chain reaction (PCR). This...

Author(s): Nashwa M. Al-Kasaby, Nermein Abou El Kheir, Mohammed Mefreh and Maysaa El Sayed Zaki

Antibiofilm activity of natural substances derived from plants

July 2017

The main objective of this study was to conduct a review of bioactive substances derived from plants which show antimicrobial/antibiofilm properties. Vegetable species were widely employed as ingredients in medicine based on traditional knowledge. Various secondary metabolites have been proven to inhibit bacterial growth. Bacterial resistance mechanisms have increased over the years. Biofilms are types of bacterial...

Author(s): José Walter Araújo Nogueira, Renata Albuquerque Costa, Magda Turini da Cunha and Theodora Thays Arruda Cavalcante

In vitro efficacies and durabilities of antibiotic/vitamin C coated hemodialysis catheters

July 2017

Catheter associated bloodstream infections, exit-site infections, and tunnel infections are common complications related to hemodialysis central venous catheter use. Effective antimicrobial coating of catheters that can inhibit device colonization has the potential of preventing clinical infection. The study investigated in vitro the antimicrobial efficacies of hemodialysis catheters impregnated with an antibiofilm...

Author(s): Maria Refaat Boushra, Reham Ali Ibrahem, Gamal Fadl Gad and Hassan Mohammed Mohi El-Din

Prevalence of pathogenic and antibiotics resistant Escherichia coli from effluents of a slaughterhouse and a municipal wastewater treatment plant in Dakar

July 2017

The aim of this study was to detect and characterize pathogenic and antibiotic resistant Escherichia coli isolated from slaughterhouse wastewater and the effluents of a municipal wastewater treatment plant (WWTP) in Dakar, Senegal. Genetic markers associated with enterohemorrhagic E. coli (EHEC) and extraintestinal pathogenic E. coli (ExPEC) were screened in 268 E. coli isolates from slaughterhouse and 272 E. coli...

Author(s): Alpha Amadou Diallo, Delphine Bibbal, Fatou Tall Lô, Mbaye Mbengue, Mohamed Moustapha Sarr, Moussa Diouf, Yacine Sambe, Monique Kérourédan, Rianatou Alambédji, Yaya Thiongane, Eric Oswald and Hubert Brugère

Community knowledge and attitudes on antibiotic use in Moshi Urban, Northern Tanzania: Findings from a cross sectional study

July 2017

There is increasing and spread of antibacterial resistance to antibiotics worldwide. The level of knowledge and attitudes of the community regarding the use of antibiotics in Tanzania is unknown. The present study identified determinants of knowledge and attitudes regarding antibiotics use in Moshi Urban district, Northern Tanzania. A cross-sectional study was conducted from April to June 2016 among community members...

Author(s): Goodluck Mbwambo, Basiliana Emidi, Maseke R. Mgabo, Geofrey Nimrod Sigalla, and Debora C. Kajeguka

Development of the fly ‘crop vessel’ bioassay for fly/microbial studies

July 2017

The dipteran crop has been implicated in many fly/microbe associations. In most cases, reports merely identify that the microbe(s) in question is(are) found inside the crop, but very few studies have focused on their long-term presence within the crop. Possibly, one of the main reasons for this is that flies usually regurgitate their crop contents, which makes it difficult to do long-term studies. Because of this, an in...

Author(s): Lufan Wang, John G. Stoffolano Jr. and Lynne Mclandsborough

Biosorption of fireworks pollutants by indigenous soil fungi from Sivakasi, India

June 2017

Sivakasi a notable industrial town, which is known for its fireworks industries that accounts 70% of the country's yield. Besides largest production, release of the wide range of deleterious chemicals increases the concern about environmental conservation. Fungi are the eukaryotic organism which has enormous metabolite profile. These distinct features of fungi made excessive attention towards the mycoremediation....

Author(s): Neethimohan Malaieswari, Subramanian Mugesh, Ponnan Arumugam, Maruthamuthu Murugan

Microbial degradation of pesticide: A review

June 2017

Excessive use of pesticides has been known to be hazardous to the environment, affect soil fertility as well may impart toxicity in living beings. Presently there have been physical, chemical, biological and enzymatic approaches implicated to reduce pesticides. Although aimed to eradicate, physical and chemical methods are inefficient. Curiously, microbial pesticide remediation has been cost effective and...

Author(s): Satish G. Parte, Ashokrao D. Mohekar and Arun S. Kharat

Promising biosurfactant produced by a new Candida tropicalis UCP 1613 strain using substrates from renewable-resources

June 2017

The current work aimed to use agro-industrial wastes as a strategy to obtain biosurfactant from a new Candida tropicalis UCP 1613 isolated from mangrove sediments of Rio Formoso, Pernambuco State, Brazil. The yeast was identified based on 18S rRNA sequencing method and blast homology search. The promising strain showed the ability to use an optimal composition of a cheap medium containing whey (3%), cassava wastewater...

Author(s): Daylin Rubio-Ribeaux, Rosileide Fontenele da Silva Andrade, Goretti Sônia da Silva, Rodrigo Assunção de Holanda, Milagre Americo Pele, Patricia Nunes, José Carlos Vilar Junior, Maria Aparecida de Resende-Stoianoff and G. M. Campos-Takaki

Determination of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) using a novel dilution tube method

June 2017

A novel ‘dilution tube method’ (DTM) which is a modification of the ‘dilution method’ (DM) is hereby described for the determination of minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). This new DTM uses only broth medium in tubes and the required antibiotic. MIC and MBC for Escherichia coli, Klebsiella pneumoniae and Staphylococcus aureus were determined in...

Author(s): Chikezie Ihebuzoaju Owuama

Effectiveness of Pseudomonas species in the management of tomato early blight pathogen Alternaria solani

June 2017

Management of tomato early blight pathogen (Alternaria solani) has relied principally on application of synthetic fungicides. The use of biological control agents has been recognized as a viable option to synthetic chemicals in plant disease control. The present study evaluated the effects of Pseudomonas fluorescens, P. aeruginosa, P. putida, and P. cepacia on tomato early blight pathogen and investigated their efficacy...

Author(s): Abiodun Joseph, Osaretin Best Igbinosa, Elizabeth Tope Alori, Benson Oluwafemi Ademiluyi and Ajibola Patrick Aluko

Antimicrobial resistance patterns of Klebsiella isolates from clinical samples in a Saudi hospital

June 2017

Klebsiella infection is often the leading cause of morbidity and mortality. Resistance pattern of antimicrobial susceptibility to commonly prescribed drugs were studied in Klebsiella isolates from a hospital in Madinah, Saudi Arabia. Clinical samples were collected from 6840 patients and screened for Klebsiella species over a period of 14 months. The strains were identified using microbiological and biochemical tests...

Author(s): Samah Ghanem, , Hatem M. El Shafey, , El Kelani A. Tamer and Nikhat Manzoor,

Aspergillus niger LMM01: A new source of glucose oxidase in Amazon

June 2017

Glucose oxidase (GOx) has several industrial applications. It is believed that there are several species of fungi that have the ability to produce this enzyme, most of which are unexplored. This work aimed to investigate the production of glucose oxidase (EC by fungi isolated from soil samples of the Amazonian forest. Filamentous fungi were isolated from soil samples from the Adolpho Ducke Forest Reserve,...

Author(s): Diego Rayan T. Sousa, Elusiane S. Santos, Ana Cláudia A. Cortez and  João Vicente B. Souza,

Biochemical and molecular identification of newly isolated pigmented bacterium and improved production of biosurfactant

June 2017

A novel bacterium pigmented isolate from Caatinga soil was characterized by biochemical and molecular assays, as well as, by rep-polymerase chain reaction (PCR) and 16S rDNA sequencing, and was identified as Serratia marcescens based on 99% of similarity. The identity of the sequences were compared by pairs of critical species of S. marcescens found in National Center for Biotechnology Information (NCBI) with a 96%...

Author(s): Helvia W. Casullo Araújo, Rosileide F. S. Andrade, Dayana Montero-Rodríguez, Vanessa Pimentel Santos, Patrícia C. V. Souza Maia, Carlos F. B. Costa Filho, Carlos A. Alves da Silva and Galba Maria Campos-Takaki

Macrofungal diversity in the forest litter of Nadia District, West Bengal, India

June 2017

Litter decomposing macrofungi (LDM) and ectomycorrhiza (ECM) play vital roles in maintenance of forest ecosystem. Since these soil-litter dwelling fungi produce lignolytic enzymes, they have been proved useful in soil bioremediation. However, literature of these groups is limited and therefore it is important to record and identify them. This study reports the diversity of litter growing macrofungi in three sal (Shorea...

Author(s): Satadru Pramanik and Sujata Chaudhuri

Isolation and characterization of petroleum product emulsifying Pseudomonas strains from a generating set fuel tank

June 2017

This study characterized microbial strains isolated from diesel fuel samples collected from the tank of a generating set at the Institute of Research for Development in Pointe-Noire (Congo). Two bacterial isolates (G2 and G3) were distinguished by their color on agar plates and were characterized by their API 20E biochemical profiles and by 16S rRNA gene sequencing. The phenotypic properties of these isolates were...

Author(s): Lebonguy A. A., Goma-Tchimbakala J., Miambi E. and Keleke S.

Antimicrobial activity and FTIR characterization of lapachol derivatives against Staphylococcus aureus

June 2017

Lapachol is a natural naphthoquinone with important activity due to its chemical and structural properties. Nine semisynthetic derivatives of this substance were tested against strains of Staphylococcus spp. to identify the antimicrobial activity of these compounds. Only β-lapachone and oxime of lapachol showed good activity against the strains studied. The minimum bactericidal concentration values ranged from 62.5...

Author(s): Antônio Wilton Cavalcante Fernandes, Victória Laysna dos Anjos Santos, Cleônia Roberta Melo Araújo, Edigênia Cavalcante da Cruz Araújo, Helinando Pequeno de Oliveira and Mateus Matiuzzi da Costa

Factors associated with candidemia by non-albicans Candida group in midwest region of Brazil: Eight-year cross-sectional study

June 2017

The alarming increase in the non-albicans Candida group (NAC) as the etiologic agent of bloodstream infections has made it necessary for the factors associated with candidemia caused by NAC to be elucidated. A cross-sectional retrospective study was conducted which included analysis of microbiological reports, medical records and hospital infection notifications in two tertiary hospitals (Mato Grosso, Brazil) over 8...

Author(s): Hugo Dias HOFFMANN-SANTOS and Rosane C. HAHN

Antimicrobial effects of novel fluorous and non-fluorous surfactants

June 2017

Novel fluorous and non-fluorous surfactants have been synthesized and examined for their potential as microbicides compared with nonoxynol-9 (N-9) by testing their effects on Candida albicans (C. albicans) and Escherichia coli (E. coli). These compounds include nonionic surfactants consisting of F5-triethylene glycol (F5-TEG), F7-triethylene glycol (F7-TEG), C5-triethylene glycol (C5-TEG), C7-triethylene glycol...

Author(s): Kamonrat Phopin, and Barry S. Bean

Performance evaluation of oxacillin-resistant Staphylococcus aureus genotypes and taxa on human and animal blood agar culture media

June 2017

The performance characteristics of growth, morphological aspects and hemolytic activities of oxacillin-resistant S. aureus (ORSA) strains were studied on twelve types of blood agar (BA) culture media (sheep, bovine, horse, rabbit and human). ORSA isolates were also previously characterized by isoenzymes genotyping and genetic and grouping analysis. Variations in the diameter of the colonies were detected among seven...

Author(s): Marcelo Fabiano Gomes Boriollo,, Manoel Francisco Rodrigues Netto, Jeferson Júnior da Silva, Carlos Tadeu dos Santos Dias and José Francisco Höfling

Isolation and screening of amylase producing thermophilic spore forming Bacilli from starch rich soil and characterization of their amylase activity

June 2017

Thermostable amylases are the most important enzymes in present with potential industrial applications. The main objective of this study was to isolate and characterize thermophilic amylases from Bacilli found in starch rich soil. Amylase producing bacilli were isolated and their enzymes were also characterized. Effect of temperature, pH, substrate and salt concentration on amylases activity were determined. All...

Author(s): Mengistu Fentahun and Pagadala Vijaya Kumari

Phenotypic identification of Escherichia coli O157:H7 isolates from cattle at Suleja Abattoir, Nigeria

June 2017

Escherichia coli O157:H7 is a well-known pathogen of man and animals and a very low infection dose is needed to propagate the infection and clinical disease. In this study, a total of 515 rectal swab samples were collected from cattle and subjected to conventional biochemical tests. Presumptive identification on Eosine Methylene Blue (EMB) yielded an overall prevalence of 83.1%. Cefixime, Tallurite, Sorbitol MacConkey...

Author(s): Mailafia, S., Madubuike, S. A., Raji, M. A., Suleiman, M. M., Olabode, H.O. K., Echioda-Egbole, M. and Okoh, G. P. R.

Technology and microbiology of traditionally fermented food and beverage products of Ethiopia: A review

June 2017

Fermented food and beverage products are made globally by using different practices, fresh materials and microbes. Fermented foods have ample sources of essential vitamins, minerals, enzymes, and antioxidants that are all enhanced through the process of fermentation. The advantageous effects related with fermented products have a special prominence during the production of these products in unindustrialized countries...

Author(s): Guesh Mulaw and Anteneh Tesfaye

Efficient production of second generation ethanol and xylitol by yeasts from Amazonian beetles (Coleoptera) and their galleries

May 2017

Beetles of the Passalidae family live and feed on decaying wood and their guts are richly colonized by yeasts. The goal of this research was to prospect xylolytic yeasts with potential for the production of second-generation bioethanol. Therefore, 83 specimens of beetles belonging to the Passalidae and the Scarabaeidae families were collected in the Amazonian rainforest in Itacoatiara - AM, Brazil. Morphological...

Author(s): Gisele de Fátima Leite Souza, Luana Tainah Campos Nazaré Valentim, Samila Rayana Pinto Nogueira and Maxwel Adriano Abegg

Comparative assessment of Ni and As(III) mediated alterations in diazotrophic cyanobacteria, Anabaena doliolum and Anabaena sp. PCC7120

May 2017

The comparative effects of nickel (Ni2+) and arsenite (As(III)) on two diazotrophic cyanobacterial species were investigated in terms of photosynthetic attributes. Both metals demonstrated inhibitory effects on growth, pigments (chl a and phycocyanin) and photosystem II (PS II) photochemistry. However As(III) exerted severe effects as compared to Ni reflected by (1) reduced growth (2) significant inhibition of chl a and...

Author(s): Rajesh Prajapati, Shivam Yadav and Neelam Atri

Antimicrobial activity of selected plant species and antibiotic drugs against Escherichia coli O157:H7

May 2017

Recent research has focused on natural plant products as alternative for disease control in both developed and developing countries. Medicinal plants can be a possible source for new potent antimicrobial agents to which pathogenic strains are not resistant. The present study was carried out to determine the in vitro antimicrobial activity of 14 plant species namely; Allium sativum, Aloe vera, Bryophyllum pinnatum,...

Author(s): Itelima J. U., Agina S. E. and Pandukur S. G.

Microbiological study of ventilator associated pneumonia with antimicrobial susceptibility pattern of the isolated strains and its relation to nasal colonization in neonatal intensive care unit

May 2017

The aim of this study is to analyze the microbiological profile of ventilator associated pneumonia (VAP) in relation to nasal swabs and prevalence of multi-drug resistant bacteria so as to implement effective treatment and prevention strategies in NICU (Neonatal Intensive Care Unit). One hundred neonates were ventilated for more than 48 h and met the inclusion criteria which were enrolled in the study. All cases were...

Author(s): Rasha Alm El-Din, Heba El-Mahdi, Shimaa El-Refae and Mohamed EL-Sanosy

Nosocomial infections in intensive care and medical rehabilitation units, and evaluation of antibiotics prescription

May 2017

Although, nosocomial infections (NIs) are considered to be an important cause of mortality and prolonged stay in hospitals, there are only a few studies that are concerned with their prevention and reduction in rehabilitation units. This could be because most NI surveys have been carried out mainly in acute and long-stay in hospitals. As a result, limited information is available on prevention and reduction of NIs in...

Author(s): Al-Shenqiti A., Bahashwan S. A., Ghanem S., Manzoor N., and El Shafey H. M.,

Diversity and distribution of fungal communities within the hot springs of soda lakes in the Kenyan rift valley

May 2017

Fungi are highly diverse and versatile, with members growing under different environmental conditions including extreme environments. Although fungal communities in some extreme environments have been investigated in recent years, little is known about their structure and richness within the hot springs of soda lakes in Kenya. The aim of the study was to determine the biogeography and diversity of fungi from the hot...

Author(s): Odilia Atamba Salano, Huxley Mae Makonde, Remmy Wekesa Kasili, Laura Nyawira Wangai, Mildred Pauline Nawiri and Hamadi Iddi Boga

Colorimetric gold nanoparticles-based assay for direct detection of Clostridium difficile in clinical isolates from Qatar

May 2017

Clostridium difficile infection (CDI) is a significant health problem worldwide. Control and prevention strategies of C. difficile horizontal transmission require assays with fast detection with high specificity and sensitivity. Conventional diagnostic methods are time consuming and costly for clinical field settings. This study aims to develop gold nanoparticles (AuNPs)-based assay for direct qualitative detection of...

Author(s): Tahani M. Al-Saadi, Nahla O. Eltai, Wedad S. Hamdi, Fadheela Dad Bakhsh, Hassan Azzazy, Nasser Al-Ansari and Asmaa Al-Thani,

Characterisation and evaluation of thiol-releasing and lower volatile acidity forming intra-genus and inter-genus hybrid yeast strains for Sauvignon Blanc wine

May 2017

Wine yeast expressed proteins are influential during the production of varietal aromatic Sauvignon Blanc wines as they release or mediate aroma compounds and undesirable volatile acidity (VA). As Torulaspora delbrueckii in conjunction with Saccharomyces cerevisiae as well as a S. cerevisiae/T. delbrueckii inter-genus hybrid were previously shown to produce white wine with enhanced aroma and/or lower VA, intra- and novel...

Author(s): R. S. Hart, B. K. Ndimba, and N. P. Jolly

Diversity and bioprospecting potential of rhizo and endophytic bacteria from two mangrove plants in Saudi Arabia

May 2017

Mangrove plants are located on coastal area of sea and harbor diverse communities of microorganisms. The aim of our present study was to isolate bacteria from two different mangroves collected from the coastal area of Thuwal, Saudi Arabia and to further screen them for their antimicrobial activities. We have isolated 317 different rhizo and endophytic bacteria from mangroves using soil, roots and leave tissues. Bacteria...

Author(s): Fehmida Bibi, Ikram Ullah, Sana Akhtar, Muhammad Yasir, Eman Ahmed Kensarah, Ahmed Abdullah Khalaf Al-Ghamdi, Esam I. Azhar,

Atypical manifestation in infection by methicillin-resistant Staphylococcus aureus carrier SCCmec IV and Panton-Valentine Leukocidin-producer in experimental sepsis model

May 2017

Staphylococcus aureus is considered an infectious agent of great clinical importance, responsible for many different types of infection. Strains of methicillin-resistant Staphylococcus aureus (MRSA), Panton-Valentine leukocidin producers, are considered more invasive, presenting clinical sequelae related to abscesses and infection in skin and soft tissues. The use of invasive techniques in hospital environment, such as...

Author(s): Giorgio Silva-Santana, Kátia C. Lenzi-Almeida, Vânia G. S. Lopes and Fábio Aguiar-Alves,

Development and application of an enzyme-linked immunosorbent assay (ELISA) using a soluble recombinant nucleoprotein for the detection of antibodies to avian influenza virus

May 2017

Avian influenza (AI) causes significant impact on industrial poultry farming, besides infecting a variety of vertebrates. The detection of antibodies against viral antigens by serological methods is important for the epidemiology, control and prevention of AI because their high simplicity and speed for assaying a large number of samples. Obtaining antigenic preparations used for detection of anti-avian influenza virus...

Author(s): Mariana Monezi Borzi, Ketherson Rodrigues Silva, Maria de Fatima Silva Montassier, Filipe Santos Fernando, Maria de Lourdes Feres Tamanine, Romeu Moreira dos Santos, Elisabete Schirato de Oliveira, Viviane Casagrande Mariguela, Priscila Diniz Lopes, Dilmara Reischak, André Oliveira Mendonça, Renato Luis Luciano and Helio José Montassier

Antimicrobial susceptibility patterns of Staphylococcus aureus and coagulase negative staphylococci isolated from humans in Nairobi, Kenya

May 2017

Nosocomial infections due to multidrug resistant Staphylococcus aureus are an important health problem worldwide. Antimicrobial resistance prolongs the duration of hospitalization, thereby increasing the cost of patient care. For a long time, methicillin was considered as drug of choice for treatment of penicillin-resistant staphylococcal infections. Emergence of methicillin resistance reduced the available options for...

Author(s): Raphael Z. Sangeda, Sam Lifumo, Anne W. Muigai, Peter G. Waiyaki and Samuel Kariuki

Serological detection of bacterial pathogens associated with rotted potato tubers

May 2017

Studies were conducted in the Department of Plant Pathology, College of Agriculture, Orissa University of Agriculture and Technology, Odisha, India in 2010-2011 on serological detection methods for identification of bacterial pathogens associated with rotted potato tubers. One hundred and two rotten potato tubers of KufriJyoti variety were collected from freshly harvested lot of All India Co-ordinated Potato Improvement...

Author(s): Biswal G. and Dhal N. K.

Phenotypic detection of extended spectrum beta-lactamase in multidrug-resistant Escherichia coli from clinical isolates in Niamey, Niger

May 2017

Extended spectrum beta lactamase (ESBL) producing Enterobacteriaceae is one of the main causes of antibiotic treatment failure in hospitals. The aim of this study was to evaluate the prevalence of ESBL produced by multidrug-resistant (MDR) Escherichia coli isolated from various clinical samples (urine, stool, pus, blood culture) in the “Hôpital National de Niamey” and the “Hôpital National...

Author(s): Alio Mahamadou Fody, Laouali Boubou, Ali Moussa, Hadiza Ibrahim Bawa, Ali Konaté, Chaibou Yaou, Cheikna Zongo, Chaibou Salaou, Alhousseini Daouda, Ramatou Sidikou, Alfred S. Traoré and Nicolas Barro

Pleurotus albidus: A new source of milk-clotting proteases

May 2017

Researches have been done to discover new sources of microbial proteases with milk-clotting activity to replace the traditional rennet from calves. The aim of this study was to select a species of edible mushroom as milk-clotting enzymes producer using the submerged fermentation technology. From the six species evaluated, Pleurotus albidus was the one that expressed the highest value of coagulant ratio (21.60). The...

Author(s): Salomão Rocha Martim, Larissa Svetlana Cavalcanti Silva, Leilane Bentes de Souza, Edson Júnior do Carmo, Mircella Marialva Alecrim, Marne Carvalho de Vasconcellos, Ila Maria de Aguiar Oliveira and  Maria Francisca Simas Teixeira

Evaluation of the antimicrobial activities of Cymbopogon schoenanthus

May 2017

Medicinal plants have been widely used in folk medicine. They are considered today as an interesting source of new drug due to their bioactive components. The genus, Cymbopogon (Poaceae) seems to be the most promising source of several bioactive compound. This study aimed at evaluating the antimicrobial activities of Cymbopogon schoenanthus on several pathogenic bacteria, fungi and virus. Antibacterial and antifungal...

Author(s): Khalil H. AL ALI Nadir A. Ibrahim, Ali A. Abdulrahman Ahmed , Hassan A. Hemeg, Mouostafa A. Abdelgawwad and Hassan A. Abdel-Salam

Phomopsis sp. as an endophyte of Turnera subulata L.: Isolation, identification and antimicrobial and antioxidant activity of their extracts

May 2017

Turnera subulata L. is a plant that belongs to the Turneraceae family and is popularly known in Brazil as “Chanana”; it is used as an alternative medicine. Among all microorganisms, fungi are mostly associated with plants. The aim of this study is to isolate, identify and evaluate the antifungal and antioxidant activity of extracts of Phomopsis sp. isolated from T. subulata. From the leaf fragment obtained...

Author(s): Giancarlo de Brito Lyra Santos, Luiz Carlos Caetano, Ariana Rafaela da Silva Nascimento, Roberto Ramos Sobrinho, Ricardo Manoel dos Santos Silva, João Manoel da Silva, Tania Marta Carvalho dos Santos and Yamina Coentro Montaldo

Phosphate solubilizing fungi isolated and characterized from Teff rhizosphere soil collected from North Showa zone, Ethiopia

May 2017

Phosphorus is one of the major bio elements limiting agricultural production. About 95 to 99% phosphorus in agricultural soil is unavailable form for plant growth. Phosphate solubilizing microorganisms can increase soil phosphate availability. This study was aimed to identify and evaluate phosphate solubilizing fungi from Teff rhizosphere soil. Fungi were identified using lactophenol cotton blue staining confirmation...

Author(s): Birhanu Gizaw, Zerihun Tsegay, Genene Tefera, Endegena Aynalem, Misganaw Wassie and Endeshaw Abatneh

Antagonistic effect of lactobacilli isolated from camel (Camelus dromedarius) milk on food borne pathogens

May 2017

Camel milk is a suitable substrate for the growth of protective bacterial flora. Detection of lactic acid bacteria producing antimicrobial substances from camel (Camelus dromedarius) milk in south Algeria against some food-borne pathogens is the subject of this work. Morphological, physiological and biochemical tests have identified four Lactobacillus isolates belonging to the following species: Lactobacillus fermentum,...

Author(s): Amira BENTOURA, Malek AMIALI, Mohammed Yehya El Amin AISSIOU and Arezki BITAM

Helicobacter pylori cytotoxin-associated gene A protein among adult dyspeptic patients in South-western Nigeria

May 2017

cagA gene, a marker for the cag pathogenicity island (CagPAI) and a virulent factor in Helicobacter pylori infection codes for 120 to 145 kDa protein that is associated with cytotoxin production and more severe clinical outcomes. The aim of this study was to determine whether any correlation exists between H. pylori CagA protein and the endoscopic findings among dyspeptic patients from South-western, Nigeria and also to...

Author(s): Abiodun Tola Seriki, Stella Ifeanyi Smith, Adeyemi Isaac Adeleye, Muinah Adenike Fowora, Olufunmilayo Lesi, Charles Onyekwere, Dennis Ndububa, Olusegun Adekanle, Jesse Abiodun Otegbayo and Adegboyega Akere

Evaluation of microbial adverse effects on fresh and processed bovine meat in N'Djamena (Chad) and Yaoundé (Cameroun)

April 2017

A study from May 2015 to February 2016 was conducted in N'Djamena and Yaoundé regions to assess the microbial hazards associated with fresh and transformed bovine meat. A total of 120 samples of dried, fresh and spicy dry meat (kilichi) were collected. The microbiological results showed that 70% of dried meat from N’Djamena had Escherichia coli as major contaminant compared to 55% of dried meat from...

Author(s): D. Kimassoum,, S. L. Sado Kamdem, B. N. Ngandolo, K. C. Fatou, A. M. Nji, N. M.  Bawe, B. Mobeal, D. Nadjilem and W. F. Mbacham,

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