African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5176

AJMR Articles

Effectiveness of augmented consortia of Bacillus coagulans, Citrobacter koseri and Serratia ficaria in the degradation of diesel polluted soil supplemented with pig dung

October 2016

Laboratory studies were developed to compare the effectiveness of inoculated bacteria consortia and indigenous microorganisms on diesel-polluted soil for 18 days. Bacteria isolated from the unpolluted soil sample were: Pseudomonas spp. (LBI), Pseudomonas cepacia (LB5), Micrococcus luetus (LB2), Bacillus subtilis (LB3) and Bacillus cereus (LB4). Their ability to degrade different substrates were first studied by the...

Author(s): Fagbemi O. Kehinde and Sanusi A. Isaac

Soil bacteriological pollution in pig farm vicinity: Assessment of bacterial dynamics and detection of antimicrobial resistance gene

October 2016

Emissions of biological contaminants (microbes) from intensive pig farming may cause environmental problems due to lack of proper waste management. This work was conducted to assess bacteriological pollution of soil in pig farm and to detect the presence of antibiotic resistance gene of the prevailing bacteria. Soil samples were collected from March to August 2013. The method included bacterial enumeration (10 -1 to 10...

Author(s): Dikonketso Shirley-may Matjuda and Olayinka Ayobami Aiyegoro

Assessment of the microbial quality of some oral liquid herbal medicines marketed in Ile-Ife, South-western Nigeria

October 2016

The extensive use of herbal medicinal products in the treatment and management of disease states within communities in Ile-Ife, south western Nigeria has made it imperative to investigate the microbial quality of a sample of these products in the light of the standards prescribed by regulatory bodies. This study was therefore carried out to assess the microbial quality of locally prepared and unregistered herbal oral...

Author(s): Oluwatoyin Abimbola Igbeneghu and Adebayo Lamikanra

Modification of pathogenic microbiota and histology of gastrointestinal tract of Archachatina marginata (Swainson, 1821) by Carica papaya seed meal

October 2016

This study investigated the bactericidal efficacy of the ethanolic extract of Carica papaya seed on snail gastrointestinal tract (GIT) microbiota and associated histological changes. The bacterial isolates were characterized based on colony morphology, culture characteristics and biochemical tests. Each portion of the gut was further subjected to histological examination to ascertain the effect of this extract on the...

Author(s): Odo G. E, Ekeh F. N, Ekechukwu, N. E, Agwu, E. J, Aguzie I. O. E. and Ugwuezumba B.

Impact of land use and soil types on arbuscular mycorrhizal fungal diversity in tropical soil of India

October 2016

A study was undertaken along land use gradients with different soil types in subtropical ecosystem of Northern India to evaluate the accurance of arbuscular mycorrhizal fungi (AMF). The gradients was from natural land with forest tree, farmer’s field under chemically managed, farmer’s field under organically managed and Industrial wasteland with five different plant species. We investigate the total AMF...

Author(s): Sanjeev  Kumar and Alok Adholeya

Development and evaluation of sundae-type “Coalhada” containing Lactobacillus paracasei and blueberry (Vaccinium ashei) preparation

October 2016

“Coalhada” is a type of fermented milk (made with Lactococcus lactis spp. lactis and Lactococcus lactis spp. cremoris) very popular in Brazil, which is widely consumed due to its pleasant texture and mild taste and aroma. Its acceptance is possible to increase by adding a fruit preparation. Fermented milk is the most common food matrix used for delivery probiotic bacteria, which are able to survive to the...

Author(s): Maria Eduarda Daussen Dutra, Daiane Aparecida Paggi, Luiza Martins Reguse, Ana Carolina Sampaio Doria Chaves and Deise Helena Baggio Ribeiro

Prevalence and antimicrobial susceptibility profile of Salmonella species from ready-to-eat foods from catering establishments in Jigjiga City, Ethiopia

October 2016

Food-borne pathogens are the leading cause of morbidity and mortality in developing countries. Changes in eating habits, mass catering, unsafe food storage conditions and poor hygiene practices are major contributing factors to food associated illnesses. In Ethiopia, the widespread habit of ready-to-eat food consumption is potential cause of food borne illnesses. The present study aimed at investigating the prevalence...

Author(s): Tesfaye Wolde, Melese Abate, Henok Sileshi and Yohannis Mekonnen

Production and characteristics of bioflocculant TPT-1 from a consortium of Bacillus pumilus JX860616 and Alcaligenes faecalis HCB2

October 2016

The combination of microorganisms in consortia enhances high bioflocculant yields. The study aimed at producing and characterising bioflocculant from Bacillus pumilus JX860616 and Alcaligenes faecalis HCB2. Bioflocculant TPT-1 was obtained through ethanol extraction after optimum conditions were established. The characteristics of the bioflocculant TPT-1 were obtained by scanning electron microscope equipped with...

Author(s): Tsolanku Sidney Maliehe, Nelson Tlou Selepe, Golden Ntombela,  Jean Simonis, Albertus Kotze Basson, Siyanda Ngema, Petunia Samukelisiwe Xaba and Fanelesibonge Mpanza

Occurrence and susceptibility patterns of Campylobacter isolated from environmental water sources

October 2016

Environmental waters are established sources of Campylobacter infections in humans. The aim of this study was to assess the distribution and susceptibility profiles of Campylobacter species isolated from irrigation and domestic water sources in Ghana. Samples were pre-enriched with CCDA broth and isolated on mCCDA agar. Isolates were confirmed on API CAMPY kit and with the Kirby-Bauer disk diffusion method to determine...

Author(s): Akosua B. Karikari, Kwasi Obiri-Danso, Enoch H. Frimpong and Karen A. Krogfelt

Fungi toxic efficiency of some plant volatile essential oils against plant pathogenic fungi

October 2016

Plant essential oils have the potential to replace the synthetic fungicides in the management of different fungal diseases. Four different essential oils of eucalyptus (Eucalyptus globulus), citronella (Cymbopogon citrate), karanj (Pongamia pinnata) and neem (Azadirachta indica) were selected because of their high inhibitory activities against ten phytopathogenic fungi. The antifungal screening for all the four Eos...

Author(s): Shaon Kumar Das, Aniruddha Roy and Harikamal Barman

Bacteria associated with sugarcane in Northeastern Brazil

October 2016

Sugarcane has a high demand in nitrogen, increasing costs and causing damages to the environment. It is necessary to find alternatives to reduce nitrogen fertilizers use. Diazotrophic bacteria have capacity to promote growth in grass with potential to fix N2 and solubilize inorganic phosphate. This study aimed to evaluate bacterial community associated with different sugarcane varieties in Northeastern Brazil, select...

Author(s): Michelangelo de Oliveira Silva, Fernando José Freire, Júlia Kuklinsky-Sobral, Emídio Cantídio Almeida de Oliveira, Maria Betânia Galvão dos Santos Freire and Valéria Xavier de Oliveira Apolinário

Screening endophytic actinobacteria with potential antifungal activity against Bipolaris sorokiniana and growth promotion of wheat seedlings

September 2016

Actinobacteria secrete substances that limit or inhibit the growth of plant pathogenic fungi and may be used in the biocontrol of these microorganisms. The aim of this study was to characterize physiological and enzymatic activity of endophytic actinobacteria, evaluate their antifungal activity against Bipolaris sorokiniana root colonization, and evaluate their efficiency in promoting the growth of wheat seedlings....

Author(s): Elisandra Minotto, Luciana Pasqualini Milagre, Cristina Spadari, Thaisa Feltrin, Ana Elisa Ballarini, José Carlos Germani, Sabrina Pinto Salamoni and Sueli Teresinha Van Der Sand

Effect of temperature, pH and substrate composition on production of lipopeptides by Bacillus amyloliquefaciens 629

September 2016

The lipopeptides surfactin, fengycin and iturin produced by Bacillus species have diverse ecological roles, including antimicrobial activity, induced systemic resistance in plants against pathogens and plant colonization by the producing strain. The conditions that govern both lipopeptide production and plant colonization are not fully understood. The present study investigated the role of growth media, temperature and...

Author(s): Fernando Pereira Monteiro, Flávio Henrique Vasconcelos de Medeiros, Marc Ongena, Laurent Franzil, Paulo Estevão de Souza and Jorge Teodoro de Souza

Isolation, screening and statistical optimizing of L-methioninase production by Chaetomium globosum

September 2016

Egyptian soil sample was screened for isolation methioninlytic fungi by a rapid plate assay procedure. Eighteen strains of different isolated fungi were screened quantitavely for their L-methioninase activity. Chaetomium globosum was the most efficacious isolate and a dematiaceous filamentous fungi, it was identified at the molecular level by ribotyping 18S rRNA along with the biochemical characterization, and...

Author(s): Shimaa R. Hamed, Mostafa M. Abo Elsoud, Manal G. Mahmoud, Mohsen M. S. Asker

Isolation and identification of potential probiotic bacteria on surfaces of Oreochromis niloticus and Clarias gariepinus from around Kampala, Uganda

September 2016

Increased fish mortality due to infections has forced most farmers to resort the use of chemotherapeutic agents especially antibiotics. The continued use of these drugs in aquaculture is becoming limited as pathogens develop resistance and infer unpredicted long term public health effects. More research efforts are building to identify alternative disease prevention methods, among which the use of probiotics has been...

Author(s): Charles Drago Kato, , Ruth Kabarozi, Samuel Majalija, Andrew Tamale, Nathan Lubowa Musisi and Asuman Sengooba

Rapid microbiological tests for prospecting new fungal strains with high potentiality for the pectinolytic enzymes production

September 2016

Prospecting of new isolates producers of pectinolitic enzymes were performed with cultivation of substrates of rice, soybean and corn bran. Pectinolitic enzymes were observed in cultures of the isolates NFC 1, NFC 2, NFC 4, NFC 5 and NFC 6 identified as belonging to the genus Aspergillus sp. Isolates NFR 1, NFR 2 and NFS1 were identified as belonging to the genus Rhizopus and NFC 3 belonging to the genus Cladosporium;...

Author(s): Cangussu, A. S. R., Felix, M. K. C., Araujo, S. C., Viana, K. F., Aguiar, R. W. S., Ribeiro, B. M., Portella, A. C. F., Barbosa, L. C. B., Brandi, I. V. and Cangussu, E. W. S.

Halophile isolation to produce halophilic protease, protease production and testing crude protease as a detergent ingredient

September 2016

Halophilic enzymes are potentially useful in many industries, particularly in food fermentation, pharmaceutical, textile, and leather for the treatment of saline and hypersaline wastewaters. In this study, a halophilic bacterium was isolated from saltpan environment, and was identified as Bacillus sp. Mk22 through biochemical test and 16S rRNA gene sequencing. During protease screening, the isolates produced 24 mm clear...

Author(s): Ashokkumar Sekar, Mayavu Packyam and Keun Kim

Microbial community structure and chemical composition from dark earth in a native archaeological site of the lower Amazon

September 2016

The microbial community structure from dark earth in a native archaeological site of the Lower Amazon was analyzed by PCR-DGGE, using 16S rRNA gene for prokaryote population and 18S rDNA and ITS regions (using clamp GC) for the eukaryote population. The bands were excised from gel and re-amplified for sequencing. The diversity found according to the region of amplification showed same profiles for the two primers pairs....

Author(s): Maxwel Adriano Abegg, Karina Teixeira Magalhães-Guedes,  Andréia Oliveira Santos and Rosane Freitas Schwan

Prevalence and antibiotic susceptibility of Staphylococcus aureus from lactating cow’s milk in Bahir Dar dairy farms

September 2016

Staphylococcus aureus is competitive in milk and dairy environments; pathogenic strains have been found to cause disease in their host throughout the world. Therefore, this study was designed to assess the prevalence of Staphylococcus aureus and determine their antibiotic susceptibility from lactating cow milk. A cross-sectional study was conducted in Bahir Dar dairy farms from October 2012 to March 2013. A total of 218...

Author(s): Sileshi Shiferaw and Munees Ahmad

Clinico-mycological profiles of dermatophytosis in Jaipur, India

September 2016

Dermatophytosis poses a serious crisis to the socio-economically backward population. The infections are caused by three anamorphic genera; Epidermophyton, Trichophyton and Microsporum which are distributed around the world. The objective of this study was to find out the occurrence, distribution and prevalence of dermatophytes causing human dermatomycosis in various categories of patients in Jaipur (Rajasthan), India....

Author(s): Sachin Kumar and Seema Bhadauria

Some parasitic copepods of selected Teleost and Chondrichthyan fishes from the Tunisian gulfs

September 2016

The examination of 415 specimen belonging to twelve species of Teleostean fish and 339 specimen belonging to seven species of Chondrichthyan fish collected from the Tunisian coasts, it enabled us to identify 10 species of parasitic copepods: Lernaeopoda galei, Lernaeocera lusci, Neobrachiella merluccii, Hatschekia mulli, Caligus elongatus, Caligus pageti, Neobrachiella mugilis, Clavellotis fallax, Clavelissa pagri and...

Author(s): Feriel Youssef, Bouchra Benmansour, Oum Kalthoum Ben Hassine and Sabiha Zouari Tlig

Molecular genotypes of Mycobacterium tuberculosis strains circulating in Dakar, Senegal

September 2016

Tuberculosis is a contagious infectious disease, in which epidemiologic monitoring by molecular approaches is a critical element of prevention and control. The population structure of the Mycobacterium tuberculosis complex (MTBc) in Senegal was last described in the 1970’s using biochemical methods. In this present study, we applied molecular approaches to genotype M. tuberculosis isolates from active pulmonary...

Author(s): Awa Ba Diallo, Ossaga Gedeon Walbang, Makhtar Camara, Seynabou Lo,  Abigail Ayorinde, Aliou Niang, Souleymane Mboup, Aissatou Gaye Diallo, Bouke Catherine de Jong, and Florian Gehre,

Histamine and microbiological changes during storage of semi-preserved anchovies

September 2016

During the various stages of manufacture of semi-preserved anchovies, histamine shows a significant increase favored by the fragility of anchovies and wealth histidine, an amino acid precursor of histamine. The decarboxylation of histidine is present as a major problem in the industry of semi-preserved anchovies, especially during the ripening step. The objective of this work is to monitor the levels of alteration in a...

Author(s): El Filali F., Hanoune S., Moukrim A., Kaaya A. and Bou’mhandi N.

Performance of dried blood spot (DBS) PUNCHER and dried blood spots to measure HIV-1 viral load

September 2016

The use of plasma is an obstacle to realize HIV-1 viral load in sub-Saharan Africa. In this context, the dried blood spot (DBS) is an interesting tool for sample collections. This approach was tested using a DBS hole-punch device (PUNCHER). Plasma and DBS samples were obtained from 102 patients, comprising 17 HIV-1 negative patients and 85 HIV-1 infected patients. The PUNCHER’s performance used to cut DBS was...

Author(s): Anoumou Dagnra, Mounerou Salou, Amivi Ehlan, Ahouefa Konou, Alassane Ouro-Medeli, Sika Dossim and Komlan Ali-Edje

Prevalence and molecular typing of extended-spectrum β-lactamases in Escherichia coli, Enterobacter cloacae and Citrobacter freundii isolates from Laghouat Hospital, Algeria

September 2016

The antibiotic resistance of enterobacteriacae knows a worldwide worrying evolution with an increase of the extended-spectrum β-lactamases. The present study was to determine the prevalence and molecular typing of extended-spectrum β-lactamases (ESBLs) in clinical isolates of Escherichia coli, Enterobacter cloacae, and Citrobacter freundii, isolated between January 2010 and December 2012, at the Laghouat...

Author(s): Nouria Lagha, Hafida Hassaine, Fréderic Robin, Richard Bonnet and Djamel-Eddine Abdelouahid

An in vitro evaluation of Cinnamon (Cinnamomum spp.) and Siwak (Salvadora persica) extracts for controlling the foulbrood pathogens of honeybee

September 2016

Instead of the synthetic antibiotics, the antibacterial activity of the aqueous and ethanolic extracts of both Cinnamon (Cinnamomum spp.) and Siwak (Salvadora persica) plants was evaluated against the foulbrood bacteria under the laboratory conditions. To the study knowledge, it is the first time to evaluate Siwak plant against the foulbrood diseases. The major antimicrobial constituents (total phenolics, flavonoids and...

Author(s): Hashish, Mohamed Elsayied, Khattaby, Ahmed Mahmoud, Khattab, Metwally Mostafa, Gaaboub, Ibrahim Abdallah and Omar, Reda Elsayied

Comparison of the prevalence of antibiotic-resistant Escherichia coli isolates from commercial-layer and free-range chickens in Arusha district, Tanzania

September 2016

The antibiotic susceptibility of fecal Escherichia coli isolates from commercial-layer and free-range chickens in Arusha district, Tanzania were compared. All the chickens were raised by individual households, but commercial-layer chickens were purchased from commercial vendors, whereas no systematic breeding system was used to produce free-range chickens. A total of 1,800 E. coli isolates (1,200 from commercial-layer...

Author(s): Bernadether T. Rugumisa, Douglas R. Call, Gaspary O. Mwanyika, Murugan Subbiah and Joram Buza

Increasing trend of methicillin-resistant Staphylococcus aureus in Jaipur, Rajasthan, India

September 2016

Multidrug resistant strains of Staphylococcus aureus have become a serious threat to hospitalized patients and health workers. Recently, this bacterium has emerged as methicillin-resistant S. aureus (MRSA) and this bacterial strain has turned into a superbug in the health domain. The main objective of the present study was to find out the prevalence of MRSA in different clinical samples. A total number of 155 clinical...

Author(s): Sachin Kumar and Seema Bhadauria

Evaluation of antibacterial activity of some non-steroidal anti-inflammatory drugs against Escherichia coli causing urinary tract infection

September 2016

Extensive use of antibiotics for urinary tract infections has led to the emergence of drug-resistant microorganisms and one solution to this problem is to search for non-antibiotic compounds that exert anti-bacterial activity through different mechanisms such as non-steroidal anti-inflammatory drugs (NSAIDs). In this study, out of 100 urine samples; 48 Escherichia coli strains were detected, 47.9% were multi-drug...

Author(s): Eman Farouk Ahmed, Rehab Mahmoud Abd El-Baky, Abo Bakr F Ahmed, Nancy Gameel fawzy, Neveen Abdel Aziz and Gamal Fadl Mahmoud Gad

Evaluation of a real-time PCR assay for the detection of the Klebsiella pneumoniae carbapenemase gene (blaKPC) in enterobacteriaceae isolates from clinical samples in Menoufia University hospitals, Egypt

September 2016

The aim of our work is to study and evaluate a rapid method for detection of Klebsiella pneumonia carbapenemases genes (blaKPC) in enterobacteriaceae isolates from clinical samples by using real time PCR and comparison of this method with ordinary phenotypic methods. Outbreaks of carbapenem‐resistant enterobacteriaceae (CRE), primarily K. pneumoniae, have been reported recently in several regions worldwide. The...

Author(s): Amira Abdelkader Al Hindi and Abeer Hamdy El Shalakany

Genetic diversity analysis of rep-PCR genomic fingerprinting of Lysobacter spp.

September 2016

Lysobacter. spp. are considered as important biocontrol bacteria, due to their antagonistic activity against many pathogenic fungi, bacteria and nematodes. Rep-PCR was used to analyze the genetic diversity of 12 Lysobacter strains. These strains included Lysobacter antibioticus (HY, 13-1, 13-6, 6-B-1, 13-B-1, 6-T'-4, LJ6-3, LJ6-4 and LR9-3), Lysobacter enzymogenes (DH3, 1-T-1-4) and Lysobacter capsici (LG18) isolate...

Author(s): FU Li-Na, ZHANG Hai-Yan, ZHANG Xiao-Fang, WEI Lan-Fang, ZHANG Jin-Hao and JI Guang-Hai

Characterization of antifungal Paenibacillus illinoisensis strain UKCH21 and its chitinolytic properties

September 2016

 Paenibacillus strain, UKCH21, isolated from Uttarakhand State, north western Indian Himalayas was found to produce high levels of extracellular chitinases. The 16s rRNA gene sequence showed 100% homology with P. illinoisensis (Accession No. KR856190) available in the public domain and further phylogenetic study also verified the species identity. The culture supernatants have a maximum chitinase activity of 110.8...

Author(s): Subbanna A. R. N. S., Khan M. S. and Shivashankara H.

Importance of biofilm in medical sciences: With special reference to uropathogens

September 2016

Biofilm formation is a well organised, genetically-driven process, well characterized for numerous bacterial species which plays important role in urinary tract infections (UTIs). Adherence is a key event initiating each step in UTI pathogenesis. Such UTIs are difficult to treat owing to increased drug resistance within the biofilm cells. The review is mainly focused on biofilm-growing microorganisms because this form...

Author(s): Ghanwate Niraj A., Tiwari Anjali A. and Thakare P. V.

Removal of Escherichia coli in treated wastewater used for food production in Morogoro, Tanzania

September 2016

The aim of this study was to assess the removal efficiency of Escherichia coli at Mafisa and Mzumbe domestic wastewater treatment ponds in Morogoro, Tanzania. The study was done from October, 2013 to April, 2014. A total of 125 water samples from inlets and subsequent anaerobic, facultative and maturation ponds as well as treated wastewater were collected and analysed for E. coli. The estimated retention times of the...

Author(s): Ofred J. Mhongole, Robinson H. Mdegela, Lughano J. M. Kusiluka, , Anita Forslund, and Anders Dalsgaard

Resistance genes to sulphonamide in commensal Escherichia coli isolated from stool of patients in Mansoura University Children Hospital

September 2016

Commensal bacteria have a great impact on the emergence and spread of antibiotic resistance. This emphasizes a great need to underscore the magnitude of this problem in our locality, and children are taken as a sector in this research because they are usually subjected to heavy load of antibiotic usage. This study aimed at determining sulphonamide resistance genes presence among fecal isolates of commensal Escherichia...

Author(s): Samah Sabry El-Kazzaz, Ghada El-Saeed Mashaly, Amr Mohamed El-Sabbagh and Dina Salama Abd Elmagid

Drug-resistant bacteria in frozen and fresh marine shrimp

September 2016

This study aimed to evaluate the bacteriological quality of frozen and fresh shrimp samples by Salmonella detection and the quantification of staphylococci and coliforms. Antimicrobial susceptibility profile of staphylococci isolates was also determined. A total of 30 shrimp samples commercialized in Sobral-CE - 15 fresh and 15 frozen, each one weighing 500 g - was analyzed. There was no contamination by Salmonella...

Author(s): Antonia Jorgiane Rodigues de Macedo, Maria Alana Duarte Marinho, Sara Edwirgens Costa Benício Vasconcelos, and Renata Albuquerque Costa,

Antimicrobial activities of a multi-species probiotic ingredient derived from opaque sorghum beer during its propagation in a starchy career model

September 2016

This study evaluates the antimicrobial activities of a multi-species probiotic ingredient derived from the African opaque sorghum beer during its propagation in a starchy career model. The aim was to establish the optimum growth conditions that warrant the optimum antimicrobial activities in the product. The antimicrobial activities were tested against Gram-positive bacteria (Staphylococcus aureus ATCC 27844, S. aureus...

Author(s): I. B. Chabi, A. P. P. Kayodé, B. P. Agbobatinkpo, G. Vieira-Dalodé, A. Adénilé, L. Baba-Moussa and J. T. C. Codjia

Multidrug-resistant bacteria isolated from patients hospitalized in Intensive Care Unit in University Hospital of Constantine, Algeria (2011 - 2015)

September 2016

The incidence of infections caused by multidrug resistant bacteria is increasing worldwide. The frequent misuse of antibiotic drug has greatly contributed to worldwide dissemination of antibiotics resistance. Multi-drug resistance in Gram-negative and Gram-positive bacteria causes a wide range of infections, particularly in the Intensive Care Unit (ICU) settings leading to an increased impact on morbidity, mortality and...

Author(s): Abla Hecini-Hannachi, Chafia Bentchouala, Abdesselam Lezzar, Houcine Laouar, Kaddour Benlabed, and Farida Smati,

Occurrence of Vibrio parahaemolyticus in oysters (Crassostrea gigas) and mussels (Perna perna) of the seacoast of Santa Catarina, Brazil

September 2016

This research aimed to identify and quantify Vibrio parahaemolyticus in fresh oysters (Crassostrea gigas), mussels (Perna perna) and seawater from different regions of cultivation of bivalve shellfishes in the seacoast of Santa Catarina, Brazil. Samples were collected between October 2012 and December 2013 and 130 oysters samples (Crassostrea gigas), 215 mussels samples (Perna perna) and 222 seawater were collected. The...

Author(s): Helen Silvestre da Silva, Karin de Medeiros, Marília Miotto, Clarissa Barreta and Cleide Rosana Werneck Vieira

Gut bacterial microbiota in psoriasis: A case control study

September 2016

Gut microbiota is mainly composed of four phyla; however, the human gut microbiota is dominated by only 2 of them and most of them are uncultivable. Psoriasis is an inflammatory skin disorder with associated inflammation of internal organs and musculoskeletal system. This study aimed to, identify numerically abundant bacteria phyla in fecal samples of patients with psoriasis, evaluate whether differences in fecal...

Author(s): Doaa Masallat, Dalia Moemen and Ahmed F. State

Microbial species of safety concern in milk from informal processors in Harare, Zimbabwe

August 2016

In this study, the bacteriological quality and the presence of Staphylococcus aureus, Escherichia coli O157:H7, Bacillus cereus, Salmonella species, and Pseudomonas species were studied in raw milk, cultured milk, milk handlers and packaging containers. A total of 36 samples were collected over 3 months from three different farmers. Samples were analyzed for means of counts per milliliter of milk for total bacterial...

Author(s): Siyangapi Chimuti, Nicholas Midzi, Patrick Kamau Njage and Desmond Tichaona Mugadza

Fusarium spp. and fumonisin in feed for equine and its importance for occurrence of leukoencephalomalacia

August 2016

In the animal feed industry, an ever growing increase in quality has been observed, but the main feature of a food is related to its security because the contamination poses a risk to animal health. The problems caused by fungal colonization is the significant loss of food quality, because even those who do not produce mycotoxins cause losses in the nutritional quality. Researches show that the most important Fumonisins...

Author(s): Rafael Gomes Abreu Bacelar, Francisco das Chagas Cardoso Filho, Juliana de Abreu Costa, Amilton Paulo Raposo Costa,  Maria Marlúcia Gomes Pereira Nóbrega and Maria Christina Sanches Muratori

Evaluation of a non-submerged cultivation assay combined to ESEM imaging for analysis of biofilms formed by dairy-associated sporeforming bacteria

August 2016

In the dairy industry, the biofilms formed by spore forming bacteria are not well characterized. Microscopic methods are crucial for the study of biofilm structural and architectural features. Here, a simple surface-associated non-submerged model combined to environmental scanning electron microscope (ESEM) imaging was used for the study of Bacillus cereus and Geobacillus spp. dairy biofilms. To evaluate the utility of...

Author(s): Fadila Malek

Cytokinins production by fluorescent Pseudomonas isolated from rhizospheric soils of Malus and Pyrus

August 2016

Information on microbial production of cytokinins and their effect on plant growth are limited. Therefore, the objective of the present study was to investigate cytokinins production by Pseudomonas sp., a major component of rhizobacteria with multiform and diverse activities, which enhance plant growth by synthesizing various secondary metabolites. In the present investigations, thirty Pseudomonas isolates were isolated...

Author(s): Ritika Kapoor and Mohinder Kaur

Nosocomial infection caused by multidrug resistant Enterobacteriaceae and their spread in inanimate surfaces in East-Algerian hospitals

August 2016

The inanimate hospital environment may serve as a reservoir for resistant bacteria that pose nosocomial infection risks often originating from cross contamination and the most common means of pathogens transference occurs between hands of health professionals, hospital equipment and patients. The aim of this study was to investigate various nosocomial infections with multidrug resistant Enterobacteriaceae (MDR-E) and...

Author(s): Widad Bouguenoun, Ahmed Aimen Bentorki, Imane Bouguenoun and Tarek Merad

Antibacterial susceptibility spectrum of some gram negative bacteria from suspected Otitis media patients

August 2016

Otitis media (OM) is a multifactorial disease characterized by high rate of recurrence in young children and considered to cause hearing impairment in children. This study was undertaken to evaluate the antibacterial sensitivity of Gram-negative bacteria of OM to some antibiotics. A total of Fifty four (54) samples were obtained from patients with suspected cases of otitis media coming into the National Ear Care Centre...

Author(s): Maiangwa Jonathan, Abdullahi Mustapha, Ibrahim Musa Moi, Garba Lawal and Orukotan Abimbola

Recovery and prevalence of antibiotic-resistant Salmonella from fresh goat meat in Arusha, Tanzania

August 2016

Meat products are clearly associated with foodborne pathogens including, antibiotic-resistant strains.  Population growth and growing consumer demand facilitate the transmission of foodborne pathogens, particularly in developing countries. To determine the prevalence of antibiotic-resistant Salmonella in goat meat, a study was done in Tanzania (June to July, 2015). Overall 120 goat meat samples were collected from...

Author(s): Gaspary O. Mwanyika, Joram Buza , Benardether T. Rugumisa, Catherine Luanda, Rehema Murutu, Beatus lyimo, Murugan Subbiah and Douglas R. Call,

Cloning and characterization of an endo-β-1,4-xylanase gene from Colletotrichum lindemuthianum and phylogenetic analysis of similar genes from phytopathogenic fungus

August 2016

Colletotrichum lindemuthianum is the etiological agent of anthracnose, one of the main diseases of bean (Phaseolus vulgaris). In this study, the complete cDNAs of two endo-β-1,4-xylanase genes (xyl1) from non-pathogenic (0) and pathogenic (1472) races of C. lindemuthianum were isolated and characterized. To get an insight into the role of endo-β-1,4-xylanases in their different lifestyles, xyl1 gene expression...

Author(s): Ulises Conejo-Saucedo, Horacio Cano-Camacho, Everardo López-Romero, Maria G. Villa Rivera, Alicia Lara-Márquez and  María G. Zavala-Páramo

Effects of temperature and incubation time on growth and ochratoxin A biosynthesis by Aspergillus carbonarius and Aspergillus ochraceus in grain-based media

August 2016

Ochratoxin A (OTA) has been frequently found as a food contaminant, and it is considered one of the mycotoxins most harmful to human health. In this context, this study was performed aiming to evaluate mycelial growth and ochratoxin A production from three isolates of Aspergillus carbonarius and Aspergillus ochraceus. The isolates were inoculated on culture media coffee, wheat and maize as well as YES medium and...

Author(s): Sirlei Cristina de Souza, Vanessa Maria Pereira, Fabiana Reinis Franca Passamani, Marcelo Angelo Cirillo, Rodrigo Luz da Cunha, Maria das Graças Cardoso, Wilder Douglas Santiago, Sara Maria Chalfoun de Souza and Luís Roberto Batista

Bioprospecting and plant growth-promoting bacteria tolerant to salinity associated with Atriplex nummularia L. in saline soils

August 2016

This study aimed to bioprospect and select halotolerantes bacteria and promoting plant growth associated with the plant Atriplex nummularia L. in saline soils. For bioprospecting of bacteria, samples were collected in five niches and two field experiments located in Serra Talhada and Ibimirim, Pernambuco, Brazil. After collecting the material it was performed the isolation and selection of bacteria based on plant growth...

Author(s): Flaviana Gonçalves da Silva, Isaneli Batista dos Santos, Adjailton José de Sousa, Andreza Raquel Barbosa Farias, Williane Patrícia da Silva Diniz, Júlia Kuklilinsky Sobral and Maria Betânia Galvão dos Santos Freire

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