African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5211

AJMR Articles

Effects of acidification on the extension of shelf life of Japanese wet-type noodles (woo-long noodle)

December 2016

Noodles are one of the most important foods worldwide; various methods have been reported to extend their shelf life. In this study, the effects of dipping noodles in various concentrations of acidulant solutions (organic acids) on the shelf life of the noodles were evaluated. The results showed that the growth of the tested microorganisms, that is, Escherichia coli, Staphylococcus aureus and Bacillus cereus, was...

Author(s): Hsueh-Liang Lin#, Der-Sheng Chen#, Chin-Hung Tsai and Shie-Jea Lin

Optimization of parameters to increase the xylose reductase production from Candida tropicalis strain LY15 using corn cob as hemicellulose waste substrates

December 2016

Xylose reductase (XR) is a key enzyme in order to obtain xylitol from xylose. It has vast applications in biotechnology including xylitol production. The present study aimed to estimate and characterize XR from Candida tropicalis strain LY15. C. tropicalis strain LY15 showed xylose utilization ability and xylose reductase activity after 48 h of incubation at pH 6.5, incubation temperature 28°C and rotation speed 140...

Author(s): Kaliyan Barathikannan, Ameer Khusro and Agastian Paul

Rhizobia isolation and selection for serradella (Ornithopus micranthus) in Southern Brazil

December 2016

ability to associate symbiotically with rhizobia. The objective of this study was to isolate, authenticate and select effective rhizobia obtained from native serradella (Ornithopus micranthus) to reduce the need for mineral fertilizer. Nodules, roots of serradella and rhizosphere soil samples were collected in seven municipalities from Rio Grande do Sul and Santa Catarina states. Bacterial colonies were isolated and...

Author(s): Rafael Goulart Machado, Enilson Luiz Saccol De Sá, Suélen Oldra, Murilo Dalla Costa, Gilberto Dall´Agnol, Neemias Da Silva Santos and William Rosa Da Silva

Escherichia coli O157, Staphylococcus aureus and coliforms in crude and processed bovine milk marketed

December 2016

Fifty-five (55) samples from five municipalities in the Recôncavo from Bahia region were analyzed between May and July 2015 to evaluate the sanitary quality and the presence of pathogens of crude and processed bovine milk samples. Psichrotrophic, mesophilic and thermophile rates and the count of Escherichia coli, E. coli O157: H7 Staphylococcus aureus and Listeria monocytogenes were done by microbiological methods...

Author(s): Santos M. L., Barros L. S. S., Silva I. M. M., Andrade M. V. and Lima D. V.

Molecular characterization of local strains of Bacillus thuringiensis in the North of Algeria

December 2016

The analysis of soil samples taken from orange groves located in four cities of Northern Algeria allowed the isolation and identification of 24 strains belonging to the group Bacillus cereus, based on their physiological, biochemical and molecular characters investigated. They were divided as follow: 12 strains of Bacillus thuringiensis, 1 strain of Bacillus pumilis, 4 strains of Bacillus cereus, 5 strains of Bacillus...

Author(s): Kebdani M., Mahdjoubi M., Cherif A., Gaouar B. N. and Rebiahi S. A.

Bacteriocins of Gram-positive bacteria: Features and biotherapeutic approach

December 2016

Bacteriocins are potent antimicrobial peptides produced by every bacterial and archeal species reported to date. The most studied are bacteriocins produced by lactic acid bacteria (LAB) and many species of Bacillus. Knowledge on the classification, biosynthesis and transport of these peptides is changing continually because the discovery and characterization of new bacteriocins increases, thus, the research reports...

Author(s): David Francisco Lafuente-Rincón, Tania Elizabeth Velásquez Chávez and  Norma M. De la Fuente-Salcido

Eugenol and linalool: Comparison of their antibacterial and antifungal activities

November 2016

Antimicrobial resistance is one of the greatest threats to human health. Alternatives to antimicrobials are needed to combat the rise of bacterial resistance. Essential oils (EOs) and their components are potential sources of new antimicrobials. The present study was conducted to evaluate the antibacterial and antifungal activities of two components of EOs. The antimicrobial mechanisms of eugenol and linalool were...

Author(s): Rehab Mahmoud Abd El-Baky and Zeinab Shawky Hashem

Induction of defense mechanisms from filtrates of saprophytic fungi against early blight disease in tomato

November 2016

The induction of defense enzymes presents efficient plant disease management when triggered by metabolic products of microorganisms. The aim of the present study is to select filtered saprobes fungi used for the management of early blight of tomato by inducing pathogenesis related to tomato plant. Filtrates of the fungi Curvularia eragrostidis, Curvularia inaequalis, Memnoniella echinata and Pseudobotrytis terrestris...

Author(s): Antônio Jussiê da Silva Solino, Kátia Regina Freitas Schwan-Estrada, Juliana Santos Batista Oliveira, Marianna dos Santos Rodrigues Alencar and Lilianne Martins Ribeiro

Survey of Cryptococcus neoformansin pigeon (Columba livia) excreta in Public Square in Umuarama, Paraná, Brazil

November 2016

Cryptococcosis is a common opportunistic fungal infection caused by encapsulated yeast of the Cryptococcus genus, mainly by the Cryptococcus neoformans and Cryptococcus gattii species. The fungus is acquired through the inhalation of environmental propagules or, more rarely, through organ transplants in immune-compromised individuals. Domestic pigeons (Columba livia) are related to the infection, mainly as natural...

Author(s): Gilneia Rosa, Luiz sérgio Merlini, Wellington Henrique Bessi, Arianne Peruzo Pires Gonçalves, Lorena Zacharias Silva, Pamela Roberta Perussi, Paulo Henrique Sposito and Pinto Neto Adalgiza

Identification and tracking of microorganisms from the biofilms of container walls used for water storage: Case of rural communities in Burkina Faso

November 2016

Safe drinking water is an important necessity for humans. In rural communities of Burkina Faso, many households use local containers for storing drinking water. During water storage, some microorganisms get attached to the surface walls of the containers to form a biofilm which can deteriorate drinking water quality over time. This study aimed at evaluating the attachment of indicator microorganisms to containers walls...

Author(s): Seyram K. Sossou, Franck Lalanne, Mariam Dakoure/Sou and Naoyuki Funamizu

Selection of anti-wetting agents and photoprotectants compatible with a soybean weed control bioagent

November 2016

Adjuvants incorporation at formulations can positively influence the performance of bioagent control, contributing to preservation of the inoculum until being used. Adjuvants should not be toxic to pathogen and tests that evaluate the sensitivity of biologic products are essential. The aim of this study was to analyze the compatibility of the anti-wetting agents microcrystalline cellulose, anhydrous sodium carbonate,...

Author(s): Machado, A. C. R., Monteiro, A. C. and Mochi, D. A.

Storage behaviour and functionality of a heat stabilized starter derived from an African opaque sorghum beer

November 2016

Tchoukoutou is a traditional sorghum opaque beer produced and consumed in Benin. It is obtained from an uncontrolled fermentation of sorghum wort using a traditional starter called “kpete-kpete”. The present study assessed the effects of storage duration on the physicochemical and microbiological characteristics as well as on the functional properties of the heat stabilized starter produced from...

Author(s): Djegui K. Y., A P. P. Kayodé and J. D. Hounhouigan

Characterization of arbuscular mycorrhizal fungi in apple (Malus domestica Borkh) growing area in Kashmir Himalaya (India): A case study of Bandipora district

November 2016

Rhizosphere soil samples and root pieces of 3 year old apple trees (var. Red delicious) were collected from 10 villages of district Bandipora of Kashmir Himalaya. Samples were processed for isolation of arbuscular mycorrhizal spores and their identification. On the basis of various morphological characters such as spore shape, colour, size, hyphal colour and with the help of International Collection of...

Author(s): Misbah A. Malik, Zargar M. Y. and Baba Z. A.

Effectiveness assessment of mouthwashes formulated from the essential oils of some beninese medicinal plants against oral germs

November 2016

Faced with the increasing growth of microorganism’s resistance to conventional antibiotics, the search of new bioactive molecules having pharmaceutical interest is more than ever committed. This study aimed to evaluate in vitro the effectiveness of seven mouthwashes formulated from essential oils of Ocimum gratissimum, Ocimum basilicum, Cymbopogon citratus, Clausena anisata, Lippia multifora, Eugenia caryophyllata...

Author(s): Jacob Bonou, Farid Baba-Moussa, Pacôme Agossou Noumavo, Adonice Zannou, Diane Aloukoutou, Lisette Kpavode, Hélène Ahouandjinou, Joachim Djimon Gbénou, Fatiou Toukourou and Lamine Baba-Moussa

Partial characterization of bacteriocin-like substance produced by probiotic Lactobacillus plantarum F12 isolated from Algerian children faeces

November 2016

The strain, Lactobacillus plantarum F12 with probiotic traits was isolated from Algerian healthy children faeces and identified by 16S rDNA sequencing. In this study, the antimicrobial activity and physicochemical properties of bacteriocin-like substance (BLS) produced by this strain were determined. Also, the bacteriocinogenic genes of plantaricin A, plantaricin J and plantaricin K were screened in this strain. The BLS...

Author(s): Fathia BAHRI and Noreddine KACEM CHAOUCHE

Analysis of high levels of multidrug resistant Escherichia coli from healthy broiler chickens in Western Algeria

November 2016

One hundred and two Escherichia coli strains isolated from healthy broiler chickens collected from April 2012 to November 2014 in seven geographic areas of western Algeria were studied. Susceptibility pattern to 11 antimicrobial agents was determined by disk diffusion method as recommended by the Clinical Laboratory Standard Institute (CLSI). Antibiograms revealed high levels of resistance to quinolones and...

Author(s): Benameur Qada, Ben-Mahdi Meriem-Hind, Boutaiba Benklaouz Meki, Tali-Maamar Hassiba, Assaous Farida, Guettou Badia and Rahal Kheira

Enteric fever caused by Salmonella enterica serovar paratyphi A: An emerging health concern in Nepal

November 2016

Enteric fever is an invasive life-threatening systemic disease caused by the Salmonella enterica human-adapted serovars typhi and paratyphi. Increased incidence of infection with S. enterica serovar paratyphi A poses a significant health concern in some areas of the world. In this study, the incidence of enteric fever confirmed by isolation of Salmonella paratypi A or S. typhi from blood cultures of patients presenting...

Author(s): Pramod Pokharel, Binod Lekhak, Ritu Amatya, Sharad Bhattarai and Prakash Pokharel

In vitro antimicrobial activity of three medicinal plants of Ethiopia against some selected bacterial isolates

November 2016

Medicinal plants constitute natural source of antimicrobial drugs that will provide essential compounds to fight against disease. In this study, the antibacterial activity of ethanol extracts of Moringa stenopetala, Thymus serrulatus, and Terminalia brownii were investigated against selected pathogenic Gram positive and Gram negative bacteria. In vitro antibacterial activities of the ethanol extracts were tested at a...

Author(s): Abraham Fikru Mechesso, Biruhtesfa Asrade, Harsiso Hailu and Alemayehu Toma

Extended spectrum-β-lactamase producing Escherichia coli and Klebsiella pneumoniae causing urinary tract infection

November 2016

Extended spectrum β-lactamase (ESBL) producing Escherichia coli and Klebsiella pneumoniae causing urinary tract infection (UTI) constitutes a significant therapeutic challenge.  The aim of this study was to investigate the frequency of ESBL producing Escherichia coli and Klebsiella pneumoniae isolated from urine samples. Clinical isolates of multidrug resistant Gram negative rods (n=102) were taken from urine...

Author(s): Alia Batool, Hania Baig, Muhammad Usman Qamar

Cyclic depsipeptide producing fluorescent pseudomonads exerts antifungal activity against fungal pathogens of maize (Zea mays)

November 2016

Cyclic lipopeptides (CLPs) with antibiotic, biosurfactant producing fluorescent pseudomonads were isolated from sugar beet-maize intercropped in sandy loam soils at Maize Research Station, Vagarai, TNAU. Approximately 20 fluorescent pseudomonads from sandy loam soils were isolated by using two different growth media. The strains were distinguished based on their growth, CFU/g, fluorescence, and pigment production....

Author(s): Radhajeyalakshmi Raju, Sethuraman Kandhasamy, Ganesan Kalipatty Nalliappan, Kumari Vinodhana Natarajan, Karthikeyan Gandhi and Bharathi Chandrasekaran

Production of fermented sweet potato flour using indigenous starter cultures

November 2016

The present study develop various microorganisms for starter culture purpose from fermented sweet potato and used the developed starters in the fermentation of sweet potato and products for consistent quality product with improved hygiene. Sweet potato was purchased from different markets and microorganisms were isolated and developed as starters. Comparative studies on different starters for the fermentation of sweet...

Author(s): Ajayi, O. I., Ehiwuogu-Onyibe, J., Oluwole, O. B., Jegede, A. A., Salami, T. A., Asieba, G. O., Chiedu, I. E., Suberu, Y. L., Aba, E. M., Dike, E. N., Ajuebor F. N. and Elemo, G. N.

Microbiological evaluation of drinking water available in schools in Cruz das Almas, Brazil

November 2016

The current study assessed the drinkability of water in 25 schools in Cruz das Almas BA Brazil. Total coliforms, Escherichia coli, Enterococcus, mesophylls and psichrotrophic bacteria were evaluated, coupled with color, turbidity, free residual chlorine, dissolved oxygen and biochemical oxygen demands. Water samples were collected at four sites: the first tap within the supply network or within the alternative supply...

Author(s): Marcos Vinicius Silva de Andrade, Ludmilla Santana Soares e Barros, Tatiana Pacheco Rodrigues, Monique Lima dos Santos and Danuza das Virgens Lima

Physiochemical evaluation and liability of dromedary camel’s milk in combating various pathogens

November 2016

Dromedary camel’s milk is a natural source of probiotics; enzymes and secondary metabolites that have the ability to combat many pathogens. The aim of this study was to compare the effectiveness of filtered and non-filtered dromedary camel’s milk activity against various pathogens. Filtered and non-filtered (raw and boiled) dromedary milk was assessed against different pathogens by using agar well diffusion...

Author(s): Maham Ghouri, Naheed Afshan, Sumaira Javed, Aziz Fatima, Ayman Sadat, Anam Chohan and Sayyeda Ghufrana Nadeem

Sensory, microbiological and physico-chemical characterization of Klila, a traditional cheese made in the south-west of Algeria

November 2016

Klila, an Algerian cheese produced in steppe and mountainous areas, is proving increasingly popular with consumers. It is traditionally made with ewe, goat or cow milk, leading to a product with high dry matter content (> 90%). In this work, we have characterized three different Klila cheeses made with the three different milks using physico-chemical and microbiological parameters. A triangle test was also...

Author(s): Benamara R. N., Gemelas L., Ibri K., Moussa-Boudjemaa B. and Demarigny Y.

Soil enzyme activities and soil microbe population as influenced by long-term fertilizer management during the barley growth in Hunan Province, China

October 2016

The effects of long-term fertilizer management on soil enzyme activities and soil microbe population under double-cropping paddy fields in southern China was studied. The purpose of this study was to explore the changes of soil enzyme activities and soil microbe population as related to mineral fertilizer and manure and rice residue based on a long-term field experiment. The experiment was initiated in 1986 and...

Author(s): Haiming Tang, Xiaoping Xiao, Jimin Sun , Lijun Guo, Ke Wang, Weiyan Li and Wenguang Tang

Effect of gamma irradiation (Co60) in the control of Campylobacter sp. in chilled chicken (Gallus gallus) heart

October 2016

The present study aimed to evaluate the efficiency of the irradiation process in the control of Campylobacter spp. in chilled chicken heart samples, since this microorganism is related to the contamination of meat and chicken giblets and is responsible for enteritis in humans. The methodology and standards recommended by RDC no. 12 (Brazil, 2001) were applied for the bacteriological analyses. The chilled chicken heart...

Author(s): Marta Maria Braga Baptista Soares Xavier, Robson Maia Franco, Ana Beatriz Monteiro Fonseca, Edgar Francisco Oliveira de Jesus, Mauro Carlos Lopes Souza, Sheila da Silva Duque, Wagner Thadeu Cardoso Esteves

Efficacy of biocontrol agents in the management of head rot of cabbage (Brassica oleracea var. capitata) caused by Sclerotinia sclerotiorum

October 2016

Head rot of cabbage caused by Sclerotinia sclerotiorum leads to rotting of fully matured cabbage heads in the field. In the present study the antagonistic effects of twenty Bacillus isolates was tested against S. sclerotiorum in vitro. Eight effective Bacillus isolates obtained from studies in vitro, commercial formulations of Trichoderma viride isolate TV-1 and Pseudomonas fluoroscens isolate Pf-1along with a fungicide...

Author(s): Kamesh Krishnamoorthy K., Sankaralingam A. and Nakkeeran S.

Microbiological and molecular characterization of environmental mycobacterium strains isolated from the Buruli ulcer endemic and non-endemic zones in Côte d’Ivoire

October 2016

Mycobacterium ulcerans (MU), the causative agent of Buruli ulcer (BU), skin disease, is considered to be an environmental pathogen. The pathogenic virulence of MU is being linked to the expression of toxin called Mycolactone. Genetic analyses have shown the high diversity with variable number tandem repeats (VNTR) and mycobacterial interspersed repetitive units (MIRU) in M. ulcerans and in mycolactone producing...

Author(s): Sabine N. Vakou, Julien Coulibaly-Kalpy, Solange E. Kakou-Ngazoa, N`guetta Aka, N`golo D. Coulibaly, Mireille Dosso  and Allico J. Djaman,

External ocular bacterial infections among Sudanese children at Khartoum State, Sudan

October 2016

Ocular infections are widespread and they exert heavy burden on eye health. Virtually, any eye component can be infected by a diversity of bacteria. The present study was performed to determine the prevalence of external ocular bacterial infections and to find out antibiotic susceptibility pattern of bacterial isolates at eye care hospitals in Khartoum, Sudan. Two hundred and four corneal scrape and drained pus...

Author(s): Mazin O. Mohager, Lemya A. Kaddam and Samah O. Mohager

Pneumonia in Algerian Ouled Djellal sheep: Bacteriological study and macroscopic aspect of lung lesions

October 2016

Respiratory diseases in sheep are a multifactorial etiology syndrome, causing great economic losses. This study was carried out with the aim of establishing a bacteriological diagnosis of respiratory diseases in sheep, on the basis of lungs with macroscopic lesions taken from sheep slaughtered at the Blida abattoir. A total of 150 samples (swabs and lung parenchyma) from 75 Ouled Djellal sheep, aged six to twelve months...

Author(s): Kamel Akloul and Mohammed Nabil Menoueri

Anti-biofilm activity of ibuprofen and diclofenac against some biofilm producing Escherichia coli and Klebsiella pneumoniae uropathogens

October 2016

Ibuprofen (IBU) and Diclofenac (DIC) are non-steroidal anti-inflammatory drug which have shown to have broad antimicrobial activity and limit biofilm formation. Aim of this study was to evaluate the effects of IBU and DIC against biofilm formation strong strains Escherichia coli and Klebsiella pneumoniae associated with urinary tract infections (UTIs). Additionally some virulence factors, antibiotic resistance, ESBL...

Author(s): Rosa Baldiris, Victor Teherán, Ricardo Vivas-Reyes, Alfredo Montes and Octavio Arzuza

Effects of immunoglobulin Y (IgY) serum against plaque bacteria

October 2016

Dental caries is an infectious disease caused by plaque bacteria, especially Streptoccus mutans. Many studies were conducted to develop methods or material for dental caries prevention. It was using passive immunization that will produce specific antibodies. Yolk immunoglobulin (IgY) is antibody in the serum and egg yolk. This study aimed to determine the effect of IgY serum against the growth of dental plaque bacterial...

Author(s): Juni Handajani, Dhinintya Hyta Narissi, Mufidana Azis and Aurita Siwi Rahmawati

Campylobacter in sheep, calves and broiler chickens in the central region of Algeria: Phenotypic and antimicrobial resistance profiles

October 2016

The study was conducted in four slaughterhouses in Bouira Province, central region of Algeria. Campylobacter in the main food animals (sheep, calves and broilers) were studied to evaluate the prevalence, phenotypic characteristics and antibiotic susceptibility of isolated strains. Out of 200 sheep, 200 calves and 100 broilers swab samples collected. 150 strains were isolated and identified. A study of sensitivity to 14...

Author(s): Meryem Guessoum, Zehor Guechi, Fares Aigoun, Sadjia Mahrane and Amina Hachemi

Bacterial association and oral biofilm formation: A bibliometric analysis

October 2016

Biofilms are complex aggregations of microorganisms formed in any situation where there is contact with superfaces solids, liquids or gases. This study aims to map the international scientific literature on the formation, bacterial adhesion, prevention and treatment of oral biofilms. There were 921 published articles in 274 different journals indexed in the Web of Science, in the 1991-2015 year period. These articles...

Author(s): Luana Kelle Batista Moura, Fabrício Ibiapina Tapety, Mitra Mobim, Eliana Campelo Lago, Eduardo Souza de Lobão Veras, Carla Maria de Carvalho Leite Leal Nunes, Tanit Clementino Santos and Thiago Lima Monte

Phenotypic and genotypic characterization of Pseudomonas aeruginosa isolates from Egyptian hospitals

October 2016

Pseudomonas aeruginosa (P. aeruginosa) is an opportunistic pathogen and a leading cause of hospital- acquired infections. Characterization of the isolates from different infection sites might help to control infections caused by the pathogen. The aim of the present work is to characterize P. aeruginosa isolates recovered from different clinical specimens at two hospitals in Cairo with regard to their antibiogram,...

Author(s): Marwa M. Raafat, Marwa Ali-Tammam and Amal E. Ali,

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.

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

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

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

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

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

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

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

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

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

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

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