February 2015
Detection of aflatoxigenic Aspergillus strains by cultural and molecular methods: A critical review
Aflatoxin contamination of food and feed commodities, caused by Aspergillus section Flavi group of fungi, is a serious problem worldwide. Exposure through consumption of contaminated food and feed has deleterious effects on human and animal health. Therefore, aflatoxin contaminated products are a barrier to international trade of agricultural commodities. Not all fungi from Aspergillus section Flavi produce aflatoxins....
February 2015
Characterization of the quorum quenching activity of Streptomyces minutiscleroticus: A new approach for infection control
By playing a major role in the virulence of several pathogenic bacteria, N-Acyl homoserine-lactone (AHL) -dependent quorum sensing, is now considered a useful target for antimicrobial therapy. In the present study a total number of 63 Streptomyces isolates recovered from different soil samples collected from different localities in Egypt were screened for quorum quenching activity using a fast, reliable, simple...
February 2015
AmpC β-lactamase production in enterobacteria associated with bovine mastitis in Brazil
Enterobacteriaceae are the main etiological agents of environmental bovine mastitis and are often resistant to antimicrobials, especially β-lactam class due to the production of β-lactamases. These can be classified into several groups according to the molecular structure and substrate activity. The present study evaluated the profile of pheno-genotypic resistance to β-lactams, with emphasis on the...
February 2015
Public health significance of food borne pathogens in edible flours
Foodborne pathogens cause a considerable public health burden and challenge. They cause illnesses particularly in groups at risk, such as children, elderly and immuno- compromised persons. The microbiological quality of locally produced and industrially processed wheat, unripe plantain, yam and cassava flours were investigated for the presence of foodborne pathogens that could pose a risks to individuals that consume...
February 2015
Observations of mycotal species growth on the rainbow trout eggs (Oncorhynchus mykiss)
The authors investigated the growth of hydromycobiota on the eggs of rainbow trout (Oncorhynchus mykiss) in waters of different trophicity. Of the O. mykiss eggs that were investigated, 16.6% were found to be infected by mycotal species. Thirty mycotal species were found on eggs obtained from adult female representatives. Achlya polyandra, A. radiosa, Aphanomyces laevis, Leptomitus lacteus, Saprolegnia ferax and...
February 2015
Effect of environmental factors on toxin production of Drechslera bicolor, a causal agent of leaf blight in bell pepper
Drechslera bicolor (Mitra.) Subram. and Jain, cause of leaf blight in bell pepper [Capsicum annuum var. grossum (L.) Sendt.], leads to necrotic lesions, early leaf senescence and yield losses. Detailed physiological analysis can contribute to an improved understanding of bell pepper disease interaction and cultivar improvement. D. bicolor produced maximum toxin in Richards’ medium and toxin was found most active...
February 2015
Antifungal effect of Coriolopsis polyzona (Pers) on fungi isolated from remnant foods and wastewater from restaurants in Akure metropolis, Nigeria
The present study assessed the antifungal properties of extracts of Coriolopsis polyzona against fungi isolated from remnant foods and wastewater that are discharged into the environment without treatment. Species of fungi isolated from remnant foods and wastewater in Akure metropolis are Aspergillus fumigatus, Aspergillus niger, Mucor mucedo, Penicillium chrysogenum, Apsergillus flavus, Fusarium oxysporum, Penicillium...
February 2015
Molecular ecological typing of wild type Aspergillus terreus from arid soils and screening of lovastatin production
Arid soils are complex ecosystem that maintains topographically distinct mycoflora populations. A total of 45 soil samples collected from the arid soils in Iraqi desert were cultured by dilution plate method and screened for Aspergillus terreus. The aim of this study was to enhance ecological knowledge of cultured colonies variation of A. terreus as well as environmental interactions in arid soils. An attempt is made to...
February 2015
Frequent carriage of invasive Salmonellae amongst patients infected with schistosomiasis in Sudan
Bacteria-parasite association has been documented as a factor that is responsible for continued and prolonged bacterial infection, such as typhoid and paratyphoid fever in schistosomiasis patients. This work aimed to determine the presence of typhoid and paratyphoid Salmonella among schistosomiasis patients and to evaluate the efficacy of Widal test on such population. A cross sectional descriptive study was conducted...
February 2015
Characterisation of yeasts isolated from traditional opaque beer beverages brewed in Zimbabwean households
Variability exists in raw materials and processing methods used to produce household traditional opaque beers in Zimbabwe, resulting in beers of variable quality, depending on fermenting micro-organisms involved. Yeasts are important in determining the alcohol content, nutrition and organoleptic properties of the beers. This study aimed at determining the diversity and characteristics of the predominant yeasts isolated...
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