Virulence potential of Enterococcus gallinarum strains isolated from selected Nigerian traditional fermented foods
Journal Title: Journal of BioScience and Biotechnology - Year 2014, Vol 3, Issue 2
Abstract
Five Enterococcus isolates from some Nigerian traditional fermented foods were identified as Enterococcus gallinarum by using phenotypic and genotypic tests. Safety properties such as antibiotic susceptibility, virulence gene detection, haemolysin, gelatinase and bacteriocin production were determined using standard methods. There was no resistance to clinically relevant antibiotics. Virulence gene for collagen binding antigen and aggregation substance were detected in 60% of the E. gallinarum strains; while surface adhesin was detected in 20%, but none of the strains had cytolysin activator and gelatinase. Phenotype characterizations of the E. gallinarum isolates indicated that none of the isolates produced haemolysin and gelatinase. Enterococcus gallinarum C103 and U82 had no antimicrobial activity against all the selected bacteria pathogens while E. gallinarum W184, T71 and W21 were active against some of the indicator bacteria pathogens. Only E. gallinarum T71 and W21 showed broad spectra of antimicrobial activity. Combination of virulence factors did not appear in these food isolates. Therefore, these strains particularly the two strains with high spectra of antimicrobial activity could be exploited as functional starters in foods.
Authors and Affiliations
Iyabo Oladipo, Abiodun Sanni, Snehasiktas Swarnakar
Keywords
Related Articles
- EP ID EP127078
- DOI -
- Views 109
- Downloads 0
Differential glycation of arginine and lysine by glucose and inhibition by acesulfame potassium
Glycation is a non-enzymatic process between the reactive carbonyl group of sugars and free amino groups of proteins especially arginine and lysine residues. This process leads to the formation of a group of compounds ca...
Habitat effects on morphological plasticity of Saw-belly (Hemiculter leucisculus) in the Zarrineh River (Urmia Lake basin, Iran)
Saw-belly (Hemiculter leucisculus) is a non-native species, which unfortunately spreads in many aquatic ecosystems of Iran. This species has probably introduced to Zarrineh River with commercially cyprinid species from t...
Recent developments in atom transfer radical polymerization initiators for development of polymer-protein bioconjugates
One of the major challenges in modern synthetic polymer chemistry is to synthesize end defined polymers of different end functionality with predetermined uniform molecular weight. End functionalized polymers/copolymers b...
In silico characterization of boron transporter (BOR1) protein sequences in Poaceae species
Boron (B) is essential for the plant growth and development, and its primary function is connected with formation of the cell wall. Moreover, boron toxicity is a shared problem in semiarid and arid regions. In this study...
Biosocial characteristics of patients with paranoid schizophrenia
Schizophrenia is known as a complex disorder that combines both genetic and environmental factors. Different genes have been tested as candidates for association with schizophrenia and different environmental factors ha...