Microorganisms responsible for the spoilage of tomato fruits, Lycopersicum esculentum, sold in markets in Benin City, southern Nigeria.
Journal Title: Scholars Academic Journal of Biosciences - Year 2014, Vol 2, Issue 7
Abstract
This study investigated the microorganisms associated with the spoilage of fresh fruits of tomato, Lycopersicum esculentum obtained from four markets in Benin City, southern Nigeria. A total of nine species of bacteria isolated and identified were: Bacillus subtilis, B. cereus, B. aureus, Escherichia coli, Klebsiella aerogenes, Pseudomonas aeruginosa, Salmonella typhi, Proteus mirabilis and Staphylococcus aureus. The most prevalent bacterial isolate was Bacillus subtilis with 49.2% and was found in all samples from the four markets. Proteus mirabilis was the least prevalent isolate with 13.1% and was found in samples from Vegetable market only. The fungal isolates were Penicilium sp., Mucor sp., Aspergillus niger, Fusarium sp. and Saccharomyces cerevisae. Whereas Mucor sp. was the most prevalent with 57.7% and was found in fruit samples from all the markets, Saccharomyces cerevisiae had the least prevalence of 9.1% and occurred only in Vegetable and Santana markets. The mean microbial count ranges were: 2.0 x 104 – 35.0 x 104 for New Benin market; 1.0 x 104 – 25 x 104 for Vegetable market; 2.0 x 104 – 23.0 x 104 for Oba market and 1.1 x 104 – 9.3 x 104 for Santana market. The antibiotic susceptibility profile of bacterial isolates obtained from spoilt tomato fruit samples was determined using the disc-diffusion method. Bacillus subtilis was the most sensitive to all the antibiotics used while Pseudomonas aeroginosa and Salmonella typhi showed the highest resistance. The presence of toxin producing fungi Aspergillus niger, which are capable of causing food poisoning as well as some bacterial isolates with multiple antibiotics resistance, raises concern over public health risks that may be associated with the consumption of spoilt tomato fruits.
Authors and Affiliations
Wogu MD, Ofuase O
Keywords
Related Articles
- EP ID EP377824
- DOI -
- Views 98
- Downloads 0
Phenotypic Detection of Klebsiella pneumoniae Strains - Producing Extended Spectrum β-Lactamase (ESBL) Enzymes
The primary objective of this study was to detect by in vitro phenotypic method the occurrence of extended spectrum β-lactamase (ESBL) enzymes from Klebsiella pneumoniae isolates, and to buttress the growing need to dete...
Study of Serum Electrolyte Changes in End Stage Renal Disease Patients Before and After Hemodialysis Sessions: A Hospital Based Study
Chronic renal failure (CRF) is a worldwide health problem, a leading cause of mortality in the developed countries. Patients with CRF are at higher risk for cardiovascular disease (CVD). Hyperkalemia is a commonly encoun...
Comparison of height and weight growth in children 5-14 years old with and without primary nocturnal enuresisin Afzalipoor Hospital in 1394
There are studies that children with primary nocturnal enuresis and poor growth in height and weight more slowly than other children, according to the same study ever to examine this TasyrahtmalyDrshhrkrman, and yet ther...
A comparative study of Effect of Rhizobacteria onto seedling vigour of groundnut in in-vitro condition isolated from Kuttch region
Some high salt tolerant Plant Growth Promoting bacteria(BM6, AMAAS57, AMAAS357, R29 and R5) were isolated from Gujarat kuttch region. Their PGP characters were characterized at lab by different biochemical test. To stud...
Comparative Analysis on the Effectiveness of the Different Brands of Commercialized Dishwashing Liquids
Abstract:This study was conducted to determine the effectiveness of different brand of commercialized dishwashing liquid namely: Joy, Axion, Surf, Mr. Clean, specifically it was conducted to compare the effectiveness of...