National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The study was conducted to investigate bacteria associated with the spoilage of onion bulbs vended in parts of Enugu State, Nigeria. A total of 20 samples were collected from Enugu main market. Samples were cultured on nutrient agar and isolates identified using standard methods based on their microbial and biochemical characteristics. Nutritional and proximate analysis was carried out using standard methods of AOAC, (2010). The bacteria species isolated were Bacillus subtilis, Shigella spp, and Escherichia coli. Escherichia coli had the highest occurrence at (15)75% while Shigella spp occurred lowest at (5)25%. The proximate analysis showed high amount of moisture content at 73.99 ± 0.14aa while ash content had the least at 0.26±0.30aa. Mineral Composition showed high amount of potassium at 67.90mg/kg while lead and copper occurred least at 0.01mg/kg and 0.18 mg/kg respectively. The pathogenicity test on the onions showed that Bacillus subtilis and Escherichia coli were the causes of spoilage on onions. There is need to develop new acceptable pre-harvest and post-harvest disinfection methods.
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