Tropical Plant Research

Tropical Plant Research

An Internationl Journal by Society for Tropical Plant Research

E-ISSN: 2349-1183 P-ISSN: 2349-9265
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2016, VOLUME 3 ISSUE 3Pages: 642-648

Nutritional composition and fungi deterioration of canned tomato products collected from Ibadan, South-western Nigeria

S. G. Jonathan, B. J. Babalola, O. J. Olawuyi, J. A. Odebode* and A. O. Ajayi
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Abstract:
The present study was conducted in order to evaluate fungi and proximate analysis in three popularly consumed canned tomato products in Ibadan, Nigeria, Neurospora crassa was isolated from Pomo and Terra products while Aspergillus flavus and Macrophomina phaseolina was only isolated from Terra tin tomato products. The presence of Saccharomyces cerevisiae and Cercospora sp. was also observed in Pomo tin tomato products. Penicillium chrysogenum and Fusarium oxysporum was observed in Gino tin tomato products and Terra also shows the presence of F. oxysporum. The proximate analysis shows that the crude protein, ash content, ether extract and dry matter compositions of canned tomato products were significantly influenced by the brands of tomato product analyzed and it was indicted that the tomato products were very rich in nutrient. The Gino tin tomato presented the highest mean ash concentration with significant differences with respect to the Pomo and Terra tin products. There were no significant differences between the ether extract content when compared and significant differences were found within the replicates of the three tomato tin tomato products. The Gino tin products had the least mean value of crude protein which might be as a result of only two fungi isolates present while the high crude protein in Terra tin products is as a result more fungi contaminants that were present during isolation. The variations in aflatoxins levels in all the three mouldy tomato products indicates that they pose a threat to human health since there was invasion by toxigenic fungi after three weeks of storage. However, the opening of tin tomato products allows easy colonization of fungi and this has health implications on human being, Therefore, tin tomato products should be used immediately after opening.
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