Comparative and quality analyses of different tomato brands sold in major markets in Ibadan, Nigeria

Abstract

Tomato paste is a good source of lycopene and vitamin C. These are antioxidants which limit the adverse
effects of free radicals. It had been reported that tomato products imported into Nigeria were adulterated and
substandard, but these claims have not been supported using evidence based study. Twenty eight different
tomato products were identified. Of these numbers, sixteen were randomly selected. Five tins and sachets of
each of these products were purchased respectively and used for analyses. All the products were registered
with NAFDAC. Among the products investigated, there were significant differences in moisture, Lycopene, total
sugar, starch, vitamin C and acidity (P<0.05). 14 (87.5%) of the tomato products contained sugar against 2
(12.5%) which were sugar –free. 13 (81.25%) contained starch against 3 (18.75%) which were starch- free; and
this was not declared in over 75% of the products. Tomato products made in Nigeria were of comparable quality
with those made in US and Italy (P>0.05), but those imported from China were significantly higher in total sugar
and starch, but significantly lower in lycopene (P< 0.05). Variations in content between tin and sachet of the
same brand and between different batches of the same product were observed. The need to patronize and
support local made products while tightening regulatory processes of products imported into the country
becomes imperative.