CHEMICAL ANALYSIS OF SOME PROCESSED FOODS

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Date
1981-01
Authors
CHIKE, ODUOZA FRIGIDIAN
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Abstract
Analysis was performed on some processed foods namely Vegfru Tomato Paste (Factory Sample), Salsa Tomato Paste and Vegfru Tomato Paste (Shop Shelf Sample). Others were French Orange Pellorce and Nigerian Orange Juice, All the samples were canned. Two of the samples Salsa Tomato Paste and French Orange Pellorce were imported products while the rest were processed and canned in Nigeria. The samples were purchased from the shop shelves in Zaria except the Vegfru tomato paste (factory sample) which was obtained from the factory soon after processing. They were analysed for Moisture, total solids, Ash, Fat, Sugar, Starch, Nitrogen, Protein, Crude fibre and Tannin, They were also analysed for inorganic elements which include Lead, Copper, Calcium, Magnesium, Sodium, Potassium, Phosphorous, Iron and Tin, The imported samples were compared with the ones processed and canned in Nigeria for the above constituents. Their values did not differ significantly except in a few cases. However, Salsa tomato paste and the Nigerian Orange juice were relatively more contaminated with heavy metals compared to the other samples. The shop shelf sample of Vegfru tomato paste was also found to be more contaminated than the factory sample and in most cases the latter had higher nutritional values in terms vii . of proximate food composition. The results al3o showed tha t pastes and orange products analysed were generally of similar qualitie s with other samples analysed and reported in the literatur e with the exception of the French orange pellorce which showed some appreciable deviations. Pre-digestion with Nitri c acid (6%) up to 100 minutes proved a more efficien t method for the determination of phosphorus compared to the other conventional methods employed. Individual tin s of each foodstuff were chosen randomly and it was found tha t in most cases they were fully representative of the whole foodstuff.
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CHEMICAL ANALYSIS OF SOME PROCESSED FOODS, CHEMICAL ANALYSIS OF SOME PROCESSED FOODS
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