acta satech Journal of the Life & Physical Sciences Babcock

Vitamin C composition and mineral content of some Nigerian packaged juice drinks
*G. A. Dimari and +** Hati S. S.
*Department of Chemistry, University of Maiduguri, Maiduguri-Nigeria **Department of Chemistry, IBB University, Lapai-Nigeria
2010

ABSTRACT
Vitamin C composition and minerals (Cu, Fe, Mg and Zn) were determined in some Nigerian packaged fruit juice (PJ). Samples were analysed on the bases of fruit juice types: single or mixed fruits. Determination of vitamin C was achieved by oxidation-reduction methods using standardized 2, 6-Dichloroindophenol (DCP), while minerals were determined by flame atomic absorption spectrometry (FAAS). Results revealed an average ratio of 30:70 % single to mixed fruit juice type from total sample analysed. Vitamin C concentrations in the PJ ranged from 7.8 to 27.3 mg/100 mL, with an average concentration of 16.6  4.97 mg/100 mL. Average concentrations of Cu, Fe, Mg and Zn in PJ were 0.12  0.08, 0.10  0.03, 1.61  0.43 and 1.18  0.18 mg/L respectively. These results were compared with the USDA (SR21) database and it is deduced that mixed fruits juice do not necessarily indicate enhanced vitamin C and minerals but perhaps flavor and colour intensity. Also that most PJ studied provide less adequate vitamin C content than their natural counterpart, but may however provide good source of mineral supplement such as Cu and Zn.
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