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Determination of Ascorbic Acid Levels in Hibiscus Sabdariffa (Zobo Rod) and Other Tropical Leaves

Journal: International Journal of Science and Research (IJSR) (Vol.3, No. 6)

Publication Date:

Authors : ; ; ; ;

Page : 1505-1508

Keywords : Hibiscus sabdariffa; chemometrics; Ammonium cerium(IV) sulphate; 2; 6-dichoropheneindophenol.; titrimetry;

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"ABSTRACT: Ascorbic acid level in zobo rod a multidimensional tropical leaf and other leaf samples were determined by titrimetric method using ammonium cerium (IV) sulphate and 2,6-dichlorophenolindophenol. It was discovered that leaves like zobo rod, orange, guava, lime, lemon, pawpaw and Icheku have high ascorbic acid content of 44.44mg/100g, 57.31mg/100g,40.80mgl/100g,41.35mg/100g, 41.35mg/100g,36.75mg/100g and 30.43mg/100g respectively while leaf of avocado pea and okra have low ascorbic acid level of 15.20mg/100g and 20.70mg/100g respectively. Results obtained using ammonium cerium (IV) sulphate showed higher level of vitamin C compared to that of 2,6-dichlorophenolindophenol though without large differences. Chemometrically the results obtained from the methods were compared and at 95% level of confidence was found to be significant. Key words: Hibiscus sabdariffa, chemometrics, Ammonium cerium(IV) sulphate, 2,6-dichoropheneindophenol.,titrimetry "

Last modified: 2014-06-27 19:25:43