Comparison of Two Methods for The Determination of Vitamin C (Ascorbic Acid) in Some Fruits

Isam Eldin H. Elgailani, Mohamed A. M. Gad- Elkareem, Elnoor A. A. Noh, Omer E. A. Adam and Ahmed M. A. Alghamdi

American Journal of Chemistry, 2017, vol. 2, issue 1, 1-7

Abstract: The present research deals with the comparison of the two methods for the determination of vitamin C (ascorbic acid) content in some fruits namely apples, oranges, lemons, tangerines and grapes. The fruits were collected from local market in Baljurashi city. Vitamin C content of fresh fruit were determined by titrimetric and spectrophotometric methods using potassium permenganate as a chromogenic reagent. The absorbance is measured spectrophotometrically at 530 nm. The titrimetric method was carried out by an iodimetric back-titration. The results obtained from this study revealed that there is no significant difference between the two methods, but the spectroscophotometric method has been preferred to determine the amount of vitamin C than the titrimetric method.

Keywords: Spectrophotometric; Titrimetric; Vitamin C; Ascorbic acid; Determination. (search for similar items in EconPapers)
Date: 2017
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