Determination and Comparison of Aspartame Level in Low Calorie Table Top Sweeteners by Ultraviolet Visible Spectroscopy – Pages 197-201

Determination and Comparison of Aspartame Level in Low Calorie Table Top Sweeteners by Ultraviolet Visible Spectroscopy

Pages 197-201

Narjis Naz and Subreena Altaf

Department of Chemistry, Lahore College for Women University, Lahore, Pakistan

https://doi.org/10.6000/1927-5129.2018.14.30

Abstract: The analysis of aspartame was done in table top sweeteners using Ultraviolet visible Spectroscopy. The method is based on the formation of manganate ion (MnO42-) when potassium permanganate oxidizes aspartame. The analysis was carried out at a fixed wavelength of 600nm exactly after 48 minutes of sample preparation using 1mL of 0.01M KMnO4 and 2mL of 1.0M NaOH. A linear calibration graph was obtained with the regression coefficient of 0.9999 and the percentage recovery was in the range of 92.7-101.6%. The Relative standard deviation for the method was found to be 1.03%.

Keywords: Aspartame, UV/Visible spectroscopy, Sweetener, KMnO4.