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Simultaneous Analysis of Sweeteners and Amino Acids in Energy Drink (NH2P-40 2D)

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Sweeteners in an energy drink were analyzed using Asahipak NH2P-40 2D, a polymer-based amino column, with LC/MS/MS detection. Under these conditions, sweeteners, amino acids and water-soluble vitamins such as carnitine and pyridoxine can be simultaneously analyzed.


Sample : 5μL
500-fold diluted Energy drink with H2O/CH3CN=1/1
Sucralose
Acesulfame (k)
meso-Erythritol
Carnitine
Leucine
Isoleucine
Valine
Pyridoxine
Rebaudioside A


Column       : Shodex Asahipak NH2P-40 2D (2.0mmI.D. x 150mm)
Eluent       : (A) 0.1% NH3 aq./(B) CH3CN
               Isocratic ; (B%) 78%
Flow rate    : 0.2mL/min
Detector     : ESI-MS (SIM Positive/Negative)
Column temp. : 30°C

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