Comparative study of the separation and determination of aspartame and its decomposition products in bulk material and diet soft drinks by HPLC and CE

The direct separation of aspartame (α-L-aspartyl-L-phenylalanine methyl ester) LL-α-APM, and several decomposition products namely LL-β-aspartame (LL-β-APM), L-α-aspartyl-L-phenylalanine (α-AP), L-β-aspartyl-L-phenyl alanine (β-AP), and diketopiperazine (DKP) was accomplished by high performance liq...

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Bibliographic Details
Published in:Journal of liquid chromatography & related technologies 1997-01, Vol.20 (9), p.1437-1444
Main Authors: Aboul-Enein, H.Y, Bakr, S.A
Format: Article
Language:English
Subjects:
Biological and medical sciences
diet-related diseases
Food additives
food composition
food contamination
Food industries
food quality
Fundamental and applied biological sciences. Psychology
General aspects
human nutrition
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Summary:The direct separation of aspartame (α-L-aspartyl-L-phenylalanine methyl ester) LL-α-APM, and several decomposition products namely LL-β-aspartame (LL-β-APM), L-α-aspartyl-L-phenylalanine (α-AP), L-β-aspartyl-L-phenyl alanine (β-AP), and diketopiperazine (DKP) was accomplished by high performance liquid chromatography (HPLC) using a Chirobiotic T (Teicoplanin) column, and capillary zone electrophoretic (CZE) methods. The presence of any of these decomposition products in diet soft drinks labeled to contain the sweetener, also in coffee containing the artificial sweetener LL-α-APM, were investigated.
ISSN:1082-6076
1520-572X
DOI:10.1080/10826079708010986