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Quantification of Isomaltulose in Food Products by Using Heteronuclear Single Quantum Coherence NMR-Experiments

Fels, Lea 1; Ruf, Franziska 1; Bunzel, Mirko 1
1 Institut für Angewandte Biowissenschaften (IAB), Karlsruher Institut für Technologie (KIT)

Abstract:

Isomaltulose is a commonly used sweetener in sports nutrition and in products intended for consumption by diabetics. Because previously established chromatographic methods for quantification of isomaltulose suffer from long analysis times (60–210 min), faster quantitative approaches are required. Here, an HSQC (heteronuclear single quantum coherence) experiment with reduced interscan delay was established in order to quantify isomaltulose next to potential additional sugars such as D-glucose, D-fructose, D-galactose, sucrose, lactose, and maltose in 53 min. By using HSQC coupled to non-uniform sampling (NUS) as well as ASAP-HSQC (acceleration by sharing adjacent polarization), analysis times were reduced to a few minutes. Application of NUS-HSQC with reduced interscan delay takes 27 min, resulting in accurate and precise data. In principle, application of ASAP-HSQC approaches (with analysis times as low as 6 min) can be used; however, precision data may not suffice all applications.


Verlagsausgabe §
DOI: 10.5445/IR/1000149225
Veröffentlicht am 01.08.2022
Originalveröffentlichung
DOI: 10.3389/fnut.2022.928102
Scopus
Zitationen: 2
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Biowissenschaften (IAB)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2022
Sprache Englisch
Identifikator ISSN: 2296-861X
KITopen-ID: 1000149225
Erschienen in Frontiers in Nutrition
Verlag Frontiers Media SA
Band 9
Seiten Art.-Nr.: 928102
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 27.06.2022
Nachgewiesen in Web of Science
Dimensions
Scopus
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