Glycemic index and microstructure analysis of a newly developed fiber enriched cookie

verfasst von

Jan Philipp Schuchardt, Jasmin Wonik, Ute Bindrich, Michaela Heinemann, Heike Kohrs, Inga Schneider, Katharina Möller, Andreas Hahn

Abstract

A diet with a high glycemic index (GI) is associated with an elevated risk for obesity or type 2 diabetes. We investigated the GI of a newly-developed fiber enriched cookie and characterized the microstructure of ingredients used. In a study with 26 non-diabetic healthy volunteers it was shown that the fiber enriched cookie has a GI of 58.9 in relation to white bread as reference. Using a conversion factor of 1.4, the GI of the fiber enriched cookie in relation to a glucose-solution is 42.0 and can be classified as a low-GI food. Postprandial insulin concentration was significantly lower after consumption of fiber enriched cookies compared to white bread. Glucose release after in vitro digestion was significantly lower from fiber enriched cookies compared to other cookies tested. In addition to its high percentage of fiber, the cookies' low GI can be attributed to the limited gelatinization potential of the starch granules found in the ingredients used. Using confocal laser scanning microscopy it is shown that starch granule surface area of whole grain barley flour, spelt flour and oat flakes bears cluster-shaped protein-NSPS complexes that preferentially absorb water in conditions of water shortage and thereby prevent starch gelatinization.

Organisationseinheit(en)

Institut für Lebensmittelwissenschaft und Humanernährung
Abteilung Ernährungsphysiologie und Humanernährung

Externe Organisation(en)

Deutsches Institut für Lebensmitteltechnik e.V.

Typ

Artikel

Journal

Food & function

Band

7

Seiten

464-474

Anzahl der Seiten

11

ISSN

2042-6496

Publikationsdatum

01.2016

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Lebensmittelwissenschaften

Ziele für nachhaltige Entwicklung

SDG 3 – Gute Gesundheit und Wohlergehen

Elektronische Version(en)

https://doi.org/10.1039/c5fo01137j (Zugang: Offen)