Effect of Acute Consumption of Crackers Enriched with Grape Seed Flour or Barley Flour with Added β-Glucan on Biomarkers of Postprandial Glycemia, Lipidemia, and Oxidative Stress: A Crossover Study

Author:

Chatziharalambous Despina1,Papagianni Olga1ORCID,Potsaki Panagiota1,Almpounioti Kalliopi1ORCID,Koutelidakis Antonios E.1ORCID

Affiliation:

1. Unit of Human Nutrition, Laboratory of Nutrition and Public Health, Department of Food Science and Nutrition, University of the Aegean, Leoforos Dimokratias 66, Myrina, 81400 Lemnos, Greece

Abstract

Background: Grape seed polyphenol bioactivity is linked to reduced risk of metabolic syndrome, type 2 diabetes, obesity, and coronary heart disease development. Furthermore, regular consumption of β-glucan is associated with decreased lipidemic and glycemic profiles. The aim was to investigate the acute effect of crackers enriched with either 10% grape seed flour or 40% barley flour with added β-glucan along with a high-fat and high-carbohydrate meal on biomarkers of postprandial glycemia, lipidemia, and oxidative stress. Methods: In a randomized, three-arm crossover design study, 12 healthy subjects were assigned to consume breakfast consisting of bread, butter, and 250 mL water along with crackers containing either (a) wheat flour, (b) 10% grape seed flour, or (c) 40% barley flour enriched with β-glucan. Blood samples were drawn immediately before and 30, 90, and 180 min after the meal. Total antioxidant capacity was measured in plasma with the FRAP method. Total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, triglycerides, glucose, and uric acid were measured in serum. Results: Tested markers did not differ between the intervention groups at baseline, 30, 90, and 180 min (p ≥ 0.05) post-prandially. Conclusions: Enriched cracker consumption did not significantly affect the selected markers at the postprandial state, although better serum glucose and lipid levels, similar to baseline values, were maintained.

Funder

European Regional Development Fund of the European Union and Greek national funds

Publisher

MDPI AG

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