NCT02793297

Effects of Sourdough Fermented Rye Crisp Bread on Appetite and Postprandial Metabolic Responses

Effects of Sourdough Fermented Rye Crisp Bread on Appetite and Postprandial Metabolic Responses: A Randomized Cross-over Trial

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 24 (actual)
• Sponsor: Swedish University of Agricultural Sciences · Academic / Other
• Sex: All
• Age: 18 Years – 70 Years
• Healthy volunteers: Accepted

Summary

The overall objective is to evaluate the impact of sourdough fermented crisp bread on effects on appetite and postprandial glucose and insulin responses. Beneficial effects on appetite and postprandial insulin responses have been observed, particularly for unfermented rye crisp breads in a previous study. In the present study, the investigators evaluated how the intake of sourdough fermented rye crisp breads vs. unfermented rye crisp bread as well as a control refined wheat crisp bread product may affect self-rated appetite and postprandial insulin and glucose responses in healthy men and women in a meal-study. The investigators characterized intervention products with regards to microstructural and chemical features in order to elucidate underlying mechanisms for potential effects observed on appetite and postprandial metabolic responses.

Detailed description

Two commercial whole grain rye crisp breads processed differently (unfermented and sourdough fermented) and a refined wheat control product were tested in the study. The rye crisp bread products contained similar ingredients. All products provide similar amounts of available carbohydrates (about 30g). The total amount of test product is about 50-60g. The specific primary aim of the study: To conduct a short-term breakfast intervention study in humans (n = 24) to compare the effect of 2 high-fiber rye crisp bread products processed in different ways (sourdough fermented or unfermented) and a refined wheat control crisp bread as part of a normal breakfast on self-rated appetite, postprandial glucose and insulin concentrations. Difference in post-prandial insulin response between products is the primary endpoint. Secondary aim (conducted if significant effects in the primary endpoint have been demonstrated): To assess changes in hormones and their relation to self-perceived satiety, hunger and desire to eat and to differences in chemical and microstructural composition of the tested foods.

Conditions

• Appetite

Interventions

Type	Name	Description
OTHER	refined wheat crisp bread	Refined wheat crisp bread (52 g) was served as part of a regular breakfast together with margarine (15 g), cheese (20 mg), coffee/tea (150 mL), and juice (150 mL). The amount of crisp bread was adjusted so that all arms provided a similar amount of available carbohydrate (35 g).
OTHER	sourdough fermented rye crisp bread	Sourdough fermented rye crisp bread (59.4 g) was served as part of a regular breakfast together with margarine (15 g), cheese (20 mg), coffee/tea (150 mL), and juice (150 mL). The amount of crisp bread was adjusted so that all arms provided a similar amount of available carbohydrate (35 g).
OTHER	unfermented rye crisp bread	Unfermented rye crisp bread (59.8 g) was served as part of a regular breakfast together with margarine (15 g), cheese (20 mg), coffee/tea (150 mL), and juice (150 mL). The amount of crisp bread was adjusted so that all arms provided a similar amount of available carbohydrate (35 g).

Timeline

• Start date: 2015-01-01
• Primary completion: 2016-03-01
• Completion: 2016-03-01
• First posted: 2016-06-08
• Last updated: 2016-06-09