Diabetes, Obesity
Conditions
Brief summary
To gain a better understanding about the conditioning effect of consumption of slowly digestible carbohydrate on gastric emptying rate, respiratory quotient and metabolic flexibility, this study will focus on monitoring change in gastric emptying with consumption of a single source of slowly digestible carbohydrate (30 g of raw corn starch) for 21 days and compared to a control (21 days of continious consumption of rapidly digesting carbohydrate maltodextrin).
Detailed description
Corn starch, a commonly consumed food ingredient, considered GRAS (generally recognized as safe) CFR 182.70- 182.90 will be used as the test meal treatment fed to non-responding subjects (rapid gastric emptying rate after consumption of slowly digestible carbohydrate) for 1 month. Corn starch will be mixed with applesauce (200 g) and a small amount of xanthan gum (amount to be determined) (GRAS # 121) for palatability and viscosity, respectively. In order to determine whether potential changes in gastric emptying time are induced by consumption of slowly digestible carbohydrates, a control group will be used. The control group will consume a meal composed applesauce (200 g) and xanthan gum with a fast digesting carbohydrate (30 g DE -1 maltodextrinpregelatinized starch). The product is commercially available and will be provided by Tate and Lyle under the brand name of Star-Dri 1. The general term maltodextrin is a non-sweet nutritive polymer that consists of D-glucose units linked primarily by \[alpha\]-1-4 bonds and that has a dextrose equivalent (D.E.) of less than 20. It is regarded as Generally Recognized as Safe (GRAS) by the U.S. Food and Drug Administration for direct use as a food ingredient (GRAS, 21CFR184.1444).DE-1 Maltodextrin is commercially available and will be provided by Tate and Lyle under the brand name of Star-Dri 1. Maltodextrin is a non-sweet nutritive saccharide polymer that consists of D-glucose units linked primarily by \[alpha\]-1-4 bonds and that has a dextrose equivalent (D.E.) of less than 20. It is regarded as Generally Recognized as Safe (GRAS) by the Food and Drug Administration for direct use as a food ingredient (GRAS, 21CFR184.1444). Ultimately, this study will help elucidate attributes of carbohydrate-based foods that can promote slow digestion and create a satiety feeling and promote weight management, which can then be implemented to develop foods with superior health benefits.
Interventions
DIETARY_SUPPLEMENTslowly digestible carbohydrate
carbohydrates with slow digestion rate have the capacity to induce slow gastric emptying time and potentially modify metabolic response and modulate postprandial glycemia.
Sponsors
Purdue University
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
PREVENTION
Masking
SINGLE (Subject)
Masking description
Participants were not aware of the treatment recieved
Intervention model description
treatment (21 days of consumption of 30 g of raw corn starch) and control (21 days of consumption of maltodextrin)
Eligibility
Sex/Gender
ALL
Age
18 Years to 50 Years
Healthy volunteers
Yes
Inclusion criteria
* normal body mass index (18.5 kg/m² \< BMI \< 25) * healthy eating index score (\<65)
Exclusion criteria
* gastrointestinal and cardiovascular disease * food allergies or intolerances * pregnancy * smokers
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Gastric half emptying time | 21 days of intervention | Using a 13C octanoic acid breath test we assessed gastric emptying time using a non-invasive procedure |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Respiratory exchange ratio and metabolic flexibility | 21 days of intervention | Using a portable, handheld device we assessed CO2 production after a consumption of a standardized meal. This device helped used determine RER and subsequent metabolic flexibility. |
| Height and Weight | Height and weight will only be entered at baseline. | Height (in cm) and Weight (in Kg) will not be individually collected and will not be an outcome in the study. However, height and weight will be used by the algorithm using by the device (Lumen) to calculate RER. We do not expect to see changes in weight during the intervention. |
Countries
United States
Outcome results
None listed