Effect of Native Chicory Inulin Supplementation on Rates of Microbial Change Between Individuals
Purdue University
Summary
The main aim of this study is to investigate differences in rate, extent of change and persistence of the gut microbiota in healthy adult volunteers in response to native chicory inulin. Along with investigating the impact of native chicory on bowl habits, mood and appetite. The two main questions this study aims to answer: * To what extent do differences exist in rate of change over time between individuals in gut microbiota response (Bifidobacterium growth) to native chicory inulin supplementation. * To what extent do differences exist between individuals in persistence of the gut microbiota upon stopping supplementation. The effects of native chicory inulin on gut microbiota response will be compared to a maltodextrin placebo to sure changes in gut microbiota result directly from chicory inulin supplementation. Participants will firstly complete a one-week run-in phase to establish baseline data and will then be allocated to either native chicory inulin or maltodextrin supplementation for 6 weeks. Inulin will be delivered at 12 g/day split into 2 x 6g portions. Maltodextrin will be calorie matched at 6 g/day split into 2 x 3g portions. This will then be followed by a 6 week post-supplementation phase. Fecal and blood samples will be collected regularly throughout all phases for analysis of gut microbiota and compounds of interest. Participants will also record any changes in gastrointestinal sensation, bowel habits and mood in a diary. Changes in appetite sensation will also measured.
Description
The term prebiotic was established in 1995 and has since undergone several updates in definition. As of 2017, the International Scientific Association for Probiotics and Prebiotics (ISAPP) defines prebiotics as a substrates that is selectivity utilised by the host microorganism conferring a health benefit. Of all prebiotics the most highly researched prebiotics are inulin and fructo-oligosaccharides that belong to a group of non-digestible carbohydrates referred to as inulin-type fructans. The main concept behind prebiotics is to stimulate selective changes in microbiota - namely Bifidobacteri…
Eligibility
- Age range
- 18–45 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: * adults aged 18-45 * BMI \>18.5 - \< 30 kg/m2 * Regular bowel movements (\> 4 days per week) Exclusion Criteria: * Self-reported sensitivity to FODMAPs and following a low FODMAP diet ((FODMAPS stands for fermentable oligosaccharides, disaccharides, monosaccharides and polyols). * Self-reported food allergies and sensitivities including gluten, dairy, nuts, soya and lactose etc. * Self-reported antibiotic treatment in the past 6 months. * Self-reported history of gastrointestinal disease and/or heart disease, cardiovascular, liver, and respiratory disorders, cancer and/…
Interventions
- OtherInulin
12 g/day prebiotic supplement taken daily split into 2 dosages of 6 g dissolved in water
- OtherMaltodextrin
6 g/day maltodextrin taken daily split into 2 dosages of 3 g dissolved in water
Location
- Purdue UniversityWest Lafayette, Indiana