Table 1 In- and exclusion criteria for the participation at the study

○ Healthy volunteers without clinical diagnosed diseases with relevant effect on the gastrointestinal system or on visceral motility

○ Subject under prescription for medication for digestive symptoms such as anti-spasmodic, laxatives and anti-diarrheic drugs or other digestive auxiliaries

○ Reduced bowel movements defined as an average of >1 and ≤ 3.5 stools per week for at least the previous 6 months

○ Relevant history, presence of any medical disorder or intake of medication/dietary supplements, potentially interfering with this trial at screening

○ BMI: 19-30 kg/m²

○ Subjects with stool frequency of ≤ 1 stool every 7 days or > 3.5 stools per week

○ Gastrointestinal symptoms of at least 5 points

○ Subjects not willing to avoid pre- and probiotics for the duration of the study

○ Male or female

○ Intake of antibiotics in the last 4 weeks and laxatives in the last 2 weeks

○ Age ≥ 30 and ≤ 70 years

○ Change of dietary habits within the 4 weeks prior to screening (for instance start of a diet high in fibers)

○ Nonsmoker

○ Pregnant subject or subject planning to become pregnant during the study; breast-feeding subject

○ Written consent to participate in the study

○ Subjects with history of drug, alcohol or other substances abuse, or other factors limiting their ability to co-operate during the study

○ Able and willing to follow the study protocol procedures

○ Participants anticipating a change in their lifestyle or physical activity levels since this may also influence the results

○ Known food intolerance or allergy

○ Subject involved in any clinical or food study within the preceding month