The Effects of Ellagic Acid From Pomegranate Juice vs. Pure Ellagic Acid on Healthy Male Subjects

Based on the limited knowledge about the difference in bacterial metabolism of a mixture of ellagitannins, punicalin, punicalagin and EA in PJ compared to pure EA leading to intestinal formation of different urolithins (urolithin A, B and iso-urolithin A), the objective of this study is to perform a cross over acute bioavailability study of 1-day consumption of either PJ or EA. Primary endpoint will be the formation and bioavailability of EA and urolithins. Secondary endpoints will be A) effect on the fecal microbiome and B) correlation of urolithin formation to the lipid/cholesterol status of the study participants.

Inclusion criteria

• Age 18-45 years, male and any racial/ethnic group
• Typically consume low fiber/polyphenol diet (beige diet)
• Subjects must understand and sign the informed consent prior to participation
• Subjects must be in generally good health
• Subjects must be able and willing to comply with the requirements of the protocol.

Exclusion criteria

• Eating a high fiber/polyphenol diet or taking any medication or dietary supplements that interfere with the absorption of polyphenols.
• History of gastrointestinal surgery, diabetes mellitus on medications, or other serious medical condition, such as chronic hepatic or renal disease, bleeding disorder, congestive heart disease, chronic diarrhea disorders, myocardial infarction, coronary artery bypass graft, angioplasty within 6 months prior to screening, current diagnosis of uncontrolled hypertension (defined as systolic BP >160mmHg, diastolic BP > 95mmHg), active or chronic gastrointestinal disorders, bulimia, anorexia, laxative abuse, or endocrine diseases (except thyroid disease requiring medication) as indicated by medical history or routine physical examination.
• Screening laboratory value outside of the laboratory normal range that is considered clinically significant for study participation by the investigator.
• Using prebiotics, probiotics, yogurt, and/or any fiber supplements regularly
• Allergy or sensitivity to pomegranate. Subjects will be excluded if there is a prior history of such sensitivity. Since these foods are commonly eaten and allergies are rare, subjects should be aware of this sensitivity prior to entering the study. In addition, any subject with a history of allergy or anaphylaxis of any kind will be excluded
• Taking antibiotics or laxatives within the past 3 months