Effect of Standardized Grape Powder Consumption on the Gut Microbiome of Healthy Subjects: A Pilot Study.
Nutrients
; 13(11)2021 Nov 06.
Article
in En
| MEDLINE
| ID: mdl-34836220
ABSTRACT
Grapes provide a rich source of polyphenols and fibers. This study aimed to evaluate the effect of the daily consumption of 46 g of whole grape powder, providing the equivalent of two servings of California table grapes, on the gut microbiome and cholesterol/bile acid metabolism in healthy adults. This study included a 4-week standardization to a low-polyphenol diet, followed by 4 weeks of 46 g of grape powder consumption while continuing the low-polyphenol diet. Compared to the baseline, 4 weeks of grape powder consumption significantly increased the alpha diversity index of the gut microbiome. There was a trend of increasing Verrucomicrobia (p = 0.052) at the phylum level, and a significant increase in Akkermansia was noted. In addition, there was an increase in Flavonifractor and Lachnospiraceae_UCG-010, but a decrease in Bifidobacterium and Dialister at the genus level. Grape powder consumption significantly decreased the total cholesterol by 6.1% and HDL cholesterol by 7.6%. There was also a trend of decreasing LDL cholesterol by 5.9%, and decreasing total bile acid by 40.9%. Blood triglyceride levels and body composition were not changed by grape powder consumption. In conclusion, grape powder consumption significantly modified the gut microbiome and cholesterol/bile acid metabolism.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bile Acids and Salts
/
Plant Extracts
/
Cholesterol
/
Vitis
/
Gastrointestinal Microbiome
Limits:
Adult
/
Female
/
Humans
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Male
/
Middle aged
Language:
En
Journal:
Nutrients
Year:
2021
Document type:
Article
Affiliation country:
United States