Journal
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
Volume 62, Issue 19, Pages 4359-4368Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jf5007566
Keywords
berries; fiber; SCFAs; anthocyanins; cholesterol
Funding
- Antidiabetic Food Centre, a VINNOVA VINN Excellence Center at Lund University
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Dietary fiber and flavonoids, important components in berries, are suggested to improve metabolic health. This study investigates whether soluble and insoluble fractions isolated from bilberry, black currant, and raspberry affect the formation of short-chain fatty acids (SCFAs), uptake and excretion of flavonoids, and levels of cholesterol differently. Cecal SCFA pools were higher in rats fed the soluble than the insoluble fractions (525 vs 166 mu mol, P < 0.001), whereas higher concentrations of butyric acid were found in the distal colon and serum of rats fed the insoluble fractions (5 vs 3 mu mol/g and 58 vs 29 mu mol/L, respectively, P < 0.001). The soluble bilberry fraction gave lower amounts of liver cholesterol (56 mg) than the other berry fractions (87 +/- 5 mg), formed the highest amount of SCFAs (746 vs 266 +/- 21 mu mol), and contributed the highest intake of anthocyanins. Cyanidin-3-glucoside monoglucuronide was detected in the urine of all groups, whereas anthocyanins were found only in groups fed soluble black currant and raspberry.
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