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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Agriculture / Faculty of Agriculture >
Peer-reviewed Journal Articles, etc >
Water-soluble dietary fibers enhance bioavailability of quercetin and a fiber derived from soybean is most effective after long-term feeding in rats
| Title: | Water-soluble dietary fibers enhance bioavailability of quercetin and a fiber derived from soybean is most effective after long-term feeding in rats |
| Authors: | Trakooncharoenvit, Aphichat Browse this author | | Tanaka, Seiya Browse this author | | Mizuta, Erika Browse this author | | Hira, Tohru Browse this author →KAKEN DB | | Hara, Hiroshi Browse this author →KAKEN DB |
| Keywords: | Quercetin | | Water-soluble dietary fiber | | Bioavailability | | Fermentation | | Degradation |
| Issue Date: | 2019 |
| Journal Title: | European Journal of Nutrition |
| Volume: | 59 |
| Issue: | 4 |
| Start Page: | 1389 |
| End Page: | 1398 |
| Publisher DOI: | 10.1007/s00394-019-01992-9 |
| Abstract: | Purpose To investigate the effects of water-soluble dietary fibers (pectin, soybean fiber, and guar gum) on the bioavailability of quercetin glucoside mixture (Q3GM) comprising quercetin-3-O-glucoside (Q3G, 31.8%) and its glucose adducts. Methods Male Wistar/ST rats were fed test diet containing 0.7% Q3GM with or without 5% of each dietary fiber for 8 weeks. Total quercetin derivatives were evaluated with liquid chromatograph tandem mass spectrometry (LC?MS/MS) as total quercetin derivatives after enzymatic deconjugation in plasma, urine, and fecal samples on week 2, 4, 6 and 8. Quercetin glucuronides excreted in feces were also measured. Results Fiber feeding elevated cecal weight and reduced cecal pH, indicative of cecal fermentation promotion. Changes in plasma and urinary quercetin levels revealed three phases of quercetin metabolism, including cumulative, transient, and stable phases. On week 2, total quercetin derivatives were higher in plasma samples from three fiber-fed groups than those control groups; however, urinary excretion increased in fiber-fed groups on week 4. Soybean fiber upregulated plasma and urinary quercetin levels on week 6 and 8. Intestinal degradation of quercetin by bacteria, calculated from differences between aglycone ingestion and sum of urinary and fecal excretion, was suppressed after dietary fiber supplementation especially in pectin fiber, which may partly contribute to the increase in quercetin bioavailability. Fecal quercetin glucuronide excretion was high in soybean fiber-fed rats, suggestive of the reduction of β-glucuronidase in colon. Conclusion Water-soluble dietary fibers, especially soybean fiber, enhanced quercetin bioavailability after chronic feeding and may promote beneficial effects of quercetin on disease prevention. |
| Rights: | The final publication is available at link.springer.com |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/85218 |
| Appears in Collections: | 農学院・農学研究院 (Graduate School of Agriculture / Faculty of Agriculture) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 比良 徹
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