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2023 Fiscal Year Final Research Report

Functional evaluation of plant food components

Research Project

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Project/Area Number 21K11676
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 59040:Nutrition science and health science-related
Research InstitutionOkayama University

Principal Investigator

Nakamura Toshiyuki  岡山大学, 環境生命自然科学学域, 准教授 (90706988)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywordsフラボノイド / ケルセチン / 生体利用性 / ビタミンE / 代謝
Outline of Final Research Achievements

In this study, we investigated the effects of multiple simultaneous ingestions of food components on the metabolic conversion of quercetin, and evaluated the functionality of the metabolic converted products of quercetin. Vitamin E and cellulose were used as food components. As a result, quercetin conjugate metabolism in plasma was increased or decreased by simultaneous administration with vitamin E or cellulose compared to quercetin alone, but there was no significant change in their metabolite patterns. Next, the antioxidant capacity of quercetin conjugate metabolites was evaluated. The results showed that some quercetin-conjugated metabolites induced antioxidant enzyme genes. These results suggested that quercetin is rapidly conjugated and metabolized after ingestion, and that the conjugated metabolites exert antioxidant effects in vivo.

Free Research Field

食品機能学

Academic Significance and Societal Importance of the Research Achievements

機能性食品による有効性発現は、生体内に存在する代謝物が発揮していることが示唆されるが、代謝物の有効性に関する知見は非常に限られている。また、フラボノイド類の生体利用性にはいわゆる食べ合わせが重要なファクターであると考えられるが、複数同時摂取でのフラボノイド類の生体利用性の変化に関する報告も僅かである。本研究では、複数同時摂取時のケルセチンの生体利用性の変化を示しただけでなく、生体内での実質的な有効性を明らかにした。本研究成果は、食品成分の生体内での挙動の理解に繋がるとともに、副作用を伴わない安心安全な食による健康増進への寄与が期待できる。

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Published: 2025-01-30  

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