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Volume 80, Issue 8
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[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 401-402
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (289K) -
Keiko Azuma, Kaeko Murota, Junji TeraoArticle type: Article
2006 Volume 80 Issue 8 Pages 403-410
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSVegetables contain a variety of flavonoids, such as flavonols, flavones and anthocyanidins. Numerous in vitro studies have revealed diverse biochemical actions of flavonoids, and their antioxidant activity should be, at least partly, responsible for these actions. We are interested in quercetin (3, 3', 4', 5, 7-pentahydroxyflavone), a flavonol-type flavonoid as an anti-atherosclerotic food factor and have examined its bioavailability to evaluate the biological effect. Quercetin and other flavonoids frequently exist as their glycoside forms in vegetables. Glucoside-bound quercetin is absorbed and hydrolyzed in small intestine through glucose-transport system or passive transport after lactase phlorizin hydrolase (LPH)-dependent deglucosidation. Quercetin glycosides other than glucoside forms are likely to be absorbed in large intestine after hydrolysis with enterobacteria. Efficiency of the absorption is considerably affected by the coexisting food components. Lipids and emulsifiers were found to enhance the absorption. In any cases, resulting quercetin aglycone is converted to conjugated glucuronides and/or sulfates during the process of their absorption. Some metabolites circulating in the blood stream can act as free radical scavengers, as well as the inhibitors of lipoxygenase and xanthine oxidase. It is therefore likely that biological effect of quercetin is originated from conjugated metabolites. Metabolic conversion of flavonoids to their conjugates may be a process for regulating their action on cellular oxidative stress.View full abstractDownload PDF (895K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 411-413
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (460K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 414-417
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (911K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 419-420
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (406K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 421-422
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (285K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 422-423
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (341K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 424-425
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (297K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 425-426
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (476K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 426-427
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (480K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 428-
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (221K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 429-
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (169K) -
Article type: Bibliography
2006 Volume 80 Issue 8 Pages 431-434
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (401K) -
[in Japanese], [in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 435-436
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (350K) -
[in Japanese], [in Japanese], [in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 436-
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (206K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...Article type: Article
2006 Volume 80 Issue 8 Pages 436-437
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (368K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...Article type: Article
2006 Volume 80 Issue 8 Pages 437-
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (217K) -
[in Japanese]Article type: Article
2006 Volume 80 Issue 8 Pages 437-438
Published: August 25, 2006
Released on J-STAGE: October 10, 2017
JOURNAL FREE ACCESSDownload PDF (330K)
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