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PAPERBACK price:$34.75 add to cart Rights & Permissions Free PDF Access Sign in to download PDF book and chapters Free Resources Display this book on your site! Related Titles Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids Dietary Reference Intakes Research Synthesis: Workshop Summary Other Related Titles Dietary Reference Intakes: Proposed Definition and Plan for Review of Dietary Antioxidants and Related Compounds (1998) Food and Nutrition Board (FNB) Citation Manager Export the bibliographic data for this book in your chosen format Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Citation Manager . "Food Components That Will Not Be Reviewed By the Panel." Dietary Reference Intakes: Proposed Definition and Plan for Review of Dietary Antioxidants and Related Compounds. Washington, DC: The National Academies Press, 1998. Please select a format: Page 8   E-mail Share on facebook Facebook Share on delicious Delicious Share on stumbleupon Stumble Share on twitter Twitter More Sharing ServicesMore The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. Selenium Selenium is a required constituent of several enzymes that remove ROS in vivo. Moreover, selenium is present in human diets, and its consumption has been quantitated in a number of different populations. Biomarkers for selenium and data for selenium intake exist and have been reported in studies of populations that vary with respect to selenium status. Some intervention studies have been performed that demonstrate effects of selenium supplementation on biomarkers and on the development of disease. Thus, the panel will review the available scientific data and, if it is adequate, will establish DRIs for selenium. Food Components that will not be Reviewed by the Panel Phenols and Polyphenols Phenols and polyphenols are widely distributed in plant foods. They have been shown to have antioxidant activity in vitro and may possibly elicit biological effects consistent with sustained and improved human health in several observational studies. Nonetheless, comprehensive food composition data, which are required to assess dietary intakes in a population, are unavailable. In addition, only extremely limited data are available on the absorption and metabolism of these food components. Although phenols and polyphenols may be important dietary constituents, insufficient data are available at this time to warrant their inclusion in this evaluation. Other Proposed Dietary Antioxidants The overall DRI framework includes a planned review, by another expert panel, of food components grouped as "other food components." That review, when it is initiated, may include other related compounds not addressed by this panel, such as flavonoids, phenols and polyphenols, phytoestrogens, lipoic acid, and food additives. Because the published literature on some of these potentially important dietary substances is scant at this time, other data may emerge in the future that could allow a consideration of setting DRIs for these compounds as well. Summary The panel's proposed definition of a dietary antioxidant follows: A dietary antioxidant is a substance in foods that significantly decreases the adverse effects of reactive oxygen species, reactive nitrogen species, or both on normal physiological function in humans . Page 8 Front Matter (R1-R10) Introduction (1-1) Toward a Definition of Dietary Antioxidant (2-2) Proposed Definition (3-5) Food Components That Will Be Reviewed By the Panel (6-7) Food Components That Will Not Be Reviewed By the Panel (8-8) Selected References (9-12) Appendix: Acknowledgments (13-13)

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--> Selenium Selenium is a required constituent of several enzymes that remove ROS in vivo. Moreover, selenium is present in human diets, and its consumption has been quantitated in a number of different populations. Biomarkers for selenium and data for selenium intake exist and have been reported in studies of populations that vary with respect to selenium status. Some intervention studies have been performed that demonstrate effects of selenium supplementation on biomarkers and on the development of disease. Thus, the panel will review the available scientific data and, if it is adequate, will establish DRIs for selenium. Food Components that will not be Reviewed by the Panel Phenols and Polyphenols Phenols and polyphenols are widely distributed in plant foods. They have been shown to have antioxidant activity in vitro and may possibly elicit biological effects consistent with sustained and improved human health in several observational studies. Nonetheless, comprehensive food composition data, which are required to assess dietary intakes in a population, are unavailable. In addition, only extremely limited data are available on the absorption and metabolism of these food components. Although phenols and polyphenols may be important dietary constituents, insufficient data are available at this time to warrant their inclusion in this evaluation. Other Proposed Dietary Antioxidants The overall DRI framework includes a planned review, by another expert panel, of food components grouped as "other food components." That review, when it is initiated, may include other related compounds not addressed by this panel, such as flavonoids, phenols and polyphenols, phytoestrogens, lipoic acid, and food additives. Because the published literature on some of these potentially important dietary substances is scant at this time, other data may emerge in the future that could allow a consideration of setting DRIs for these compounds as well. Summary The panel's proposed definition of a dietary antioxidant follows: A dietary antioxidant is a substance in foods that significantly decreases the adverse effects of reactive oxygen species, reactive nitrogen species, or both on normal physiological function in humans .

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