{"id":35549,"date":"2012-11-01T00:00:00","date_gmt":"2018-12-03T23:45:51","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/"},"modified":"2018-12-04T00:45:51","modified_gmt":"2018-12-03T23:45:51","slug":"the-challenge-to-reach-nutritional-adequacy-for-vitamin-a","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/","title":{"rendered":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion–evidence in humans."},"content":{"rendered":"

β-Carotene is an important dietary source of vitamin A for humans. However, the bioavailability and vitamin A equivalency of β-carotene are highly variable and can be affected by food- and diet-related factors, including the food matrix, food-processing techniques, size of the dose of β-carotene, and the amounts of dietary fat, fiber, vitamin A, and other carotenoids in the diet as well as by characteristics of the target population, such as vitamin A status, nutrient deficiencies, gut integrity, and genetic polymorphisms associated with β-carotene metabolism. The absorption of β-carotene from plant sources ranges from 5% to 65% in humans. Vitamin A equivalency ratios for β-carotene to vitamin A from plant sources range from 3.8:1 to 28:1, by weight. Vitamin A equivalency ratios for β-carotene from biofortified Golden Rice or biofortified maize are 3.8:1 and 6.5:1, respectively, and are lower than ratios for vegetables that have more complex food matrices (10:1 to 28:1). The vitamin A equivalency of β-carotene is likely to be context-specific and dependent on specific food- and diet-related factors and the health, nutritional, and genetic characteristics of human populations. Although the vitamin A equivalency of β-carotene is highly variable, the provision of vegetable and fruit sources of β-carotene has significantly increased vitamin A status in women and children in community settings in developing countries; these results support the inclusion of dietary interventions with plant sources of β-carotene as a strategy for increasing vitamin A status in populations at risk of deficiency.<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-35549","resume","type-resume","status-publish","hentry"],"acf":{"adresse":"Program in International and Community Nutrition, Nutrition Department, University of California, Davis, Davis, CA 95616, USA. mjhaskell@ucdavis.edu","annee":"2012","mois":"11","numero":"96:5","page":"1193S-1203S","auteurs":[{"ID":35548,"post_author":"0","post_date":"2018-12-04 00:45:51","post_date_gmt":"2018-12-03 23:45:51","post_content":"","post_title":"Haskell","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"haskell","to_ping":"","pinged":"","post_modified":"2018-12-04 00:45:51","post_modified_gmt":"2018-12-03 23:45:51","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/auteur\/haskell\/","menu_order":0,"post_type":"auteur_resume","post_mime_type":"","comment_count":"0","filter":"raw"}],"sources":[{"ID":1720,"post_author":"0","post_date":"2018-12-03 16:01:56","post_date_gmt":"2018-12-03 15:01:56","post_content":"","post_title":"Am J Clin Nutr.","post_excerpt":"","post_status":"publish","comment_status":"closed","ping_status":"closed","post_password":"","post_name":"am-j-clin-nutr","to_ping":"","pinged":"","post_modified":"2018-12-03 16:01:56","post_modified_gmt":"2018-12-03 15:01:56","post_content_filtered":"","post_parent":0,"guid":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/source\/am-j-clin-nutr\/","menu_order":0,"post_type":"source","post_mime_type":"","comment_count":"0","filter":"raw"}]},"yoast_head":"\nThe challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel<\/title>\n<meta name=\"description\" content=\"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel\" \/>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion--evidence in humans.\" \/>\n<meta property=\"og:description\" content=\"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion--evidence in humans.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/\" \/>\n<meta property=\"og:site_name\" content=\"Aprifel\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/\",\"url\":\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/\",\"name\":\"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel\",\"isPartOf\":{\"@id\":\"https:\/\/www.aprifel.com\/fr\/#website\"},\"datePublished\":\"2018-12-03T23:45:51+00:00\",\"dateModified\":\"2018-12-03T23:45:51+00:00\",\"description\":\"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel\",\"breadcrumb\":{\"@id\":\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Accueil\",\"item\":\"https:\/\/www.aprifel.com\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"R\u00e9sum\u00e9s\",\"item\":\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion–evidence in humans.\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.aprifel.com\/fr\/#website\",\"url\":\"https:\/\/www.aprifel.com\/fr\/\",\"name\":\"Aprifel\",\"description\":\"Agence pour la Recherche et l\u2019Information en Fruits et L\u00e9gumes\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.aprifel.com\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel","description":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel","robots":{"index":"noindex","follow":"follow"},"og_locale":"fr_FR","og_type":"article","og_title":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion--evidence in humans.","og_description":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion--evidence in humans.","og_url":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/","og_site_name":"Aprifel","twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/","url":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/","name":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel","isPartOf":{"@id":"https:\/\/www.aprifel.com\/fr\/#website"},"datePublished":"2018-12-03T23:45:51+00:00","dateModified":"2018-12-03T23:45:51+00:00","description":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion-evidence in humans. - Aprifel","breadcrumb":{"@id":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/the-challenge-to-reach-nutritional-adequacy-for-vitamin-a\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Accueil","item":"https:\/\/www.aprifel.com\/fr\/"},{"@type":"ListItem","position":2,"name":"R\u00e9sum\u00e9s","item":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/"},{"@type":"ListItem","position":3,"name":"The challenge to reach nutritional adequacy for vitamin A: beta-carotene bioavailability and conversion–evidence in humans."}]},{"@type":"WebSite","@id":"https:\/\/www.aprifel.com\/fr\/#website","url":"https:\/\/www.aprifel.com\/fr\/","name":"Aprifel","description":"Agence pour la Recherche et l\u2019Information en Fruits et L\u00e9gumes","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.aprifel.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"}]}},"_links":{"self":[{"href":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/wp-json\/wp\/v2\/resume\/35549"}],"collection":[{"href":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/wp-json\/wp\/v2\/resume"}],"about":[{"href":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/wp-json\/wp\/v2\/types\/resume"}],"wp:attachment":[{"href":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/wp-json\/wp\/v2\/media?parent=35549"}],"wp:term":[{"taxonomy":"mots_cles","embeddable":true,"href":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/wp-json\/wp\/v2\/mots_cles?post=35549"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}