{"id":51954,"date":"2004-10-01T00:00:00","date_gmt":"2018-12-04T04:49:11","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/absorption-excretion-and-distribution-of-dietary-antioxidant\/"},"modified":"2018-12-04T05:49:11","modified_gmt":"2018-12-04T04:49:11","slug":"absorption-excretion-and-distribution-of-dietary-antioxidant","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/absorption-excretion-and-distribution-of-dietary-antioxidant\/","title":{"rendered":"Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans."},"content":{"rendered":"<p style=\"text-align: justify\"><strong>BACKGROUND: <\/strong><br \/>\nBetalains were recently identified as natural antioxidants. However, little is known about their bioavailability from dietary sources.<\/p>\n<p style=\"text-align: justify\"><strong>OBJECTIVE: <\/strong><br \/>\nThe objective was to evaluate the bioavailability of betalains from dietary sources.<\/p>\n<p style=\"text-align: justify\"><strong>DESIGN: <\/strong><br \/>\nThe plasma kinetics and urinary excretion of betalains were studied in healthy volunteers (n = 8) after a single ingestion of 500 g cactus pear fruit pulp, which provided 28 and 16 mg indicaxanthin and betanin, respectively. The incorporation of betalains in LDL and the resistance of the particles to ex vivo-induced oxidation was also researched.<\/p>\n<p style=\"text-align: justify\"><strong>RESULTS:<\/strong><br \/>\nBetanin and indicaxanthin reached their maximum plasma concentrations 3 h after the fruit meal and declined according to first-order kinetics. The half-life of betanin (0.94 +\/- 0.07 h) was shorter than that of indicaxanthin (2.36 +\/- 0.17 h). Both compounds had disappeared from plasma by 12 h after intake. The urinary excretion of indicaxanthin and betanin over 12 h represented 76 +\/- 3.0% and 3.7 +\/- 0.2%, respectively, of the ingested compounds. LDL isolated 3 and 5 h after the fruit meal incorporated betalains at concentrations of 100.5 +\/- 11 and 50 +\/- 7.2 pmol\/mg LDL protein, respectively. In addition, the particles appeared more resistant to ex vivo-induced oxidative injury than did the samples isolated before fruit ingestion (P &lt; 0.05)-the higher the amount of betalains incorporated, the higher the resistance. The concentrations of vitamin E and beta-carotene in LDL did not change significantly after fruit ingestion.<\/p>\n<p style=\"text-align: justify\"><strong>CONCLUSION:<\/strong><br \/>\nOur results show that cactus pear fruit is a source of bioavailable betalains and suggest that indicaxanthin and betanin may be involved in the observed protection of LDL against ex vivo-induced oxidative modifications.<\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-51954","resume","type-resume","status-publish","hentry"],"acf":{"auteurs":null,"adresse":null,"numero":null,"page":null,"mois":null,"annee":null,"mots-cles":null,"sources":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.6 (Yoast SEO v23.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans. - Aprifel<\/title>\n<meta name=\"description\" content=\"Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains 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=\"Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans.\" \/>\n<meta property=\"og:description\" content=\"Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/absorption-excretion-and-distribution-of-dietary-antioxidant\/\" \/>\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\/absorption-excretion-and-distribution-of-dietary-antioxidant\/\",\"url\":\"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/absorption-excretion-and-distribution-of-dietary-antioxidant\/\",\"name\":\"Absorption, excretion, and distribution of dietary antioxidant betalains in LDLs: potential health effects of betalains in humans. - 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