{"id":5299,"date":"2021-07-12T01:23:29","date_gmt":"2021-07-12T05:23:29","guid":{"rendered":"http:\/\/www.phytonutriment.ca\/?p=5299"},"modified":"2023-03-16T22:09:13","modified_gmt":"2023-03-17T02:09:13","slug":"sources-vegetales-de-nitrate","status":"publish","type":"post","link":"https:\/\/www.phytonutriment.ca\/en\/sources-vegetales-de-nitrate\/","title":{"rendered":"Nitrate – Comment trouver des sources v\u00e9g\u00e9tales de nitrate"},"content":{"rendered":"

Des chercheurs de l\u2019Universit\u00e9 de Kingston; Surrrey, Royaume-Uni, ont pr\u00e9sent\u00e9 une nouvelle m\u00e9thode de chromatographie ionique, pr\u00e9cise, fiable, qui permet de mesurer les teneurs en nitrate NO3<\/sub>–<\/sup>\u00a0<\/span>et en nitrite NO2<\/sub>–<\/sup>\u00a0<\/span>dans les produits alimentaires [The primary aim of this study was to develop a new accurate, reliable and robust ion chromatography<\/em>].<\/p>\n

Leur m\u00e9thode de mesure des teneurs en nitrate et des teneurs en nitrite est appliqu\u00e9e \u00e0 trois jus de l\u00e9gumes: les jus de betterave, de radis noir et de c\u00e9leri, et \u00e0 cinq poudres de l\u00e9gumes: les poudres de betterave, d\u2019\u00e9pinard, de c\u00e9leri, de carotte et de tomate.<\/p>\n

En moyenne, les r\u00e9sultats ont \u00e9t\u00e9 les suivants:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n
Echantillons<\/strong><\/td>\nConcentration en nitrate NO3<\/sub>–<\/sup><\/strong><\/p>\n

[en mg kg-1<\/sup>]<\/strong><\/td>\n

Concentration en nitrite NO2<\/sub>–<\/sup><\/strong><\/p>\n

[en mg kg-1<\/sup>]<\/strong><\/td>\n<\/tr>\n

Jus de betterave<\/strong><\/td>\n476<\/strong><\/td>\n38<\/strong><\/td>\n<\/tr>\n
Jus de radis noir<\/strong><\/td>\n799<\/strong><\/td>\nNon d\u00e9termin\u00e9<\/strong><\/td>\n<\/tr>\n
Jus de c\u00e9leri<\/strong><\/td>\n256<\/strong><\/td>\nNon d\u00e9termin\u00e9<\/strong><\/td>\n<\/tr>\n
Poudre de betterave<\/strong><\/td>\n16478<\/strong><\/td>\n79<\/strong><\/td>\n<\/tr>\n
Poudre d\u2019\u00e9pinard<\/strong><\/td>\n28867<\/strong><\/td>\n42<\/strong><\/td>\n<\/tr>\n
Poudre de c\u00e9leri<\/strong><\/td>\n717<\/strong><\/td>\n11<\/strong><\/td>\n<\/tr>\n
Poudre de carotte<\/strong><\/td>\n621<\/strong><\/td>\nNon d\u00e9termin\u00e9<\/strong><\/td>\n<\/tr>\n
Poudre de tomate<\/strong><\/td>\n113<\/strong><\/td>\n27<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Les auteurs ont attir\u00e9 l\u2019attention sur la poudre d\u2019\u00e9pinard. Alors que les r\u00e9sultats des mesures des concentrations en nitrate NO3<\/sub>–<\/sup>\u00a0et nitrite NO2<\/sub>–<\/sup>\u00a0dans le jus de betterave donnent lieu \u00e0 des variations non n\u00e9gligeables quand, sur un m\u00eame lot, les mesures sont r\u00e9p\u00e9t\u00e9es plusieurs fois par jour ou d\u2019un jour \u00e0 l\u2019autre, les r\u00e9sultats des mesures de concentrations en nitrate NO3<\/sub>–<\/sup>\u00a0et en nitrite NO2<\/sub>–<\/sup>\u00a0de la poudre d\u2019\u00e9pinard sont, au contraire, remarquablement stables d\u2019un contr\u00f4le \u00e0 l\u2019autre. (1)<\/p>\n

Source (1)\u00a0: Shah, I., Petroczy, A., James, R.A. and Naughton, D.P. (2013) Determination of nitrate and nitrite content of dietary supplements using ion chromatography.<\/strong>\u00a0<\/span>Journal of Analytical and Bioanalytical Techniques<\/em><\/strong>\u00a0<\/span>S12:003.doi:10.4172\/2155-9872.S12-003<\/strong><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Des chercheurs de l\u2019Universit\u00e9 de Kingston; Surrrey, Royaume-Uni, ont pr\u00e9sent\u00e9 une nouvelle m\u00e9thode de chromatographie ionique, pr\u00e9cise, fiable, qui permet<\/p>","protected":false},"author":50,"featured_media":10753,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[842],"tags":[826],"class_list":["post-5299","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-phytonutrient-products-pc","tag-mineraux"],"_links":{"self":[{"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/posts\/5299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/comments?post=5299"}],"version-history":[{"count":2,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/posts\/5299\/revisions"}],"predecessor-version":[{"id":10414,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/posts\/5299\/revisions\/10414"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/media\/10753"}],"wp:attachment":[{"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/media?parent=5299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/categories?post=5299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.phytonutriment.ca\/en\/wp-json\/wp\/v2\/tags?post=5299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}