{"id":618790,"date":"2024-11-05T23:31:30","date_gmt":"2024-11-05T23:31:30","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/iso-55581982\/"},"modified":"2024-11-05T23:31:30","modified_gmt":"2024-11-05T23:31:30","slug":"iso-55581982","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/iso\/iso-55581982\/","title":{"rendered":"ISO 5558:1982"},"content":{"rendered":"<p>La pr\u00e9sente Norme internationale sp\u00e9cifie une m\u00e9thode de recherche et d&#039;identification, par chromatographie en couche mince, des antioxyg\u00e8nes suivants dans les corps gras d&#039;origines animale et v\u00e9g\u00e9tale : <\/p>\n<ul>\n<li>acide nordihydroguair\u00e9tique (NDGA) <\/li>\n<li>gallate de propyle (GP) <\/li>\n<li>gallate d&#039;octyle (GO) <\/li>\n<li>gallate de dod\u00e9cyle (GD) <\/li>\n<li>tertiobutylhydroquinone (TBHQ) <\/li>\n<li>butylhydroxyanisol (tert-butyl-m\u00e9thoxy-4 ph\u00e9nol) (BHA) <\/li>\n<li>a-tocoph\u00e9rol <\/li>\n<li>butylhydroxytolu\u00e8ne (di-rert-butyl-2,6 m\u00e9thyl-4 ph\u00e9nol) (BHT) Ces antioxyg\u00e8nes sont cit\u00e9s dans l&#039;ordre de leur valeur R<sub>f<\/sub>.<\/li>\n<\/ul>\n<p>La recherche de l&#039;a-tocoph\u00e9rol est parfois difficile, cet antioxyg\u00e8ne<br \/>\ndonnant une tache d&#039;aspect g\u00e9n\u00e9ralement diffus. La limite de d\u00e9tection<br \/>\nde la m\u00e9thode se situe vers 20 mg\/kg (ppm) pour le BHT et 10 mg\/kg (ppm)<br \/>\npour les autres antioxyg\u00e8nes. Il est \u00e0 noter que le BHT n&#039;est pas<br \/>\ncompl\u00e8tement isol\u00e9 par cette m\u00e9thode.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Corps gras d&#8217;origines animale et v\u00e9g\u00e9tale \u2014 Recherche et identification des antioxyg\u00e8nes \u2014 M\u00e9thode par chromatographie en couche mince<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/iso\/\"><b>ISO<\/b><\/a><\/td>\n<td>1982-10<\/td>\n<td>8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":618800,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[984,2634],"product_tag":[],"class_list":{"0":"post-618790","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-67-200-10","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/618790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/618800"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=618790"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=618790"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=618790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}