(Ph. Eur. monograph 1908)<\/p>\n
Fatty oil obtained by cold expression from ripe seeds of Linum usitatissimum L. A suitable antioxidant may be added.<\/p>\n
Clear, yellow or brownish-yellow liquid, on exposure to air turning dark and gradually thickening. When cooled, it become a soft mass at about -20 \u00b0C.<\/p>\n
Very slightly soluble in ethanol (96 per cent), miscible with light petroleum.<\/p>\n
About 0.931.<\/p>\n
About 1.480.<\/p>\n
First identification: B, C.<\/p>\n
Second identification: A, B.<\/p>\n
A. Identification of fatty oils by thin-layer chromatography (2.3.2).<\/p>\n
Results:The chromatogram obtained is similar to the corresponding chromatogram shown in Figure 2.3.2.-1.<\/p>\n
B. Iodine value (see Tests).<\/p>\n
C. Composition of fatty acids (see Tests).<\/p>\n
Maximum 4.5.<\/p>\n
160 to 200.<\/p>\n
Maximum 15.0.<\/p>\n
188 to 195; carry out the saponification for 1 h.<\/p>\n
Maximum 1.5 per cent, determined on 5.0 g.<\/p>\n
Gas chromatography (2.4.22, Method C). Use the calibration mixture in Table 2.4.22.-3.<\/p>\n
Composition of the fatty-acid fraction of the oil:<\/p>\n
\u2014 fatty acids with a chain length less than C16: maximum 1.0 per cent,<\/p>\n
\u2014 palmitic acid: 3.0 per cent to 8.0 per cent,<\/p>\n
\u2014 palmitoleic acid: maximum 1.0 per cent,<\/p>\n
\u2014 stearic acid: 2.0 per cent to 8.0 per cent,<\/p>\n
\u2014 oleic acid: 11.0 per cent to 35.0 per cent,<\/p>\n
\u2014 linoleic acid: 11.0 per cent to 24.0 per cent,<\/p>\n
\u2014 linolenic acid: 35.0 per cent to 65.0 per cent,<\/p>\n
\u2014 arachidic acid: maximum 1.0 per cent.<\/p>\n
Maximum 0.5 ppm, determined as described in general method 2.4.27. Heavy metals in herbal drugs and herbal drug preparations.<\/p>\n
Maximum 0.1 per cent, determined on 1.00 g.<\/p>\n
In an airtight container, protected from light.<\/p>\n","protected":false},"excerpt":{"rendered":"
(Ph. Eur. monograph 1908) DEFINITION Fatty oil obtained by cold expression from ripe seeds of Linum usitatissimum L. A suitable antioxidant may be added. CHARACTERS Appearance Clear, yellow or brownish-yellow liquid, on exposure to air turning dark and gradually thickening. When cooled, it become a soft mass at about -20 \u00b0C. Solubility Very slightly soluble…<\/p>\n","protected":false},"author":2,"featured_media":31116,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[174],"tags":[],"class_list":["post-31103","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medicinal-substances"],"acf":[],"_links":{"self":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/31103","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/comments?post=31103"}],"version-history":[{"count":2,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/31103\/revisions"}],"predecessor-version":[{"id":31118,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/posts\/31103\/revisions\/31118"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media\/31116"}],"wp:attachment":[{"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/media?parent=31103"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/categories?post=31103"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nhathuocngocanh.com\/bp\/wp-json\/wp\/v2\/tags?post=31103"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}