Allium Cepae Extract
\nTotal polyphenol and main flavonoid antioxidants in different onion (Allium cepa L.) varieties.
\nIn onion, spiraeoside (quercetin-4′-O-\u03b2-D-glucoside), rutin and quercetin and 3 other not identified compounds were found as the major constituents. Significant cultivar differences were found. The most abundant compound was spiraeoside (32 234 mg\/kg DM in red onion, 23 283 mg\/kg DM in yellow onion and 265 mg\/kg DM in white onion).
\nDuring storage, an increase in flavonoids could be observed, especially at a laboratory temperature compared to storage at a lower temperature.
\nSpiraeoside,
\nSynonym(s): Quercetin 4′-glucoside. Spiraein. Spiraeoside. Spireoside
\nChapman Hall Number: KWD91-S
\nCAS Registry Number: 20229-56-5
\nType of Compound Code(s): VK5250
\nMolecular Formula: C21H20O12
\nMolecular Weight: 464.382
\nAccurate Mass: 464.09548
\nPercentage Composition: C 54.32%; H 4.34%; O 41.34%
\nBiological Source: Isol. from Spiraea ulmaria and other plant spp.
\nPhysical Description: Yellow needles (MeOH aq.)
\nMelting Point: Mp 240-241 (209-210).
\nWe use the red onion for extraction, which contains the highest spiraeoside.<\/p>\n","protected":false},"excerpt":{"rendered":"
Allium Cepae Extract Total polyphenol and main flavonoid antioxidants in different onion (Allium cepa L.) varieties. In onion, spiraeoside (quercetin-4′-O-\u03b2-D-glucoside), rutin and quercetin and 3 other not identified compounds were found as the major constituents. Significant cultivar differences were found. The most abundant compound was spiraeoside (32 234 mg\/kg DM in red onion, 23 283 […]<\/p>\n","protected":false},"author":128,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-107537","post","type-post","status-publish","format-standard","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/107537","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/users\/128"}],"replies":[{"embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/comments?post=107537"}],"version-history":[{"count":0,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/posts\/107537\/revisions"}],"wp:attachment":[{"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/media?parent=107537"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/categories?post=107537"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereja.media\/index\/wp-json\/wp\/v2\/tags?post=107537"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}