Ellagic acid glycosides

This collection has yielded several known flavans and ellagic acid derivatives, together with three novel ellagic acid derivatives, two of which are active. One of the active compounds against the Sc-7 yeast strain is the new ellagic acid derivative 31, and a second active compound is a rhamnosyl glycoside of a bisdeoxyellagic acid.26... 

Pour juice onto the polyamide-6 mini column, wash with water, elute flavonol glycosides with methanol, elute flavonol glucuronide, acylated flavonols, and elute ellagic acid with 0.5% NH, in MeOH. Evaporate MeOH to dry sample, redissolve in 4% H3P04, filter (0.45 /nm). 

In the same manner, not all ellagitannins are hydrolyzable as those with a C-glycosidic bond will not break down with tannin-active enzymes or hot dilute acids to produce free ellagic acid. 

High Phytochemical Content carotenoids (beta-carotene) polyphenols (anthocyanins, particularly pelargonidin, and ellagic acid and ellagitannins in the strawberry achenes, delphinidin and cyanidin glycosides and rutinosides, quercetin, hydroxycinnamic acids, proanthocyanidins)... 

High Phytochemical Content carotenoids (alpha- and beta-carotene, beta-cryptoxanthin, lutein, violaxanthin) polyphenols (hesperidin, anthocyanins, quercetin, gallic acid, gallotannins, rhamnetin, cyani-din and xanthone glycosides, proanthocyanidins, resveratrol, ellagic acid, ellagitannins)... 

Only one preliminary study has been published so far on the single species known in the subfamily Pakaraimoideae, namely, Pakaraimaea dipterocarpacea Maguire Ashton. Ellagic acid which is also reported as a bioactive compound in the sub mily Dipterocarpoideae in Table 1, was identified in the wood extract of this species by comparison with an authentic sample [149]. UV analysis was used to detect the anthocyanidin leuco-7-O-methyl pelargonidin [149]. 3-G-Glycosides of flavonols such as... 

Phytochemistry Underground organs contain tannins (ellagic acid, phloroglucinol, and caffeic acid), flavonoids (nepodin, chrysophanic acid, emodin, etc.), resins, essential oils, and calcium oxalate. Leaves contain flavone glycosides (hypero-side and rutin), carotene, vitamin C, and calcium oxalate (Seredin and Sokolov 1969 Mukhamed yarova and Chumbalov 1979). 

Bioactive compounds such as carotenoids and vitamin C are known to be present in mango fruit (Ribeiro et al. 2007) and some phenolic compoimds identified in the edible part of mango have been previously characterized. They include flavonoids such as quercetin and kaempfer-ol glycosides and important phenolic acids, such as ellagic acid, gallic acid, mangiferin, and hydrolyzable tannins (Barreto etal. 2008 Noratto etal. 2010). 

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