anthraquinone

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anthraquinone

[‚an·thrə·kwi′nōn]
(organic chemistry)
C6H4(CO)2C6H4 Yellow crystalline diketone that is insoluble in water; used in the manufacture of dyes.
References in periodicals archive ?
planchonii leaves revealed the presence of cardenolides, phenolics, cardiac glycosides, saponins, terpenoids, flavonoids, tannins, and alkaloids, while anthraquinones and steroids were not detected (table 1).
Plant compounds including anthraquinones, dihydroxyanthraquinones, saponins, acemannan, and aloe-emodin have been proposed by various studies to have both direct and indirect antimicrobial properties.
The mixture was shaken and formation of a red coloration was taken as an indication of the presence of free anthraquinones.
According to results (Table 1), anthraquinones are abundant in both species analyzed, while anthrones and quinones showed a moderate presence.
Thus, the light action in the presence of oxygen improved the antimicrobial effect of photosensitizing anthraquinones by increasing the Redox imbalance, because of their ability to generate ROS, which resulted ultimately in an oxidative stress inside of C.
Inactivation of enveloped viruses by anthraquinones extracted from plants.
Phytochemical Analysis: Phytochemical screening of selected plant parts was done for the detection of alkaloids, glycosides, tannins, starch grains, Anthraquinones, saponins, fixed and volatile oils and acid hydrolysis by following the method of British Pharmacopoeia (1999).
Phytochemical Analysis: The qualitative phytochemical analysis of the ethanol pericarp and crown extracts was performed (Guevara, 2005) to detect the presence of alkaloids, tannins, 2-deoxysugars, saponins, free fatty acids, unsaturated steroids, triterpenoids, flavonoids, leucoanthocyanins, and anthraquinones.
Both plants had more steroids and flavonoids except for the two phytochemicals, anthraquinones and cyanogenic glycosides which were absent.
Results: Different phyto-constituents like glycosides, flavonoids, tannins, steroids, alkaloids and saponins were found to be present in GTNE and NNE, while anthraquinones were not detected.
Anthraquinones and flavonoids in ethanol extracts (HAAP and HAS) were evaluated by thin layer chromatography (TLC) using silica plates 20 x 15 cm (Merck[TM] silica gel 60), ethyl acetate: methanol: water (10:1.