Characterizing some photophysical, photochemical and photobiological propierties of photosensitizing anthraquinones
Rhein and other anthraquinones
are also present in many health foods such as aloe and senna leaf.
occidentalis including sennoside, anthraquinone
glycoside,  fatty oils, flavonoid glycosides, galactomannan, polysaccharides, and tannins .
glycosides: aloin, aloe-emodin, barbaloin (15% -30%) .
Spectroscopic characterization of effective components anthraquinones
in Chinese medicinal herbs binding with serum albumins.
Secondary metabolites Extracts (whole plant) Hexane Ethylacetate Methanol Alkaloids - - - Saponins - ++ ++ Tannins - - - Reducing sugars ++ ++ ++ Steroids ++ ++ ++ Glycosides ++ ++ ++ Flavonoids ++ ++ ++ Anthraquinones
++ ++ ++ Key - Absent ++ present Table 2: Antibacterial activities of the hexane, ethylacetate and methanol extracts of Brysocarpus coccineus stem.
Evaluation of the antiviral activity of anthraquinones
, anthrones and anthraquinone
against human cytomegalovirus.
Knipholone, a binary compound composed of the anthraquinone
chrysophanol and an acetylphloroglucinol (Fig.
Constituents from the bark extracts have been found to be mainly benzopyranones and anthraquinones
, while stilbene derivatives have been reported from the leaves (Teeyapant et al.
The presence of alkaloids, saponins, phytosterols, polyphenols and carotenoids in the different parts of the plants was observed whilst anthraquinones
were not detected.
To evaluate the carcinogenic potential of anthraquinones
, the effect of long-term senna pod extract (SE) treatment on either healthy rats or rats treated with an initiating tumor agent (azoxymethane--AOM) has been studied.
The natural food colors, by type, has been segmented into caramel, carotenoids, anthocyanins, and others which include betalains, anthraquinones
, carmine, cochineal extract, curcumin, turmeric, and copper chlorophyllin.