Sterculia urens Roxb

Sterculiaceae Sterculia urens Roxb. Der Marderosian and Beutler (2002)... 

PS from terrestrial plants have also been reported as anti-CMV agents. For example, PS from three plant species, Astragalus brachycentrus D. C., Astragalus echidnaeformis Sirjaev and Sterculia urens Roxb., which are devoid of in vitro antiviral activity, were evaluated in mouse models of murine CMV infections [109], Treatment with the compounds needed to be started one day prior to virus inoculation for maximum protective benefit. Treatments starting after virus inoculation were ineffective. The mannose-specific plant PS from the orchid species Cymbidium hybrid Cym., Epipactis helleborine (L) Crantz. and Listera ovata (L.) R.Br. Svenska are potent and selective inhibitors of human CMV in vitro [110], They presumably interact at the level of virion fusion with the target cell. 

The dried exudate of the tree Sterculia urens Roxb., found in India, especially in the Gujerat region and in the central provinces. It is a partially acetylated polysaccharide that contains atout 8% acetyl groups and about 37% uronic acid residues. It is a finely ground white powder with a faint odor of acetic acid. It absorbs water rapidly to form viscous mucilages at low concentrations. Viscosity decreases on addition of acid or alkali. 

STERCULIA GUM, Sterculiae ummi (Ka-raya Gum) is obtained from StercuUa urens Roxb. and related species within the family Sterculiaceae. The gum oozes out of natural cracks or after incisions in the stem of Stercu-Im, species, grown in India. 

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