A method of producing active component fractions from dried and ground root material of a species of the rheum family by extraction with ethanol, removal of lipophilic minor components and methanol, followed by shaking in ethyl acetate and separating the combined ethyl acetate phase into a limited number of fractions by columnar chromatography in the presence of an eluant.

 
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< NATURAL IMMUNOSTIMULANT COMPOSITIONS, METHODS FOR OBTAINING THE SAME AND PHARMACEUTICAL FORMULATIONS THEREOF

> BACTERIAL EXTRACTS CULTURED IN THERMAL WATERS FOR TREATING SENSITIVE SKIN, MUCOUS MEMBRANES AND SCALPS

> GROWTH INHIBITORY COMPOSITION AGAINST PATHOGENIC BACTERIA OF MEAT BASED FOOD STUFF COMPRISING IGY

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