Soapbark


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Soapbark

 

the bark of the soapbark tree (Quilliaja saponaria) of the family Rosaceae. The tree is native to South America. Soapbark contains up to 9 percent saponins. It is used as a lathering agent in preparing emulsions. Soapbark is used instead of soap to wash silk and woolen fabrics.

References in periodicals archive ?
The typical plant communities of matorral consist of evergreen sclerophyllous shrubs between 3 ft and 10 ft (1 and 3 m) in height, such as the litre (Lithrea caustica) and soapbark tree (Quillaja saponaria) which are the dominant species.