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Progress in Essential Oils

By: Brian M. Lawrence
Posted: August 23, 2011, from the September 2011 issue of P&F magazine.

Cyperus rotundus Oil and Extract
The roots, or tubers, of purple nutsedge, a pantropical, troublesome weed (Cyperus rotundus L.), have been used both for culinary and an oild produced from them for perfume uses since ancient times (Negbi, 1992). The oil, which is produced both in India and China, is obtained by steam distillation of the dried tubers.

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