OIL EXTRACTING—Can you give me a formula for extracting the oil from peppermint and winter- green leaves?
No, I cannot give this formula. It cannot be done except on a large scale as expensive apparatus is required. The essence is extracted from the plant by distillation and is afterwards refined or purified in some way, but I do not know how.
Harding, A.R.. 3001 Questions and Answers. Columbus, Oh: A.R. Harding, 1913.
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