Drug – bio-affecting and body treating compositions – Antigen – epitope – or other immunospecific immunoeffector – Conjugate or complex
Patent
1994-12-20
1995-11-14
Rollins, John W.
Drug, bio-affecting and body treating compositions
Antigen, epitope, or other immunospecific immunoeffector
Conjugate or complex
A61K 3578
Patent
active
054664543
ABSTRACT:
The present invention provides an improved extraction process of the type in which herbs are boiled in a solvent to produce an herbal liquid that is concentrated to form an herbal extract. In a first phase of the improved process, herbs are boiled in a solvent in an extraction vessel to form an herbal liquid and an herbal vapor; the herbal vapor is drawn into a collection tank, where it is allowed to condense into an herbal condensate that is periodically re-introduced into the herbal liquid in the extraction vessel. In a second phase, a portion of the herbal liquid is drawn into a concentration vessel, where it is concentrated into herbal extract while the herbal liquid continues to boil in the extraction vessel; this second phase is repeated until there is no more herbal liquid in the extraction vessel. In a third and final phase, the last of the herbal liquid drawn into the concentration vessel from the extraction vessel is concentrated into herbal extract.
REFERENCES:
patent: 4230689 (1980-10-01), Choy
patent: 4800080 (1989-01-01), Grollier et al.
patent: 5071653 (1991-12-01), Kakuda et al.
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