Stable, homogeneous, extract free or nearly free form secondary reaction products
US6340479B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Jan 22, 2002 |
| Priority date | — |
| Expiry date | Nov 28, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K36/8962
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A stable, homogeneous extract of plants or plant parts prepared by a process comprising: (a) mixing plants or plant parts charged in a fresh and/or dried state with at least one solvent and at least one agent and extracting the plants or plant parts with the solvent and agent, and thereafter filtering insoluble compounds to obtain a filtrate; or (b) mixing and extracting plants or parts thereof charged in a fresh and/or dried state with at least one solvent, thereafter filtering insoluble compounds therefrom, and thereafter mixing with at least one agent to obtain a filtrate; wherein the filtrate is substantially free of secondary reaction products and contains a native compound mixture. The agent: (i) increases the solubility of at least one extracted compound contained in the filtrate; (ii) increases the viscosity of the filtrate in the presence of the solvent(s); (iii) decreases the steam pressure of volatile extracted compounds contained in the filtrate; (iv) prevents or reduces the chemical and/or enzymatic reactions between one or more extracted compounds contained in the filtrate; (v) prevents or reduces the sedimentation and/or flotation of extracted compounds contained in …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.