Process for isolating and purifying viruses and sugars from plant sources
US6303779A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Oct 16, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/904
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The present invention features a method for isolating and purifying vitamins and sugars from a plant host which is applicable on a large scale. Moreover, the present invention provides a more efficient method for isolating vitamins and sugars than those methods described in the prior art. In general, the present method of isolating vitamins and sugars comprises the steps of homogenizing a plant to produce a green juice, adjusting the pH of and heating the green juice, separating the target species, either vitamins or sugars, from other components of the green juice by one or more cycles of centrifugation, resuspension, and ultrafiltration, and finally purifying vitamins or sugars by such procedure as PEG-precipitation, chromatography and/or salt precipitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.