Production and use of compositions comprising high concentrations of vitamin B12 activity
US5955321A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 12, 1997 |
| Grant date | Sep 21, 1999 |
| Priority date | — |
| Expiry date | Aug 12, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/822
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides a process for the preparation of a composition comprising natural vitamin B12, wherein said process comprises the steps of: PA1 a) obtaining microbial cells containing natural vitamin B12, PA1 b) causing opening of the microbial cells such that at least part of the soluble content of the cells comprising vitamin B12 is released in a liquid in which the cells are contained, PA1 c) separating the opened cells and the liquid comprising the vitamin B12, PA1 d) preparing a mixture of the vitamin B12 and at least a part of the opened cells, wherein the mixture has a vitamin B12 concentration on dry matter in excess of 0.1% (w/w).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.