Back to results
US 12,286,454 B2Granted
Irradiation process of pro vitamin D
AssigneeFermenta Biotech Limited
InventorsAnupama Datla, Prashant Nagre, Jagdish Tamore, Sreenath Trivikram, Sachin Wadhavane
Life of this patent
Estimating the term…
Abstract
The invention discloses an improved process for production of vitamin D3 from 7-dehydrocholesterol (7-DHC) and to a simple process for recovery unreacted 7-DHC for further reuse. The invention further describes a process for isolation and purification of Vitamin D3.
Claims18
A photochemical process for preparation of vitamin D3, which process comprises;
- a) heating a mixture of 7-dehydrocholesterol (7-DHC) and a sterol derivative with catalytic amounts of an anti-oxidant in presence of an alkali in an organic solvent at a temperature range of 20-85° C. to obtain a reaction mass;
- b) irradiating the reaction mass using a low pressure Mercury lamp at 10-85° C.;
- and
- c) isolating and purifying vitamin D3 from the irradiated reaction mass,
- wherein the sterol derivative is selected from the group consisting of cholesterol, phytosterol, and lanosterol.
2 more elements
Dependencies are inferred from the claim text.