Vitamin Eobservational2012
Spectrophotometric determination of microamounts of tocopheryl acetate (vitamin E) in multi-vitamin capsules.
Talanta
confidence
Key findings
Analytical method for determining microamounts of vitamin E in multi-vitamin capsules; no clinical or biological endpoints reported.
View source on PubMed (PMID 18962838) ↗
- Sample size
- Not reported
- Population
- Not applicable (analytical chemistry method)
- Dosing
- Not reported
- Duration
- Not reported
- Route
- Not reported
- Blinding
- not_reported
- Controls
- none
- Drug class
- fat-soluble vitamin
Full abstract
Micro amounts of vitamin E in multi-vitamin tablets are extracted from aqueous EDTA medium with petroleum ether and are determined after transesterification, by use of iron(III) in the presence of Ferrozine. Vitamin E is determined in concentrations of 40-200 mug per 25 ml of final solution with a relative precision of about 1-2% when the standard addition method is used.