Abstract
The high vitamin A activity of the petroleum ether extract of the annatto seed has been confirmed. It ranges from 1,000 to 2,000 international units of vitamin A per gram of extract. It was found that a standard mixture of 3-percent acetone in petroleum ether did not remove any vitamin A-active material from a magnesium oxide-hyflo supercel column, on which a petroleum ether extract of annatto had been chromatographed. The only solvent among those tried, that effectively removed the material which was left absorbed on the column after elution with acetone-petroleum ether was methanol. The methanol extract exhibited a biological activity of about the same order of magnitude as the original petroleum ether extract, that is, 1,000 to 2,000 international units of vitamin A.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Journal of Agriculture of the University of Puerto Rico
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
