A method for the determination of vitamin A, alpha- and beta- carotene in margarine, including the results of a collaborative test
Usher, C.D.; Favell, D.J.; Lavery, H.
Analyst 93(103): 107-110
1968
ISSN/ISBN: 0003-2654 PMID: 5638377 Accession: 014314025
Unsaponifiable matter of margarine is extracted and chromatographed on neutral alumina, The alpha - and beta -carotene in the yellow eluate are separated on magnesium oxide and the colourless eluate of vitamin is passed through a column of alkaline alumina. Concentrations are measured by spectrophotometer.
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