Stereochemical configuration and provitamin a activity; some cis-trans isomers of gamma-carotene

Deuel, H.J.; Hendrick, Cornelia; Straub, Evelyn; Sandoval, A.; Pinckard, J.H.; Zechmeister, L.

Archives of Biochemistry 14(1-2): 97-103

1947


ISSN/ISBN: 0096-9621
PMID: 20251337
Accession: 025522414

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Abstract
The following provitamin A potencies of cis-trans isomeric carotenes were found in rats (γ-carotene 100%): all -trans -γ -carotene, 26%; neo-γ-carotene P, 19%; and mixed stereoisomers of γ-carotene (with decreased absorbability), 16%.