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Analysis for Stereoisomers of Beta‐Carotene in Fermentation Preparations
Author(s) -
NELSON GEORGE E. N.,
CIEGLER ALEX,
HALL HARLOW H.
Publication year - 1966
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1966.tb00506.x
Subject(s) - carotene , beta carotene , chemistry , fermentation , mycelium , food science , vitamin , fraction (chemistry) , chromatography , biochemistry , carotenoid , biology , botany
SUMMARY The potential vitamin A activity of a carotene‐containing preparation obtained from mated cultures of Blakeslea trispora was investigated by determining the stereoisomers of the β‐carotene fraction. The β‐carotene extracted from some fresh mycelia contained about 94% of the all‐trans isomer, the remainder being about 3.5% of neo‐β‐carotene B and 2.5% of neo+β+ carotene U. β‐Carotene from stored dried preparations showed about 91% of all‐trans, 7.570 of neo‐β‐carotene B, and 1.5% of neo‐β‐carotene U.