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Radiation‐induced changes on beef fat‐cephalin mixtures by gamma ‐radiation. Inhibition of cis‐trans isomerization
Author(s) -
Kohn Rudolf
Publication year - 1968
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02890706
Subject(s) - ionizing radiation , chemistry , irradiation , isomerization , food science , radiation , radiation dose , absorption (acoustics) , photochemistry , radiochemistry , organic chemistry , nuclear medicine , materials science , medicine , physics , quantum mechanics , nuclear physics , composite material , catalysis
Ionizing radiation‐induced cis‐trans isomerization of unsaturated bonds in beef fat was inhibited by the addition of phospholipid. Infrared absorption at 10.35 µ (966 cm −1 ) of γ ‐irradiated beef fat‐ dl ‐ a ‐cephalin dipalmitate mixtures was less than that of beef fat alone. These decreases were dose‐dependent, but oxygen‐independent. Reactions in the dose range 6 to 25 Mrad (see footnote 2) appear to differ from those in the dose range 25 to 100 Mrad. Some suggested explanations are offered for these phenomena.