K. Suzuki et A. Nishioka, BEHAVIOR OF CHLOROPHYLL DERIVATIVES IN CANOLA OIL PROCESSING, Journal of the American Oil Chemists' Society, 70(9), 1993, pp. 837-841
Chlorophyll derivatives in canola oil were analyzed quantitatively by
reversed-phase high-performance liquid chromatography without any pret
reatment. The main components were pheophytin (pheo) a and b and pyrop
heophytin (pyro) a and b. The factors affecting the types and concentr
ation of chlorophyll derivatives in oil have been investigated during
seed preparation, expelling, extraction, degumming and alkali-refining
processes. Bleaching tests of alkali-refined canola oil with activate
d earth indicated the adsorption of each derivative to decrease in the
following order: pheo a > pyro a >> pheo b > pyro b. In bleaching wit
h activated carbon, however, the following order was observed: pyro b
> pheo b > pheo a > pyro a.