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Kinetics of Bleaching of Vegetable Oils
Author(s) -
Brimberg U. I.
Publication year - 1982
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/bf02678716
Subject(s) - rapeseed , flocculation , kinetics , chemistry , palm oil , colloid , reaction rate constant , pigment , carotene , pulp and paper industry , chemical engineering , food science , organic chemistry , physics , engineering , quantum mechanics
Abstract It was shown in a recent paper that the concentration c of remaining chlorophyll or carotene in rapeseed oil during the bleaching process follows a rate formula, log c/c o =– k √t, characteristic of flocculation of colloids. Thus, the pigments are particulate and colloidally dispersed in the oil. The rate constant k was proportional to the added amount of clay. This paper reports experiments with palm oil. The same kinetics as those with rapeseed are valid. The effects of various parameters on the rate have been studied. The mechanism of the process is discussed.