Abstract
SummaryA correlation of the organoleptic and physical properties of hydrogenated soybean oil, blends of this oil with hydrogenated cottonseed oil, and their corresponding margarines has been made by comparing samples crystallized under tempered and essentially untempered conditions. Margarine, which is usually processed under the latter condition and which contains a high percentage of hydrogenated soybean oil, will at times show a strong tendency to develop grain. This graininess was characterized by the presence of high meltingbeta polymorphs, formed by a slow rate of crystal growth.Thus the difference in the polymorphic behavior of highly hydrogenated cottonseed and soybean oil observed by Bailey still prevails in the partially hydrogenated oils but to a lesser extent. The tendency for hydrogenated soybean oil to formbeta crystals can be reduced or eliminated by conditions which promote faster crystal growth and/or the incorporation ofbeta prime stable triglycerides, which control crystal growth through mixed crystal or solid solution formation.
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