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  • Title: Bottle choice tests for oxidized oil in rats.
    Author: Kimura F, Iida A, Endo Y, Fujimoto K.
    Journal: Physiol Behav; 2004 Oct 15; 82(5):877-81. PubMed ID: 15451653.
    Abstract:
    Bottle choice tests in rats are useful for the study of fat appetite. However, little is known about the feeding behavior of rats toward oxidized oil. In this study, 24-h two-bottle choice tests were performed in male Sprague-Dawley (SD) rats for 5 days. When rats were given a choice between thermally oxidized oil and fresh oil, they ingested more fresh oil. A choice test between vapor-added fresh oil and fresh oil showed that rancid flavor is involved in the avoidance of oxidized oil. Results with deodorized oxidized oil indicated that a nonvolatile product also influenced choice. In conclusion, rats could distinguish oxidized oil from fresh oil and preferred fresh oil.
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