Different preferences for oils with similar fatty acid profiles.
While preference for fat can be influenced by concentration and physical form, the influence of fatty acid composition on relative preference for oils has not been systematically investigated. Therefore, the purpose of the present investigation was to assess the relative preference for oils rich in oleic (Extra Light Olive Oil and Extra Virgin Olive Oil) and linoleic (Safflower Oil) acid. Male Fischer rats (n = 10) were used to determine preference in a two-choice testing procedure in which three pairs of oils were each tested twice. Preference testing occurred at dark onset at which time the rodent diet and water were removed and each rat was allowed 2-h access to his assigned pair of oils. There was a main effect of oil type (p<0.01), but no significant effect of oil pairing and no interaction between oil pairing and oil type. Rats preferred the Extra Light Olive Oil to the Extra Virgin Olive Oil (p<0.05). This is the first report of preference testing in which two oils with similar fatty acid profiles were included. The present data indicate that the fats with similar fatty acid profiles were not equally preferred, suggesting that a property other than the fatty acid composition of the oils accounts for the demonstrated preference.
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The Pennsylvania State University, College of Health and Human Development, Nutrition Department/Graduate Program in Nutrition, 126 Henderson Building South, University Park, PA 16802, USA.
Greenberg
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Corwin
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D000704:Analysis of Variance; D000818:Animals; D004042:Dietary Fats, Unsaturated / Q000145:classification / Q000378:metabolism*; D004435:Eating / Q000502:physiology*; D002149:Energy Intake / Q000502:physiology; D005227:Fatty Acids / Q000378:metabolism*; D005518:Food Preferences / Q000502:physiology*; D008297:Male; D000069463:Olive Oil; D010938:Plant Oils / Q000378:metabolism; D051381:Rats; D011916:Rats, Inbred F344; D012450:Safflower Oil / Q000378:metabolism
D004042:Dietary Fats, Unsaturated; D005227:Fatty Acids; D000069463:Olive Oil; D010938:Plant Oils; D012450:Safflower Oil