Absorption of whole peanuts, peanut oil, and peanut butter
1980
Levine, Allen S. | Silvis, Stephen E.
The physical form of peanuts altered fat absorption in 10 healthy participants in a study examining the effect of mechanical breakdown of food on fat absorption. Subjects were fed a vegetarian diet containing 80 g of fat of which 76 g was from whole peanuts, peanut butter or peanut oil. Each subject was also fed a corresponding diet containing only 5 g of crude fiber to examine the effect of fiber content on fat absorption. Results indicated that fat absorption was directly related to the physical refinement of peanut fat; ground peanuts in the form of peanut butter caused much less fat malabsorption than whole peanuts. One subject eating whole peanuts excreted 32% of dietary fat intake. Although fiber did not affect fat absorption in whole peanut diets, high-fiber increased fat excretion in the other 2 peanut diets. Since portions of the nuts remained intact during digestion of whole peanuts, nutrients other than fat may similarly be malabsorbed.
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