Keywords
fortification
palm oil
vegetable oil
dende oil
oil bioavailability
rats
How to Cite
Abstract
Palm oil known in BraziI as "dende oil" oil extracted from the fruit of the palm Elaeis guineensis Jacq that is a rich source of provitamin A, especially B-carotene. In the present study we compared the biopotency of this palm oil as a source of provitamin A in relation to synthetic B-carotene and evaluated the effect of thermal processing on the bioavaiIability of vitamin A in rats. Three groups of 6 animaIs each, previously deficient in vitamin A, were used. The animals received for 20 days diets with soybean oil enriched with synthetic B-carotene, paIm oil not submitted to heating or palm oil submitted to heating at 1000C for 20 minoTheoretically, ali diets contained 4 ER/g diet. Hepatic vitamin A con-
centration was similar in the control group and in the group receiving dende oil without previous heating (185.72 ± 25.40 and 150.17 ± 33.08 ug/g tissue, respectively). The group which received heat-processed dende oil showed a lower hepatic vitamin A value than the control group (144.80 ± 16.84 and 185.72 ± 25.40 ug/g tissue, respectively). The results demonstrate the feasibilty of palm oil as a provitamin A source even after thermal processing since the animaIs in the group receiving previously heated dende oil stored significant amounts of hepatic vitamin A.
Key words: B-carotene, fortification, palm oil, vegetable oil, "dende oil'' oil bioavailability, rats.
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