Abstract
Customers are increasingly paying attention to fats and oils because they are strongly health related. Many points are still confusing about this, but certainly there is one that will soon become public concern: the presence of trans fatty acids in hydrogenated fats and their products. Natural fats and oils from vegetable origin lack this trans isomers. Even though the production of the trans isomers during hydrogenation is unavoidable it can be controlled and minimized. The presence of these components modify technical characteristics as well as introduce problems and alterations in health and nutritional aspects. High trans fatty acids values (up 62%) were found in Brazilian products. A relevant effect in solid content (SFC) at low temperatures was observed but no influence in the softening point. Possible nutritional and health effects related to trans fatty acids will be discussed.
Highlights
Los ácidos grasos tienen varias funciones fisiológicas, actúan como fuentes de energía, como componentes de biomembranas y como precursores de las prostaglandinas (Horrobin, 1992)
Los ácidos grasos trans ingeridos y absorbidos son transportados a las células donde pueden ser utilizados como fuentes de energía o depositados en los tejidos para utilización futura
Zevenbergen, J.L., Houtsmuller, U.M.T. y Gottenbos, J.J. (1988).- «Linoleic acid requeriment of rats fed trans fatty acids».- Lipids 23,178-186
Summary
Technical and nutritional implications of trans fatty acids in hydrogenated oils. Many points are still confusing about this, but certainly there is one that will soon become public concern: the presence of trans fatty acids in hydrogenated fats and their products. Natural fats and oils from vegetable origin lack this trans isomers. Eventhough the production of the trans isomers during hydrogenation is unavoidable it can be controlled and minimized. The presence of these components modify technical characteristics as well as introduce problems and alterations in health and nutritional aspects. Possible nutritional and health effects related to trans fatty acids will be discussed. KEY-WORDS: Fatty acid - Hydrogenated oil - Information (paper) Nutritional evaluation - Trans isomer
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