Answer to Question #109714 in Biochemistry for kylie

Question #109714
Compare and contrast trans- and cis- fatty acids.
Expert's answer

Natural unsaturated fatty acids are in configuration that is called cis, but partial hydrogenation can flip the chemical bonds into a different configuration that is called trans. In cis configuration the chains of carbon atoms are on the same side of the double bond, resulting in a kink. In trans configuration hydrogen atoms are on the opposite side of the double bonds of the carbon chain, making the fat molecule straight.

Melting point : cis-fats usually low, some cis fats are liquid at room temperature.

trans-fats - usually high, trans fats are solid at room temperature.

Cis-fats occur naturally, the majority of trans-fats come from processed foods

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