Biochemistry
Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Stearidonic acid (C18H28O2) is an unsaturated fatty acid obtained from oils isolated from hemp and blackcurrant (see also
Problem 10.11).
a. What fatty acid is formed when stearidonic acid is hydrogenated with excess
Hạ and a Pd catalyst?
b. What fatty acids are formed when stearidonic acid is hydrogenated with one
equivalent of Hz and a Pd catalyst?
c. Draw the structure of a possible product formed when stearidonic acid is
hydrogenated with one equivalent of H2 and a Pd catalyst, and one double
OH
stearidonic acid
bond is isomerized to a trans isomer.
d. How do the melting points of the following fatty acids compare: stearidonic
acid; one of the products formed in part (b); the product drawn in part (c)?
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Transcribed Image Text:Stearidonic acid (C18H28O2) is an unsaturated fatty acid obtained from oils isolated from hemp and blackcurrant (see also Problem 10.11). a. What fatty acid is formed when stearidonic acid is hydrogenated with excess Hạ and a Pd catalyst? b. What fatty acids are formed when stearidonic acid is hydrogenated with one equivalent of Hz and a Pd catalyst? c. Draw the structure of a possible product formed when stearidonic acid is hydrogenated with one equivalent of H2 and a Pd catalyst, and one double OH stearidonic acid bond is isomerized to a trans isomer. d. How do the melting points of the following fatty acids compare: stearidonic acid; one of the products formed in part (b); the product drawn in part (c)?
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