Fatty acids
| A | Palmitic acid | |
| B |
Stearic acid |
|
| C |
Oleic acid |
|
| D |
Omega-3 fatty acids |
Which among the following is a cardioprotective fatty acid?
| A |
Palmitic acid |
|
| B |
Stearic acid |
|
| C |
Oleic acid |
|
| D |
Omega-3 fatty acids |
D i.e. Omega-3 fatty acids
Cardioprotective fatty acid is omega (w) -3 fatty acids (w-3 PUFA)Q > monounsaturated fatty acids (like olive oil)Q
The following fatty acid does not belong to W6 series
| A | Linoleic acid | |
| B |
Arachidonc acid |
|
| C |
Gamma linolenic acid |
|
| D |
Alpha linolenic acid |
D i.e. Alpha linolenic acid
Alpha linolenic acid belongs to W3 seriesQ. Rest others belong to W6 series.
Carbon atoms are numbered from the carboxyl carbon (carbon no. 1). The carbon atoms adjacent to carboxyl carbon are also called. a, 13, Y respectively. The terminal methyl carbon is K/as W or n- carbon
|
W3 Family ,MIL |
W6 Family |
W7 Family |
W9 |
|
– Alpha linolenic Q |
– Gamma linolenicQ |
Palmitoleic |
– 0 leicQ |
|
– Timnodonic |
– ArchidonicQ |
|
– Elaidic |
|
– Cervonic |
– LinolicQ |
|
|
– The first double bond introduced into a saturated fatty acid (to make it unsaturated) is nearly always in 49 position. The reaction is catalyzed by 49 desaturase in presence of 02, NADH and cytochrome b5.
Since animals have 49 desaturase, they are able to synthesize W9 (oleic) family.
– Linoleic (W6) or a – linolenic (W3) acids required for the synthesis of other members of W6 or W3 family must be supplied in diet.
