Curcumin is a compound found in tumeric. What functional group is not present in curcumin?

 


a. phenol
b. aldehyde
c. ether
d. ketone

http://en.wikipedia.org/wiki/Curcumin

ketone

Aldehyde

To determine the functional group that is not present in curcumin, we can first identify the functional groups that are commonly found in organic compounds. These include alcohols (characterized by the hydroxyl group -OH), aldehydes (characterized by the carbonyl group C=O at the end of a carbon chain), ketones (characterized by the carbonyl group C=O in the middle of a carbon chain), and ethers (characterized by the oxygen atom linking two carbon atoms).

Curcumin does contain a phenolic group, which is characterized by a hydroxyl group (-OH) bonded directly to an aromatic ring.

To identify the functional group that is not present, we need to analyze the chemical structure of curcumin. Curcumin consists of two aromatic rings connected by two α,β-unsaturated carbonyl groups. By examining the structure, we can see that curcumin does not contain an aldehyde functional group, which is characterized by the carbonyl group (C=O) at the end of a carbon chain.

Therefore, the correct answer is b. aldehyde