InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Aspartame, an artificial sweetener, is peptide and has the following structure : .A. Identify the four functional groupsB.C.D. |
|
Answer» Correct Answer - A::B::C::D `H_(2)N-underset(underset(underset("Aspartame(Aspartamine)")(CH_(2)-COOH))(|))(CH)-CONH-overset(overset(CH_(2)-C_(6)H_(5))(|))(CH)-COOCH_(3)` (i) in aspartame four functional groups are present which are (a) `-NH_(2)` (Amine) (b) `(-COOH)` (Carboxylic acid) (c) `-overset(overset(O)(||))(C)-NH(2^(@)"amide")` (d) `-overset(overset(O)(||))(C)-O-("Ester")` (ii) Zwutter ion structure is given as below : `H_(2)overset(+)(N)-underset(underset(CH_(2)-COO^(-))(|))(CH)-CONH-overset(overset(CH_(2)C_(6)H_(5))(|))(CH)-COOCH_(3)` (iii) `H_(2)N-underset(underset(CH_(2)COOH)(|))(CH)-overset(overset(O)(||))(C)-NH-overset(overset(CH_(2)C_(6)H_(5))(|))(CH)-COOCH_(3) overset("Hydrolysis") (rarr)` `H_(2)N-underset(underset(underset((a))(CH_(2)COOH))(|))(CH)-COOH + H_(2)N-underset((b))overset(overset(CH_(2)C_(6)H_(5))(|))(CH)-COOH` Hence on hydrolysis two amino and (a) and (b) are obtained. (iv) In above to amino acids `NH_(2)- underset(underset(CH_(2)-H_(5)C_(6))(|))(CH)-COOH` is more hydrophobic due to presence of non-polar `C_(6)H_(5)-CH_(2)-` or benzyl group. |
|